GE Industrial Solutions Entelli-Switch 250 User Manual

4.2 (5)

GE Zenith Controls

Entelli-Switch 250

Microprocessor Controller

Transfer Switch Control Panel

71R-2000A

11/04

Operation and Maintenance Manual

Authorized Service

For GE parts and service, call: (773) 299-6600

Table of Contents

Page

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Equipment Inspection and Storage . . . . . . . . .13

Final Equipment Inspection . . . . . . . . . . . . . . .13

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Engine Start Control Connections . . . . . . . . .14

Initial Energization . . . . . . . . . . . . . . . . . . . .14-5

Control Connections . . . . . . . . . . . . . . . . . . . . . .6

Entelli-Switch 250 Microprocessor Controller . . . .17 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 LCD & Keypad . . . . . . . . . . . . . . . . . . . . . . . . . .18 User Setting for Voltage & Frequency . . . . . . .19 Accessory Group Packages. . . . . . . . . . . . . . . . .10 Accessory Definitions . . . . . . . . . . . . . . . . . .11-14 How to Set the System Clock . . . . . . . . . . . . . .14 CDT One Event Timer Exerciser . . . . . . . . . . .15 CDP Clock Exerciser . . . . . . . . . . . . . . . . . . . . .16 User Setup - CFG Menu . . . . . . . . . . . . . . . . . .17 User Setup - SET Menu . . . . . . . . . . . . . . . . . .18 User Setup - System Info . . . . . . . . . . . . . . . . . .19

Page

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .120

Test Options . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Standard Transition . . . . . . . . . . . . . . . . . . . . .121

Delayed Transition . . . . . . . . . . . . . . . . . . . . . .21

Closed Transition . . . . . . . . . . . . . . . . . . . . . . .22

Emergency Service Procedure

for Extended Parallel Time . . . . . . . . . . . . . . .23

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . .24

Standard Transition . . . . . . . . . . . . . . . . . . . . .124

Delayed Transition . . . . . . . . . . . . . . . . . . . . . .24

Closed Transition . . . . . . . . . . . . . . . . . . . . . . .25

Controls Power Supply (CPS) . . . . . . . . . . . . . . . . .26

Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Troubleshooting & Diagnostics . . . . . . . . . . . . . . . .28

Maintenance and Testing . . . . . . . . . . . . . . . . . . . . .29

Inspection and Cleaning . . . . . . . . . . . . . . . . .29

Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Introduction

GE Zenith Transfer Switches are used to provide a continuous source of power for lighting and other critical loads by automatically transferring from source 1 power to source 2 power in the event that source 1 voltage falls below preset limits.

Voltage sensing and system control is performed via a state-of-the-art microcontroller located on the cabinet door. It is designed to give highly accurate control of the transfer switch system.

All GE Zenith transfer switches are designed for use on emergency or standby systems, and are rated for total system or motor loads. Transfer switches are UL Listed under Standard 1008 and CSA Certified under Standard C22.2 No. 178 and IEC Listed under Standard 947.

NOTES: A protective device such as a molded case circuit breaker or fused disconnect switch MUST be installed on both sources of incoming power for circuit protection and as a disconnection device.

All references made within this manual about the term “S1” or “Source 1” relate to a Normal Power Source. All references made about the term “S2” or “Source 2” relate to an Emergency

or Alternative Power Source.

Safety / Installation

DANGER

HAZARDOUS VOLTAGE

(Can Cause Severe Injury or Death)

Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.

The safe operation of your switch is GE Zenith’s focus. The proper storage, installation, operation and maintenance will help increase the life of the switch.

CAUTION

Due to hazardous voltage and current, GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the

installation and maintenance of the switch.

Equipment Inspection

and Storage

Once you have received the transfer switch, inspect it for any damage. This includes damage to the enclosure, power panel, control panel and wiring harness. If any damage is found or suspected, file a claim as soon as possible with the carrier and notify the nearest GE Zenith representative.

Before installation, if it is necessary, store the transfer switch in a clean dry place, protected from dirt and water. Provide ample air circulation and heat, if necessary, to prevent condensation.

 

Operating

 

Storage

Temperature

 

Temperature

(Ambient):

Humidity

-30°C to

40-400 AMP

5% to 95%

+75°C

(molded shell)

(non-con-

(-22°F to

-20°C to +65°C

densing)

+167°F)

(-4°F to +149°F)

 

 

40-4000 AMP

 

 

(all other frame

 

 

and panel types)

 

 

-20°C to +60°C

 

 

(-4°F to +140°F)

 

 

 

 

Table 1

Final Equipment Inspection

Prior to energizing the transfer switch:

1.Remove any debris incurred, with a vacuum, due to shipment or installation.

2.Verify that all cabled connections are correct and that phase rotation of both sources match.

3.Check engine start connections.

4.Verify the correct connection of all control wires.

5.Check settings of all timers and adjust as necessary.

6.Adjust any optional accessories as required.

7.Check the lug torque values of the power connections.

NOTE: Lug torque values are specified in the power panel manual.

8.Make sure that all covers and barriers are installed and properly fastened.

NOTE: Power panels ship from GE Zenith in Source 1 Position.

WARNING

Do not use a blower since debris may become lodged in the electrical and mechanical components and cause damage.

Each GE Zenith transfer switch is factory wired and tested. A complete information package is furnished with each switch which includes:

a.Sequence of operation.

b.Description and operation of all accessories supplied.

c.Power panel connection diagram and schematic.

d.Description and identification of all customer field connections.

Installation of GE Zenith transfer switches includes:

a.Mounting the transfer switch cabinet.

b.Connection of Source 1, Source 2, and Load cables or bus bars.

c.Connection of external control circuits as required.

GE Zenith Controls

Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

3

Installation (cont’d)

DANGER

HAZARDOUS VOLTAGE

(Can Cause Severe Injury or Death)

Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.

 

4

1

 

E

5

2

P Relay

(Engine Start)

 

6

3

Contact rating is

 

10 Ampere at 120VAC

 

or 28VDC Gold plated

Figure 1

Engine Start Control Connections

The engine-start terminals are clearly identified by a label on the microcontroller backplate. In the case of manual transfer switches, or in other applications not requiring the microprocessor, clearly marked terminal blocks are provided in the upper left corner of the control panel for the engine start control wires.

Figure 2 shows location of engine start connections for Bypass Isolation Transfer Switch. Figure 5 (pg.6) shows location of engine start connections for Automatic Transfer Switch.

Terminals for field connections to the A3 Source 2 auxiliary contacts and the A4 Source 1 auxiliary contacts are also provided. These terminals are clearly marked and appear on the side of the power panel. On 400 amp metal frame units these terminals appear on

the bracket above the operator handle.

Figure 2 (Typical)

Initial Energization

Before proceeding, refer to the information package supplied with the ATS and read and understand the information on all accessories provided.

1.Unlock the enclosure.

2.Open the enclosure.

3.Verify the correct system voltage.

NOTE: The equipment rating nameplate on the transfer switch lists the voltage. See Figure 3.

4.Close Source 1 circuit. breaker.

NOTE:The controller will illuminate Source 1 Available LED if proper voltage

is sensed.

5.Verify the phase to phase voltages at Source 1 line terminals.

6.Close Source 2 circuit breaker.

7.Start the generator’s engine.

NOTE: The controller will illuminate Source 2 Available LED when preset voltage and frequency levels are reached.

8.Verify the phase to phase voltages at Source 1 line terminals.

9.Verify that the phase rotation of Source 1

is the same as the phase rotation of Source 2.

10.Shut down the generator’s engine.

11.Place the starting control in the Automatic position.

12.Complete the visual inspection of the transfer switch.

13.Close the enclosure.

14.Lock the enclosure.

GE Zenith Controls

SERIAL NUMBER:

 

RATING: VOLTS -

 

HZ -

AMPS -

PHASE -

SYSTEM VOLTS:

 

MODEL NUMBER:

 

 

Figure 3

CAUTIONS

Certain accessories, per specific schematics, can inhibit automatic transfer. Engine Gen-Set could start when

engine control wires are attached.

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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

GE Zenith Controls

Installation (cont’d)

Initial Energization (cont’d)

After all options and accessories are checked and verified, follow these steps to set up the ATS. Refer to Entelli-Switch 250 display Figure 4. The annunciation LEDs illuminate to indicate (1) source availability,

(2) ATS position, and (3) Entelli-Switch 250 control function (timing).

 

S 1 O K

 

2 1 : 5 6

M O N 2 3 A P R 2 0 0 2

M O R E

T E S T

Figure 4 – LCD and keypad

1.Unlock the enclosure.

2.Open the enclosure.

3.Place the Disconnect Switch in the Inhibit.

NOTE: This step is only performed if the “DS” Option was purchased.

4.Close the external (up-stream) Source 1 circuit breaker.

NOTES: Source 1 Available and Source 1 Position LED’s will illuminate.

If Source 1 Available LED does not illuminate, verify that Source 1 Voltage is above the preset restore value.

The Gen-Set will start and run while

Source 2 stop Delay Timer is timing.

5.Close the External (up-stream) Source 2 line circuit breaker.

6.Start the engine generator in MANUAL mode.

NOTE: When the voltage and frequency reach preset values, the Source 2 Available LED will illuminate.

7.Verify the phase to phase voltages at Source 2 line terminals.

8.Verify that the phase rotation of Source 2 is the same as the phase rotation of Source 1.

9.Shut down the generator's engine. (Place in Automatic Mode.)

NOTE: Source 2 Available LED

will turn off.

NOTE: The engine generator will continue to run for the duration of Source 2 Stop Delay Timer.

10.Place the disconnect switch to ENABLE.

11.Complete the visual inspection of the transfer switch.

12.Close the enclosure.

13.Lock the enclosure.

WARNING

When performing a hi-pot or dielectric test on the power section, DISCONNECT the control panel plugs from the microprocessor to avoid potential damage.

GE Zenith Controls

Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

5

Installation (cont’d)

DANGER

HAZARDOUS VOLTAGE

(Can Cause Severe Injury or Death)

Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.

Control Connections

Figure 5

Engine Start

Connections

Input/Output Connectors to I/O Modules

To Power

Panel

Clock Program

Backup Battery

Remove protective strip to enable clock functions

Network Connector

To R/T Box

A complete information package is furnished with each transfer switch including a complete connection diagram and schematic which details all necessary control circuit field connections.

The engine start control wires connect to the engine start relay terminals located to the left

of the microprocessor. Figure 5 shows the location of these terminals.

The terminals are clearly identified by a label on the microcontroller backplate. In the case of manual transfer switches, or in other applications not requiring the microprocessor, clearly marked terminal blocks are provided in the upper left corner of the control panel for the engine start control wires.

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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

GE Zenith Controls

Entelli-Switch 250 Controller

Entelli-Switch 250 Controller

Consists of two major assemblies:

I.The Microprocessor contains the following:

I/O Interface

A. Entelli-Switch 250 Board - Customer Input and Output (I/O) for system interface. Located on the left hand side of the back of the unit (see figure 6)

1.I/O accessories that can be found here are:

a.Engine start relay P output

b.Pre-Signal to transfer T3, W3 and UMD output (optional)

c.Transfer Inhibit Q3 and Q7 input (optional)

d.Remote test Q2 input (optional)

e.Network interface ZNET input/output (optional)

B.LCD and Keypad located on the exterior of the door (see figure 7)

1.User accessibility to the following:

a.LED indication of source availability

b.LED indication of transfer switch position

c.LCD screen indicates:

(1)timer count down (numeric)

(2)event reporting (text)

d.Keypad provides user interface to:

[in conjunction with LCD screen]

(1)Setting sensors and timers

(2)Configuring logic accessories

II.The Controls Power Supply (CPS)

Contains transformers which drop line voltage to control level for controller input and SCR inputs (see figure 6).

Engine Start Relay P

Entelli-Switch 250

Board

Battery Strip

and

Access

Code Label

CPS

Figure 6

S 1 O K 2 1 : 5 6

M O N 2 3 A P R 2 0 0 2 M O R E T E S T

Figure 7

GE Zenith Controls

Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

7

Entelli-Switch 250 Controller (cont’d)

LCD & Keypad

These options are accessible through the LCD and keypad (see figure below). To become familiar with the options loaded into a particular unit, scrolling through the SET and CFG menu will show the descriptions of the options (see pages 17-18). These menus are the very same menus that are used to access the setting and/or configuration of these options. The SET (setting) menu is primarily used to show or change, time and voltage settings. The CFG menu is primarily used to turn an option on or off. When scrolling through these menus, no changes can be made without entry of the access code.

The factory set six-digit access code is located on a white label on the back of the unit (see figure 10 pgs. 17-19).

The Entelli-Switch 250 has many logic options. Each controller is downloaded with options at the time of manufacture. The collection of options that any one controller has is specified at the time of order placement. The following pages include all the options that can reside in the controller. Not all units include all options.

Source 1 LED (Green) indicates Source 1 is acceptable for use

Source 1 Position LED (Green) indicates Power Panel (ATS) is closed to Source 1 position

Source 2 Position LED (Red) indicates Power Panel (ATS) is closed to Source 2 position

Source 2 (Red) indicates Source 2 is acceptable for use

LCD Screen

 

 

 

S1

OK

* E *

Current Time,

 

 

 

 

 

01: 50

 

Day and

 

 

FRI 31 MAY 2003

 

Date of Display

 

 

MORE CFG

TEST

SET

 

Menus (MORE, CFG, TEST)

Entelli-Switch 250

Exercise Event "Impending"

SET Menu

Keypad

#4 or the word

on the LCD above the key. The word above the key changes depending on which screen is being displayed.

#1 or the word

on the LCD above the key. The word above the key changes depending on which screen is being displayed.

#2 or the word

on the LCD above the key. The word above the key changes depending on which screen is being displayed.

#3 or the word

on the LCD above the key. The word above the key changes depending on which screen is being displayed.

Figure 8

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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

GE Zenith Controls

User Setting for Voltage & Frequency

Standard 3-Phase Sensing on 3 and 4 Pole Units

Source 1

Under Voltage "Restore"

Factory Default: 90%

This adjustment determines the minimum acceptable voltage required to transfer to Source 1.

Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).

Once satisfied, the T timer will begin timing to transfer to Source 1.

Under Voltage "Fail"

Factory Default: 80%

This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, P timer begins timing to signal Source 2 Generator to start.

Under Frequency "Restore"

Factory Default: 95%

This adjustment determines the minimum acceptable frequency required to transfer to Source 1.

Adjust via the SET menu. Range is 90% to 100% in 1% increments (see page 18).

Once satisfied, the T timer will begin timing to transfer to Source 1.

Under Frequency "Fail"

Factory Default: 90%, (5 seconds minimum).

This adjustment determines the low frequency threshold. Adjust via the SET menu. Range is 88% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once satisfied, the T timer will begin timing to transfer to Source 1.

Over Frequency "Restore"

Factory Default: 102%

This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re-transfer to Source 1.

Adjust via the SET menu. Range is 102% to 104% in 1% increments (see page 18). “Restore” must be a minimum of 1% below “Fail” setting.

Over Frequency "Fail"

Factory Default: 105%

This adjustment determines the maximum acceptable Over Frequency.

Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18).Once exceeded, the P timer begins timing to signal the generator to start.

Source 2

Under Voltage "Restore"

Factory Default: 90%

This adjustment determines the minimum acceptable voltage required to transfer to Source 2.

Adjust via the SET menu. Range is 85% to 100% in 1% increments (see page 18).

Once satisfied, the W timer will begin timing to transfer to Source 2.

Under Voltage "Fail"

Factory Default: 80%

This adjustment determines the low voltage threshold. Adjust via the SET menu. Range is 75% to 98% in 1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once voltage falls below threshold, T timer will be bypassed to expedite the transfer to Source 1.

Over Voltage "Fail"

Factory Default: 110%

This adjustment determines the maximum acceptable Over Voltage. Adjust via the SET menu. Range is 105% to 110% in 1% increments (see page 18). Once exceeded, the T timer will be bypassed to expedite the transfer to Source 1.

Over Voltage "Restore"

Factory Default: 105%

This adjustment determines the minimum acceptable Over Voltage threshold at which the transfer switch is allowed to transfer to Source 2. Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18). “Restore” must be a minimum of

2% below “Fail” setting.

Under Frequency "Restore"

Factory Default: 95%

This adjustment determines the minimum acceptable frequency required to transfer to Source 2.

Adjust via the SET menu. Range is 90% to 100% in 1% increments (see page 18).

Once satisfied, the W timer will begin timing to transfer to Source 2.

Under Frequency "Fail"

Factory Default: 90%, (5 seconds minimum).

This adjustment determines the low frequency threshold. Adjust via the SET menu. Range is 88% to 98% in

1% increments (see page 18).

"Fail" must be a minimum of 2 % below "Restore" setting. Once satisfied, the W timer will begin timing to transfer to Source 2.

Over Frequency "Fail"

Factory Default: 105%

This adjustment determines the maximum acceptable Over Frequency. Adjust via the SET menu. Range is 103% to 105% in 1% increments (see page 18). Once exceeded, the T timer will be bypassed to expedite the transfer to Source 1.

Over Frequency "Restore"

Factory Default: 102%

This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re-transfer to Source 2. Adjust via the SET menu. Range is 102% to 104% in 1% increments

(see page 18). “Restore” must be a minimum of 1% below “Fail” setting.

GE Zenith Controls

Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

9

GE Industrial Solutions Entelli-Switch 250 User Manual

Accessory Group Packages

Table 2

Accessories

 

 

Group Packages

 

 

STDS

EXES

CONS

SENS

SPES

PSGS

 

6P

 

 

 

 

 

 

A1

 

 

 

 

 

 

A1E

 

 

 

 

 

 

A3

 

2

2

2

2

3

A4

 

2

2

2

2

3

Calibrate

 

 

 

 

 

 

CDT

 

 

 

 

 

 

CDP

 

 

 

 

 

 

**DS

 

 

 

 

 

 

*DT

 

 

 

 

 

 

*DW

 

 

 

 

 

 

E

 

 

 

 

 

 

EL/P

 

 

 

 

 

 

K/P

 

 

 

 

 

 

L1

 

 

 

 

 

 

L2

 

 

 

 

 

 

L3

 

 

 

 

 

 

L4

 

 

 

 

 

 

*LN

 

 

 

 

 

 

P1

 

 

 

 

 

 

Q2

 

 

 

 

 

 

Q3

 

 

 

 

 

 

Q7

 

 

 

 

 

 

R1-1

 

 

 

 

 

 

R1-3

 

 

 

 

 

 

R15

 

 

 

 

 

 

*R15D

 

 

 

 

 

 

R16

 

 

 

 

 

 

R50

 

 

 

 

 

 

S5P

 

 

 

 

 

 

S12P

 

 

 

 

 

 

S13P

 

 

 

 

 

 

T

 

 

 

 

 

 

T3/W3

2

2

2

2

2

2

U

 

 

 

 

 

 

UMD

2

2

2

2

2

2

VI

 

 

 

 

 

 

W

YEN

Standard Accessory included in the group package.

Optional Accessory not included but can be added to group package. Optional Accessory. Can not be used with accessory having the same symbol. N/A

22 Denotes an Accessory with 2 circuits as a standard. 3 Denotes an Accessory with 3 circuits as a standard.

*Delayed Transition Units Only.

**Optional for 40-400 Amp

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Entelli-Switch 250 Operation and Maintenance Manual (71R-2000A)

GE Zenith Controls

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