GE MULTILIN 269 MOTOR MANAGEMENT RELAY Series Instruction Manual

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Page 1

269

MOTOR MANAGEMENT RELAY

Instruction Manual

Firmware Rev.: 269P.D6.0.4

CANADA

215 Anderson Avenue, Markham, Ont., L6E 1B3 Tel: (905) 294-6222 Fax: (905) 201-2098 Internet: http://www.ge.com/edc/pm

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1 INTRODUCTION

1.1 Motor Protection Requirements................1-1

1.2 269 Relay Features..................................1-1

1.3 Typical Applications.................................1-1

1.4 Order Code/Information..........................1-3

1.5 Technical Specifications...........................1-4

2 INSTALLATION

2.1 Physical Dimensions...............................2-1

2.2 Mounting.................................................2-6

2.3 External Connections...............................2-6

2.4 Control Power........................................2-12

2.5 Phase CT Inputs....................................2-12

2.6 Ground CT Input....................................2-15

2.7 Trip Relay Contacts...............................2-15

2.8 Alarm Relay Contacts............................2-16

2.9 Auxiliary Relay #1 Contacts...................2-16

2.10 Auxiliary Relay #2 Contacts.................2-16

2.11 RTD Sensor Connections.....................2-17

2.12 Emergency Restart Terminals..............2-18

2.13 External Reset Terminals.....................2-18

2.14 Analog Output Terminals

(Non-Isolated)......................................2-18

2.15 Programming Access Terminals...........2-18

2.16 Display Adjustment..............................2-19

2.17 Front Panel Faceplate..........................2-19

2.18 269 Drawout Relay..............................2-19

2.19 Meter Option Installation......................2-23

3 SETUP AND USE

3.1 Controls and Indicators............................3-2

3.2 269 Relay Display Modes........................3-6

3.3 ACTUAL VALUES Mode..........................3-6

3.3a Starts/Hour Timer...............................3-16

3.3b Time Between Starts Timer..................3-16

3.3c Cause of Last Trip................................3-16

3.3d Cause of Last Event.............................3-16

3.4 SETPOINTS Mode.................................3-16

3.5 HELP Mode..........................................3-41

3.6 TRIP/ALARM Mode...............................3-41

3.7 Phase CT and Motor Full Load Current

Setpoints..............................................3-44

3.8 Acceleration Time Setpoint....................3-44

3.9 Inhibits..................................................3-44

3.10 Unbalance Setpoints............................3-45

3.11 Ground Fault (Earth Leakage)

Setpoints............................................ 3-46

3.12 Undercurrent Setpoints........................3-49

3.13 Rapid Trip / Mechanical Jam Setpoints3-49

3.14 Short Circuit Setpoints.........................3-50

3.15 Immediate Overload Alarm Level

Setpoint...............................................3-50

3.16 Stator RTD Setpoints...........................3-50

3.17 Other RTD Setpoints............................3-51

3.18 Overload Curve Setpoints....................3-51

3.19 Thermal Capacity Alarm......................3-55

3.20 Thermal Memory.................................3-55

3.21 Emergency Restart..............................3-56

3.22 Resetting The 269 Relay......................3-57

3.23 269 Relay Self-Test..............................3-57

3.24 Statistical Data Features.....................3-58

3.25 Factory Setpoints................................3-58

3.26 Meter Option.......................................3-58

4 TESTING

4.1 Primary Injection Testing.........................4-1

4.2 Secondary Injection Testing.....................4-1

4.3 Phase Current Input Functions................4-1

4.4 Ground Fault Current Functions..............4-4

4.5 RTD Measurement Tests.........................4-4

4.6 Power Failure Testing..............................4-5

4.7 Analog Current Output............................4-5

4.8 Routine Maintenance Verification.............4-5

4.9 Dielectric Strength (Hi-Pot) Test...............4-5

5 THEORY OF OPERATION

5.1 Hardware................................................5-1

5.2 Firmware.................................................5-1

6 APPLICATION EXAMPLES

6.1 269 Relay Powered from One of Motor

Phase Inputs..........................................6-1

6.2 Loss of Control Power Due to Short Circuit

or Ground Fault......................................6-1

6.3 Example Using FLC Thermal Capacity

Reduction Setpoint.................................6-1

APPENDIX A

269 UNBALANCE EXAMPLE........................A-1

APPENDIX B

269 Thermal Model.......................................B-1

269 RTD Bias Feature...................................B-2

APPENDIX C

269 RTD Circuitry.........................................C-1

APPENDIX D

2φ CT Configuration......................................D-1

APPENDIX E

Asymmetrical Starting Current......................E-1

APPENDIX F

269 Do's and Don'ts Checklist.......................F-1

APPENDIX G

Ground Fault and Short Circuit Instantaneous

Elements...............................................G-1

APPENDIX H

I. 269 CT Withstand......................................H-1

II. CT Size and Saturation.............................H-1

APPENDIX I

269 Commissioning Summary.......................I-1

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GLOSSARY

TABLE OF CONTENTS

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1 INTRODUCTION

1.1 Motor Protection Requirements

Three phase AC motors have become standard in modern industry. These motors are generally rugged and very reliable when used within their rated limits. Newer motors, however, tend to be designed to run much closer to these operational limits and thus, there is less margin available for any type of abnormal supply, load, or operating conditions.

In order to fully protect these motors, a modern protective device is required. Accurate stator and rotor thermal modeling is necessary to allow the motor to operate within its thermal limits and still give the maximum desired output. As well, other features can be incorporated into a modern relay to fully protect the motor, the associated mechanical system, and the motor operator from all types of faults or overloads.

Motor thermal limits can be exceeded due to increased current from mechanical overloads or supply unbalance. Unbalance can greatly increase heating in the rotor because of the large negative sequence current components present during even small voltage unbalances. A locked or stalled rotor can cause severe heating because of the associated large currents drawn from the supply. Many motor starts over a short period of time can cause overheating as well. Phase-to-phase and phase-to-ground faults can also cause damage to motors and hazards to personnel. Bearing overheating and loss of load can cause damage to the mechanical load being driven by the motor.

The ideal motor protection relay should monitor the rotor and stator winding temperatures exactly and shut off the motor when thermal limits are reached. This relay should have an exact knowledge of the temperature and proper operating characteristics of the motor and should shut down the motor on the occurrence of any potentially damaging or hazardous condition.

The GE Multilin Model 269 Motor Management Relay uses motor phase current readings combined with stator RTD temperature readings to thermally model the motor being protected. The relay also monitors the motor and mechanical load for faults and problems. With the addition of a GE Multilin meter (MPM), the 269 may also monitor voltages and power and perform several protection functions based on these values.

alphanumeric display. A built-in "HELP" function can instruct the user on the proper function of each of the programming keys and on the meaning of each displayed message.

One 269 relay is required per motor. Phase and ground fault currents are monitored through current transformers so that motors of any line voltage can be protected. The relay is used as a pilot device to cause a contactor or breaker to open under fault conditions; that is, it does not carry the primary motor current.

All setpoints are stored in the 269 non-volatile memory within the relay. Thus, even when control power is removed from the 269, all relay setpoints and pre-trip values will remain intact.

The 269 can provide one of various output signals for remote metering or programmable controller attachment. Analog signals of motor current as a percentage of full load, hottest stator RTD temperature, percentage of phase CT secondary current, motor thermal capacity, or bearing temperature are available by simple field programming. A total of four output relays are provided on the 269, including a latched trip relay, an alarm relay, and two auxiliary relays. All output relays may be programmed via the keypad to trip on specific types of faults or alarms.

When an output relay becomes active, the 269 will display the cause of the trip, and if applicable, the lock-out time remaining. Pre-trip values of average and individual line motor current, unbalance, ground fault current, and maximum stator RTD temperature are stored by the 269 and may be recalled using the keypad.

The correct operation of the GE Multilin 269 relay is continually checked by a built-in firmware self-test routine. If any part of the relay malfunctions under this self-test, an alarm indication will tell the operator that service is required.

1.3 Typical Applications

The many features of the 269 make it an ideal choice for a wide range of motor protection applications. Versatile features and controls allow the relay to protect associated mechanical equipment as well as the motor. The 269 should be considered for the following and other typical uses:

1.2 269 Relay Features

The GE Multilin Model 269 Motor Management Relay is a modern microcomputer-based product designed to provide complete, accurate protection for industrial motors and their associated mechanical systems. The 269 offers a wide range of protection, monitoring, and diagnostic features in a single, integrated package. All of the relay setpoints may be programmed in the field using a simple 12-position keypad and 48 character

1. Protection of motors and equipment from operator abuse.

2. Protection of personnel from shock hazards due to winding shorts or earth leakage current from moisture.

3. Protection of gears, pumps, fans, saw mills, cutters, and compressors from mechanical jam.

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1 INTRODUCTION

Table 1-1 Model 269 Relay Features

Protection Features

-Overloads

-Stator Winding Overtemperature (Alarm, High Alarm and Trip)

-Multiple Starts

-Short Circuit

-Locked Rotor

-Rapid Trip/Mechanical Jam

-Unbalance/Single Phasing

-Ground Fault (Alarm and Trip)

-Bearing Overtemperature (Alarm and Trip)

-Undercurrent (Alarm and Trip)

-Variable Lock-Out Time

- Phase Reversal (Meter Option)

Operational Features

-Microcomputer controlled

-Keypad programmable

-48 character alphanumeric display

-Built-in "HELP" function

-Eight selectable standard overload curves

-Continual relay circuitry self-check

Monitoring and Display Features

-Negative sequence phase current unbalance measurement

-Ground fault (earth leakage) current measurement

-Up to six stator RTD inputs

-Two additional RTD inputs

-Monitoring of motor ambient air temperature

-Display of all SETPOINTS or ACTUAL VALUES upon request

-Display of relay TRIP/ALARM and HELP messages

Communications and Control Features

-One latched, main trip relay

-One alarm relay

-Two auxiliary relays

-Emergency restart capability

-Pre-trip alarm warnings

-4-20mA output of motor current as a percentage of full load, motor thermal capacity, hottest stator RTD temperature, percentage of phase CT secondary current, or bearing RTD

Statistical and Memory Features

-Recall of all pre-trip motor values

-Tamperproof setpoints stored in non-volatile memory

-Microcomputer "learns" motor inrush current

-Accumulation of motor running hours

Voltage and Power Metering (available with MPM)

-Display of 3 phase or line voltages, kWatts, kVars, Power Factor, and frequency.

-Protection features based on Voltage, Power Factor, kVars, and voltage sensed phase reversals.

-Pre-trip values of average voltage, kWatts, kVars, Power Factor, and frequency.

-Accumulated MegaWattHours.

4. Protection for loss of suction for pumps or loss of air flow for fans using the undercurrent feature.

5. Protection of motor and load bearings from excessive heat buildup due to mechanical wear.

6. Protection of motors operated in environments with varying ambient temperatures.

7. Complete protection, allowing maximum motor utilization with minimum downtime, for all AC motors.

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1.4 Order Code/Information

1 INTRODUCTION

The model 269 relay is almost entirely field programmable. The information shown above must be specified when the relay is ordered, as these options are not selectable in the field. Additional features can be made available on special order by contacting the GE Multilin factory.

** See Glossary for definitions

* CT information, failsafe code, and contact ar-

rangement must be specified for drawout relays only; on standard 269's these features are field selectable.

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1 INTRODUCTION

1.5 Technical Specifications

Phase Current Inputs

conversion: calibrated RMS, sample time 2ms range: 0.05 to 12 × phase CT primary amps set-

point full scale: 12 × phase CT primary amps setpoint accuracy: ± 0.5% of full scale

(0.05 to 2 × phase CT primary amps set-

point)

± 1.0% of full scale

(over 2 × phase CT primary amps set-

point) Frequency: 20–400 Hz

Ground Fault Current Input

conversion: calibrated RMS, sample time 2ms range: 0.1 to 1.0 × G/F CT primary amps set-

point (5 Amp secondary CT)

1.0 to 10.0 amps 50:0.025A (2000:1 ratio)

full scale: 1 × G/F CT primary amps setpoint

(5 Amp secondary CT)

10 amps (2000:1 CT) accuracy: ± 4% of G/F CT primary amps setpoint

(5 Amp secondary CT)

± 0.3 amps primary (2000:1 CT) Frequency: 20–400 Hz

Overload Curves

curves: 8 curves fixed shape trip time accuracy: ± 1 sec. up to 13 sec.

± 8% of trip time over 13 sec.

detection level: ± 1% of primary CT amps

Unbalance

display accuracy:± 2 percentage points of true negative

sequence unbalance (In/Ip)

Running Hours Counter

accuracy: ± 1%

Relay Lock-out Time

accuracy: ± 1 minute with control power applied

± 20% of total lock-out time with no con-

trol power applied

Trip/Alarm Delay Times

accuracy: ± 0.5 sec. or 2% of total time, whichever

is greater with the exception of:

1. "INST."setpoints: 20–45ms

2. Ground Fault 0.5 Second delay: +/150 msec.

3. Ground Fault 250 msec delay: +75 msec, -150 msec.

4. Metering setpoints (Page 7): +/- 1.5sec or 2% of total time

RTD Inputs

sensor types: 10 OHM copper

100 OHM nickel 120 OHM nickel

100 OHM platinum (specified with order) display accuracy: ± 2 C trip/alarm setpoint range: 0-200 °C dead band: 3 C maximum lead resistance:25% of RTD 0 °C resistance

Analog Current Output (4-20 mA standard)

PROGRAMMABLE OUTPUT 0-1 mA 0-20 mA 4-20 mA MAX LOAD

2000 Ω 300 Ω 300 Ω

MAX OUTPUT 1.01 mA 20.2 mA 20.2 mA

accuracy: ± 1% of full scale reading polarity: terminal 58 ("-") must be at

ground potential (i.e. output is

not isolated) Isolation: non-isolated, active source Update Time: 250 ms max.

Communications

Type: RS485 2-wire, half duplex, isolated Baud Rate: 300, 1200, 2400 Protocol: Subset of Modbus® RTU Functions: Read/write setpoints (03/16),

Read actual values (03/04)

Relay Contacts

VOLTAGE

30 VDC 10 30 10

RESISTIVE 125 VDC 10 30 0.5

250 VDC 10 30 0.3

30 VDC 10 30 5 INDUCTIVE 125 VDC 10 30 0.25 (L/R=7ms) 250 VDC 10 30 0.15 RESISTIVE 120 VAC 10 30 10

250 VAC 10 30 10

INDUCTIVE 120 VAC 10 30 4

PF=0.4 250 VAC 10 30 3 CONFIGURATION FORM C NO/NC CONTACT MATERIAL SILVER ALLOY MINIMUM PERMISSIBLE LOAD 5 VDC, 100 mA

MAKE/CARRY

CONTINUOUS

MAKE/CARRY

0.2 sec

12 VAC, 100 mA

BREAK

Switch Inputs

Type: dry contacts

Differential Relay Input

relay response time: 100 msec. maximum (contact

closure to output relay activation)

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1 INTRODUCTION

CT Burden Due to Connection of 269 Relay

CT INPUT BURDEN

(AMPS) (VA)

1 0.04 43

PHASE CT 4 0.5 31

(1A) 13 4.8 28

5 0.06 2.4

PHASE CT 20 1 2.5

(5A) 65 8.5 2.01

G/F CT 5 0.08 3

(5A) 10 0.3 3

G/F CT 0.025 0.435

(50:0.025) 0.1 3.29

0.5 50

CT Thermal Withstand

Phase CT & G/F 5 amp tap:3 × - continuous

6 × - 40 sec 12 × - 3 sec

G/F 50:0.025 mA 6 × - continuous

Control Power (Includes Tolerances)

frequency: 50/60 Hz 24 VDC, range: 20-30 VDC 48 VDC, range: 30-55 VDC 120 VAC/125 VDC, range: 80-150 VAC/VDC 240 VAC/250 VDC, range: 160-300 VAC/VDC max. power consumption: 20 VA Voltage low ride-through time:

100ms (@ 120VAC/125VDC)

NOTE:Relay can be powered from either AC or DC

source. If Control Power input exceeds 250 V, an external 3A fuse must be used rated to the required voltage.

Fuse Specifications

T3.15A H 250V Timelag high breaking capacity

Dielectric Strength

2200 VAC, 50/60 Hz for 1 sec. GROUND (Terminal 42) to

Output Contacts (Terminals 29 through 40) Control Power (Terminals 41 & 43) Current Transformer Inputs (Terminals 72 through 83)

NOTE: If Hi-Pot tests are performed, jumper J201 beside terminal 43 should be placed in the "HIPOT" position. Upon completion of Hi-Pot tests, the jumper should be placed in the "GND" position. See Fig. 4.3.

(mΩ)

696 Ω 329 Ω 200 Ω

Type Tests

Dielectric Strength: 2.0 kV for 1 minute to relays,

CTs, power supply Insulation Resistance:IEC255-5,500Vdc Transients: ANSI C37.90.1 Oscillatory 2.5kV/1MHz

ANSI C37.90.1 Fast Rise 5kV/10ns Ontario Hydro A-28M-82 IEC255-4 Impulse/High Frequency Disturbance

Class III Level Impulse Test: IEC 255-5 0.5 Joule 5kV RFI: 50 MHz/15W Transmitter EMI: C37.90.2 Electromagnetic Interference

@ 150 MHz and 450 MHz, 10V/m Static: IEC 801-2 Static Discharge Humidity: 95% non- condensing Temperature: -25°C to +60°C ambient Environment: IEC 68-2-38 Temperature/Humidity

Cycle Dust/Moisture: NEMA 12/IP53

Ambient Temperature and Storage Temperature

-25°C to +60°C

Packaging

Shipping box: 11.40" x 7.50" x 16.00" (WxHxD)

290mm x 190mm x 410mm (WxHxD)

Ship weight: 3.5 kg

7.75 lb.

269 Plus drawout: Shipping box: 13.25" x 12.50" x 20.50" (LxHxD)

340mm x 320mm x 520mm

Ship weight: 12 kg

26.4 lb.

Certifications

ISO: Manufactured to an ISO9001 certified program UL: UL recognized under E83849 CSA: Approved under LR41286 CE: Conforms to IEC 947-1, IEC 1010-1 Overvoltage Category: II Pollution Degree: 2 IP Code: 40X

Note: 269 Drawout does not meet CE compliance.

WARNING:HAZARD may result if the product is

not used for intended purposes. This equipment can only be serviced by trained personnel.

1-5

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1 INTRODUCTION MPM OPTION SPECIFICATIONS

PHASE CURRENT INPUTS

Conversion: true rms, 64 samples/cycle CT input: 1A & 5A secondary Burden: 0.2 VA Overload: 20xCT for 1s, 100xCT for 0.2s Range: 1-150% of CT pri Frequency: up to 32nd harmonic Accuracy: ± 1% of display

VOLTAGE INPUTS

Conversion: true rms, 64 samples/cycle VT pri/Sec: direct or 120-72000:69-240 Input range: 20-600 VAC Full scale: 150/600 VAC autoscaled Frequency: up to 32nd harmonic Accuracy: ± 1% of display

ANALOG OUTPUTS

MAX LOAD MAX OUTPUT 1.1 mA 21 mA

0-1 mA (T1 Option) 4-20 mA (T20 Option)

2400 Ω 600 Ω

Accuracy: ±2% of full scale reading Isolation: 50V isolated, active source

MEASURED VALUES

OUTPUT

EMI: C37.90.2 Electromagnetic Inter-

ference @ 150 MHz and 450

MHz, 10V/m Static: IEC 801-2 Static Discharge Humidity: 95% non-condensing Temperature: -10°C to +60°C ambient Environment: IEC 68-2-38 Tempera-

ture/Humidity Cycle Dust/moisture: NEMA 12/IP53

PACKAGING

Shipping box: 8½" × 6" × 6" (L×H×D) 215cm ×

152cm × 152 cm (L×H×D)

Ship weight: 5 lbs/2.3 kg

CERTIFICATION

ISO: Manufactured to an ISO9001 certified

program UL: Recognized under E83849 CSA: Recognized under LR41286

Note: It is recommended that all relays be powered up at least once per year to avoid deterioration of electrolytic capacitors in the power supply.

Due to updating technology, specifications may be improved without notice.

PARAMETER ACCURACY (%

OF FULL SCALE)

VOLTAGE ±0.2% 20% TO 100% OF VT kW ±0.4% 0-999,999.99 kW kVar ±0.4% 0-999,999.99 kVar kVA ±0.4% 0-999,999.99 kVA kWh ±0.4% 0-999,999,999 kWh PF ±1.0% ±0.00-1.00 FREQUENCY ±0.02Hz 20.00-70.00 Hz

RANGE

CONTROL POWER

Input: 90 – 300 VDC or

70 – 265 VAC, 50/60 Hz

Power: nominal 10VA

maximum 20VA

Holdup: 100 ms typical (@ 120 VAC/125

VDC)

TYPE TESTS

Dielectric strength: 2.0 kV for 1 minute to relays,

CTs, VTs, power supply Insulation resistance: IEC255-5,500Vdc Transients: ANSI C37.90.1 Oscillatory

2.5kV/1MHz

ANSI C37.90.1 Fast Rise

5kV/10ns

Ontario Hydro A-28M-82

IEC255-4 Impulse/High

Frequency Disturbance

Class III Level Impulse test: IEC 255-5 0.5 Joule 5kV RFI: 50 MHz/15W Transmitter

1-6

Page 10

2.1 Physical Dimensions

2 INSTALLATION

The 269 relay is contained in a compact plastic and metal housing with the keypad, display, and all indicators located on the front panel. The physical dimensions of the 269 unit are given in Figure 2.1.

GE Multilin also provides phase and ground fault CTs if required. Dimensions for these are shown in Figure

2.2a, Figure 2.2b, Figure 2.2c, and Figure 2.2d. Dimensions of a are for 100:5 to 1000:5 phase CT's; for the dimensions of 50:5 and 75:5 CT's, consult factory.

Note

Figure 2.1

Physical Dimensions

2-1

Page 11

2 INSTALLATION

2-2

Figure 2.2a

Phase CT Dimensions

Page 12

2 INSTALLATION

Figure 2.2b

Ground CT (50:0.025) 3” and 5” window

2-3

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2 INSTALLATION

2-4

Figure 2.2c

Ground CT (50:0.025) 8” window

Page 14

2 INSTALLATION

Figure 2.2d

Ground CT (x:5) Dimensions

2-5

Page 15

2 INSTALLATION

2.2 Mounting

The 269 should be positioned so that the display is visible and the front panel keypad is accessible. A cut-out is made in the mounting panel and the unit is mounted as shown in Figure 2.3. Four washers and 10-32 × 3/8" mounting screws are provided.

Although the 269 circuitry is internally shielded, to minimize noise pickup and interference the relay should be placed away from high current conductors or sources of strong magnetic fields. Connections to the relay are made through terminal blocks and CTs located on the rear of the unit.

2.3 External Connections

The connections made to the 269 relay will vary depending on the programming of the unit. It is not necessary to use all of the connections provided; a minimal configuration would include supply power, three phase current CT inputs and the Trip relay contacts wired in series with the contactor control relay or circuit breaker shunt trip coil. Connections to these and the other terminals outlined below will be explained in the following sections.

2-6

Figure 2.3

Relay Mounting

Page 16

Figure 2.4, Figure 2.6, and Figure 2.7 show typical connections to the 269 relay.

NOTE: The rear of the 269 relay shows output relay contacts in their power down state. Figure 2.4, Figure

2.6, and Figure 2.7 show output relay contacts with power applied, no trips or alarms, Factory Configurations, i.e. TRIP - fail-safe, ALARM - non-failsafe, AUX.1 - non-fail-safe, AUX.2 - fail-safe). See Figure 2.5 for a complete list of all possible output relay contact states. See SETPOINTS page 5 for a description of the RELAY FAILSAFE CODE.

2 INSTALLATION

Table 2-1

Inputs

-Supply Power L(+), G, N(–) - universal AC/DC supply

-Phase CTs

-Ground Fault CTs (core balance CT)

-6 Stator RTDs

-2 additional RTDs

-Emergency Restart keyswitch

-External Reset pushbutton

-Programming Access jumper or keyswitch

-Meter Communication Port

Outputs

-4 Sets of Relay Contacts (NO/NC)

-Programmable Analog Current Output Terminals

WARNING: HAZARD may result if the product is

269 External Connections

not used for intended purposes. This equipment can only be serviced by trained personnel.

2-7

Page 17

2 INSTALLATION

2-8

Figure 2.4

Relay Wiring Diagram (AC Control Power)

Page 18

2 INSTALLATION

Figure 2.5

WARNING: In locations where system voltage disturbances cause voltage levels to dip below the range specified in the Specifications (1.5), any relay contact programmed failsafe may change state. Therefore, in any application where the "process" is more critical than the motor, it is recommended that the trip relay contacts be programmed non-failsafe. In this case, it is also recommended that the AUX2

Output Relay Contact States

contacts be monitored for relay failure. If, however, the motor is more critical than the "process," then the trip contacts should be programmed failsafe.

2-9

Page 19

2 INSTALLATION

2-10

Figure 2.6

Relay Wiring Diagram (Two Phase CTs)

Page 20

2 INSTALLATION

Figure 2.7

Relay Wiring Diagram (DC Control Power)

2-11

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2 INSTALLATION

2.4 Control Power

The relay is powered on using any one of four different switching power supplies: 120-125 VAC/VDC, 240-250 VAC/VDC, 48 VDC, or 24 VDC. The first two versions have been designed to work with either AC or DC control power. Maximum power consumption for the unit is 20 VA.

The 269 will operate properly over a wide range of supply voltages typically found in industrial environments (see control power specifications in section 1.5). When the supply voltage drops below the minimum, the output relays will return to their power down states but all setpoints and statistical data will remain stored in the relay memory. Motor lock-out time will be adhered to with or without control power applied. If control power is removed, the relay keeps track of the Motor Lockout time for up to an hour.

Control power must be applied to the 269 relay, and the relay programmed, before the motor is energized. Power is applied at terminals 41, 42, and 43 which are terminal blocks having #6 screws.

Note: Chassis ground terminal 42 must be connected directly to the dedicated cubicle ground bus to prevent transients from damaging the 269 resulting from changes in ground potential within the cubicle. Terminal 42 must be grounded for both AC and DC units for this reason.

Verify from the product identification label on the back of the relay that the control voltage matches the intended application. Connect the control voltage input to a stable source of supply for reliable operation. A 3.15A, slow blow mini fuse (see Fuse Specifications in Technical Specifications) is accessible from the back of the 269 by removing the perforated cover. See Figure 2.8 for details on replacing the fuse. Using #10 gauge wire or ground braid, connect terminal 42 to a solid ground which is typically the copper ground bus in the switchgear. Extensive filtering and transient protection is built into the 269 to ensure reliable operation under harsh industrial operating environments. Transient energy must be conducted back to the source through filter ground. The filter ground is separated from the safety ground terminal 42 at jumper J201 on the back of the relay to allow dielectric testing of a switchgear with a 269 wired up. Jumper J201 must be removed during dielectric testing. It must be put back in place once the dielectric testing is done.

When properly installed, the 269 will meet the interference immunity requirements of IEC 1000-43/EN61000-4-3; EN 61000-4-6. It also meets the emission requirements of IEC CISPR11/EN55011 and EN50082-2.

2.5 Phase CT Inputs

One CT for each of the three motor phases is required to input a current into the relay proportional to the motor phase current. The phase sequence must be as shown in Figure 2.4 and Figure 2.7. The CTs used can have either a 1 amp or 5 amp secondary and should be chosen so that the motor full load current is between 75 and 95 percent of the rated CT primary amps. The CT ratio should thus be of the form n:1 or n:5 where n is between 20 and

1500. The ratio of the CT used must be programmed into the 269 (see section 3.7).

The CT connections to the relay are made between the ":1" and "COM" terminals for 1 amp CTs or between the ":5" and "COM" terminals for CTs with a 5 amp secondary.

The connections to the 269 internal phase CTs are made directly via #10 screws.

CTs should be selected to be capable of supplying the required current to the total secondary load which includes the 269 relay burden of 0.1 VA at rated secondary current and the connection wiring burden. The CT must not saturate under maximum current conditions which can be up to 8 times motor full load during starting or up to 20 times during a short circuit. Only CTs rated for protective relaying should be used since metering CTs are usually not rated to provide enough current during faults. Typical CT ratings are:

CSA (Canada): Class10L100 10=accuracy,

L=protection, 100=capacity, higher is better

ANSI (USA): Class C 100 B4 C or T=protection,

100=capacity, higher is better, B4=accuracy

IEC (Europe): 20 VA Class 5P20 P=protection,

20VA=capacity, higher is better

Refer to Appendix H for details on CT withstand, CT size and saturation, as well as the safe use of 600V class window type CTs on a 5 kV circuit.

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2 INSTALLATION

NOTES

REMOVE CONTROL POW ER FROM THE RELAY

BEFORE ATTEMPTING TO CHANGE THE FUSE.

WARNING :

CAUTION

ENSURE THAT THE PERFORATED COVER CLEARS ALL COMPONENTS

WHEN BEING RE-INSTALLED.

FOR DRAW OUTS, CONTACT THE FACTORY.

THIS PROCEDURE DOES NOT APPLY TO 269/269Plus DRAWOUT VERSIONS.

CAUTION

AND COMPLETELY PLUG GED IN THE MATING 968023A2.DWG

ENSURE THAT POWER SUPPLY PCB IS FIRM LY IN PLACE

CONNECTOR.

CAUTION

SWITCHGEAR PANEL

CAUTION

PROCEDURE

REMOVING FUSE:

REPLAC ING FU SE:4IN TECHNICAL SPECIFICATIONS.

USE MINI CARTRIDGE FUSE 3.15A/250V. SEE FUSE SPECIFIC ATIO NS

USING A FUSE PULLER, REMOVE THE FUSE FRO M HO LDER.

REMOVE PER FORATED COVER BY U NSCREW ING THE (4)- #8 -32 SCREW S.

REMOVING PERFOR ATED COVER:

REMOVE PO WER SUPPLY BY UNSCREW ING THE (4)- #8 -32 x 3/8" LG. STAND OFFS

& UNPLUGG ING THE INTERBOARD CONN ECTO R.

REMOVING POW ER SUPPLY PCB:

THIS PROCEDURE APPLIES TO 269/269Plus RELAYS

WITH REVISION "C" ONLY.

C = REVISION "C" UNITS.

EXAMPLE: SERIAL N O. C5261392

POSITION THE FUSE IN THE PULLER AND PLACE BACK IN FUSE HOLDER.

PERFORATED COVER & SCREWS.

RE-INSTALL POWER SUPPLY PCB, STA NDOFFS,

Figure 2.8

Replacing a blown fuse

2-13

Page 23

2 INSTALLATION

SHIELDED

CABLE

Figure 2.9a

Core Balance Ground CT Installation using Shielded Cable

UNSHIELDED

CABLE

2-14

Figure 2.9b

Core Balance Ground CT Installation using Unshielded Cable

Page 24

2 INSTALLATION

2.6 Ground CT Input

All current carrying conductors must pass through a separate ground fault CT in order for the ground fault function to operate correctly. If the CT is placed over a shielded cable, capacitive coupling of phase current into the cable shield during motor starts may be detected as ground current unless the shield wire is also passed through the CT window; see Figure 2.9a. If a safety ground is used it should pass outside the CT window; see Figure 2.9b.

The connections to the 269 internal ground CT are made directly via #10 screws. The ground CT is connected to terminals 73 and 72 for a 5 amp secondary CTs, or to terminals 73 and 74 for a GE Multilin 50:0.025A (2000:1 ratio) CTs, as shown in Figure 2.4, Figure 2.5, and Figure 2.7. The polarity of the ground CT connection is not important. It is recommended that the two CT leads be twisted together to minimize noise pickup. If a 50:0.025A (2000:1 ratio) ground CT is used, the secondary output will be a low level signal which allows for sensitive ground fault detection.

NOTE: The GE Multilin 2000:1 CT is actually a 50:0.025A CT recommended for resistance grounded systems where sensitive ground fault detection is required. If higher levels are to be detected, a 5 Amp secondary CT should be used.

For a solidly grounded system where higher ground fault currents will flow, a 5 amp secondary CT with a primary between 20 and 1500 A may be used to surround all phase conductors. The phase CTs may also be residually connected to provide ground sensing levels as low as 10% of the phase CT primary rating. For example, 100:5 CTs connected in the residual configuration can sense ground currents as low as 10 amps (primary) without requiring a separate ground CT. This saves the expense of an extra CT, however 3 phase CTs are required. If this connection is used on a high resistance grounded system verify that the ground fault alarm and trip current setpoints are below the maximum ground current that can flow due to limiting by the system ground resistance. Sensing levels below 10% of the phase CT primary rating is not recommended for reliable operation.

2.7 Trip Relay Contacts

The main control relay or shunt trip coil of the motor starter or circuit breaker should be connected to the Trip relay contacts of the 269. These contacts are available as normally open (NO), normally closed (NC), and can switch up to 10 amps at either 250 VAC or 30 VDC with a resistive load. Silver cadmium oxide contacts are used because of their ability to handle high inrush currents on inductive loads. Contact GE Multilin if these contacts are to be used for carrying low currents since they are not recommended for use below 0.1 amps. Connection to the motor contactor or breaker is shown in Figure 2.4, Figure 2.5, and Figure 2.7.

The Trip output relay will remain latched after a trip. This means that once this relay has been activated it will remain in the active state until the 269 is manually reset. The Trip relay contacts may be reset by pressing the RESET key (see section 3.1) if motor conditions allow, or by using the Emergency Restart feature (see section 2.12), or the External Reset terminals, or by remote communications via the RS485 port.

The Trip relay may be programmed to be fail-safe or non-fail-safe. When in the fail-safe mode, relay activation or a loss of power condition will cause the relay contacts to go to their power down state. Thus, in order to cause a trip on loss of power to the 269, output relays should be programmed as fail-safe.

The Trip relay cannot be reset if a lock-out is in effect. Lock-out time will be adhered to regardless of whether control power is present or not. A maximum of one hour lockout time is observed if control power is not present.

The Trip relay can be programmed to activate on any combination of the following trip conditions: overload, stator RTD overtemperature, rapid trip, unbalance, ground fault, short circuit, RTD overtemperature, acceleration time, number of starts per hour, single phase (see section 3.4 for factory preset configurations).

Connections to the Trip relay contacts are made via a terminal block which uses #6 screws.

When the phase CTs are connected residually, the secondaries must be connected in such a way to allow the 269 to sense any ground current that might be flowing. To correctly display ground current and trip or alarm on ground fault, the connection to the 269 must be made at terminals 72 and 73 as shown in Figure 2.4 and Figure 2.7. These terminals are designed to accept input from a 5A secondary CT. The 269 must also be programmed for a 5A secondary ground CT with the primary being equal to the phase CT primary. This is done in SETPOINTS, page 1.

NOTE: The rear of the 269 relay shows output relay contacts in their power down state. Figure 2.4, Figure

2.6, and Figure 2.7 show output relay contacts with power applied, no trips or alarms, and Factory Configurations in effect (i.e. TRIP - fail-safe, ALARM non-fail-safe, AUX.1 - non-fail-safe, AUX.2 - fail-safe). See Figure 2.5 for a list of all possible contact states.

WARNING: In locations where system voltage disturbances cause voltage levels to dip below the range specified in the Specifications (1.5), any relay contact programmed failsafe may change

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2 INSTALLATION

state. Therefore, in any application where the "process" is more critical than the motor, it is recommended that the trip relay contacts be programmed non-failsafe. In this case, it is also recommended that the AUX2 contacts be monitored for relay failure. If, how ever, the motor is more critical than the "process" then the trip contacts should be programmed failsafe.

2.8 Alarm Relay Contacts

These contacts are available as normally open (NO), normally closed (NC), with the same ratings as the Trip relay but can only be programmed to activate when alarm setpoint levels are reached. (On a Drawout version of 269, only one set of alarm contacts is available and the user must specify normally open or normally closed and failsafe or nonfailsafe when ordering). Thus these contacts may be used to signal a low level fault condition prior to motor shut-down.

Conditions which can be programmed to activate the relay are alarm levels for the following functions: immediate overload; mechanical jam; unbalance; undercurrent; ground fault; stator RTD overtemperature; RTD overtemperature; broken RTD; low temperature or shorted RTD; and self-test alarm (see section 3.4 for factory preset configurations). The relay can be configured as latched or unlatched and fail-safe or non-fail-safe.

These contacts may be used for alarm purposes or to trip devices other than the motor contactor. For example, the ground fault and short circuit functions may be directed to Auxiliary relay #1 to trip the main circuit breaker rather than the motor starter.

Connections to the relay contacts are made via a terminal block which uses #6 screws.

NOTE: The rear of the 269 relay shows output relay contacts in their power down state. Figure 2.4, Figure

2.10 Auxiliary Relay #2 Contacts

This relay provides another set of NO/NC contacts with the same ratings as the other relays. (On a Draw-out version of 269, only one set of Aux.2 contacts is available and the user must specify normally open or normally closed when ordering). This relay is different from the others in the fact that it is permanently programmed as latched and fail-safe.

This relay may be programmed to activate on any combination of alarm conditions (see section 3.4 for factory preset configurations). The feature assignment programming is thus the same as for the Alarm relay.

Connections to the Alarm relay contacts are made via a terminal block which uses #6 screws.

NOTE: The rear of the 269 relay shows output relay contacts in their power down state. Figure 2.4, Figure

2.6 and Figure 2.7 show output relay contacts with power applied, no trips or alarms, and Factory Configurations in effect (i.e. TRIP - fail-safe, ALARM non-fail-safe, AUX.1 - non-fail-safe, AUX.2 - fail-safe). See Figure 2.5 for a list of all possible contact states.

2.9 Auxiliary Relay #1 Contacts

Auxiliary relay #1 is provided to give an extra set of NO/NC contacts which operate independently of the other relay contacts. (On a Drawout version of 269, only one set of Aux.1 contacts is available and the user must specify normally open or normally closed and failsafe or non-failsafe when ordering). This auxiliary relay has the same ratings as the Trip relay.

Auxiliary relay #1 can be configured as latched or unlatched and fail-safe or non-fail-safe. The conditions that will activate this relay can be any trip or alarm indications (see section 3.4 for factory preset configurations).

Connections to the relay contacts are made via a terminal block which uses #6 screws.

NOTE: The rear of the 269 relay shows output relay contacts in their power down state. Figure 2.4, Figure

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2 INSTALLATION

Figure 2.10

2.11 RTD Sensor Connections

Up to six resistance temperature detectors (RTDs) may be used for motor stator temperature monitoring. The remaining RTD inputs may be used for motor and load bearing, or other temperature monitoring functions. All RTDs must be of the same type. RTD #8 may be used to monitor ambient air temperature. This is done to enhance protection in environments where the ambient temperature varies considerably. The number of stator RTDs used together with RTD trip and alarm temperatures must be programmed into the 269 (see sections 3.16, 3.17). The RTD type to be used must be specified when ordering the 269 relay. If the type of RTD in use is to be changed, the 269 must be returned to the factory.

Each RTD has four connections to the 269 relay as shown in Figure 2.4, Figure 2.6, and Figure 2.7. Since the RTD indicates temperature by the value of its resistance, it is necessary to compensate for the resistance of the connecting wires, which is dependent on lead length and ambient temperature. The 269 uses a circuit to cancel this resistance and reads only the actual RTD resistance. Correct operation will occur providing all three wires are of the same length and the resistance of each lead is not greater than 25% of the RTD 0°C resistance. This can be accomplished by using identical lengths of the same type of wire. If 10 ohm copper RTDs are to be used, special care should be taken to keep the lead resistance as low as possible.

If RTD #8 is to be used for ambient air temperature measurement, the RTD should be placed and mounted somewhere in the motor cooling air intake flow. The sensor should be in direct contact with the cooling air but not with any surface that is at a temperature other than the cooling air. This RTD is

RTD Wiring

selected for ambient temperature use in page 5 of SETPOINTS mode.

If no RTD sensor is to be connected to any of the RTD terminals on the 269, the terminals may be left open.

If fewer than 6 stator RTDs are to be employed, they should be connected to the lowest numbered relay RTD connections. For example, if 3 stator RTDs are to be used they should be connected to the terminals for RTD1, RTD2, and RTD3 (terminals #1-12). Other RTDs should be connected to the terminals for RTD7RTD10 (terminals #13-28) as shown in Figure 2.4.

The connections are made via terminal blocks which can accommodate up to #16 AWG multi-strand wire.

Note: Shielded, three-wire cable must be used in industrial environments to prevent noise pickup. Wherever possible, the RTD leads should be kept close to grounded metal casings and avoid areas of high electromagnetic or radio frequency fields. RTD leads should not run adjacent to, or in the same conduit as high current carrying wires. It is recommended to use a three wire shielded cable of #18 AWG copper conductors. The shield connection of the RTD should not be grounded at the sensor end as there is an internal ground on the 269. This arrangement prevents noise pickup that would otherwise occur from circulating currents due to differences in ground potentials on a doubly grounded shield.

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2 INSTALLATION

2.12 Emergency Restart Terminals

If it is desired to override relay trips or lock-outs and restart the motor, a normally open keyswitch should be installed between terminals 54 and 55. Momentarily shorting these terminals together will cause the thermal memory of the 269 to discharge to 0% (if RTD input to thermal memory is enabled, thermal memory can be reduced to 0% by keeping terminals 54 and 55 shorted together for more than 11 seconds; see section 3.20). The Emergency Restart terminals can thus be used to override an OVERLOAD TRIP. Shorting the Emergency Restart terminals together will also decrement the relay's internal starts/hour counter by 1 and therefore allow the operator to override a STARTS/HOUR inhibit or time between starts inhibit.

Note: This option should be used only when an immediate restart after a lock-out trip is required for process integrity or personnel safety. Discharging the thermal memory of the 269 gives the relay an unrealistic value for the thermal capacity remaining in the motor and it is possible to thermally damage the motor by restarting it. Thus, complete protection may be compromised in order to restart the motor using this feature.

A twisted pair of wires should be used. Connection to the 269 is made via a terminal block which can accommodate up to #16 AWG multi-strand wire.

2.13 External Reset Terminals

An external reset switch, which operates similarly to the keypad RESET key (see section 3.1), can be connected to terminals 56 and 57 for remote reset operation. The switch should have normally open contacts. Upon closure of these contacts the relay will be reset. This external reset is equivalent to pressing the keypad RESET key. Keeping the External Reset terminals shorted together will cause the 269 to be reset automatically whenever motor conditions allow.

A twisted pair of wires should be used. Connection to the 269 is made via a terminal block which can accommodate up to #16 AWG multi-strand wire.

2.14 Analog Output Terminals (NonIsolated)

Terminals 58 and 59 of the 269 are available for an analog current output representing one of: percentage of motor thermal capacity used; motor current as a percentage of full load (i.e. 0.25-2.5 XFLC); hottest stator RTD temperature as a percentage of 200°C; RTD#7 (bearing) temperature as a percentage of 200°C; or CT secondary current

as a percentage of CT secondary amps rating. The choice of output is selected in page 5 of SETPOINTS mode. This selection can be made or changed at any time without affecting the protective features of the relay.

The output current range is factory default at 4-20 mA. However, this range may be enlarged in page 5 of SETPOINTS mode. 4 mA output corresponds to a low scale reading (i.e. 0% thermal capacity used,

0.25xFLC, 0 RTD#7 temperature, or 0 A phase CT secondary current). 20 mA output current corresponds to a high scale reading (i.e. 100% thermal capacity used,

2.5xFLC or lower phase current, 200 stator RTD and RTD#7 temperature, or either 1 A or 5 A phase CT secondary depending on the CT used).

This output is an active, non isolated current source suitable for connection to a remote meter, chart recorder, programmable controller, or computer load. Current levels are not affected by the total lead and load resistance as long as it does not exceed 300 ohms for the 4-20 mA or the 0-20 mA range (2000 ohms for 0-1 mA range). For readings greater than 100% of full scale the output will saturate at 20.2 mA.

This analog output is not isolated. Terminal 58 is internally connected to system ground. Consequently the negative terminal of the connected load device must be at ground potential. When isolation is necessary, an external two-wire isolated transmitter should be used between the 269 and the load (e.g. PLC).

A twisted pair of wires should be used. Connection to the 269 is made via a terminal block which can accommodate up to #16 AWG multi-strand wire.

C hottest stator RTD temperature,

C for hottest

2.15 Programming Access Terminals

When a jumper wire is connected between ACCESS terminals 52 and 53 all setpoints and configurations can be programmed using the keypad. Once programming is complete the jumper will normally be removed from these terminals. When this is done all actual and setpoint values can still be accessed for viewing; however, if an attempt is made to store a new setpoint value the message "ILLEGAL ACCESS" will appear on the display and the previous setpoint will remain intact. In this way all of the programmed setpoints will remain secure and tamperproof. Alternatively, these terminals can be wired to an external keyswitch to permit setpoint programming upon closure of the switch. For additional tamper proof protection, a software access code may be programmed on Page 6 of SETPOINTS. See section 3 (Setup and Use).

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Page 28

A twisted pair of wires should be used for connection to an external switch. Connection to the 269 is made via a terminal block which can accommodate up to #16 AWG multi-strand wire.

2.16 Display Adjustment

Once the 269 relay has been installed and input power applied, the contrast of the LCD display may have to be adjusted. This adjustment has been made at the factory for average lighting conditions and a standard viewing angle but can be changed to optimize the display readability in different environments. To alter the display contrast the trimpot on the rear of the unit marked "CONTRAST" must be adjusted with a small slotted screwdriver.

2 INSTALLATION

thin panels, the relay will not seat properly and the door will not shut over the relay when installed on a thick panel. Loosening the screws and moving the relay forward before retightening will fix the problem.

RELAY REMOVAL - Open the hinged door. Next remove the two ten finger connecting plugs making sure the top one is removed first. Swivel the cradleto-case hinged levers at each end of the 269 cradle assembly and slide the assembly out of the case.

RELAY INSTALLATION - Slide the 269 cradle assembly completely into the case. Swivel the hinged levers in to lock the 269 cradle assembly into the drawout case. Install the two ten finger connecting plugs making sure the bottom plug is installed first. Close the hinged door and secure with the captive screw.

2.17 Front Panel Faceplate

The front panel faceplate is composed of a polycarbonate material that can be cleaned with isopropyl or denatured alcohol, freon, naphtha, or mild soap and water.

2.18 269 Drawout Relay

The model 269 relay is available in a drawout case option. The operation of the relay is the same as described elsewhere in this manual except for the differences noted in this section. The physical dimensions of the drawout relay are as shown in Figure 2.11. The relay should be mounted as shown in Figure 2.12.

The drawout 269 relay can be removed from service without causing motor shut-down. This can be useful for replacing, calibrating, or testing units.

RELAY MOUNTING - Make cutout as shown and drill six 7/32" holes on mounting panel. Approximately 21/2" should be clear at the top and bottom of the cutout in the panel for the hinged door. Ensure that the five #6-32 nuts are removed from the threaded studs in the mounting flange and that the drawout chassis has been removed from the drawout case. Install the case from the rear of the mounting panel by aligning the five #6-32 threaded case studs to the previously drilled holes. With the studs protruding through the holes secure the case on the right hand side with two #6-32 nuts provided. Install the hinged door on the front of the mounting panel using three #6-32 nuts provided.

NOTE: There must be at least ½" clearance on the hinged side of the drawout relay to allow the door to open.

IMPORTANT NOTE

relay cradle assembly the top ten finger connecting plug must be withdrawn first. This isolates the 269 output relay contacts before power is removed from the relay. When installing the drawout relay cradle assembly the bottom ten finger connecting plug must be installed first. This causes power to be applied to the 269 relay before the output relay contacts are placed in the circuit.

After a 269 relay cradle assembly has been removed from the drawout case it is recommended that the hinged door be closed in order to reduce the risk of electric shock.

Due to the hardware configuration of the drawout relay shorting bars, the RELAY FAILSAFE CODE (SETPOINTS, page 5) should not be changed without consulting the factory. Spare shorting bars are included with each drawout specifically for the required modification. Wiring for the 269 drawout is shown in Figure 2.13. If it is required that any of the output relay configurations in Figure 2.13 be different than shown, this information must be stated when the relay is ordered.

The 269 Drawout does not meet the IEC947-1 and IEC1010-1.

No special ventilation requirements need to be observed during the installation of this unit

: When removing the drawout

FIELD ADJUSTMENTS - There are four screws holding the plastic 269 case to the drawout cradle. These screw into holes which are slotted to compensate for panel thickness. If the 269 case is mounted at the extreme end of the slot intended for

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2 INSTALLATION

2-20

Figure 2.11

269 Drawout Relay Physical Dimensions

Page 30

2 INSTALLATION

Figure 2.12

269 Drawout Relay Mounting

2-21

Page 31

2 INSTALLATION

2-22

Figure 2.13

269 Drawout Relay Typical Wiring Diagram

Page 32

2 INSTALLATION

2.19 Meter Option Installation

The addition of a GE Multilin MPM (Motor Protection Meter) option allows the 269 user to monitor and assign protective features based on voltage and power measurement. Either meter also provides four isolated analog outputs representing: Current, Watts, Vars, and Power Factor. These outputs from the meter can provide the signals for the control of the motor or a process.

MPM External Connections

Physical dimensions for the MPM and the required cutout dimensions are shown in Figure 2.16. Once the cutout and mounting holes are made in the panel, use the eight #6 self tapping screws to secure the relay.

MPM Wiring Signal wiring is to box terminals that can accommodate wire as large as 12 gauge. CT, VT and control power connections are made using #8 screw ring terminals that can accept wire as large as 8 gauge.

Consult the wiring Figure 2.17 through 2.22 for suggested wiring. For proper operation of the MPM and 269 set, MPM control power and phase CTs/VTs must be connected. Other features may be wired depending on the MPM model ordered.

Control Power (5/6/7/8)

Control power supplied to the MPM must match the installed power supply. If the applied voltage does not match, damage to the unit may occur.

A universal AC/DC power supply is standard. It covers the range 90 - 300 VDC and 70 - 265 VAC 50/60 Hz. It is not necessary to make any adjustment to the MPM as long as the control voltage falls within this range. A low voltage power supply is available as an option. It covers the range 20 - 60 VDC and 20 48 VAC 50/60 Hz. Verify from the product identification label on the back of the MPM that the control voltage matches the intended application. Connect the control voltage input to a stable source of supply for reliable operation. A 2 amp fuse is accessible from the back of the MPM by sliding back the fuse access door. Using #8 gauge wire or ground braid, connect terminals 5 & 6 to a solid system ground which is typically a copper bus in the switchgear. Extensive filtering and transient protection is built into the MPM to ensure reliable operation under harsh industrial operating environments. Transient energy must be conducted back to the source through filter ground terminal 5. The filter ground terminal (5) is separated from the safety ground terminal (6) to allow dielectric testing of switchgear with a MPM wired up. Connections to the filter ground terminal must be removed during dielectric testing.

030

Figure 2.14 Control Power Wiring

When properly installed, the MPM will meet the interference immunity requirements of IEC 801 and ANSI C37.90.1.

VT Inputs (1-4) The MPM can accept input voltages from 0 - 600VAC between the voltage inputs (V common (Vn). These inputs can be directly connected or supplied via external VTs. If voltages greater than 600VAC are to be measured, external VTs are required. When measuring line to line quantities using inputs V voltage common input Vn is grounded. This input is used as a reference for measuring the voltage inputs.

, V2, V3) and voltage

, V2 and V3, ensure that the

All connections to the MPM voltage inputs should be connected using HRC fuses with a 2 AMP rating to ensure adequate interrupting capacity.

CT Inputs (9-20) 5 amp or 1 amp current transformer secondaries can be used with the MPM for phase and neutral sensing. Each current input has 3 terminals: 5 amp input, 1 amp input and common. Select either the 1 amp or 5 amp terminal and common to match the phase CT

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2 INSTALLATION

secondary. Correct polarity as indicated in the wiring Figure 2.17 through Figure 2.21 is essential for correct measurement of all power quantities.

CTs should be selected to be capable of supplying the required current to the total secondary load which includes the MPM relay burden of 0.2 VA at rated secondary current and the connection wiring burden.

Serial Communications Port (COM1 - 46,47,48) The MPM will communicate with 269 via COM1. The connection must be made as shown below. The MPM must be connected to only one 269 relay at any given time for successful communication.

MPM Analog Output The Analog Out Scale Factor setpoint is entered to set the Full Scale value for the MPM analog outputs (KWATTS and KVARS). The value entered here is the multiplier that is multiplied by 100 kW to determine the meter’s analog output Full Scale for KWATTS, or by 30 KVAR to determine the meter’s analog output Full Scale for KVAR. 4 mA represents 0 KWATTS and 0 KVARS and 20 mA represents full scale. Average RMS current is produced in analog form where the MPM 4-20 mA is equivalent to 0 A to 1×CT rating. Power factor is produced in analog form where 4/12/20 mA represents -0/1/+0 power factor value respectively.

MPM

RS485 CO M1

46 47 48

C O M - +

Figure 2.15 MPM and 269 Communication Wiring

The 269 communicates the following information to the meter module: 1) 269/meter Protocol Revision; 2) Reset MWH; 3) CT Primary; 4) VT Ratio; 5) Analog Output Scale Factor; and 6) Checksum.

The meter, in turn, sends back the following information to the 269:

1) Echo Protocol Revision

2) Vab, Vbc, Vca or Van, Vbn, Vcn (depending on

whether the VTs are connected phase to phase or phase to neutral)

3) Average Voltage

4) kW

5) kvar

6) Frequency

7) Voltage Phase Reversal Status

8) VT Wiring Configuration (open delta or 2 input wye)

9) kW sign

10) kvar sign

11) Meter Revision

12) Power Factor

13) Power Factor sign indication

+: Lead –: Lag

14) MWh

15) Checksum This exchange of information takes place once every

0.5 second.

269

Meter

85 84

+ -

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2 INSTALLATION

Figure 2.16

MPM Mounting Dimensions

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2 INSTALLATION

2-26

Figure 2.17

MPM to 269 Typical Wiring (4-wire Wye, 3 VTs)

Page 36

2 INSTALLATION

Figure 2.18

MPM to 269 Typical Wiring (4-wire Wye, 2 VTs)

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2 INSTALLATION

2-28

Figure 2.19

MPM to 269 Typical Wiring (3-wire Delta, 2 VTs)

Page 38

2 INSTALLATION

Figure 2.20

MPM to 269 Typical Wiring (2 CT)

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2 INSTALLATION

2-30

Figure 2.21

MPM Wiring (Open Delta)

Page 40

3 SETUP AND USE

Figure 3.1 Front Panel Controls and Indicators

3-1

Page 41

3 SETUP AND USE

3.1 Controls and Indicators

Once the 269 relay has been wired and control power applied, it is ready to be programmed for the given application. Programming is accomplished using the

Table 3-1 Controls and Indicators

No. Name Description

FUNCTION: The ACTUAL VALUES key allows the user to examine all of the actual motor operating parameters. There are seven pages of ACTUAL VALUES data:

page 1: Phase Current Data page 2: RTD Temperature Data page 3: Motor Capacity Data page 4: Statistical Data page 5: Pre-trip Data page 6: Learned Parameters page 7: Metering Data

EFFECT: Pressing this key will put the relay into ACTUAL VALUES mode. The flash message,

ACTUAL VALUES HAS SEVENACTUAL VALUES HAS SEVEN PAGES OF DATAPAGES OF DATA

will be displayed for 2 seconds. The beginning of page 1 of ACTUAL VALUES mode will then be dhown:

12 position keypad and 48 character alphanumeric display shown in Figure 3.1. The function of each key on the keypad and each of the indicators is briefly explained in Table 3-1.

PAGE 1: ACTUAL VALUESPAGE 1: ACTUAL VALUES PHASE CURRENT DATAPHASE CURRENT DATA

USE: This key can be pressed at any time, in any mode to view actual motor values. To go from page to page the PAGE UP and PAGE DOWN keys can be used. To go from line to line within a page the LINE UP and LINE DOWN keys can be used.

FUNCTION: The SET POINTS key allows the user to examine and alter all trip, alarm, and other relay setpoints. There are seven pages of setpoints data:

page 1: Motor Amps Setpoints page 2: RTD Setpoints page 3: O/L Curve Setpoints page 4: Relay Configuration page 5: System Configuration page 6: GE Multilin Service Codes page 7: Metering Setpoints

EFFECT: Pressing this key will put the relay into SETPOINTS mode. The flash message,

SETPOINTS HAS SEVENSETPOINTS HAS SEVEN PAGES OF DATAPAGES OF DATA

will be displayed for 2 seconds. The beginning of page 1 of SETPOINTS mode will then be shown:

PAGE 1: SETPOINT VALUESPAGE 1: SETPOINT VALUES MOTOR AMPS SETPOINTSMOTOR AMPS SETPOINTS

3-2

Page 42

No. Name Description

USE: This key can be pressed at any time, in any mode, to view or alter relay setpoints. To go from page to page the PAGE UP and PAGE DOWN keys can be used. To go from line to line within a page the LINE UP and LINE DOWN keys can be used. To alter a setpoint, the VALUE UP and VALUE DOWN keys can be used. All setpoints will increment and decrement to pre-determined limits. When the desired value is reached, the STORE key must be used to save the new setpoint. If an altered setpoint is not stored the previous value will still be in effect. If the Access jumper is not installed a STORE will not be allowed and the flash message "ILLEGAL ACCESS" will be displayed for 2 seconds.

FUNCTION: The HELP key allows the user to obtain information on the function and use of each of the other keys on the keypad and on each of the ACTUAL VALUES, SETPOINTS, and TRIP/ALARM messages.

EFFECT: Pressing this key will put the relay into HELP mode. If this key is pressed with the first line of a page (ie. a page header) on the display the message,

Press KEY of interest orPress KEY of interest or HELP again for detailsHELP again for details

will be displayed. To obtain information on the function of a particular key, the key must be pressed. To obtain information on the previously displayed ACTUAL VALUES, SETPOINTS, or TRIP/ALARM message the HELP key should be pressed again. If this key is pressed with any other message shown on the display, only information on the previous line will be available.

USE: This key will have no effect when a flash message or HELP message is shown on the display. Once HELP mode is entered the LINE UP and LINE DOWN keys can be used to view the HELP message. The CLEAR key is used to exit from HELP mode and return to the previous display mode. The ACTUAL VALUES and SET POINTS keys can also be used to exit HELP mode.

4,5

6,7

FUNCTION: The PAGE DOWN and PAGE UP keys allow the user to scan the next or previous pages of either ACTUAL VALUES or SETPOINTS modes. If either key is held for more than 1/2 second the next or previous pages will be selected at a fast rate.

EFFECT: Pressing the PAGE DOWN key will cause the display to show the first line of the next page of information. Pressing the PAGE UP key will cause the display to show the first line of the previous page.

USE: These keys can be used any time the relay is in either the ACTUAL VALUES or SETPOINTS modes.

FUNCTION: The LINE DOWN, and LINE UP keys allow the user to scan the next or previous lines of the currently selected page. If either key is held for more than 1/2 second the next or previous lines will be selected at a fast rate.

EFFECT: Pressing the LINE DOWN key will cause the display to show the next line of the currently selected page of information. Pressing the LINE UP key will cause the display to show the line immediately in front of the currently displayed line.

USE: These keys can be used at any time in any relay mode of operation. If the display shows the last line of a page the LINE DOWN key will have no effect. If the display shows the first line of a page the LINE UP key will have no effect.

3 SETUP AND USE

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3 SETUP AND USE

No. Name Description

8,9

CLEAR

FUNCTION: The VALUE UP and VALUE DOWN keys allow the user to alter the currently selected setpoint. If either key is held for more than 1/2 second the setpoint selected will increment or decrement at a fast rate. If either key is held for more than 2 seconds the setpoint selected will increment or decrement at a very fast rate.

EFFECT: Pressing the VALUE UP key will cause the currently displayed setpoint value to increment. Pressing the VALUE DOWN key will cause the currently displayed setpoint value to decrement. For YES/NO questions, pressing either key will cause the answer to change. Any changed setpoint will not be used internally until the STORE key is pressed.

USE: These keys can be pressed any time a setpoint is displayed in SETPOINTS mode or when a YES/NO question is displayed in ACTUAL VALUES mode (see STORE key). When the desired setpoint value is reached the STORE key is used to save it. If an altered setpoint is not stored the previous value will still be in effect.

FUNCTION: The RESET key allows the user to reset the 269 after any of the latched output relays have become active so that a motor start can be attempted.

EFFECT: Pressing this key will reset (ie. return to an inactive state) any of the active output relay contacts if motor conditions allow (see below). The message,

RESET NOT POSSIBLE -RESET NOT POSSIBLE Condition still presentCondition still present

will be displayed if any active output relays cannot be reset USE: A latched relay cannot be reset if the trip/alarm condition persists (eg. an

OVERLOAD TRIP lock-out or a high RTD temperature).Pre-trip motor values may be viewed in ACTUAL VALUES mode page 5 (Pre-trip Data). If an immediate restart is required after an OVERLOAD or INHIBIT LOCKOUT the Emergency Restart terminals (see section 2.12) may be shorted together. This will reduce the lock-out time to 0 minutes.

FUNCTION: In SETPOINTS mode the CLEAR key allows the user to return an altered, non-stored setpoint to its original value. In HELP mode the CLEAR key allows the user to return to the previous display mode.

EFFECT: When this key is pressed in SETPOINTS mode any altered, currently displayed setpoint will be returned to its original value. When this key is pressed in HELP mode the relay will return to the line and page of the mode active when the HELP key was pressed.

USE: This key can be used in SETPOINTS or HELP modes only. In SETPOINTS mode it can only be used when a displayed setpoint has been changed with the VALUE UP/VALUE DOWN keys but has not yet been stored. After a setpoint has been stored the CLEAR key will have no effect. In HELP mode the CLEAR key can be used any time there is a HELP message on the display.

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3 SETUP AND USE

No. Name Description

12 FUNCTION: The STORE key allows the user to store new setpoints into the 269

relay's internal memory. EFFECT: When this key is pressed in SETPOINTS mode the currently displayed

setpoint will be stored and will immediately come into effect. When a setpoint is stored the flash message,

NEW SETPOINT STOREDNEW SETPOINT STORED

will appear on the display. The STORE key can be pressed in ACTUAL VALUES mode to clear the maximum

actual temperature data. To do this the following message from page 2 of ACTUAL VALUES mode must be displayed after the "NO" value is altered to say "YES" by pressing the VALUE UP/VALUE DOWN key:

CLEAR LAST ACCESS DATA?CLEAR LAST ACCESS DATA? YESYES

Then when the STORE key is pressed the following flash message will appear on the display:

last access data clearedlast access data cleared

13 14 15 16 17

TRIP ALARM AUX. 1 AUX. 2 SERVICE

The maximum actual temperature data (see section 3.24) will then be cleared. The STORE key can be pressed in ACTUAL VALUES mode to start a new motor commissioning (ie. clear statistical data). To do this the following message from page 4 of ACTUAL VALUES mode must be displayed after the "NO" value is altered to say "YES" by pressing the VALUE UP/VALUE DOWN key:

START COMMISSIONING?START COMMISSIONING? YESYES

Then when the STORE key is pressed the following flash message will appear on the display:

COMMISSIONING DATACOMMISSIONING DATA clearedcleared

All statistical data (see section 3.24) will then be cleared. USE: The STORE key can be used only in SETPOINTS mode to store new set-

points, or in ACTUAL VALUES mode to clear the maximum actual temperature data or start a new commissioning (ie. clear statistical data). This key will have no effect unless the Access terminals are shorted together. LED indicator used to show the state of the Trip output relay. When on, the trip relay is active. When off, the Trip relay is inactive. LED indicator used to show the state of the Alarm output relay. When on, the Alarm relay is active. When off, the Alarm relay is inactive. LED indicator used to show the state of Auxiliary relay #1. When on, Aux. relay #1 is active. When off, Aux. relay #1 is inactive. LED indicator used to show the state of Auxiliary relay #2. When on, Aux. relay #2 is active. When off, Aux. relay #2 is inactive. LED indicator used to show the result of the 269 self-test feature. When flashing, the relay has failed the self-test and service is required. When on steady, the supply voltage may be too low. This LED may be on momentarily during relay power up.

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3 SETUP AND USE

3.2 269 Relay Display Modes

The 269 relay display is used for viewing actual motor values, setpoint values, HELP messages, and TRIP/ALARM messages. This is accomplished by having the relay in one of four possible modes of operation:

1. ACTUAL VALUES mode

2. SETPOINTS mode

3. HELP mode

4. TRIP/ALARM mode The relay will operate correctly, giving full motor pro-

tection, regardless of which display mode is currently in effect. The different modes affect only the data that appears on the 269 relay's 48 character alphanumeric display.

TRIP/ALARM mode can only be entered by having one or more of the trip or alarm level setpoints exceeded. The other display modes can be entered using the ACTUAL VALUES, SET POINTS, or HELP keys (see section 3.1).

The ACTUAL VALUES and SETPOINTS modes are based on a book-like system of "pages" and "lines". One line from any page may be displayed at any given time. To "turn" a page, the PAGE UP and PAGE DOWN keys are used. To scan the lines on a page the LINE UP and LINE DOWN keys are used. In the HELP and TRIP/ALARM modes only the LINE UP and LINE DOWN keys are needed.

3.3 ACTUAL VALUES Mode

In ACTUAL VALUES mode, any of the parameters monitored or calculated by the 269 relay may be viewed by the user. This mode is divided into seven separate pages of data each of which contains a different group of actual motor values. The seven pages and the lines in each page are as shown in Table 3-2.

When control power is applied to the relay the following power up message will be displayed:

GE MULTILIN 269 RELAYGE MULTILIN 269 RELAY REVISION XXX XX.XXREVISION XXX XX.XX

After this the display will show, (factory default settings)

I1= XXX I2= XXXI1= XXX I2= XXX I3= XXX (AMPS)I3= XXX (AMPS)

which is in page 1 of ACTUAL VALUES mode. A description of each display mode is given in the fol-

lowing sections.

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Actual Values, Pg. 1 3 SETUP AND USE

Table 3-2 ACTUAL VALUES

Page Line Information Line Description

1 1

PAGE 1: ACTUAL VALUESPAGE 1: ACTUAL VALUES

ACTUAL VALUES page 1 header.

PHASE CURRENT DATAPHASE CURRENT DATA

3 *

MOTOR STARTINGMOTOR STARTING ###1###2###3###4###5###6###1###2###3###4###5###6

I1= XXXX I2= XXXXI1= XXXX I2= XXXX I3= XXXX (AMPS) ---I3= XXXX (AMPS) ---

I(3 ph avg) = XXXX AMPSI(3 ph avg) = XXXX AMPS Max Stator RTD = XXX CMax Stator RTD = XXX C

Motor starting current level (seen only during a motor start).

Motor phase current data. ("---" becomes "RUN" when motor is running.)

Average of 3 phase currents. Maximum of 6 stator RTDs. This line is shown only if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “YES”. This setpoint is located on page 2 of Setpoints, line 3.

I(3 ph avg) = XXXX AMPSI(3 ph avg) = XXXX AMPS T.C. USED = XXX ERCENTT.C. USED = XXX ERCENT

UNBALANCE RATIO (In/Ip)UNBALANCE RATIO (In/Ip)

Average of 3 phase currents. Thermal capacity used. This line is shown only if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “NO”.

Ratio of negative to positive sequence currents.

U/B = XXX PERCENTU/B = XXX PERCENT

GROUND FAULT CURRENTGROUND FAULT CURRENT

Actual ground fault current.

G/F = XX.X AMPSG/F = XX.X AMPS

ST/HR TIMERS (MIN)ST/HR TIMERS (MIN)

Starts/hour timers (see section 3.3a).

XX XX XX XX XXXX XX XX XX XX

TIME BETWEEN STARTSTIME BETWEEN STARTS

Time between starts timer (see section 3.3b).

TIMER = XX MINTIMER = XX MIN

nnnnnn11nnnnnn22nnnnnn33nnnnnn44nnnnnn55 nnnnnn11nnnnnn22nnnnnn33nnnnnn44nnnnnn55

END OF PAGE ONEEND OF PAGE ONE

This line can be examined to ensure that all pixels in the 40 character liquid crystal display are functional.

Last line of page 1.

ACTUAL VALUESACTUAL VALUES

* If line 2 is programmed to be displayed, it will only show when the motor is starting. It will then default to line 3.

Programming which line the display will default to is done in Setpoint Values page 5.

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3 SETUP AND USE Actual Values, Pg. 2

Page Line Information Line Description

2 1

3 •

4 •

5 •

6 •

7 •

8 •

9 •

10 •

PAGE 2: ACTUAL VALUESPAGE 2: ACTUAL VALUES RTD TEMPERATURE DATARTD TEMPERATURE DATA

NO RTDs ARE CONNECTEDNO RTDs ARE CONNECTED TO THE 269TO THE 269

HOTTEST STATOR RTDHOTTEST STATOR RTD RTD # X = XXX CRTD # X = XXX C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #1= XXX DEGREES CRTD #1= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #1= XXX DEGREES CRTD #1= XXX DEGREES C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #2= XXX DEGREES CRTD #2= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #2= XXX DEGREES CRTD #2= XXX DEGREES C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #3= XXX DEGREES CRTD #3= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #3= XXX DEGREES CRTD #3= XXX DEGREES C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #4= XXX DEGREES CRTD #4= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #4= XXX DEGREES CRTD #4= XXX DEGREES C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #5= XXX DEGREES CRTD #5= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #5= XXX DEGREES CRTD #5= XXX DEGREES C

STATOR TEMPERATURESTATOR TEMPERATURE RTD #6= XXX DEGREES CRTD #6= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #6= XXX DEGREES CRTD #6= XXX DEGREES C

RTD TEMPERATURERTD TEMPERATURE RTD #7= XXX DEGREES CRTD #7= XXX DEGREES C

ACTUAL VALUES page 2 header. (see note at end of Actual Values page 2).

This line is shown only if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “NO”. This setpoint is located on page 2 of Setpoints, line 3.

Maximum stator RTD temperature.

RTD #1 temperature.

RTD #2 temperature.

RTD #3 temperature.

RTD #4 temperature.

RTD #5 temperature.

RTD #6 temperature.

RTD #7 temperature.

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Actual Values, Pg. 2 3 SETUP AND USE

Page Line Information Line Description

11 •

RTD TEMPERATURERTD TEMPERATURE

RTD #8 temperature.

RTD #8= XXX DEGREES CRTD #8= XXX DEGREES C

Seen when RTD #8 is used for ambient sensing on model 269

Maximum stator RTD temperature since last access.

Maximum RTD #7 temperature since last access.

Maximum RTD #8 temperature since last access.

Used to clear the data in the last 5 lines (see section 3.1, STORE key).

Last line of page 2.

12 •

13 •

14 •

15 •

AMBIENT TEMPERATUREAMBIENT TEMPERATURE RTD #8= XXX DEGREES CRTD #8= XXX DEGREES C

MAX. STATOR SINCE LASTMAX. STATOR SINCE LAST ACCESS: RTD# X = XXXACCESS: RTD# X = XXX

MAXIMUM RTD#7 TEMP SINCEMAXIMUM RTD#7 TEMP SINCE LAST ACCESS: XXX DEGREES CLAST ACCESS: XXX DEGREES C

MAXIMUM RTD#8 TEMP SINCEMAXIMUM RTD#8 TEMP SINCE LAST ACCESS = XXX CLAST ACCESS = XXX C

CLEAR LAST ACCESS DATA?CLEAR LAST ACCESS DATA? XXX XXX

END OF PAGE TWOEND OF PAGE TWO ACTUAL VALUESACTUAL VALUES

In the above messages, temperatures may be displayed in either Celsius (indicated by “C”) or Fahrenheit (indicated by “F”) depending on the setting in Setpoints pg.2 line 2.

• Lines 3 to 15 in the above messages are not shown if the answer to the question “ARE THERE ANY RTDs

CONNECTED?” is “NO”. This setpoint is located on page 2 of Setpoints, line 3.

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3 SETUP AND USE Actual Values, Pg. 3

Page Line Information Line Description

3 1

PAGE 3: ACTUAL VALUESPAGE 3: ACTUAL VALUES MOTOR CAPACITY DATAMOTOR CAPACITY DATA

ESTIMATED TIME TOESTIMATED TIME TO TRIP = XXX SECONDSTRIP = XXX SECONDS

MOTOR LOAD AS A PERCENTMOTOR LOAD AS A PERCENT FULL LOAD = XXX PERCENTFULL LOAD = XXX PERCENT

THERMAL CAPACITYTHERMAL CAPACITY USED = XXX PERCENTUSED = XXX PERCENT

END OF PAGE THREEEND OF PAGE THREE ACTUAL VALUESACTUAL VALUES

ACTUAL VALUES page 3 header.

Estimated time to overload trip under present conditions (seen only during overloads).

Actual motor current as a percentage of full load.

Percentage of motor thermal capacity used.

Last line of page 3.

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Actual Values, Pg. 4 3 SETUP AND USE

Page Line Information Line Description

4 1

PAGE 4: ACTUAL VALUESPAGE 4: ACTUAL VALUES

ACTUAL VALUES page 4 header.

STATISTICAL DATASTATISTICAL DATA

3 •

RUNNING HRS SINCE LASTRUNNING HRS SINCE LAST COMMISSIONING XXXXX HRSCOMMISSIONING XXXXX HRS

MEGAWATTHOURS SINCE LASTMEGAWATTHOURS SINCE LAST

Total motor running hours since last commissioning.

Total megawatthours since last commissioning

COMMISSIONING XXXXX MWHRCOMMISSIONING XXXXX MWHR

START NEW COMMISSIONINGSTART NEW COMMISSIONING XXX XXX

END OF PAGE FOUREND OF PAGE FOUR

Used to clear the data in the last 14 lines (see section 3.1, STORE key).

Last line of page 4.

ACTUAL VALUESACTUAL VALUES

• Available only if a meter is online.

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3 SETUP AND USE Actual Values, Pg. 5

Page Line Information Line Description

5 1

12 •

13 •

14 •

15 •

16 •

PAGE 5: ACTUAL VALUESPAGE 5: ACTUAL VALUES PRE-TRIP DATAPRE-TRIP DATA

XXXXXXXXXXXXXXXXXXXXXX

CAUSE OF LAST EVENT:CAUSE OF LAST EVENT: XXXXXXXXXXXX XXXXXXXXXXXX

CAUSE OF LAST TRIP:CAUSE OF LAST TRIP: XXXXXXXXXXXX XXXXXXXXXXXX

PRE-TRIP AVERAGE MOTORPRE-TRIP AVERAGE MOTOR CURRENT = XXXXX AMPSCURRENT = XXXXX AMPS

PRE-TRIP PHASE CURRENTPRE-TRIP PHASE CURRENT I1 = XXX AMPSI1 = XXX AMPS

PRE-TRIP PHASE CURRENTPRE-TRIP PHASE CURRENT I2 = XXX AMPSI2 = XXX AMPS

PRE-TRIP PHASE CURRENTPRE-TRIP PHASE CURRENT I3 = XXX AMPSI3 = XXX AMPS

PRE-TRIP U/B RATIOPRE-TRIP U/B RATIO (In/Ip) XXX PERCENT(In/Ip) XXX PERCENT

PRE-TRIP G/F CURRENTPRE-TRIP G/F CURRENT G/F = XXX AMPSG/F = XXX AMPS

PRE-TRIP MAX STATOR RTDPRE-TRIP MAX STATOR RTD RTD # X = XXX C RTD # X = XXX C

PRE-TRIP AVERAGE VOLTAGEPRE-TRIP AVERAGE VOLTAGE VOLTS = XXXXXVOLTS = XXXXX

PRE-TRIP KWATTSPRE-TRIP KWATTS KW = +XXXXXKW = +XXXXX

PRE-TRIP KVARSPRE-TRIP KVARS KVAR = +XXXXXKVAR = +XXXXX

PRE-TRIP POWER FACTORPRE-TRIP POWER FACTOR PF = X.XX LAGPF = X.XX LAG

PRE-TRIP FREQUENCYPRE-TRIP FREQUENCY HZ = XX.XHZ = XX.X

ACTUAL VALUES page 5 header.

This message is only displayed, and defaulted to, when a trip or alarm occurs and describes the trip/alarm condition. Refer to Table 3-4 Trip/Alarm Messages and Fault Diagnosis. See section 3.3c.

This message describes the cause of the last event detected by the 269. See section 3.3d. It will be updated when an event occurs (trip or inhibit).

This message describes the cause of the last trip. It will be updated when a trip occurs. See section 3.3c.

Average motor phase current prior to last relay trip.

I1 motor phase current prior to last relay trip.

I2 motor phase current prior to last relay trip.

I3 motor phase current prior to last relay trip.

Ratio of negative to positive sequence currents prior to last relay trip.

Ground fault current prior to last relay trip. ("=" will be ">" if delay set to 0.0, 0.25, 0.5)

Maximum stator RTD temperature prior to last relay trip. This message is display only if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “YES”. This setpoint is located on page 2 of Setpoints, line 3.

Average voltage prior to last relay trip

Positive or negative kwatts prior to last relay trip. (See Figure 3.8 for Power Measurement Conventions.)

Positive or negative kvars prior to last relay trip. (See Figure 3.7 for Power Measurement Conventions.)

Power factor prior to last relay trip. The lead or lag word messages are also captured and displayed prior to last relay trip.

Frequency prior to last relay trip

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Actual Values, Pg. 5 3 SETUP AND USE

Page Line Information Line Description

CLEAR PRE-TRIP DATA?CLEAR PRE-TRIP DATA? NO NO

END OF PAGE FIVEEND OF PAGE FIVE

Used to clear all pre-trip data, cause of last event, and cause of last trip.

Data can be cleared before or after the reset of a trip or alarm.

Pre-trip data can be cleared by changing the “NO” to “YES” using the VALUE UP key and storing it. Once the data is cleared, the flash message “PRE-TRIP DATA CLEARED” is displayed for a few seconds.

Once cleared, the cause of last event and cause of last trip messages will be blank, all pre-trip data will be equal to zero, the PF sign will be reset to a default of Lag, and the pre-trip kW and pre-trip kvar signs will be reset to a default of “+”. See section 3.24.

Last line of page 5.

ACTUAL VALUESACTUAL VALUES

• Available only if a GE Multilin MPM meter is installed and online (see Setpoints page 7, line 2)

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3 SETUP AND USE Actual Values, Pg. 6

Page Line Information Line Description

6 1

PAGE 6: ACTUAL VALUESPAGE 6: ACTUAL VALUES LEARNED PARAMETERSLEARNED PARAMETERS

LEARNED Istart (AVG.OF 4LEARNED Istart (AVG.OF 4 STARTS) = XXX AMPSSTARTS) = XXX AMPS

LEARNED Istart (last one) =LEARNED Istart (last one) = XXX AMPSXXX AMPS

END OF PAGE SIXEND OF PAGE SIX ACTUAL VALUESACTUAL VALUES

ACTUAL VALUES page 6 header.

Learned average motor starting current of 4 starts.

Learned motor starting current from last start.

Last line of page 6.

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Actual Values, Pg. 7 3 SETUP AND USE

Page Line Information Line Description

7 1

PAGE 7: ACTUAL VALUESPAGE 7: ACTUAL VALUES

ACTUAL VALUES page 7 header

METERING DATAMETERING DATA

3 •

4 •

5 •

6 •

7 •

8 •

METER MODULEMETER MODULE NOT INSTALLEDNOT INSTALLED

PHASE TO PHASEPHASE TO PHASE VOLTAGE CONNECTIONVOLTAGE CONNECTION

PHASE TO NEUTRALPHASE TO NEUTRAL VOLTAGE CONNECTIONVOLTAGE CONNECTION

Vab = XXXX Vbc = XXXXVab = XXXX Vbc = XXXX Vca = XXXX AVG.= XXXX VVca = XXXX AVG.= XXXX V

Van = XXXX Vbn = XXXXVan = XXXX Vbn = XXXX Vcn = XXXX AVG.= XXXX VVcn = XXXX AVG.= XXXX V

3 PHASE KWATTS3 PHASE KWATTS KW = +XXXXXKW = +XXXXX

3 PHASE KVARS3 PHASE KVARS KVAR = +XXXXXKVAR = +XXXXX

POWER FACTORPOWER FACTOR PF = X.XX LAGPF = X.XX LAG

FREQUENCYFREQUENCY

Appears if meter not on-line (setpoints page 7 line 2)

Appears whether or not the meter is online. When the meter is online, this message displays the VT configuration as connected to the meter. See Figure 2.15, 2.16a, 2.16b and 2.23 through 2.29.

This message is displayed when the meter’s VTs are wired to measure for phase to phase voltage.

This message is displayed when the meter’s VTs are wired for phase to neutral voltage measurement.

Appears whether or not the meter is online. 3 phase to phase voltages. Displayed when the

VT configuration above is phase to phase. 3 phase to neutral voltages. Displayed only

when the VT configuration is phase to neutral. Positive or negative 3 phase kwatts.

See Figure 3.7 for power measurement conventions.

Positive or negative 3 phase kvars. See Figure 3.7 for power measurement conventions.

Power factor and Lead or Lag sign.. See Figure 3.7 for power measurement conventions. Frequency

HZ = XX.XHZ = XX.X

END OF PAGE SEVENEND OF PAGE SEVEN

Last line of page 7

ACTUAL VALUESACTUAL VALUES

• Available only if a GE Multilin MPM meter is installed and on-line (see pg. 7 setpoints, line 2) To place the relay in ACTUAL VALUES mode, the

ACTUAL VALUES key must be pressed. When this is done the following flash message will appear for 2 seconds,

If the relay is in SETPOINTS mode or ACTUAL VALUES mode and no key is pressed for more than four minutes the display will change to, (factory default settings)

ACTUAL VALUES HAS SEVEN ACTUAL VALUES HAS SEVEN PAGES OF DATA PAGES OF DATA

I1= XXX I2= XXXI1= XXX I2= XXX I3= XXX (AMPS)I3= XXX (AMPS)

The display will then show,

which is the second line in page 1 of ACTUAL VALUES

PAGE 1: ACTUAL VALUESPAGE 1: ACTUAL VALUES PHASE CURRENT DATAPHASE CURRENT DATA

which is the beginning of page 1.

mode. This default display line can be changed in page 5 of SETPOINTS mode.

When in this mode the PAGE UP, PAGE DOWN, LINE UP, and LINE DOWN keys (see section 3.1) can be

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3 SETUP AND USE

used to examine all of the actual motor data outlined above.

3.3a Starts/Hour Timer

An individual starts/hour timer is activated each time a motor start condition is detected and starts to time out beginning from 60 minutes. All starts/hour timers can be viewed in Actual Values pg. 1 line 7. If the number of starts/hour programmed in Setpoints pg.1 line 7 is exceeded within one hour, a start/hour inhibit is initiated with a lockout time equal to the smallest start/hour timer. A maximum of five starts/hour may be programmed, or the setpoint turned OFF.

In the case of an emergency, when the lockout time has to be bypassed and an additional start is required, the Emergency Restart button can be pushed (terminals #54 and 55 temporarily shorted) making the smallest start/hour timer zero, resetting the inhibit and effectively allowing an additional start. Note that the other timers continue to time out unaffected.

Every time the Emergency Restart button is pushed, another timer is emptied and an additional start/hour is allowed. For example, pushing the Emergency Restart button again will empty the second timer and two more starts/hour are allowed before another start/hour inhibit is initiated.

3.3b Time Between Starts Timer

This timer corresponds to the “Time Between Starts Time Delay” feature in Setpoints pg. 5 line 24. The time displayed is the actual lockout time that the user has to wait before an additional start can be performed.

This timer is updated continuously until it expires, then a zero is displayed. When the timer expires, this indicates to the user that a start is allowed immediately after a motor stop without any lockout time.

curs. “XXXXXXXXXXX” in the message represents one of the following trips:

Overload Trip Speed Switch Trip Short Circuit Trip Differential Trip Rapid Trip Single Phase Trip Stator RTD Trip Spare Input Trip RTD Trip Power Factor Trip Ground Fault Trip Undervoltage Trip Acceleration Trip Overvoltage Trip Phase Reversal Trip Undercurrent Trip

3.3d Cause of Last Event

An event is defined as a TRIP or an INHIBIT. If the last event was a trip, then the message “CAUSE OF LAST EVENT” and the following message “CAUSE OF LAST TRIP” are the same, mainly displaying the cause of the trip. However, it is possible to have a trip which is immediately followed by an inhibit such as starts/hour, time between starts, start inhibit or backspin timer. In this case “INHIBIT LOCKOUT” is displayed as the “CAUSE OF LAST EVENT” message and the cause of the trip is displayed as the “CAUSE OF LAST TRIP” message. Sometimes only an inhibit activates the TRIP, AUX1 or TRIP and AUX1 relays. This may happen when the motor is intentionally stopped, but more often, it happens accidentally on an unloaded motor when current drops below 5% of CT. 5% of CT is the cutoff point for the 269, where a motor stop condition is registered. In this case, the cause of the last trip is not updated. Only the cause of last event message is updated to show “INHIBIT LOCKOUT”. This message should greatly assist in the diagnosis of the problem, because the activation of the TRIP relay will not be misunderstood and treated as an actual trip. Instead, the solution may be fairly simple to implement, and it may only require that a 52b contact for a breaker, or equivalent for a contactor, be wired to terminals 44 and 45 on the 269, and the setpoint “SPARE INPUT TO READ 52b?” on page 5 of setpoints be changed to

The time between starts timer is equal to zero in the following two cases:

1. If the timer has expired and therefore there’s no lockout time prior to starting again after a motor stop condition is detected.

2. If the “Time Between Starts Time Delay” feature is set to “OFF” in Setpoints pg.5 line 24.

3.3c Cause of Last Trip

The message in Actual Values pg.5 line 3 describes the cause of the last trip. It will be updated when a trip oc-

3-16

3.4 SETPOINTS Mode

In SETPOINTS mode any or all of the motor trip/alarm setpoints may be either viewed or altered. This mode is divided into seven separate pages of data each of which contains a different group of relay setpoints.

To enter SETPOINTS mode the SETPOINTS key must be pressed. When in this mode, if no key is pressed for more than four minutes, the display will automatically go into ACTUAL VALUES mode as explained in section 3.3. To return to SETPOINTS mode the SET POINTS key must be pressed. When this key is pressed the following flash message will appear on the display,

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3 SETUP AND USE

SETPOINTS HAS SEVEN SETPOINTS HAS SEVEN PAGES OF DATA PAGES OF DATA

Then the display will show,

PAGE 1: SETPOINT VALUESPAGE 1: SETPOINT VALUES MOTOR AMPS SETPOINTSMOTOR AMPS SETPOINTS

which is the first line of the first page of SETPOINTS mode. The PAGE UP, PAGE DOWN, LINE UP, and LINE DOWN keys (see section 3.1) may then be used to view all of the SETPOINTS data.

When setpoints are to be changed, the VALUE UP, VALUE DOWN, STORE, and CLEAR keys (see section

3.1) are used. The Access terminals must first be shorted together (see section 2.15). The PAGE UP, PAGE DOWN, LINE UP, and LINE DOWN keys are used to display the setpoints that are to be changed. The setpoints themselves are changed by pressing the VALUE UP or VALUE DOWN keys until the desired setpoint value is reached. To return the setpoint to its original value, the CLEAR key can be used. When the setpoint is adjusted to its proper value the STORE key should be pressed in order to store the setpoint into the 269's internal memory. Once the STORE key is pressed the flash message,

Thus this data must be complete and accurate for the given system.

new setpoint stored new setpoint stored

will appear on the display and the new setpoint value will be used by the 269 relay.

If an attempt is made to store a new setpoint value without the Access terminals shorted together the new value will not be stored and the flash message,

ILLEGAL ACCESS ILLEGAL ACCESS

will appear on the display. To make the setpoints tamperproof the Access terminals should be shorted together only when setpoints are to be changed.

Setpoints may be changed while the motor is running; however it is not recommended to change important protection parameters without first stopping the motor.

Setpoints will remain stored indefinitely in the 269 relay's internal non-volatile memory even when control power to the unit is removed.

All seven pages of data and the lines in each page are as shown in Table 3-3. Also shown are the default settings, the ranges and increments for each setpoint. It should be noted that the 269 relay's motor protection parameters are based on the data entered by the user.

3-17

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3 SETUP AND USE Setpoints, Pg. 1

Table 3-3 SETPOINTS

Page Line Information Line Setpoint Range and Units Manual Ref.

1 1

PAGE 1: SETPOINT VALUESPAGE 1: SETPOINT VALUES MOTOR AMPS SETPOINTSMOTOR AMPS SETPOINTS

PHASE CT RATIOPHASE CT RATIO CT SECONDARY = X AMPCT SECONDARY = X AMP

PHASE CT RATIOPHASE CT RATIO CT PRIMARY = XXXX:XCT PRIMARY = XXXX:X

MOTOR FULL LOAD CURRENTMOTOR FULL LOAD CURRENT FLC= XXXX AMPSFLC= XXXX AMPS

O/L PICKUP LEVEL O/L PICKUP LEVEL LEVEL = 1.05 x FLCLEVEL = 1.05 x FLC

ACCEL.TIME= XXX.X SECONDSACCEL.TIME= XXX.X SECONDS Consult motor data sheetConsult motor data sheet

STARTS/HOUR= XSTARTS/HOUR= X Consult motor data sheetConsult motor data sheet

UNBALANCE ALARM LEVELUNBALANCE ALARM LEVEL U/B ALARM= XX PERCENTU/B ALARM= XX PERCENT

U/B ALARM TIME DELAYU/B ALARM TIME DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

UNBALANCE TRIP LEVELUNBALANCE TRIP LEVEL U/B TRIP= XX PERCENTU/B TRIP= XX PERCENT

U/B TRIP TIME DELAYU/B TRIP TIME DELAY U/B DELAY= XXX SECONDSU/B DELAY= XXX SECONDS

G/F CT RATIO :5 ? XXXG/F CT RATIO :5 ? XXX (NO indicates 2000:1)(NO indicates 2000:1)

GROUND CT PRIMARYGROUND CT PRIMARY

•

GROUND CT = XXX:5GROUND CT = XXX:5

GROUND FAULT ALARM LEVELGROUND FAULT ALARM LEVEL G/F ALARM= XXX AMPSG/F ALARM= XXX AMPS

GROUND FAULT ALARM LEVELGROUND FAULT ALARM LEVEL

•

G/F ALARM= XXX xCTG/F ALARM= XXX xCT

:1 or :5

Factory Value = 5

20-1500 (increments of 1)

Factory Value = 100

10-1500 amps (increments of 1)

Factory Value = 10

1.05-1.25 ×FLC (increments of

0.01)

Factory Value = 1.05

0.5-125.0 or OFF (increments of 0.5)

Factory Value = 10.0

1-5 starts or OFF (increments of 1)

Factory Value = 3

4-30 % or OFF (increments of 1)

Factory Value = 10

3-255 seconds (increments of 1)

Factory Value = 5

4-30 % or OFF (increments of 1)

Factory Value = 15

3-255 seconds (increments of 1)

Factory Value = 5

YES (5 amp secondary) or NO (GE Multilin’s 50:0.025A CT w/ ratio of 2000:1)

Factory Value = NO

20–1500 (increments of 1) (Not seen if ratio is 2000:1)

Factory Value = 100

50:0.025A (2000:1 ratio) CT:

1.-10 amps or OFF (increments of 1)

Factory Value = 4

5 A secondary CT: 0.1-1.0 xCT rating or OFF (increments of

0.1) (not seen if ratio is 2000:1)

Factory Value = 0.4

3.7

3.18,3.20

3.8

3.9

3.10

3.11

3-18

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Setpoints, Pg. 1 3 SETUP AND USE

Page Line Information Line Setpoint Range and Units Manual Ref.

1 16

•

G/F ALARM TIME DELAYG/F ALARM TIME DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

GROUND FAULT TRIP LEVELGROUND FAULT TRIP LEVEL G/F TRIP = XXX AMPSG/F TRIP = XXX AMPS

GROUND FAULT TRIP LEVELGROUND FAULT TRIP LEVEL G/F TRIP = XXX xCTG/F TRIP = XXX xCT

G/F TRIP TIME DELAYG/F TRIP TIME DELAY G/F DELAY= XX.X SECONDSG/F DELAY= XX.X SECONDS

UNDERCURRENT ALARM LEVELUNDERCURRENT ALARM LEVEL U/C ALARM= XXXX AMPSU/C ALARM= XXXX AMPS

UNDERCURRENT ALARM DELAYUNDERCURRENT ALARM DELAY TIME DELAY= XXX SECONDSTIME DELAY= XXX SECONDS

UNDERCURRENT TRIP LEVELUNDERCURRENT TRIP LEVEL U/C TRIP = OFF AMPSU/C TRIP = OFF AMPS

UNDERCURRENT TRIP DELAYUNDERCURRENT TRIP DELAY TIME DELAY= XXX SECONDSTIME DELAY= XXX SECONDS

MECHANICAL JAM ALARMMECHANICAL JAM ALARM ALARM LEVEL= XXX xFLCALARM LEVEL= XXX xFLC

MECH. JAM ALARM TIMEMECH. JAM ALARM TIME DELAY = XXX.X SECONDSDELAY = XXX.X SECONDS

RAPID TRIP / MECH. JAMRAPID TRIP / MECH. JAM TRIP LEVEL= X.X x FLC TRIP LEVEL= X.X x FLC

RAPID TRIP TIME DELAYRAPID TRIP TIME DELAY DELAY= XXX.X SECONDSDELAY= XXX.X SECONDS

SHORT CIRCUIT TRIP LEVELSHORT CIRCUIT TRIP LEVEL S/C TRIP= XX x FLCS/C TRIP= XX x FLC

SHORT CIRCUIT TIME DELAYSHORT CIRCUIT TIME DELAY S/C DELAY= XX.X SECONDSS/C DELAY= XX.X SECONDS

1-255 seconds (increments of 1)

Factory Value = 10

50:0.025A (2000:1 ratio) CT:

1.0-10.0 amps or OFF

(increments of 1.0) Factory Value = 8 5 A secondary CT: 0.1-1.0% xCT rating or OFF (increments of 0.1) (not seen if ratio is 2000:1)

Factory Value = 0.8

0.0 (Instantaneous) - 20.0 seconds (increments of 0.5). Additional time delay of 0.25 seconds following 20.0.

Factory Value = 0.0

1-1000 amps or OFF (increments of 1)

Factory Value = OFF

1-255 seconds (increments of 1)

Factory Value = 10

1–1000 amps or OFF (increments of 1)

Factory Value = OFF

1–255 seconds (increments of 1)

Factory Value = 5

1.5–6.0 xFLC or OFF (increments of 0.5)

Factory Value = OFF

0.5–125.0 seconds (increments of 0.5)

Factory Value = 5.0

1.5×FLC-4.5×FLC or OFF (increments of 0.5×FLC)

Factory Value = 2.5

0.5-125.0 seconds (increments of 0.5)

Factory Value = 10.0

4×FLC-12×FLC or OFF (increments of 1×FLC)

Factory Value = OFF

Instantaneous or 0.5-20.5 seconds (increments of 0.5)

Factory Value = INST

3.11

3.12

3.13

3.14

3-19

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3 SETUP AND USE Setpoints, Pg. 1

Page Line Information Line Setpoint Range and Units Manual Ref.

1 30

IMMEDIATE OVERLOADIMMEDIATE OVERLOAD LEVEL = X.XX x FLCLEVEL = X.XX x FLC

END OF PAGE ONEEND OF PAGE ONE SETPOINT VALUESSETPOINT VALUES

1.01×FLC-1.50×FLC or OFF (increments of 0.01×FLC)

Factory Value = OFF

3.15

3-20

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Setpoints, Pg. 2 3 SETUP AND USE

Page Line Information Line Setpoint Range and Units Manual Ref.

2 1

PAGE 2: SETPOINT VALUESPAGE 2: SETPOINT VALUES RTD SETPOINTSRTD SETPOINTS

RTD SENSOR TYPERTD SENSOR TYPE TYPE = 100 OHM PLATINUMTYPE = 100 OHM PLATINUM

ARE THERE ANY RTDsARE THERE ANY RTDs CONNECTED? XXXCONNECTED? XXX

RTD MESSAGE DISPLAY = CRTD MESSAGE DISPLAY = C (C:CELSIUS/F:FAHRENHEIT)(C:CELSIUS/F:FAHRENHEIT)

# OF STATOR RTDS USED# OF STATOR RTDS USED # OF RTDs = X# OF RTDs = X

STATOR #1 ALARM LEVELSTATOR #1 ALARM LEVEL

= XXX DEGREES C= XXX DEGREES C

Not a setpoint. Displays the RTD type the relay will accept. To change the RTD type, contact the factory. 100 ohm platinum, 10 ohm copper, 100 ohm nickel, 120 ohm nickel.

YES or NO When programmed to “NO”, all RTD messages in Setpoints and Actual Values are not displayed.

Factory Value = YES

C or F

Factory Value = C

0-6 (increments of 1)

Factory Value = 6

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

3.16

RTD #1 ALARM LEVELRTD #1 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #1 TRIP LEVELSTATOR #1 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

3.16

RTD #1 TRIP LEVELRTD #1 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #2 ALARM LEVELSTATOR #2 ALARM LEVEL

= XXX DEGREES C= XXX DEGREES C

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

3.16

RTD #2 ALARM LEVELRTD #2 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #2 TRIP LEVELSTATOR #2 TRIP LEVEL

= XXX DEGREES C= XXX DEGREES C

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

3.16

RTD #2 TRIP LEVELRTD #2 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #3 ALARM LEVELSTATOR #3 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

3.16

RTD #3 ALARM LEVELRTD #3 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

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3 SETUP AND USE Setpoints, Pg. 2

Page Line Information Line Setpoint Range and Units Manual Ref.

STATOR #3 TRIP LEVELSTATOR #3 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

RTD #3 TRIP LEVELRTD #3 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #4 ALARM LEVELSTATOR #4 ALARM LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #4 ALARM LEVELRTD #4 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #4 TRIP LEVELSTATOR #4 TRIP LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #4 TRIP LEVELRTD #4 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #5 ALARM LEVELSTATOR #5 ALARM LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #5 ALARM LEVELRTD #5 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #5 TRIP LEVELSTATOR #5 TRIP LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #5 TRIP LEVELRTD #5 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #6 ALARM LEVELSTATOR #6 ALARM LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #6 ALARM LEVELRTD #6 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

STATOR #6 HIGH ALARMSTATOR #6 HIGH ALARM

LEVEL = XXX DEGREES CLEVEL = XXX DEGREES C

RTD #6 HIGH ALARMRTD #6 HIGH ALARM LEVEL = XXX DEGREES CLEVEL = XXX DEGREES C

STATOR #6 TRIP LEVELSTATOR #6 TRIP LEVEL

= XXX DEGREES C= XXX DEGREES C

RTD #6 TRIP LEVELRTD #6 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

RTD #7 ALARM LEVELRTD #7 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

Factory Value = OFF

0-200 degrees C or OFF (increments of 1) (32-392 degrees F) Factory Value = OFF

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

3.16

3.17

3-22

Page 62

Setpoints, Pg. 2 3 SETUP AND USE

Page Line Information Line Setpoint Range and Units Manual Ref.

2 20

RTD #7 TRIP LEVELRTD #7 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

RTD #8 ALARM LEVELRTD #8 ALARM LEVEL = XXX DEGREES C= XXX DEGREES C

RTD #8 TRIP LEVELRTD #8 TRIP LEVEL = XXX DEGREES C= XXX DEGREES C

END OF PAGE TWOEND OF PAGE TWO

0-200 degrees C or OFF (increments of 1) (32-392 degrees F)

3.17

SETPOINT VALUESSETPOINT VALUES

3-23

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3 SETUP AND USE Setpoints, Pg. 3

Page Line Information Line Setpoint Range and Units Manual Ref.

3 1

PAGE 3: SETPOINT VALUESPAGE 3: SETPOINT VALUES O/L CURVE SETPOINTSO/L CURVE SETPOINTS

SELECTED CURVE NUMBERSELECTED CURVE NUMBER CURVE # = XCURVE # = X

END OF PAGE THREEEND OF PAGE THREE

1-8

Factory Value = 4

SETPOINT VALUESSETPOINT VALUES

3.18

3-24

Page 64

Setpoints, Pg. 4 3 SETUP AND USE

PAGE 4: SETPOINT VALUESPAGE 4: SETPOINT VALUES RELAY CONFIGURATIONRELAY CONFIGURATION

This page is used to assign trip and alarm functions to specific output relays (ie. TRIP, ALARM, AUX. 1, AUX. 2) on the 269. Each trip/alarm function is assigned separately to the appropriate relay or to "NO" relay. If an alarm feature is assigned to no relay, it can still become active (ie. cause the appropriate alarm message to be displayed if setpoints are exceeded) but no output relay activation will occur. Possible assignments and factory values are shown below.

Note: Only one TRIP may occur at any one time. TRIP functions and inhibits must therefore be used to trip or lockout the motor. Once one TRIP or INHIBIT function is active, no other trip or inhibit may occur.

Assign XXXXXXXXXXXXXXXXAssign XXXXXXXXXXXXXXXX to XXXXXXXXXXXXXX relayto XXXXXXXXXXXXXX relay

Feature Possible Assignments Factory Value Comments O/L TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY

U/B TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY S/C TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY U/C TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY RAPID TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY

•STATOR RTD TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY

•RTD TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY

G/F TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY ACCEL. TIME TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY PHASE REVERSAL TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY METER OPTION INHIBIT LOCKOUTS TRIP or AUX. 1 or TRIP & AUX.1 AUX. 1 RELAY SINGLE PHASE TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY U/V TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY METER OPTION O/V TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY METER OPTION POWER FACTOR TRIP TRIP or AUX. 1 or TRIP & AUX.1 TRIP RELAY METER OPTION

O/L WARNING ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY G/F ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY U/B ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY U/C ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY MECH. JAM ALARM ALARM or AUX. 1 or AUX. 2 or NO AUX. 1 RELAY

•STATOR RTD ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY

•RTD ALARM ALARM or AUX. 1 or AUX. 2 or NO AUX. 1 RELAY

•NO SENSOR ALARM ALARM or AUX. 1 or AUX. 2 or NO AUX. 1 RELAY

•LOW TEMP. ALARM ALARM or AUX. 1 or AUX. 2 or NO AUX. 1 RELAY

T.C. ALARM ALARM or AUX. 1 or AUX. 2 or NO NO RELAY U/V ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY METER OPTION O/V ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY METER OPTION PF ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY METER OPTION KVAR ALARM ALARM or AUX. 1 or AUX. 2 or NO ALARM RELAY METER OPTION METER ALARM ALARM or AUX. 1 or AUX. 2 or NO AUX. 2 RELAY SELF TEST FAIL ALARM or AUX. 1 or AUX. 2 or NO AUX. 2 RELAY

• These messages are not displayed when no RTDs are connected to the 269.

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3 SETUP AND USE Setpoints, Pg. 5

PAGE 5: SETPOINT VALUESPAGE 5: SETPOINT VALUES SYSTEM CONFIGURATIONSYSTEM CONFIGURATION

This page is used to configure the 269 relay to exactly match the motor and motor system being protected. Various special features can be selected, defeated, or adjusted in this page of setpoints.

NORMAL RUN DISPLAY SHOWSNORMAL RUN DISPLAY SHOWS LINE = LINE XXLINE = LINE XX

This setpoint determines the line of the selected page in ACTUAL VALUES MODE to which the display will return if no key is pressed for more than four minutes and no trips or alarms are present:

1-40 - line number in selected page (see Table 3-2) Factory Value = 2

NORMAL RUN DISPLAY SHOWSNORMAL RUN DISPLAY SHOWS PAGE = PAGE XXPAGE = PAGE XX

This setpoint determines the page in ACTUAL VALUES mode to which the display will return if no key is pressed for more than four minutes and no trips or alarms are present:

1 - page 1 (see Table 3-2) 2 - page 2 3 - page 3 4 - page 4 5 - page 5 6 - page 6

Factory Value = 1

4 •

DEFEAT NO SENSOR ALARM?DEFEAT NO SENSOR ALARM? XXX XXX

This setpoint is used to enable or defeat the Broken RTD Sensor Alarm. This alarm will only become active for open circuit RTDs chosen for use:

YES - RTD Broken Sensor Alarm defeated. NO - RTD Broken Sensor Alarm enabled.

Factory Value = YES

5 •

ENABLE LOW TEMPERATUREENABLE LOW TEMPERATURE ALARM? XXXALARM? XXX

This setpoint is used to enable or defeat the RTD LOW TEMP. ALARM. This alarm will only become active for RTD’s measuring 0°C (32°F) (see section 3.16–3.17).

YES - RTD Low Temperature Alarm enabled NO - RTD Low Temperature Alarm disabled.

Factory Value = NO

• Messages are not displayed if the answer to the question “ARE THERE ANY RTDs CONNECTED” is “NO”. This setpoint is located on page 2 of setpoints, line 3.

3-26

Page 66

Setpoints, Pg. 5 3 SETUP AND USE

[

]

6 •

ENABLE STATOR RTD VOTINGENABLE STATOR RTD VOTING (2 RTDs>=TRIP)? XXX(2 RTDs>=TRIP)? XXX

This setpoint is used to enable or defeat the stator RTD voting feature. If enabled, any one Stator RTD alone will not trip the motor even when it exceeds its trip setpoint. A minimum of two stator RTDs will have to exceed both their individual trip setpoints before a trip signal is issued by the 269. The second stator RTD encountered that is above its trip setpoint will be the cause of the trip. In addition, a reset of a stator RTD trip will not be allowed unless both stator RTD temperatures are below their respective setpoints. Stator RTD Alarms are not affected by this feature. Stator RTD Alarms will still be issued based on individual RTD temperatures.

If the number of stator RTDs is programmed to 1, then no stator RTD voting takes place. YES - RTD Voting enabled

NO - RTD Voting disabled Factory Value = YES

7 •

DEFEAT RTD INPUT TODEFEAT RTD INPUT TO THERMAL MEMORY ? XXXTHERMAL MEMORY ? XXX

This setpoint is used to enable or defeat the thermal memory RTD bias feature of the relay (see section

3.20). With this feature defeated, the effect of the stator RTD temperature is not included in the thermal memory:

YES - RTD bias defeated (RTD temperature does not affect thermal memory) NO - RTD bias enabled (thermal memory affected as per section 3.20).

Factory Value = YES

8 *

RTD BIAS CURVE MINIMUMRTD BIAS CURVE MINIMUM VALUE = XXX CVALUE = XXX C

(Not seen when RTD input to thermal memory is defeated. )

(See section 3.16) This setpoint is used to set the RTD bias minimum value (see Figure 3.4):

This setpoint is typically programmed as the ambient temperature. Limits: 0°C to (RTD Bias Center Temp – 1) in degrees C or F Factory Value = 40

9 *

RTD BIAS CENTER T.C.RTD BIAS CENTER T.C. VALUE = XX PERCENTVALUE = XX PERCENT

(Not seen when RTD input to thermal memory is defeated)

This is the thermal capacity value for the center point of the two part curve. This level may be set as the percentage difference of the hot motor thermal damage curve to the cold motor thermal damage curve.

Center T.C. =

Limits: 1–99% Factory Value = 15

• Messages are not displayed if the answer to the question “ARE THERE ANY RTDs CONNECTED” is “NO”. This setpoint is located on page 2 of setpoints, line 3.

* Messages are not displayed when “RTD INPUT TO THERMAL MEMORY” (setpoints page 5, line 7) is defeated.

Hot motor stall time

1 100− ×

Cold motor stall time

3-27

Page 67

3 SETUP AND USE Setpoints, Pg. 5

10*

RTD BIAS CENTER TEMP.RTD BIAS CENTER TEMP. VALUE = XXX CVALUE = XXX C

(Not seen when RTD input to thermal memory is defeated)

(See section 3.16) This is the temperature value for the center point of the two part curve. Limits: (RTD Bias Min Temp + 1) to (RTD Bias Max Temp – 1) in degrees C or F Factory Value = 110

11*

RTD BIAS CURVE MAXIMUMRTD BIAS CURVE MAXIMUM VALUE = XXX CVALUE = XXX C

(Not seen when RTD input to thermal memory is defeated.)

This setpoint is used to set the RTD bias maximum value (see Figure 3.4): Limits: (RTD Bias Center Temp + 1) to 200°C (392°F) Factory Value = 155

DEFEAT U/B INPUT TODEFEAT U/B INPUT TO THERMAL MEMORY ? XXXTHERMAL MEMORY ? XXX

This code is used to defeat or enable the unbalance bias function. With this feature defeated the effect of negative sequence unbalance is not included in the thermal memory:

YES - Unbalance bias defeated, thermal memory affected by average of three phase currents. NO - Unbalance bias enabled, thermal memory affected by equivalent motor heating current (including negative sequence contribution).

Note: Ensure that the proper value for the K factor is programmed in the following setpoint. The K factor is used to bias the thermal memory as explained in section 3.20.

Factory Value = YES

13•

DEFAULT K VALUE = XXDEFAULT K VALUE = XX

This setpoint is used to select a value for the negative sequence unbalance K factor (see section 3.20):

K =

175

; ILR is the locked rotor current value in per unit; ILR =

I (Amps)

FLC

1-19 (increments of 1) Factory Value = 6

* Messages are not displayed when “RTD INPUT TO THERMAL MEMORY” (setpoints page 5, line 7) is defeated.

• Message is not displayed when “DEFEAT U/B INPUT TO THERMAL MEMORY” is set to “Yes”.

3-28

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Setpoints, Pg. 5 3 SETUP AND USE

ENTER RUNNINGENTER RUNNING COOL TIME = XXX MINUTESCOOL TIME = XXX MINUTES

This setpoint represents the time for the thermal memory to discharge from 100% to 0% with the motor running in a non-overload condition:

1-45 - cooling time in minutes Factory Value = 15

ENTER STOPPEDENTER STOPPED COOL TIME = XXX MINUTESCOOL TIME = XXX MINUTES

This value represents the time for the thermal memory to discharge from 100% to 0% with the motor stopped. The OVERLOAD TRIP lockout time is 85% of this value (see section 3.20).

5-213 - cooling time in minutes Factory Value = 30

16•

RTD 8 AMBIENT SENSOR ?RTD 8 AMBIENT SENSOR ? XXX XXX

This setpoint is used to select one of the bearing RTDs, RTD8, as an ambient air temperature sensor. See section 3.20.

YES - Indicated RTD will be used for ambient air temperature measurement NO - Indicated RTD will be used for other (non-stator) temperature measurement

Factory Value = NO

ANALOG OUTPUT PARAMETERANALOG OUTPUT PARAMETER = XXXXXXXXXXXXXX = XXXXXXXXXXXXXX

This setpoint is used to select the analog current output function. Motor Load - Motor current as a percentage of full load

Thermal Memory - Motor thermal capacity used

• Max Stator RTD - Hottest stator RTD temperature (0-200°C)

• RTD #7 - RTD #7 temperature (0-200°C). Bearing RTD.

CT secondary - CT secondary current as a percentage of CT secondary amps rating Factory Value = Max Stator RTD

ANALOG OUTPUT TYPEANALOG OUTPUT TYPE TYPE = X-XX mATYPE = X-XX mA

This setpoint is used to select the analog output range. Possible ranges: "4-20 mA"

"0-20 mA" "0-1 mA"

Factory Value = "4-20 mA"

• Messages are not displayed if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “NO”. This setpoint is located on page 2 of setpoints, line 3.

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3 SETUP AND USE Setpoints, Pg. 5

MOTOR LOAD ANALOG OUTPUTMOTOR LOAD ANALOG OUTPUT FULL SCALE = XXX %FLCFULL SCALE = XXX %FLC

This setpoint is used when the “Analog Output Parameter” setpoint is set to “MOTOR LOAD”. Motor load as a percent of full scale can then be represented by the analog output signal.

25% – 250%, in increments of 1%. Factory Value = 100%.

RELAY ALARMRELAY ALARM LATCHCODE = XXLATCHCODE = XX

This setpoint allows the choice of output relay latch attributes. A latched output relay must be manually reset. An unlatched relay will be automatically reset when the condition that caused the relay activation goes away.

Note: Trip functions must always be manually reset regardless of the Latchcode value chosen here. This setpoint allows Alarm functions to be either manually or automatically reset. The Immediate

O/L Alarm function will always be automatically reset regardless of the Latchcode. latched = manual reset, unlatched = automatic reset

Value Trip Alarm Aux. 1 Aux. 2 1 latched unlatched unlatched latched

2 or 3 latched latched unlatched latched 4 or 5 latched unlatched latched latched 6 or 7 latched latched latched latched

Factory Value = 1

DRAWOUT FAILSAFE ACCESSDRAWOUT FAILSAFE ACCESS CODE = 0 (See manual)CODE = 0 (See manual)

This setpoint appears only if the 269 is a drawout.

NOTE: FOR PROPER OPERATION OF A DRAWOUT UNIT, HARDWARE CHANGES MAY BE REQUIRED IF THE FAILSAFE CODE IS CHANGED. (CONTACT FACTORY)

Entering value from factory for this setpoint allows access of the failsafe codes for approximately 3 minutes.

Factory Value = 0

• Messages are not displayed if the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “NO”. This setpoint is located on page 2 of setpoints, line 3.

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Setpoints, Pg. 5 3 SETUP AND USE

RELAY FAILSAFERELAY FAILSAFE CODE = XCODE = X

(message does not appear on Drawout versions of 269 unless proper code is entered for the previous setpoints)

This code allows the choice of output relay fail-safe attributes. FS = fail-safe, NFS = non-fail-safe (see Glossary).

Value Trip Alarm Aux. 1 Aux. 2 1 FS NFS NFS FS (see Figure 2.5)

2 NFS FS NFS FS 3 FS FS NFS FS 4 NFS NFS FS FS 5 FS NFS FS FS 6 NFS FS FS FS 7 FS FS FS FS 8 NFS NFS NFS FS

Factory Value = 1

Note: Due to the hardware configuration of the 269 drawout relay this code cannot be changed on any drawout models without corresponding hardware change.

WARNING: In locations where system voltage disturbances cause voltage levels to dip below the range specified in specifications (1.5), any relay contact programmed failsafe may change state. Therefore, in any application where the "process" is more critical than the motor, it is recommended that the trip relay contacts be programmed non-failsafe. In this case, it is also recommended that the AUX2 contacts be monitored for relay failure. If, however, the motor is more critical than the "process" then the trip contacts should be programmed failsafe. See Figure 3.2 and Figure 3.3

SPARE INPUT TO READSPARE INPUT TO READ 52B CONTACT? XXX52B CONTACT? XXX

This setpoint is designed to read the 52B contact of a breaker or equivalent normally closed auxiliary contact of a contactor to determine a motor "stop" condition.

For proper operation of the 269, it is required that a 52B contact be wired to terminals 44 and 45 and this setpoint programmed to “YES”. Only if the spare input terminals are to be used for trip or alarm purposes (see next two setpoints), should this setpoint be programmed to “NO”.

Programming this setpoint to “NO” results in the 269 detecting a motor stop condition when current drops below 5% of CT. This may result in nuisance lockouts being initiated by the 269 if the motor (synchronous or induction) is running unloaded or idling, and if the starts/hour, time between starts or backspin timer are programmed.

YES - Enables the spare input to read the 52B contact. NO - Disables the spare input from reading a 52B contact.

Factory Value = NO

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3 SETUP AND USE Setpoints, Pg. 5

[

]

TIME BETWEEN STARTSTIME BETWEEN STARTS TIME DELAY = XXX MINTIME DELAY = XXX MIN

This setpoint is used to inhibit the current start attempt if the time specified has not elapsed since the most recent start.

1-254 (increments of 1) or OFF - time delay in minutes (OFF disables this function) Factory Value = OFF

FLC THERMAL CAPACITYFLC THERMAL CAPACITY REDUCTION = XX PERCENTREDUCTION = XX PERCENT

This setpoint is used to program the level which the thermal memory will discharge to when the motor is running at full load current. This level may be set as the percentage difference of the hot motor thermal damage curve to the cold motor thermal damage curve. See section 3.20.

TCR =

Range: 0% - 90% increments of 1% (0 disables this feature) Factory Value = 15%

THERMAL CAPACITY USEDTHERMAL CAPACITY USED

(Hot motor stall time)

1 100− ×

(Cold motor stall time)

ALARM LEVEL = XXX% ALARM LEVEL = XXX%

This setpoint is used to set the level to which the thermal capacity will be compared. If the thermal capacity equals or exceeds this setpoint for the specified time delay, an alarm will occur (see section 3.19).

Range: 1% - 100% increments of 1%, or OFF Factory Value = OFF

THERMAL CAPACITY USEDTHERMAL CAPACITY USED TIME DELAY = XXX SEC TIME DELAY = XXX SEC

This setpoint is used to set the time delay for operation of the Thermal Capacity Alarm function. Range: 1 - 255 sec (increments of 1) Factory Value = 5

END OF PAGE FIVEEND OF PAGE FIVE SETPOINT VALUESSETPOINT VALUES

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Setpoints, Pg. 6 3 SETUP AND USE

PAGE 6: SETPOINT VALUESPAGE 6: SETPOINT VALUES GE MULTILIN SERVICE CODESGE MULTILIN SERVICE CODES

This page is used for 269 relay testing both in the field and at the GE Multilin factory. The first five lines of this page are available to the user for testing the relay once it is installed. The other lines in this page are only accessible to GE Multilin service personnel by entering an access code.

PLACE 269 INPLACE 269 IN TEST MODE? XXXTEST MODE? XXX

All statistical values in Actual Values page 4 and all learned parameters in Actual Values page 6 are not updated when this setpoint is set to “YES”; i.e. as long as the 269 remains in test mode. Normal updating of these Actual Values resumes once the 269 is placed in normal running mode by changing this setpoint to “NO”.

YES - Places 269 in test mode NO - Places 269 in normal running mode

Factory Value = NO

EXERCISE RELAY :EXERCISE RELAY : XXXXXX XXXXXX

This line is used to test the operation of the 269 output relay contacts and to test any connected switchgear. This can only be done when the motor is stopped and not tripped. With the access terminals shorted, pressing the VALUE UP or VALUE DOWN keys, followed by the STORE key, will cause different output relays to change state:

NO - No output relays activated TRIP - Trip relay activated ALARM - Alarm relay activated AUX.1 - Aux. 1 relay activated AUX.2 - Aux. 2 relay activated ALL - All output relays activated

4 •

TEMPERATURE= XXX C FORTEMPERATURE= XXX C FOR FORCED RTD # XFORCED RTD # X

This line is used to force the 269 relay to read a single RTD. The RTD number is chosen by pressing the VALUE UP or VALUE DOWN keys.

1-8 - RTD number to be read continuously

ANALOG OUT FORCEDANALOG OUT FORCED TO: XXXXXX SCALETO: XXXXXX SCALE

This line is used to force the analog current output of the 269 relay to a certain value to test the relay and any associated meters.

NORMAL - Analog current output left unchanged ZERO - Analog current output forced to zero MID - Analog current output forced to the middle of the scale FULL - Analog current output forced to a full scale output

• Messages are not displayed if the answer to the question “ARE THERE ANY RTDs CONNECTED” is “NO”. This setpoint is located on page 2 of setpoints, line 3.

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3 SETUP AND USE Setpoints, Pg. 6

STATUS = XXXXXXSTATUS = XXXXXX FOR: XXXXXXXXXXXX SWITCHFOR: XXXXXXXXXXXX SWITCH

This line can be used to check the status (either OPEN or SHORT) of any of the following terminals: EXT.RESET, EMG.RESTART, ACCESS, SPEED, DIFF., or SPARE

SOFTWARE ACCESS = OFFSOFTWARE ACCESS = OFF ACCESS STATUS: ENABLEDACCESS STATUS: ENABLED

This line will display the access status as ENABLED or DISABLED, reflecting whether setpoints may be stored or not. Storing a value of OFF for “Software Access” defeats the software access feature. Access is then strictly a function of the access jumper. Once the status reflects ENABLED, a value may be stored for “Software Access”. This value (1–500) will activate the software access feature. The value stored will remain on the screen until the user moves to a new line, presses the CLEAR button, or access becomes disabled. The display of the Software Access code will then revert to “0” so that the code cannot be viewed (a value of “0” may never be stored for this setpoint). The Access Status will remain enabled for approximately 4 minutes after the last key is pressed, or until the access jumper is removed. To enable access again, the user must ensure the access jumper is installed and then store his software access code.

0–500, in increments of 1, or OFF (A value of OFF disables the Software Access feature. A value of “0”

indicates that the feature is enabled).

Factory Value = OFF.

SERVICE USE ONLYSERVICE USE ONLY CODE = XXCODE = XX

This line is used by GE Multilin service personnel for calibration and service to the 269 relay.

CAN.SERVICE: 905-294-6222CAN.SERVICE: 905-294-6222 http://www.ge.com/edc/pmhttp://www.ge.com/edc/pm

Canadian service phone number and web site address.

ENCRYPTED SECURITYENCRYPTED SECURITY ACCESS CODE = XXXACCESS CODE = XXX

In the event that the user should forget or lose his Software Access code, the value displayed on this line may be used by a GE Multilin Service person to decipher and notify the user of his Software Access code.

MULTILIN 269 RELAYMULTILIN 269 RELAY REVISION 269.XX.XREVISION 269.XX.X

This is the 269 relay firmware revision identifier line.

269 SERIAL NUMBER269 SERIAL NUMBER SERIAL #: D20 X XXXXSERIAL #: D20 X XXXX

This is the 269 relay serial number identifier, where:

D: Hardware revision

20: Product code

X: Last digit of production year

XXXX: Four digit serial number

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Setpoints, Pg. 6 3 SETUP AND USE

END OF PAGE SIXEND OF PAGE SIX SETPOINT VALUESSETPOINT VALUES

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3 SETUP AND USE Setpoints, Pg. 7

PAGE 7: SETPOINT VALUESPAGE 7: SETPOINT VALUES METERING SETPOINTSMETERING SETPOINTS

This page is used to enable the 269 to display and/or trip and alarm on voltage or power values received from a GE Multilin meter (MPM).

METERING SETPOINTS SETMETERING SETPOINTS SET AND METER ON LINE? XXXAND METER ON LINE? XXX

This setpoint is used to enable 269 communication with a GE Multilin meter. NOTE: CT and VT ratio must be programmed before "YES" is entered for this setpoint. YES - 269 initiates communication and enables all page 7 setpoints as programmed.

NO - 269 no longer communicates with the meter and all page 7 setpoints are disabled. Factory Value = NO

METER MODULEMETER MODULE NOT INSTALLEDNOT INSTALLED

This message is shown when the answer to the question in the above setpoint is “NO”; i.e. the meter is not online.

METER PHASE CTMETER PHASE CT PRIMARY = XXX AMPSPRIMARY = XXX AMPS

Enter the phase CT primary value of the current transformers connected to the meter. NOTE: Failure to enter a correct value for CT primary will result in incorrect values from the meter. 20-1500 (increments of 1) Factory Value = 100

PHASE VT RATIOPHASE VT RATIO VT RATIO = XXX:1VT RATIO = XXX:1

Enter the phase VT ratio of the voltage transformers connected to the meter. VT ratio = VT primary / VT secondary (round to one decimal place).

NOTE: Failure to enter a correct value for VT ratio will result in incorrect values from the meter. 1-255 in steps of 1 Factory Value = 1

METER PHASE VT SECONDARYMETER PHASE VT SECONDARY VT SECONDARY = XXX VOLTVT SECONDARY = XXX VOLT

Enter the VT secondary of the voltage transformer connected between the system and the meter. All under and overvoltage protection is expressed as a percent of this setpoint.

40–240 (increments of 1)

3-36

Factory Value = 120

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Setpoints, Pg. 7 3 SETUP AND USE

ENABLE U/V TRIP & ALARMENABLE U/V TRIP & ALARM IF AVG. VOLTS=0? XXXIF AVG. VOLTS=0? XXX

This setpoint should be used if an undervoltage alarm or trip is desired on a dead bus, i.e. when the average voltage of all three phases is zero.

YES - Enables undervoltage trip & alarm features if the average voltage received from the meter is zero.

Reset of an U/V trip or alarm is only possible if the average voltage goes above the setpoints.

NO - If the bus is de-energized (or dead), the 269 will not issue an undervoltage trip or alarm. In fact, if

an undervoltage trip or alarm condition existed prior to the average voltage becoming zero, these conditions may be reset after the average voltage becomes zero.

UNDERVOLTAGE ALARM LEVELUNDERVOLTAGE ALARM LEVEL U/V ALARM = XX %VTU/V ALARM = XX %VT

This setpoint sets the threshold for the undervoltage alarm condition as a percentage of VT primary. The alarm level programmed in this setpoint is compared to the average voltage received from the meter.

NOTE: To detect an undervoltage alarm upon complete loss of all three phases, the setpoint "Enable U/V Trip & Alarm if Avg. Volts=0?" must be set to Yes.

30-95 % (increments of 1) or OFF Factory Value = OFF

U/V ALARM TIME DELAYU/V ALARM TIME DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

This setpoint sets the time that an undervoltage alarm condition must persist in order to facilitate an alarm.

1-255 seconds (increments of 1) Factory Value = 10

UNDERVOLTAGE TRIP LEVELUNDERVOLTAGE TRIP LEVEL U/V TRIP = XX %VTU/V TRIP = XX %VT

This setpoint sets the threshold for the undervoltage trip condition as a percentage of VT primary. The alarm level programmed in this setpoint is compared to the average voltage received from the meter.

NOTE: To detect an undervoltage trip upon complete loss of all three phases, the setpoint "Enable U/V Trip & Alarm if Avg. Volts=0?" must be set to Yes.

30-95 % (increments of 1) or OFF Factory Value = OFF

U/V TRIP TIME DELAYU/V TRIP TIME DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

This setpoint sets the time that an undervoltage trip condition must persist in order to facilitate a trip. 1-255 seconds (increments of 1) Factory Value = 5

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3 SETUP AND USE Setpoints, Pg. 7

OVERVOLTAGE ALARM LEVELOVERVOLTAGE ALARM LEVEL O/V ALARM = XXX %VTO/V ALARM = XXX %VT

This setpoint sets the threshold for the overvoltage alarm condition as a percentage of VT primary. The alarm level programmed in this setpoint is compared to the average voltage received from the meter.

101–115% (increments of 1) or OFF. Factory Value = OFF.

OVERVOLTAGE ALARM TIMEOVERVOLTAGE ALARM TIME DELAY = XXX SECDELAY = XXX SEC

This setpoint sets the time that an overvoltage alarm condition must persist in order to facilitate an alarm. The alarm level programmed in this setpoint is compared to the average voltage received from the meter.

1-255 seconds (increments of 1) Factory Value = 10

OVERVOLTAGE TRIP LEVELOVERVOLTAGE TRIP LEVEL O/V TRIP = XX %VTO/V TRIP = XX %VT

This setpoint sets the threshold for the overvoltage trip condition as a percentage of VT primary. The trip level programmed in this setpoint is compared to the average voltage received from the meter.

101–115 % (increments of 1) or OFF Factory Value = OFF

O/V TRIP TIME DELAYO/V TRIP TIME DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

This setpoint sets the time that an overvoltage trip condition must persist in order to facilitate a trip. 1-255 seconds (increments of 1) Factory Value = 5

BLOCK PF PROTECTIONBLOCK PF PROTECTION ON START? XXXON START? XXX

When programmed to “YES”, the “PF PROTECTION DELAY” setpoint is not shown. Instead, the “BLOCK PF ALARM & TRIP ON START” setpoint is shown.

YES - “BLOCK PF ALARM & TRIP ON START BY” is shown and may be enabled; “PF PROTECTION NO - “BLOCK PF ALARM & TRIP ON START BY” is not shown; “PF PROTECTION DELAY” is shown

and may be enabled.

3-38

Factory Value = NO

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Setpoints, Pg. 7 3 SETUP AND USE

BLOCK PF ALARM & TRIPBLOCK PF ALARM & TRIP ON START BY: XXX SECONDSON START BY: XXX SECONDS

When enabled, Power Factor alarm and trip protection are blocked from the time the motor starts until the time delay programmed expires.

1–254 seconds (increments of 1) or OFF (OFF disables this function)

PF PROTECTION DELAYPF PROTECTION DELAY TIME DELAY = XXX SECTIME DELAY = XXX SEC

When enabled, after a successful start, the Power Factor must come within range of the Power Factor lead/lag trip levels for the specified period of time before the Power Factor trip and alarm features become active.

1-254 seconds (increments of 1) or OFF (OFF disables this function) Factory Value = OFF

POWER FACTOR LEADPOWER FACTOR LEAD ALARM LEVEL = X.XXALARM LEVEL = X.XX

This setpoint is used to set the power factor "lead" alarm threshold level for a power factor alarm condition.

0.05-0.99 (increments of 0.01) or OFF Factory Value = OFF

POWER FACTOR LAGPOWER FACTOR LAG ALARM LEVEL = X.XXALARM LEVEL = X.XX

This setpoint is used to set the power factor "lag" alarm threshold level for a power factor alarm condition.

0.05-0.99 (increments of 0.01) or OFF Factory Value = OFF

POWER FACTOR ALARMPOWER FACTOR ALARM TIME DELAY = XXXTIME DELAY = XXX

This setpoint is used to set the time delay that a power factor alarm condition must persist for in order to facilitate an alarm.

1-255 seconds (increments of 1) Factory Value = 10

POWER FACTOR LEADPOWER FACTOR LEAD TRIP LEVEL = X.XXTRIP LEVEL = X.XX

This setpoint is used to set the power factor "lead" trip threshold level for a power factor trip condition.

0.05-0.99 (increments of 1) or OFF Factory Value = OFF

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3 SETUP AND USE Setpoints, Pg. 7

POWER FACTOR LAGPOWER FACTOR LAG TRIP LEVEL = X.XXTRIP LEVEL = X.XX

This setpoint is used to set the power factor "lag" trip threshold level for a power factor trip condition.

0.05-0.99 (increments of 0.01) or OFF Factory Value = OFF

POWER FACTOR TRIPPOWER FACTOR TRIP TIME DELAY = XXXTIME DELAY = XXX

This setpoint is used to set the time delay that a power factor trip condition must persist for in order to facilitate a trip.

1-255 seconds (increments of 1) Factory Value = 5

POSITIVE KVAR ALARMPOSITIVE KVAR ALARM LEVEL = +XXXXX KVARSLEVEL = +XXXXX KVARS

This setpoint is used to set the positive kvar limit threshold for a kvar alarm condition. 100-25000 (increments of 100) or OFF Factory Value = OFF

NEGATIVE KVAR ALARMNEGATIVE KVAR ALARM LEVEL = -XXXXX KVARSLEVEL = -XXXXX KVARS

This setpoint is used to set the negative kvar limit threshold for a kvar alarm condition. 100-25000 (increments of 100) or OFF Factory Value = OFF

KVAR ALARMKVAR ALARM TIME DELAY = XXX SECTIME DELAY = XXX SEC

This setpoint is used to set the time that a KVAR alarm condition must persist for in order to facilitate an alarm.

1-255 seconds (increments of 1) Factory Value = 5

ENABLE VOLTAGE PHASEENABLE VOLTAGE PHASE REVERSAL? XXXREVERSAL? XXX

This setpoint is used to enable or disable the phase reversal trip feature as detected from the meter monitoring the line voltages.

3-40

YES - enable voltage phase reversal NO - disable voltage phase reversal

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Setpoints, Pg. 7 3 SETUP AND USE

ANALOG OUT SCALE FACTORANALOG OUT SCALE FACTOR 100KWxXXX 30KVARxXXX100KWxXXX 30KVARxXXX

This setpoint is used to set the full scale value for the meter’s analog output (KWATTS and KVARS). 1-255 (increments of 1) Factory Value = 1

END OF PAGE SEVENEND OF PAGE SEVEN SETPOINT VALUESSETPOINT VALUES

3.5 HELP Mode

This display mode should be used whenever help is required in using the 269 relay. The HELP key can provide the user with information on the proper function and use of each key on the keypad or can provide information about the currently displayed ACTUAL VALUES, SETPOINTS, or TRIP/ALARM message. Pressing the HELP key has no effect when a flash message or HELP message is on the display.

If the HELP key is pressed with the first line of a page (ie. a page header) on the display the following message will appear:

Press KEY of interest orPress KEY of interest or HELP again for detailsHELP again for details

The user should then press the key for which instruction is required or press the HELP key again to access information on the previously displayed ACTUAL VALUES, SETPOINTS, or TRIP/ALARM message. When the desired key is pressed the display will show the message:

Press LINE DOWN forPress LINE DOWN for info or CLEAR to exitinfo or CLEAR to exit

The LINE DOWN key can then be used to display the requested HELP message.

If the HELP key is pressed with any line that is not a page header on the display the HELP message shown will be for the previously displayed ACTUAL VALUES, SETPOINTS, or TRIP/ALARM message.

Pressing the CLEAR key at any time during the HELP message will return the display to the page and line of the mode in effect when the HELP key was originally pressed. The ACTUAL VALUES and SET POINTS keys may also be pressed to exit HELP mode.

3.6 TRIP/ALARM Mode

TRIP/ALARM mode can only be entered when an actual motor value exceeds a setpoint value or an alarm becomes active. Every trip and alarm condition has a separate message so that the exact nature of the problem can be easily identified.

TRIP/ALARM mode will be entered whenever a setpoint is exceeded or an alarm condition arises regardless of whether an output relay activation occurs. For example, if the "STATOR RTD ALARM LEVEL" setpoint is exceeded, but this function is assigned to "NO" output relay, the 269 will enter TRIP/ALARM mode but no output relay activation will occur.

To leave TRIP/ALARM mode the ACTUAL VALUES, SET POINTS, or HELP keys can be pressed. Doing this will not change the state of the output relays but will allow the user to access other motor and relay information to determine the cause of the trip. The active TRIP/ALARM messages are found in ACTUAL VALUES mode, page 5, immediately in front of the pre-trip motor data. If any trip/alarm function is active and no key is pressed for a time of 20 seconds, the 269 relay display will return to the appropriate TRIP/ALARM message.

Only one type of relay trip can occur at any one time. However, a trip and an alarm or multiple alarms can occur at the same time. If this is the case the 269 relay display will show the TRIP/ALARM message for the trip or alarm with the highest priority. Any other active messages can be examined by using the LINE DOWN key. The complete set of TRIP/ALARM messages is shown in Table 3-4 together with a description of the conditions causing the relay to enter TRIP/ALARM mode. The messages are shown in order of display priority.

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

NOTE: Only one TRIP function or inhibit can occur at any one time. TRIP functions must therefore be used to trip out the motor. Once one TRIP function or Inhibit is active no other TRIPs can occur. If multiple ALARMs occur, the other ALARM messages may be viewed by pressing the LINE DOWN key.

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

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3 SETUP AND USE

Table 3-4 TRIP/ALARM Messages and Fault Diagnosis

Pri. Information Line Explanation Suggestions Manual

Ref.

3.13

3.10

SELF-TEST ALARMSELF-TEST ALARM A/D H/W FAILA/D H/W FAIL

SELF-TEST ALARMSELF-TEST ALARM RTD H/W FAIL. RTDs OFFRTD H/W FAIL. RTDs OFF

SELF-TEST ALARMSELF-TEST ALARM RAM FAILRAM FAIL

SELF-TEST ALARM FACTORYSELF-TEST ALARM FACTORY SETPOINTS LOADEDSETPOINTS LOADED

PHASE S/C TRIPPHASE S/C TRIP

RAPID TRIPRAPID TRIP

SINGLE PHASE TRIPSINGLE PHASE TRIP

Problem in A/D circuit detected by internal self-test. Service required.

Problem in RTD circuit detected by internal self-test. Service required. Number of stator RTDs is set to zero, and all RTD setpoints are set to “OFF”.

Problem in RAM detected by internal self-test. Service required.

Problem in NOVRAM detected by internal self-test. Service required.

Short Circuit Trip Level exceeded for a time greater than the Short Circuit Time Delay.

Rapid trip / Mech. Jam Trip Level exceeded for a time greater than the Rapid Trip Time Delay.

Unbalance of over 30% present for a time greater than 4 seconds.

- Return relay for service. 3.23

- Return relay for service.

- Check for motor winding shorts. 3.14

- Check system for jams / excessive load.

- Check continuity of incoming three phase supply.

GROUND FAULT TRIPGROUND FAULT TRIP

OVERLOAD TRIP OVERLOAD TRIP LOCKOUT TIME = XXX MIN.LOCKOUT TIME = XXX MIN.

STARTS/HOURSTARTS/HOUR LOCKOUT TIME = XXX MIN.LOCKOUT TIME = XXX MIN.

TIME BETWEEN STARTSTIME BETWEEN STARTS LOCKOUT TIME = XXX MINLOCKOUT TIME = XXX MIN

UNBALANCE TRIPUNBALANCE TRIP

STATOR RTD TRIPSTATOR RTD TRIP RTD # X = XXX CRTD # X = XXX C

RTD TRIP RTD TRIP RTD # X = XXX CRTD # X = XXX C

13••

14••

ACCEL. TIME TRIPACCEL. TIME TRIP

PHASE REVERSAL TRIPPHASE REVERSAL TRIP

UNDERVOLTAGE TRIPUNDERVOLTAGE TRIP

Ground Fault Trip Level exceeded for a time greater than the Ground Fault Trip Time Delay.

Motor thermal capacity exceeded. Motor lock-out time is also shown.

Total number of motor starts over the past hour greater than Number of Starts per Hour setpoint.

Time elapsed since the last start has not exceeded Time Between Starts setpoint.

Unbalance Trip Level exceeded for a time greater than the Unbalance Trip Time Delay (all phases > 0.1 × FLC).

Stator RTD Trip Level temperature exceeded on at least one stator RTD.

RTD Trip Level temperature exceeded.

Motor did not enter a normal running state (ie. phase current < FLC) within Acceleration Time setpoint.

Phases not connected to motor in proper sequence.

Low incoming voltage from substation.

- Check for motor winding to case or ground shorts.

- Check motor for moisture or conductive particles.

- Excessive load with motor running or locked rotor on start.

- Wait for motor to cool.

- Reduce number of starts during normal motor operation.

- Wait until Inhibit expires.

- Check incoming supply phases for unbalance.

- Check for motor winding shorts.

- Increase Trip Level if required.

- Check motor ventilation and ambient temperature.

- Allow motor to cool.

- Excessive load or locked rotor on start.

- Check incoming phase sequence and VT polarity.

- Adjust transformer tap changer.

3.11

3.18

3.9

3.10

3.16

3.17

3.8

3.19

15••

3-42

OVERVOLTAGE TRIPOVERVOLTAGE TRIP

UNDERCURRENT TRIPUNDERCURRENT TRIP

High incoming voltage from substation.

Phase current less than U/C Trip setpoint for a time period greater than the U/C trip time delay.

- Adjust transformer tap changer.

- Check system for loss of load. 3.12

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3 SETUP AND USE

Pri. Information Line Explanation Suggestions Manual

Ref.

17••

POWER FACTOR TRIPPOWER FACTOR TRIP

Fault in excitation control system. - Check excitation.

OVERLOAD WARNING OVERLOAD WARNING TIME TO TRIP = XXXXXTIME TO TRIP = XXXXX

GROUND FAULT ALARM GROUND FAULT ALARM G/F = XX PERCENTG/F = XX PERCENT

UNBALANCE ALARM UNBALANCE ALARM U/B = XX PERCENTU/B = XX PERCENT

UNDERCURRENT ALARM UNDERCURRENT ALARM I(3 ph avg) = XXXX A RMSI(3 ph avg) = XXXX A RMS

MECHANICAL JAM ALARM MECHANICAL JAM ALARM I(3 ph avg) = XXX AMPSI(3 ph avg) = XXX AMPS

STATOR RTD ALARMSTATOR RTD ALARM RTD # XX = XXX CRTD # XX = XXX C

RTD ALARM RTD ALARM RTD # XX = XXX CRTD # XX = XXX C

STATOR RTD HIGH ALARM STATOR RTD HIGH ALARM RTD # XX = XXX CRTD # XX = XXX C

RTD HIGH ALARM RTD HIGH ALARM RTD # XX = XXX CRTD # XX = XXX C

BROKEN RTD LINEBROKEN RTD LINE see RTD ACTUAL VALUESsee RTD ACTUAL VALUES

LOW TEMPERATURE ALARMLOW TEMPERATURE ALARM RTD # XXRTD # XX

THERMAL CAPACITY ALARMTHERMAL CAPACITY ALARM USED = XXX PERCENTUSED = XXX PERCENT

30••

UNDERVOLTAGE ALARM UNDERVOLTAGE ALARM V(3 ph avg) = XXXXXV(3 ph avg) = XXXXX

31••

OVERVOLTAGE ALARM OVERVOLTAGE ALARM V(3 ph avg) = XXXXXV(3 ph avg) = XXXXX

32••

POWER FACTOR ALARMPOWER FACTOR ALARM PF = XX.XX LAGPF = XX.XX LAG

33••

KVAR LIMIT ALARMKVAR LIMIT ALARM KVAR = +XXXXXKVAR = +XXXXX

34••

METER FAILURE METER FAILURE (COMMUNICATION HARDWARE)(COMMUNICATION HARDWARE)

35••

METER FAILURE METER FAILURE (INCOMPATIBLE REVISIONS)(INCOMPATIBLE REVISIONS)

Phase current greater than Immediate O/L Level setpoint.

Ground Fault Alarm Level exceeded for a time greater than the Ground Fault Time Delay.

Unbalance Alarm Level exceeded for a time greater than the Unbalance Time Delay.

Phase current less than Undercurrent Alarm Level for a time greater than the Undercurrent Alarm Time Delay. Phase current exceeded Mechanical Jam Alarm Level for a time greater than the Mechanical Jam Alarm Time Delay. Stator RTD Alarm Level temperature exceeded on at least one stator RTD.

RTD Alarm Level temperature exceeded.

Stator RTD High Alarm Level temperature exceeded.

RTD High Alarm Level temperature exceeded.

Open circuit on RTD. - Check continuity of RTDs. 3.16,

Indicates a possibly shorted RTD in ambient temperature above 0°C.

Thermal capacity used equals or exceeds setpoint

Low incoming voltage from substation.

High incoming voltage from substation.

Fault in excitation control system. - Check excitation.

Machine KVAR limit exceeded. - Adjust excitation.

Meter is not connected or not responding.

Meter firmware is an older revision than the 269 firmware.

- Reduce motor load. 3.15

- Check motor windings for shorts, moisture, or conductive particles.

- Check incoming phases for unbalance.

- Check system for loss of load. 3.12

- Check system for jams/excessive load.

- Check motor ventilation and ambient temperature.

- Check motor ventillation and ambient temperature.

- Check continuity of RTDs.

- Adjust transformer tap changer.

- Check meter control power.

- Check meter wiring to 269.

- Upgrade meter firmware

3.11

3.10

3.13

3.16

3.17

3.16

3.17

•• Available only if a GE Multilin meter (MPM) is installed and on-line (see pg. 7 setpoints, line 2)

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3 SETUP AND USE

3.7 Phase CT and Motor Full Load Current Setpoints

The "PHASE CT RATIO" is entered into the 269 relay in SETPOINTS mode, page 1. This value must be entered correctly in order for the relay to read the actual motor phase currents. The choice of phase CTs depends on the Full Load Current of the motor. The Phase CTs should be chosen such that the Full Load Current is not less than 50% of the rated phase CT primary. For maximum accuracy, the phase CT primary should be equal to the FLC of the motor, but never more. The maximum phase CT primary current is 1500A. For higher ratings, please contact the factory.

The "MOTOR FULL LOAD CURRENT" setpoint is used by the relay as the maximum continuous current that the motor can draw without overheating and should be taken from the motor nameplate or data sheets. It is entered into the relay in SETPOINTS mode, page 1.

If the motor has a service factor, it may be accommodated using the Overload Pickup Level setpoint. See Sections 3.18 and 3.20.

When the relay detects a current greater than the Overload Pickup Level x FLC, the time/overload curve will come into effect, and the Trip relay will activate after a time determined by the overload curve shape, the amount of phase current unbalance present and the RTD bias (when enabled), and the thermal memory contents.

3.8 Acceleration Time Setpoint

The acceleration time of the drive system is entered into the 269 relay in SETPOINTS mode, page 1. This feature is strictly a timer that can be used to protect the equipment driven by the motor. This time does not affect the thermal memory calculated by the relay.

The acceleration time is used by the relay as the maximum allowable time between a motor start attempt and the beginning of normal running operation. A motor start attempt is detected by the 269 when an average phase current greater than one full load current is detected within one second following a motor stop condition. A normal running condition will be detected by the relay when the phase current drops below overload pickup ×FLC for any length of time following a start. When the phase current drops below 5% of CT primary rated amps a motor stop will be detected. In the case where a motor may idle at less than 5% of rated CT primary Amps (ie. synchronous motor) it is imperative that a 52b contact is input to the 269 (52b contact reflects the opposite state of the breaker). The 269 will then determine a “STOP” condition if motor current is less than 5% of CT primary and the 52b contact is closed (see section 3.9).

To protect against a locked rotor condition the 269 relay allows its thermal memory (see section 3.20) to fill during a start. Thus if the heat produced by a locked rotor condition causes the thermal capacity of the motor to be exceeded, an overload trip will be initiated. The acceleration time setpoint can only be used for driven load protection, not locked rotor protection.

If the Acceleration Time function is not required, the setpoint should be set to "OFF".

3.9 Inhibits

An Inhibit is a feature that becomes active only once a motor 'STOP' condition has been detected and prevents motor starting until the Inhibit has timed out. There are two Inhibit features in the 269. They are Starts/Hour and Time Between Starts. These two features are assigned to output relays in one group as Inhibits. After a motor has stopped, if either of the Inhibits are active, the output relay(s) assigned to Inhibits will activate and the message that appears will represent the Inhibit with the longest lockout time remaining. Neither of the Inhibits will increment any of the statistical values of page four of actual values, and all of the Inhibits are always auto-reset.

The allowable number of motor Starts per Hour is entered into the 269 relay in SETPOINTS mode, page 1. The relay keeps a record of the number of motor starts over the past hour and will cause an output relay activation when this value is equal to the setpoint value. An Inhibit will occur only after the motor is stopped. This setpoint should be obtained from the motor manufacturer's data sheets. If more than 5 starts/hour are allowed, this setpoints should be stored as "OFF". The relay starts/hour counter will be saved if power is lost to the unit. Note that the 269 relay must detect all motor start attempts (see section 3.8) in order for this feature to operate correctly.

A value in minutes for the Time Between Starts feature is entered into the 269 relay in setpoints mode, page 5. The time between starts timer is loaded during a start condition and begins to decrement. Once the motor stops, if the timer has not decremented to zero, an Inhibit will occur. The Inhibit will time out when the timer decrements to zero, and another start will be possible.

NOTE: Due to the nature of the Inhibit features, they fall into the class of 269 Trip features and therefore they must be active only during a motor 'STOP' condition. (ONLY ONE TRIP OR INHIBIT MAY OCCUR AT ANY ONE TIME). The detection of a motor 'STOP' condition is important. In the case where a motor may idle at less than 5% of rated CT primary amps (i.e. synchronous motors), it is imperative that a 52B contact is input to the spare terminals (44,45) to detect a motor 'STOP' condition (52B contact reflects the opposite state of the

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breaker). Enabling the 52B contact setpoint in page 5 of setpoints will allow the 269 to determine a 'STOP' condition if motor current is less than 5% CT primary and the 52B contact is closed.

It is recommended that the trip functions and inhibit features be assigned to different relays. For example, all the trip functions may be assigned to activate the TRIP relay when a trip condition is met. The Inhibit Lockout should then be assigned to activate the AUX1 relay when the motor stops and an inhibit is issued by the 269. Separating TRIPs and INHIBITs in this manner makes it easier for operators to properly diagnose problems and take appropriate corrective action.

Also, the “CAUSE OF LAST EVENT” message seen on page 5 of Actual Values clearly shows whether the last event was a TRIP or an INHIBIT.

Note: Inhibit lockouts are assigned to the AUX1

relay as a factory default. Ensure that AUX1 contac-

tors are properly wired in your control circuit. See

Figure 3.2 and Figure 3.3 for wiring details.

3.10 Unbalance Setpoints

Unbalanced three phase supply voltages are a major cause of induction motor thermal damage. Unbalance can be caused by a variety of factors and is common in industrial environments. Causes can include increased resistance in one phase due to pitted or faulty contactors, transformer faults and unequal tap settings, or non-uniformly distributed three phase loads. The incoming supply to a plant may be balanced but varying single phase loads within the plant can cause voltage unbalance at the motor terminals. The most serious case of unbalance is single phasing which is the complete loss of one phase of the incoming supply. This can be caused by a utility supply problem or by a blown fuse in one phase and can seriously damage a three phase motor.

Unbalance at the motor terminals means an increase in the applied negative sequence voltage. This results in a large increase in the negative sequence current drawn by the motor due to the relatively small negative sequence impedance of the rotor. This current is normally at about twice the power supply frequency and produces a torque in the opposite direction to the desired motor output. For small unbalances the overall output torque will remain constant, but the motor will be developing a large positive torque to overcome the negative sequence torque. These opposing torques and the high negative sequence current produce much higher rotor losses and consequently greatly increased rotor heating effects. Stator heating is increased as well, but to a much smaller extent. The amount of unbalance that a given motor can tolerate is therefore dependent on the rotor design and heat dissipation characteristics.

3 SETUP AND USE

Persistent, minor voltage unbalance can thus lead to rotor thermal damage while severe unbalance such as single phasing can very quickly lead to a motor burnout.

For phase currents above 100% FLC, the 269 relay calculates the ratio of the negative to positive sequence currents (In/Ip) for unbalance protection. The method of determining In/Ip is independent of actual line frequency or phase current lead/lag characteristics. This negative sequence unbalance method provides readings similar to the NEMA unbalance calculation but gives more realistic results for the thermal effect of unbalance on the motor (for a 269 unbalance example see Appendix A). For phase currents below 100% FLC, the relay calculates the ratio of In to full load current (In/IFLC) and uses this to provide protection. This avoids nuisance trips due to relatively high levels of In with lower levels of Ip that may create high U/B levels at low loads.

For unbalance protection, trip and alarm In/Ip ratios may be chosen along with appropriate persistence times (time delays) in SETPOINTS mode, page 1. If no separate unbalance protection is desired, the trip and alarm levels should be set to "OFF". The delay times will then be disregarded by the relay. Above 100% FLC, if an unbalance of more than 30% persists for more than 4 seconds, a "SINGLE PHASE TRIP" will result. Below 100% FLC, if motor load is >25%, and any one phase reads zero, this will also be considered a single phase condition. The single phase time delay can be adjusted by contacting the factory.

Note: If the "UNBALANCE TRIP LEVEL" is set to "OFF," single phase protection will be turned off.

It should be noted that a 1% voltage unbalance typically translates into a 6% current unbalance. So, if for example the supply voltage is normally unbalanced up to 2%, the current unbalance seen by a typical motor would be 2×6 = 12%. Set the alarm pickup at 15% and the trip at 20% to prevent nuisance tripping. 5 or 10 seconds is a reasonable delay.

Other factors may produce unbalanced phase currents. Cyclic, pulsating and rapidly changing loads have been observed to create unbalance in motors driving machines such as ball mill grinders, shredders, crushers, and centrifugal compressors, where the load characteristics are constantly and rapidly changing.

Under such circumstances, and in order to prevent nuisance unbalance trips or alarms, the pickup level should not be set too low. Also, a reasonable time delay should be set to avoid nuisance trips or alarms. It is recommended that the unbalance input to thermal memory be used to bias the thermal model, thus accounting for motor heating that may be caused by cyclic short term unbalances.

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3.11 Ground Fault (Earth Leakage) Setpoints

Aging and thermal cycling can eventually cause a lowering of the dielectric strength of the insulation in the stator winding. This can produce a low impedance path from the supply to ground resulting in ground fault currents which can be quite high in solidly grounded systems. In resistance grounded systems there is a resistance in series with the supply source to limit ground fault current and allow the system to continue operating for a short time under fault conditions. The fault should be located and corrected as soon as possible, however, since a second fault on another phase would result in a very high current flow. In addition to damaging the motor, a ground fault can place the motor casing above ground potential thus presenting a safety hazard to personnel.

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3 SETUP AND USE

Figure 3.2 Wiring Diagram for Contactors

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3 SETUP AND USE

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Figure 3.3 Wiring Diagram for Breakers

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3 SETUP AND USE

On the occurrence of a ground fault caused by insulation breakdown, an unprotected motor will commonly suffer severe structural damage and have to be replaced. The fault could also shut down the power supply bus to which the faulty motor is connected.

Ground faults can occur in otherwise good motors because of environmental conditions. Moisture or conductive dust, which are often present in mines, can provide an electrical path to ground thus allowing ground fault current to flow. In this case, ground fault protection should shut down the motor immediately so that it can be dried or cleaned before being restarted.

For ground fault protection by the 269 relay, all three of the motor conductors must pass through a separate ground fault CT (see section 2.6). The CT may be either GE Multilin’s 50:0.025A (2000:1 ratio) or 50:5 up to 1500:5 and is chosen in SETPOINTS mode, page 1. Separate ground fault trip and alarm levels, and persistence times (time delays) may also be set. The ground fault trip can be instantaneous, or up to 20.0 seconds of time delay can be chosen to allow the 269 relay to be coordinated with other protective devices and switchgear.

The amount of current that will flow due to a fault depends on where the fault occurs in the motor winding. A high current flow will result if a short to ground occurs near the end of the stator winding nearest the terminal voltage. A low ground fault current will flow if a fault occurs at the neutral end of the winding since this end should be a virtual ground. Thus a low level of ground fault pickup is desirable to protect as much of the stator winding as possible and to prevent the motor casing from becoming a shock hazard. In resistance grounded systems the ground fault trip level must be set below the maximum current limited by the ground resistor or else the relay will not see a large enough ground fault current to cause a trip.

3.12 Undercurrent Setpoints

These setpoints are found in SETPOINTS mode, page 1 and are normally used to detect a decrease in motor current flow caused by a loss of, or decrease in, motor load. This is especially useful for indication of loss of suction for pumps, loss of airflow for fans, or a broken belt for conveyors. When the current falls below the setpoint value for the setpoint time, the relay assigned to the undercurrent trip or alarm function will become active.

If this feature is used for loss of load detection, the "UNDERCURRENT ALARM LEVEL" or “UNDERCURRENT TRIP LEVEL” setpoints should be chosen to be just above the motor current level for the anticipated reduced load condition. If the feature is not desired, the alarm and trip levels should be set to "OFF". The delay time setpoint, will then be ignored by the relay.

If the motor is normally operated at a current level below its rated full load current, this feature may be used for a pre-overload warning. This is accomplished by setting the "UNDERCURRENT ALARM LEVEL" to be above the normal operating current of the motor but below the rated full load current. In this way the undercurrent function will cause the relay assigned to it to become inactive if the motor current increases above the Undercurrent setpoint level. This would indicate an abnormal loading condition prior to an actual motor overload.

The output relay assigned to the undercurrent function will automatically reset itself when the motor stops (i.e. when the phase current becomes zero) unless this relay is programmed as latched (see "RELAY ALARM LATCHCODE", SETPOINTS, page 5). The undercurrent trip function is always latched and a reset is required to clear the trip.

The ground fault trip level should be set as low as possible, although too sensitive a setting may cause nuisance trips due to capacitive current flow. If nuisance trips occur with no apparent cause the trip level should be increased; conversely if no nuisance trips occur a lower fault setpoint may be desirable.

CAUTION: Care must be taken when turning on this feature. If the interrupting device (circuit breaker or contactor) is not rated to break ground fault current (low resistance or solidly grounded systems), the trip setpoint should be set to “OFF”. The feature may be assigned to the AUX1 relay and connected such that it trips an upstream device that is capable of breaking the fault current.

3.13 Rapid Trip / Mechanical Jam Setpoints

These setpoints are found in SETPOINTS mode, page 1 and are used to protect the driven mechanical system from jams. If used, this feature is active only after the motor has successfully started, and will cause relay activation in the event of a stall while the motor is running.

A current surge of 150% to 600% of motor full load from 0.5 to 125.0 seconds during motor operation, depending on the setpoints chosen, will cause the relay assigned to the Rapid Trip or Mechanical Jam alarm functions to become active. To disable the Rapid Trip or Mechanical Jam alarm functions, the "RAPID TRIP/MECH. JAM TRIP LEVEL" or “MECHANICAL JAM ALARM LEVEL” setpoints should be set to "OFF". The "RAPID TRIP TIME DELAY" and “MECHANICAL

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3 SETUP AND USE

JAM TIME DELAY” setpoints will then be disregarded by the relay.

Note: These features are not recommended for use with systems that experience overloads as part of normal operation.

It is possible to operate the 269 without connecting any RTDs to it. A setpoint on page 2 of Setpoints asks the question:

ARE THERE ANY RTDsARE THERE ANY RTDs CONNECTED? NOCONNECTED? NO

3.14 Short Circuit Setpoints

The Short Circuit protective function provides overriding protection for any large phase current. Complete protection from phase-to-phase and phase-to-ground faults is provided with this feature. This feature is active at all times, including during motor starts, unless the "SHORT CIRCUIT TRIP LEVEL" is set to OFF. The setpoints are in SETPOINTS mode, page 1.

The phase current short circuit trip level can be set from 4 to 12 times motor full load current. The trip can be instantaneous or can be delayed by up to 20.5 seconds to facilitate coordination with system switchgear. If this feature is not desired the "SHORT CIRCUIT TRIP LEVEL" setpoint should be set to "OFF". If this is done the relay will disregard the "SHORT CIRCUIT TIME DELAY" setpoint.

CAUTION! When using this feature be certain that the interrupting device can safely open to break the short circuit duty. Otherwise this setpoint must be set to OFF. Other means of interrupting fault currents must then be used (e.g. fuses).

3.15 Immediate Overload Alarm Level Setpoint

The Immediate Overload Alarm Level setpoint is found in SETPOINTS mode, page 1. It is adjustable from

1.01 XFLC to 1.50 XFLC. An output relay activation will occur immediately when the average phase current goes over the setpoint value. This function can never cause latched (manual reset) relay operation.

An Immediate Overload Alarm will not be issued when the motor is started. This function is only active when the motor is in the run mode.

3.16 Stator RTD Setpoints

if the answer is “NO”, the 269 hides all RTD related Setpoints and Actual Values thus making it easier to program for the application.

The 269 relay displays temperatures in either Celsius or Fahrenheit depending on the RTD Message Display setpoint. If Fahrenheit option is chosen the increment can vary between 1 and 2 due to the conversion from Celsius to Fahrenheit and the rounding of the result.

NOTE: CARE MUST BE TAKEN NOT TO ENTER CELSIUS VALUES FOR SETPOINT PARAMETERS WHEN IN FAHRENHEIT MODE AND VICE-VERSA.

The 269 relay has 6 sets of 4 terminals available for the connection of RTDs to monitor the temperature of the stator windings. If fewer than 6 RTDs are to be used they must be connected to the lowest numbered RTD connections on the rear of the relay. The stator RTD setpoints are found in SETPOINTS mode, page 2. The "# OF STATOR RTDS USED" setpoint should be chosen to represent the number of RTDs actually connected to the motor stator windings. Thus if 3 RTDs are connected to the stator, the "# OF STATOR RTDS USED" setpoint should be set to 3, and the 3 RTDs must be connected to the terminals for RTD1, RTD2, and RTD3 (terminals #1-12).

There are individual trip and alarm setpoints for each RTD. A relay activation will occur when any one of the RTD temperatures goes over its corresponding setpoint value. The maximum stator RTD temperature at any time will be used for relay thermal calculations. Activation will occur when at least two stator RTDs go over their corresponding setpoints. This is the case when the “Stator RTD Voting” scheme is in effect. Other RTDs are not affected by the voting feature. Trip relay activation for other RTDs will occur when any one of the RTD temperatures goes over its setpoint value. This is also the case for stator RTDs if voting is defeated. Stator RTD alarms, high alarms and other RTD Alarms are also issued based on individual RTD setpoints. The maximum stator RTD temperature at any time will be used for relay thermal calculation.

The 269 is ordered with one of the following RTD types: 100 ohm platinum, 10 ohm copper, 100 ohm nickel, or 120 ohm nickel. A message on page 2 of Setpoints may be examined to determine the type of RTD built into the relay.

3-50

When the relay is in ACTUAL VALUES mode the temperature readings from all of the RTDs may be displayed. If no connection has been made to any RTD terminals, the display for that RTD will be "no RTD". If the answer to the question “ARE THERE ANY RTDs CONNECTED?” is “NO”, the display will show “NO RTDs ARE CONNECTED TO THE 269PLUS”. If the "# OF STATOR RTDS USED" setpoint is stored as 3, only the maximum temperature from RTD1, RTD2, and

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3 SETUP AND USE

RTD3 will be used for motor temperature calculations. Thus, in this case, RTD4, RTD5, and RTD6 may be used for any other RTD temperature monitoring function desired.

If a stator RTD becomes open circuited during use, the ACTUAL VALUES display for that RTD will be "no RTD". Readings from the disconnected RTD will then be ignored. The 269 Plus relay will enter TRIP/ALARM mode to warn the user of the faulty RTD if the "No Sensor Alarm" is enabled (SETPOINTS, page 5). Similarly, if the “Low Temperature Alarm” is enabled (Setpoints, page 5) the relay will enter Trip/Alarm mode to warn the user of any one RTD measuring 0°C (32°F). This setpoint can be used to detect shorted RTDs given that the normal running temperature of the motor’s stator, bearing and other RTDs is not 0°C or less. After a stator RTD temperature trip, alarm, or high alarm setpoint is exceeded the 269 Plus relay will not allow the active output relays to be reset until the temperature has fallen 4°C below the exceeded setpoint.

3.17 Other RTD Setpoints

A total of 8 RTD inputs is provided on the 269. Any RTD inputs not used for stator RTD protection can be used for other temperature monitoring functions. These will commonly be used for motor and load bearings. Separate alarm and trip level temperatures can be selected for each RTD in SETPOINTS mode, page

until the temperature has fallen 4 C below the exceeded setpoint.

To use RTD #8 for ambient air temperature sensing a setpoint in page 5 of SETPOINTS mode must be changed (see sections 3.4, 3.20).

3.18 Overload Curve Setpoints

The overload curve is chosen in SETPOINTS mode, page 3. The curve will come into effect when the motor phas current goes over the Overload Pickup level x FLC (see Figure 3.4). When this is true the motor thermal capacity will be decreased accordingly; the output relay assigned to the OVERLOAD TRIP function will activate when 100% of the available thermal capacity has been exhausted. Thermal capacity may be reduced by the presence of unbalance and RTD bias as well as overload (if the U/B and RTD inputs to thermal memory are enabled). Thus the times on the overload curve may be reduced due to phase current unbalance (see section 3.20). A choice of eight standard curves, as shown in Figure 3.5, is available on the 269.

Trip and alarm level setpoints should be set to "OFF" for any unused RTD terminals. When no connection is made to a set of RTD terminals or if a sensor becomes damaged, the ACTUAL VALUES display for that RTD will be "no RTD". If the "No Sensor Alarm" is enabled (SETPOINTS, page 5) the relay will enter TRIP/ALARM mode to warn the user of any open RTD connection that does not have its trip and alarm level setpoints stored as "OFF". Similarly, if the “Low Temperature Alarm” is enabled (Setpoints, page 5) the relay will enter Trip/Alarm mode to warn the user of any one RTD measuring 0°C (32°F). The 269 can detect shorted RTD’s in motors where the normal running temperature, hence stator RTD and bearing RTD temperature, is not 0°C (32°F) or less. If an RTD becomes shorted, and the “Low Temperature Alarm” setpoint is enabled, the 269 will detect that shorted RTD, and displays a message indicating a “Low Temperature Alarm” for that specific RTD. The RTD number is also displayed for ease of troubleshooting. This feature is not recommended to be used in harsh environments where normal running motor temperature (stator and bearing RTD temperature) can go to 0°C or less.

RTDs connected to the RTD terminals of the 269 relay must all be of the same type. After an RTD temperature trip or alarm setpoint is exceeded, the 269 relay will not allow the activated output relays to be reset

Figure 3.4 Standard Overload Curves with Overload

Pickup

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Protection of a motor with a service factor that is not

1.0 may use the Overload Pickup Level setpoint to ensure the overload curve does not pick up until the desired level. This setpoint determines where the overload curve picks up as a percent of FLC; it effectively cuts off the overload curve below the setpoint x FLC.

NOTE: If a new curve number is stored while the motor is running, the new curve will not come into effect until the motor has stopped.

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Table 3-5 Standard Overload Curve Trip Times (in seconds)

Overload GE Multilin Standard Curve Number

Level 1 2 3 4* 5 6 7 8

1.05 853 1707 2560 3414 5975 7682 10243 12804

1.10 416 833 1249 1666 2916 3749 4999 6249

1.20 198 397 596 795 1391 1789 2385 2982

1.30 126 253 380 507 887 1141 1521 1902

1.40 91 182 273 364 637 820 1093 1366

1.50 70 140 210 280 490 630 840 1050

1.75 42 84 127 169 296 381 508 636

2.00 29 58 87 116 203 262 349 436

2.25 21 43 64 86 150 193 258 322

2.50 16 33 49 66 116 149 199 249

2.75 13 26 39 53 92 119 159 198

3.00 10 21 32 43 76 98 131 163

3.50 7 15 23 30 54 69 92 115

4.00 5 11 17 23 40 52 69 87

4.50 4 9 13 18 31 40 54 67

5.00 3 7 10 14 25 32 43 54

5.50 2 5 8 11 20 26 35 43

6.00 2 4 7 9 17 22 29 36

6.50 2 4 6 8 14 18 24 30

7.00 1 3 5 7 12 16 21 27

7.50 1 3 4 6 10 13 18 22

8.00 1 2 3 5 9 11 15 19

* - Factory preset value

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Figure 3.5 Standard Overload Curves

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3 SETUP AND USE

3.19 Thermal Capacity Alarm

The Thermal Capacity Alarm setpoint level determines the threshold that thermal capacity must equal or exceed for an alarm condition to exist. The time delay set determines the amount of time that these conditions must persist before an actual alarm occurs.

3.20 Thermal Memory

The 269 relay uses an internal thermal memory register to represent the thermal capacity of the motor. To "fill" this register, the square of the equivalent motor heating current is integrated over time. This equivalent current is a biased average of the 3 phase currents. The rate at which the memory fills is thus dependent on the amount of overload as well as RTD bias. The RTD bias can be defeated using a setpoint in page 5 of SETPOINTS mode. When the thermal memory register fills to a value corresponding to 100% motor thermal capacity used, an OVERLOAD TRIP will be

initiated. This value is determined from the overload curve.

Thermal memory is emptied in certain situations. If the motor is in a stopped state the memory will discharge within the motor STOPPED COOL TIME (factory value = 30 min.). If the motor is running at less than full load, thermal memory will discharge at a programmed rate to a certain value. This value is determined by the "FLC Thermal Capacity Reduction" setpoint. For example, a value of 25% may be chosen for this setpoint. If the current being drawn by the motor drops below full load current to 80%, then the thermal memory will empty to 80% of the FLC Thermal Capacity Reduction setpoint, namely, 20% (0.8 × 25%). In this way the thermal memory will discharge to an amount related to the present motor current in order to represent the actual temperature of the motor closely. Thermal memory will discharge at the correct rate, in an exponential fashion, even if control power is removed from the 269.

Figure 3.6 Hot Motor Thermal Capacity Reduction

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Thermal memory can be cleared to 0% by using the Emergency Restart feature (see section 3.21).

If the phase current is between 1.00 × FLC and the Overload Pickup level × FLC, one of two thermal model algorithms can be observed. If the THERMAL CAPACITY USED is less than the phase current (as a multiple of FLC) × the FLC Thermal Capacity Reduction setpoint, the THERMAL CAPACITY USED will rise to that value. If, on the other hand, the THERMAL CAPACITY USED is above that value, it will remain unchanged (neither increase nor decrease) unless RTD BIAS is enabled, in which case the greater of the two values will be used.

Thermal capacity reduction may be calculated using the following formula:

Time Stall Motor Hot



1 ×

−=TCR

 



100



Time Stall Motor Cold



U/B INPUT TO THERMAL MEMORY - When U/B input to thermal memory is defeated the 269 relay will use the average of the three phase currents for all overload calculations (ie. any time the overload curve is active). When U/B input to thermal memory is enabled the 269 relay will use the equivalent motor heating current calculated as shown:

Ieq = Iavg (with U/B input to thermal memory disabled; factory preset)

lnKlpI ++= (with U/B input to thermal memory

enabled)

where K =

I (Amps)

FLC

or user entered value

(negative sequence current heating factor; see below) Ieq = equivalent motor heating current Iavg = average of three phase currents Iflc = motor full load current Istart = learned motor starting current (avg. of last 4 starts) Ip = positive sequence component of phase current In = negative sequence component of phase current

Thus the larger the value for K the greater the effect of current unbalance on the thermal memory of the 269 relay.

RTD INPUT TO THERMAL MEMORY - When the hottest Stator RTD temperature is included in the Thermal memory (Setpoints mode, page 5, factory preset disabled) the maximum measured stator RTD temperature is used to bias (correct) the thermal model. The RTD BIAS curve acts as a double check of the thermal model based on feedback from the actual stator temperature (as measured from the RTDs). When the hottest stator temperature is at or above the RTD Bias Maximum value (Setpoints mode, page 5) the thermal capacity used is 100%. When the hottest stator RTD

temperature is below the RTD Bias Minimum value (Setpoints mode, page 5) there is no effect on the thermal capacity used. Between these two extremes, the thermal capacity used is determined by looking up the value of the Hottest Stator RTD on the user's curve (RTD BIAS Min, Center, Max temperatures, RTD BIAS Center Thermal Capacity) and finding the corresponding Thermal Capacity used. The Hottest Stator RTD value for Thermal Capacity used is compared to the value of THERMAL CAPACITY USED generated by the thermal model, (overload curve and cool times). The larger of the two values is used from that point onward. This feedback provides additional protection in cases where cooling is lost, the overload curve was selected incorrectly, the ambient temperature is unusually high, etc.

The two-part curve allows for easy fitting of HOT / COLD curves to the RTD BIAS feature. The minimum value could be set to the ambient temperature the motor was designed to (40°C). The center point for thermal capacity could be set to the difference between the hot and cold curves (eg. 15 %). The center point temperature could be set for hot running temperature (eg. 110°C). Finally, the Maximum value could be set to the rating of the insulation (eg. 155°C) The user has the flexibility to set the RTD BIAS as liberally or conservatively as he/she desires.

It should be noted that the Thermal Capacity values for the RTD BIAS curve MUST increase with temperature. For this reason, there is range checking on the temperature setpoints (eg. the minimum setpoint cannot be larger than the center temperature setpoint). It may take a couple of attempts to set the parameters to the desired values (it is best to start with the minimum or maximum value).

It should also be noted that RTD BIAS may force the THERMAL CAPACITY USED value to 100%, but it will never alone cause a trip. If the RTD BIAS does force THERMAL CAPACITY USED to 100%, when the motor load increases above the overload pickup value, a trip will occur immediately (see Appendix B). A trip by RTDs will only occur when the RTD values exceed the user's trip level for RTD trip, as defined in page 2 of setpoints.

Additionally, RTD bias may artificially sustain lockout times for the O/L and Start Inhibit features as they are based on thermal capacity.

3.21 Emergency Restart

When production or safety considerations become more important than motor protection requirements it may be necessary to restart a faulted motor. Momentarily shorting together the Emergency Restart terminals will discharge the thermal memory to 0% so that the relay can be reset after an OVERLOAD TRIP. In

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this way the lock-out is avoided. The Emergency Restart feature will also reduce the relay's starts/hour counter by one each time the terminals are shorted together, so that a STARTS/HOUR INHIBIT can be defeated.

When RTD input to thermal memory (SETPOINTS, page 5) is enabled and the Emergency Restart feature is used, thermal capacity will be reduced to 0% only for as long as the Emergency Restart terminals are held shorted (note: it may take up to 11 seconds for the "Thermal Capacity Used" display to change to 0%). When the Emergency Restart terminals are opened again, the thermal capacity will change to what is used according to the maximum stator RTD temperature and Figure 3.7. Thus, momentarily shorting the Emergency Restart terminals with RTD input to thermal memory enabled may not reduce the thermal capacity used to 0% when the motor is hot.

Shorting the Emergency Restart terminals together will have no effect unless the motor is stopped. Thus having these terminals permanently shorted together will cause the memory to be cleared when the motor stops. This will allow for an immediate restart after an OVERLOAD TRIP.

Caution is recommended in the use of this feature since the 269 relay's thermal protective functions will be overridden and it is possible to damage the motor if Emergency Restart is used.

to be displayed. However, shorting the Emergency Restart terminals together will reduce the lock-out time, allowing the relay to be reset immediately.

Note: If RTD input to thermal memory is enabled (SETPOINTS, page 5) the lock-out time may not be reduced to 0 minutes since the thermal capacity available is dependent on the RTD bias curve and the maximum stator RTD temperature (see section

3.21).

If the External Reset terminals are permanently shorted together the relay will be reset immediately when motor conditions allow (eg. when the lock-out time runs out).

If the 269 relay trips and then loses control power, the trip function will become active again once control power is re-applied. For example, if a GROUND FAULT TRIP occurs and then control power for the relay is removed and later returned, the message "GROUND FAULT TRIP" will appear on the display and the output relay assigned to the Ground Fault Trip function will become active.

Note: If control power is removed for more than one hour after a trip, the 269 relay may be reset when power is re-applied (for O/L trips).

3.23 269 Relay Self-Test

All of the inhibits will be cleared if the Emergency Restart terminals are shorted with the exception of the backspin timer (section 3.9). Due to the potentially dangerous conditions of a rotor spinning backwards, the only way to defeat the backspin timer is to turn the setpoint “OFF”.

3.22 Resetting The 269 Relay

Resetting the 269 relay after a trip must be done manually by pressing the RESET key, or by shorting together the External Reset terminals. Alarm functions can cause latched (manual reset) or unlatched (automatic reset) output relay operation depending on the RELAY ALARM LATCHCODE (SETPOINTS mode, page 5). A latched relay will stay activated until the RESET key is pressed or the External Reset feature is used. Remote reset via communications is also possible. See Chapter 4.

If a trip/alarm condition persists (eg. a high RTD temperature), or if the relay has locked out the motor, pressing the RESET key will cause the flash message,

RESET NOT POSSIBLE -RESET NOT POSSIBLE Condition still present.Condition still present.

The 269 relay's internal circuitry self-test consists of three separate tests. A/D, RTD, and memory circuitry tests are continually performed. The A/D test involves sending a known, precise voltage level through the A/D circuitry and seeing if it is converted correctly. The RTD test involves reading a known, internal resistance and checking to see if the correct temperature is determined. To test the memory circuitry, test data is stored in the 269 relay's non-volatile RAM and is then read and compared with the original data.

Should any of these tests indicate an internal circuitry failure, the "SERVICE" LED will start to flash and the output relay programmed for the self-test feature will activate.

Note: When a relay A/D or memory self-test failure occurs, all metering and protective functions will be suspended. The ACTUAL VALUES display for all parameters will be zero in order to avoid nuisance tripping. When in this state, the relay will not provide motor protection. If a memory failure occurs, the factory setpoints will be reloaded into the 269. If an RTD hardware failure occurs the "# OF STATOR RTDS USED" setpoint will be automatically set to 0 and the RTD ALARM and TRIP levels will be automatically set to OFF; however all currentrelated functions will continue to operate normally.

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3.24 Statistical Data Features

the 269 relay will reload the factory setpoints but will not provide motor protection.

The model 269 relay offers a record of maximum RTD temperatures and pre-trip current and RTD values. The maximum RTD temperature data is found on page 2 of ACTUAL VALUES mode and can be cleared to zero by storing a YES in response to the "CLEAR LAST ACCESS DATA?" question at the end of page 2. Pretrip motor current and temperature values are found in ACTUAL VALUES mode, page 5. These values will be updated only when a relay trip occurs. Note that if a trip function setpoint is set to INST. (instantaneous) and this type of trip occurs, the values for pre-trip current will not be recorded exactly. This is because the relay has tripped instantaneously and thus did not have enough time to update the registers holding this information. The pre-trip values can be cleared to zero by storing a YES in response to the “CLEAR PRE-TRIP DATA?” question at the end of page 5 of Actual Values.

Running hours and MegaWatt hours can be cleared to zero by storing a value of YES in response to the "START NEW COMMISSIONING?" question at the end of page 4.

The running hours and MegaWatt hours data will reset to zero after each reaching the number 65535.

If a 269 relay is to be taken out of service for maintenance or testing purposes, the statistical data accumulated by the relay may be copied to the new relay replacing it. Simply record the information from page 4 of Actual Values and call the factory for a detailed procedure on transferring this information to the new relay.

The obvious benefit of this exercise is the ability of the new relay to start with accurate data about the motor and the system to maintain a continuity from relay to relay during maintenance or testing of the original 269.

When the original relay is ready to be reinstalled, the same procedure may be followed to transfer the accumulated statistical data from the replacement relay to the original 269.

A list of the motor current, RTD, and overload curve setpoints is given in Table 3-6. For other factory setpoints see Tables 3-7 and 3-3.

3.26 Meter Option

The addition of a GE Multilin MPM meter to a 269 provides valuable voltage and power measurement. These values are good for troubleshooting and protective features.

In order to install the MPM, all connections to the meter must be made. Then, on the 269 page 7 of Setpoints, meter CT primary, VT ratio and VT secondary must be programmed. These setpoints will be sent to the meter via the communication link for meter calculations. *** IMPORTANT *** Only after the above steps are complete may the meter be brought on-line by changing the meter on-line setpoint (page 7) to YES. The 269 will then initiate communication with the meter and actual values from the meter may be displayed.

A value for MegaWattHours from 0-65535 may be displayed in the Statistical data of Actual Values page 4. Voltage, KWatts, KVARS, Power Factor, and Frequency may be viewed on page 7 of Actual Values. These values may also be seen as their pre-trip levels on page 5 of Actual Values.

The Undervoltage trip and alarm levels determine the threshold that voltage must fall below for an alarm or trip condition to exist. The time delay set determines the amount of time that these conditions must persist before an actual trip or alarm occurs.

The Power Factor Lag and Power Factor Lead trip and alarm levels determine the threshold that the power factor must fall below for an alarm or trip condition to exist. The time delay set determines the amount of time that these conditions must persist before an actual trip or alarm occurs.

3.25 Factory Setpoints

When the 269 relay is shipped, it will have default setpoints stored in its non-volatile memory. These values are meant to be used as a starting point for programming the relay and should be changed as each application requires.

In the event of a non-volatile memory failure, which will be detected by the self-test feature (see section 3.23),

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Power Factor is commonly used for synchronous motor protection. Ideally, synchronous motors run at unity power factor. Conditions may exist where the power factor drops below an acceptable level. This may be caused by several factors, such as the loss of field to the main exciter, accidental tripping of the field breaker, short circuits in the field currents, poor brush contact in the exciter, or loss of AC supply to the excitation system.

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time expires. When programming this delay, consideration must be given to the time it takes the motor to start, apply the field and the load.

The positive KVAR alarm and negative KVAR alarm setpoint levels determine the threshold that KVARS must exceed for an alarm or trip condition to exist. The time delay set determines the amount of time that these conditions must persist before an actual trip or alarm occurs.

All motors (synchronous and induction) require vars from the system to run. The 269 displays consumed vars by the motor as positive vars. Conversely, if a synchronous motor is run overexcited as a synchronous condensor, it may be capable of supplying vars back to the system. Such motors are typically used to correct a poor PF in an industrial plant. The 269 displays motor supplied vars as negative vars when a synchronous motor is running at synchronous speed, its power factor is unity and the vars required to run the motor are completely supplied by the field. So, ideally the reactive power for a unity synchronous motor coming from the AC system is zero. Hence, another way of indicating abnormal running conditions on synchronous and induction motors is by using the positive kvar alarm and negative kvar alarm levels and the kvar alarm time delay.

Figure 3.7 Power Measurement Conventions

Power Factor Lead and Power Factor Lag alarm and trip setpoints with programmable time delays can be used to detect such conditions as out of step, loss of synchronism or loss of field.

Where the motor is started unloaded and the field applied later in the start, the power factor may be poor until the motor is loaded and synchronous speed is attained. It may then be necessary to block power factor protection until the motor is up to speed.

A setpoint on page 7 allows the user to pick one of two methods of blocking power factor protection on start. Answering “NO” to the setpoint “BLOCK PF PROTECTION ON START?” puts the 269 in a mode where the “Power Factor protection delay” feature may be enabled. So, when programmed, after the motor has successfully completed a start, this setpoint required that the measured power factor comes between the user specified POWER FACTOR TRIP LEAD and LAG setpoints for the specified period of time (user’s value for Power Factor protection delay) before the power factor trip and alarm features become active. A stop condition resets the algorithm.

Answering “YES” to the setpoint “BLOCK PF PROTECTION ON START?” puts the 269 in another mode where “Block PF alarm & trip on start by: XXX seconds” may be enabled. When this delay is programmed, the 269 blocks power factor lag and power factor lead alarm and trip protection from start until the

Enabling Voltage Phase Reversal allows the 269 to trip or inhibit based on phase reversal sensed from voltage from the MPM. This allows sensing of phase reversal when the bus is energized before the motor is started. There is a 3-4 second delay for voltage phase reversal, and it is also defeated on starts to prevent nuisance trips caused by distortion of the bus voltage waveshape.

The Analog Out Scale Factor setpoint is entered to set the Full Scale value for the MPM analog outputs (KWATTS and KVARS). The value entered here is the multiplier that is multiplied by 100 KW to determine the MPM analog output Full Scale for KWATTS, or by 30 KVAR to determine the MPM analog output Full Scale for KVAR. 4 mA represents 0 KWATTS and 0 KVARS and 20 mA represents full scale. Average RMS current is produced in analog form where 4-20 mA is equivalent to 0 A to 1xCT rating. Power Factor is produced in analog form where 4/12/20 mA represents -0/1/+0 power factor values respectively.

NOTE: If a meter Communications Failure occurs, it may be necessary to press the RESET key to remove the message if that alarm is assigned to a latching relay.

On commissioning of a synchronous motor protected by a 269 and an MPM, correct wiring of the VTs and CTs is crucial for accurate measurement and protection. Typically, commissioning and testing starts with the motor unloaded. It is also typical to examine the power factor to verify the wiring and proper operation of

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the relays, motor and associated equipment. Under such circumstances, the power factor measured by the MPM and displayed by the 269 appears to be swinging from a very low lagging value to a very low leading value with the field being constant. This may mislead you to believe that wiring problems such as reversed CT or VT polarities or wrong connections exist. More often than not however, there is nothing wrong with the wiring. In order to understand why the displayed power factor is swinging from lead to lag, it is important to understand how power factor is determined and why power factor is not the best indication of proper operation and wiring when the motor is unloaded and the field applied. Recommendations will be made for commissioning and checking for wiring problems.

THE PHENOMENON

By convention, an induction motor consumes watts and vars. This is shown in the 269 as positive watts and positive vars. A synchronous motor can consume watts and vars or consume watts and generate vars. This is shown in the 269 as positive watts, positive vars and positive watts, negative vars respectively. See Figure

3.7. Since the motor is unloaded, the real power or kW re-

quired to run the machine is at its minimum. The reactive power or kvar is a function of the field and motor requirement, and is at a high value with the field applied. In fact the motor will be running extremely overexcited. The apparent power or kVA is the vector sum of both kW and kvar as seen in Figure 3.8, and hence it is at a high value with the field applied. The result is a power factor that is significantly low with PF = kW/kVA (low value/high value). Because of these unrealistic motor conditions, and because of digital technology of sampling waveforms, it is possible that the PF sign is detected to be either leading or lagging. This is clearly seen in Figure 3.7 where at around 270°, the PF is very low and changes signs with the slightest movement around this angle in either direction.

kvar

kVA

Figure 3.8

RECOMMENDATIONS

By examining Figure 3.7, it is very obvious that the only stable and reliable number that should be checked on commissioning of unloaded synchronous motors with the field applied is the signed REACTIVE POWER or kvar. Under such circumstances the kvar number should always be NEGATIVE with a value that is significantly larger than that of the real power or kW. Glancing at the kW number, it should be a very small value with possible fluctuations in the sign from positive to negative. By examining the apparent power or kVA number, it should always be positive and also relatively large, almost equal to the kvar number. Consequently, the PF number will be a very small value in the order of

0.02 to 0.2, also with a possible unstable sign going from leading to lagging.

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Once the kvar value is examined and found to be inconsistent with the observations made above, it could be safely assumed that there may be some wiring problems in the switchgear. It is important however, not to ignore the other values, because if the kW value is examined and found to be a large number, regardless of its sign, it is also an indication of wiring problems. Similarly, a large value for the PF, regardless of its sign is an indication of wiring problems.

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Table 3-6 Preset Factory Relay Configurations and Functions

CONFIGURATION/FUNCTION OUTPUT RELAY

TRIP ALARM AUX. 1 AUX. 2 NO

CONFIGURATION

3 SETUP AND USE

Latched (Manual Reset) Unlatched (Automatic Reset) Fail-safe Non-fail-safe

ALARM SIGNALS Immediate O/L Warning

G/F Alarm U/B Alarm U/C Alarm Mechanical Jam Alarm Stator RTD Alarm RTD Alarm Broken Sensor Alarm Low Temperature Alarm TC Alarm U/V Alarm O/V Alarm PF Alarm KVAR Alarm Meter Alarm Self Test Alarm

TRIP SIGNALS O/L Trip

U/B Trip S/C Trip U/C Trip Rapid Trip Stator RTD Trip RTD Trip G/F Trip Acceleration Time Trip Phase Reversal Trip Inhibits Single Phase Trip U/V Trip O/V Trip Power Factor Trip

l l

¡ ¡ ¡

¡ ¡ ¡ ¡

l l

l ¡ ¡

l ¡

l ¡ ¡ ¡

lFunction programmed ON ¡Function programmed OFF

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