The contents of this manual are the property of GE Multilin Inc. This documentation is
f
urnished on license and may not be reproduced in whole or in part without the permission
of GE Multilin. The content of this manual is for informational use only and is subject to
change without notice.
Part number: 1601-0450-A7 (December 2016)
Note
May contain components with FCC ID: XF6-RS9110N1122
and IC ID: 8407A-RS9110N1122.
Power Supply............................................................................................................................................ 1 - 27
Voltage Inputs..........................................................................................................................................2 - 21
Control Power........................................................................................................................................... 2 - 22
Working with Graphical Display Pages........................................................................................... 3 - 3
Single Line Diagram.................................................................................................................................3 - 6
LED Status Indicators .............................................................................................................................. 3 - 7
Home Screen Icons.................................................................................................................................. 3 - 8
Out of Service............................................................................................................................................3 - 14
Connecting to the Relay ......................................................................................................................3 - 21
Working with Setpoints & Setpoints Files....................................................................................3 - 22
Engaging a Device..................................................................................................................................3 - 22
Using Setpoints Files..............................................................................................................................3 - 24
Common Setpoints................................................................................................................................... 4 - 3
USB ................................................................................................................................................................4 - 31
Current Sensing....................................................................................................................................... 4 - 63
Voltage Sensing ...................................................................................................................................... 4 - 64
Power System .......................................................................................................................................... 4 - 65
Analog Outputs .....................................................................................................................................4 - 101
Motor Elements .....................................................................................................................................4 - 105
Current Unbalance..............................................................................................................................4 - 134
Mechanical Jam ...................................................................................................................................4 - 139
Loss of Excitation.................................................................................................................................4 - 145
Short Circuit............................................................................................................................................4 - 153
Current Elements ................................................................................................................................. 4 - 172
Inverse Time Overcurrent Curves.................................................................................................4 - 172
Percent of Load-To-Trip....................................................................................................................4 - 180
Phase Time Overcurrent Protection............................................................................................4 - 180
Voltage Elements .................................................................................................................................4 - 207
Volts per Hertz.......................................................................................................................................4 - 228
Impedance Elements ......................................................................................................................... 4 - 234
Power Elements ....................................................................................................................................4 - 240
Reactive Power .....................................................................................................................................4 - 246
Frequency Elements ...........................................................................................................................4 - 249
Breaker Health ......................................................................................................................................4 - 270
Power Factor..........................................................................................................................................4 - 284
Digital Counters ....................................................................................................................................4 - 300
RTD Temperature .................................................................................................................................4 - 312
Test LEDs ..................................................................................................................................................4 - 374
GOOSE Rx and Tx.......................................................................................................................................5 - 7
Information .......................................................................................................................................5 - 10
Main CPU .................................................................................................................................................... 5 - 10
Comms CPU .............................................................................................................................................. 5 - 10
Device Status ...................................................................................................................................5 - 12
Motor ......................................................................................................................................................6 - 5
Percent Differential Current ................................................................................................................. 6 - 5
Motor Load................................................................................................................................................... 6 - 5
Short Circuit................................................................................................................................................. 6 - 7
Frequency .........................................................................................................................................6 - 11
Energy .................................................................................................................................................6 - 15
Power Factor....................................................................................................................................6 - 16
Current Demand 1.........................................................................................................................6 - 16
Power Demand...............................................................................................................................6 - 17
Directional Power ..........................................................................................................................6 - 17
Data Logger.........................................................................................................................................7 - 2
Motor Start Records ........................................................................................................................7 - 3
Motor Start Statistics.......................................................................................................................7 - 4
Revision history................................................................................................................................. B - 1
Major Updates ............................................................................................................................................B - 2
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUALVII
VIII869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
GE
Grid Solutions
869 Motor Protection System
Chapter 1: Introduction
Introduction
The Multilin 869 relay is a microprocessor-based unit intended for the management and
primary protection of medium and large sized motors. Base relay models provide thermal
overload and overcurrent protection plus a number of current and voltage based backup
functions.
Overview
The relay features an enhanced thermal model with custom curves, current unbalance
biasing, voltage dependent curves and running and stopped exponential cooling curves.
An optional RTD module allows for the thermal model RTD bias function. Motor start and
supervision functions include thermal inhibit, maximum starting rate, time between starts,
restart delay, acceleration time, and emergency restart. Mechanical jam, current
unbalance elements and VFD application support are also included as basic functions.
Stator differential, sensitive directional power and phase/neutral directional elements are
more advanced features.
These relays contain many innovative features. To meet diverse utility standards and
indus
specific user needs. This flexibility will naturally make a piece of equipment difficult to
learn. To aid new users in getting basic protection operating quickly, setpoints are set to
typical default values and advanced features are disabled. These settings can be
reprogrammed at any time.
Programming can be accomplished with the front panel keys and display. Due to the
numer
programming and provide a more intuitive interface, setpoints can be entered with a PC
running the EnerVista 8 Setup software provided with the relay. Even with minimal
computer knowledge, this menu-driven software provides easy access to all front panel
functions. Actual values and setpoints can be displayed, altered, stored, and printed. If
settings are stored in a setpoint file, they can be downloaded at any time to the front panel
program port of the relay via a computer cable connected to the serial port of any
personal computer.
try requirements, these features have the flexibility to be programmed to meet
ous settings, this manual method can be somewhat laborious. To simplify
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL1–1
DESCRIPTION OF THE 869 MOTOR PROTECTION SYSTEMCHAPTER 1: INTRODUCTION
A summary of the available functions and a single-line diagram of protection and control
features is shown below. For a complete understanding of each feature operation, refer to
Chapter 4: Setpoints. The logic diagrams include a reference to every setpoint related to a
feature and show all logic signals passed between individual features. Information related
to the selection of settings for each setpoint is also provided.
Description of the 869 Motor Protection System
CPU
Relay functions are controlled by two pr
microprocessor that measures all analog signals and digital inputs and controls all output
relays, and a Freescale MPC8358 32-bit microprocessor that controls all the advanced
Ethernet communication protocols.
Analog Input and Waveform Capture
Magnetic transformers are used to scale-down the incoming analog signals from the
sour
ce instrument transformers. The analog signals are then passed through a 11.5 k Hz
low pass analog anti-aliasing filter. All signals are then simultaneously captured by sample
and hold buffers to ensure there are no phase shifts. The signals are converted to digital
values by a 16-bit A/D converter before finally being passed on to the CPU for analysis.
The 'raw' samples are scaled in software, then placed into the waveform capture buffer,
thus em
the EnerVista 8 Series Setup software for display and diagnostics.
Frequency
Frequency measurement is accomplished by m
of the composite signal of three-phase bus voltages, line voltage or three-phase currents.
The signals are passed through a low pass filter to prevent false zero crossings. Frequency
tracking utilizes the measured frequency to set the sampling rate for current and voltage
which results in better accuracy for the Discrete Fourier Transform (DFT) algorithm for offnominal frequencies.
The main frequency tracking source uses three-phase bus voltages. The frequency
track
three-phase currents signal if the frequency detected from the three-phase voltage inputs
is declared invalid. The switching will not be performed if the frequency from the
alternative reference signal is detected invalid. Upon detecting valid frequency on the
main source, the tracking will be switched back to the main source. If a stable frequency
signal is not available from all sources, then the tracking frequency defaults to the nominal
system frequency.
Phasors, Transients, and Harmonics
All waveforms are processed eight times every cycle through a DC decaying removal filter
and a Disc
and all harmonics removed. This results in an overcurrent relay that is extremely secure
and reliable and one that will not overreach.
Processing of AC Current Inputs
The DC Decaying Removal Filter is a short window digital filter, which removes the DC
decaying
This is done for all current signals used for overcurrent protection; voltage signals use the
same DC Decaying Removal Filter. This filter ensures no overreach of the overcurrent
protection.
The Discrete Fourier Transform (DFT) uses exactly one cycle of samples to calculate a
phasor qua
components are removed. All subsequent calculations (e.g. power, etc.) are based upon the
ulating a digital fault recorder. The waveforms can be retrieved from the relay via
ing is switched automatically by an algorithm to the alternative reference source, i.e.,
rete Fourier Transform (DFT). The resulting phasors have fault current transients
component from the asymmetrical current present at the moment a fault occurs.
ntity which represents the signal at the fundamental frequency; all harmonic
ocessors: a Freescale MPC5125 32-bit
easuring the time between zero crossings
1–2869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTIONDESCRIPTION OF THE 869 MOTOR PROTECTION SYSTEM
892825A3.CDR
Phase CT
RTD
27P
59P
59N
59_2
VTFF
81U
81O
4
87S
METERING
TRANSIENT RECORDER
EVENT RECORDER
FAULT REPORT
TRIP
52
CLOSE
MONITORING
50BF
51P
50P
67P
50_2
50LR
49
2
212
22
BUS
Breaker
32
2
869
Motor Protection System
Neutral CT
M
50G/N
51G/N
67N
86
55
START
3
3
Ground CT
1
Differential
core
balance CT
3
37
47
12
50G
51G
Internal Summation Percent Differential
Core Balance Percent Differential
81R
2
40
40Q
78
24
current and voltage phasors, such that the resulting values have no harmonic
components. RMS (root mean square) values are calculated from one cycle of samples
prior to filtering.
Protection Elements
All voltage, current and frequency protection elements are processed eight times every
cycle to determine if a pickup has occurred or a timer has expired. The voltage and current
protection elements use RMS current/voltage, or the magnitude of the phasor.
Figure 1-1: Single Line Diagram
Table 1-1: ANSI Device Numbers and Functions
ANSI DeviceDescription
12/14Over Speed Protection/ Under Speed Protection
24Volts Per Hertz
27P (2)Phase Undervoltage
32 (2)Directional Power
37Undercurrent
37PUnderpower
40Loss of Excitation
40QReactive Power
46Current Unbalance
47Voltage Reversal
49Thermal Model
50BFBreaker Failure
50GGround Instantaneous Overcurrent
50SGGround Fault
50N (2)Neutral Instantaneous Overcurrent
50P (2)Phase Instantaneous Overcurrent
50_2Negative Sequence Instantaneous Overcurrent
51GGround Time Overcurrent
51NNeutral Time Overcurrent
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL1–3
DESCRIPTION OF THE 869 MOTOR PROTECTION SYSTEMCHAPTER 1: INTRODUCTION
Breaker Arcing Current (I
Switching Device Control
Breaker Health
Output Relays
Demand
Digital Counters
Event Recorder
Fault Report
FlexLogic Equations
IEC 61850 Communications
Metering: current, voltage, power, PF, energy, frequency, harmonics, THD
Modbus User Map
Non-volatile Latches
Setpoint Groups (6)
Stator Inter-Turn Fault
Trip Bus (6)
Transient Recorder (Oscillography)
Trip and Close Coil Monitoring
User-programmable LEDs
User-programmable Pushbuttons
Virtual Inputs (32)
Virtual Outputs (32)
Mechanical Jam
Overload Alarm
Short Circuit
t)
1–4869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTIONDESCRIPTION OF THE 869 MOTOR PROTECTION SYSTEM
Level 1Level 2
Level 1Level 2
Setpoints
Device
System
Inputs
Outputs
Protection
Monitoring
Control
FlexLogic
S
tatus
Breakers
S ches
Contact Inputs
Output Relays
Virtual Inputs
Virtual Outputs
Targets
Motor
Metering
Records
Events
Transients
Motor Start Records
Breakers
Dig Counters
Clear Records
Currents
oltages
Frequenc
Harmonics
Power
Energy
V
y
RTDs
Data Logger
Fault Reports
Motor Start Statistics
Current Demand
Power Demand
Motor Learned Data
Directional Power
Arc Flash
Arc Flash
Testing
PTP Status
Clock
Device Status
Information
Communications
Flex States
Last Trip Data
Motor
Power Factor
Analog Inputs
RTD Maximums
FlexElements
Description
Acceleration Time
Phase Reversal
Broken Rotor Bar
Reduced Voltage Starting
RTD Temperature
Motor Start Records
Motor Start Statistics
Motor Learned Data
Motor Health Report
Data Logger
Figure 1-2: Main Menu Hierarchy
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL1–5
SECURITY OVERVIEWCHAPTER 1: INTRODUCTION
Security Overview
The following security features are available:
BASIC SECURITY
The basic security feature is present in the default offering of the 869 relay. The
FASTPATH:
869 introduces the notion of roles for different lev
names with associated passwords stored on the device. The following roles are available
at present: Administrator, Operator, Factory and Observer, with a fixed permission
structure for each one. Note that the Factory role is not available for users, but strictly used
in the manufacturing process.
The 869 can still use the Setpoint access switch feat
done only by an Administrator. Setpoint access is controlled by a keyed switch to offer
some minimal notion of security.
CYBERSENTRY
The CyberSentry Embedded Security feature is a software option that provides advanced
security ser
vices. When the software option is purchased, the Basic Security is
automatically disabled.
CyberSentry provides security through the following features:
vice (RADIUS) client that is centrally managed, enables user attribution, and
uses secure standards based strong cryptography for authentication and credential
protection.
•A Role-Based Access Control (RBAC) system that provides a permission model that
ows access to 869 device operations and configurations based on specific roles
all
and ind
ividual user accounts configured on the AAA server. At present the defined
roles are: Administrator, Operator and Observer.
•Strong encryption of all access and configuration network messages between the
EnerV
ista software and 869 devices using the Secure Shell (SSH) protocol, the
Ad
vanced Encryption Standard (AES), and 128-bit keys in Galois Counter Mode (GCM)
as specified in the U.S. National Security Agency Suite B extension for SSH and
approved by the National Institute of Standards and Technology (NIST) FIPS-140-2
standards for cryptographic systems.
•Security event reporting through the Syslog protocol for supporting Security
Informa
tion Event Management (SIEM) systems for centralized cyber security
monitoring.
There are two types of authentication supported by CyberSentry that can be used to
acc
ess the 869 device:
•Device Authentication – in which case the authentication is performed on the
869 device itself, using the predefined roles as users (No RADIUS involvement).
–869 authentication using local roles may be done either from the front panel or
ough EnerVista.
thr
•Server Authentication - in which case the authentication is done on a RADIUS server,
using
individual user accounts defined on the server. When the user accounts are
created, they are assigned to one of the predefined roles recognized by the 869
–869 authentication using RADIUS server may be done only through EnerVista.
WiFi and USB do not currently support CyberSentry security. For this reason WiFi is
disabled by default if the CyberSentry option is purchased. The user can enable WiFi, but
be aware that doing so violates the security and compliance model that CyberSentry is
supposed to provide.
els of authority. Roles are used as login
ure, but enabling the feature can be
1–6869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION869 ORDER CODES
When both 869 device and server authentication are enabled, the 869 automatically
directs authentication requests to the 869 device or the respective RADIUS server, based
on user names. If
the user ID credential does not match one of the device local accounts,
the 869 automatically forwards the request to a RADIUS server when one is provided. If a
R
ADIUS server is provided, but is unreachable over the network, server authentication
requests are denied. In this situation, use local 869 device accounts to gain access to the
869 system.
USER ROLES
User Access Levels are used to grant varying perm
issions to specific user roles. User roles
are used by both Basic Security and CyberSentry.
The following user roles are supported:
•Administrat
or: The Administrator role has complete read and write access to all
settings and commands. The role does not allow concurrent access. The Administrator
role also has an operand to indicate when it is logged on.
•Operat
or: The Operator role is present to facilitate operational actions that may be
programmed and assigned to buttons on the front panel. The Operator has read/write
access to all settings under the command menu/section. The Operator can view
settings from EnerVista or the front panel but does not have the ability to change any
settings. This role is not a concurrent role.
•Obser
ver: The Observer role has read-only access to all 869 settings. This role allows
concurrent access. The Observer is the default role if no authentication has been done
to the device. This role can download settings files and records from the device.
•F
actory: This is an internal non-user accessible role used for manufacturing
diagnostics. The ability to enable or disable this role is a security setting that the
Administrator controls.
GENERAL RULES FOR USER ROLES WITH CYBERSENTRY
1.The only concurrent role is Observer. If the user is logged in through serial, front panel,
or over the network, that counts as the role being logged in for concurrency reasons.
2.Both EnerVista and the front panel provide a one-step logoff. For the front panel, the
root menu has a logoff command. From EnerVista right-clicking on a device and
providing a logoff function from the context menu is sufficient.
3.The EnerVista Login Screen has “User Name:” and “Password:” fields for the default
remote (Radius) authentication, but when a “Local Authentication” checkbox is
selected the “User Name:” field changes to a drop down menu where the user can
select one of the predefined roles on the 869.
869 Order Codes
NOTE:
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL1–7
Support of some of the features described in the "Setpoints" section are order code
dependent. The 8 Series unit is ordered with a number of required and optional modules.
Each of these modules can be supplied in a number of configurations specified at the time
of ordering.
The information to specify an 869 relay is provided in the following Order Code figure:
869 ORDER CODESCHAPTER 1: INTRODUCTION
892800B8.PDF
869 E ** ** ** H * * A * N G * * * * * * * * * N
||||||||||||||||Advanced Voltage Monitoring & Protection: Standard Voltage
Monitoring & Protection +32, 55, 59_2, 78, 81R
ControlB | ||||||
Basic control: Setpoint Group Control, Breaker/Contactor Control, Virtual
Inputs, Trip Bus
F||||||| Standard control: Basic control + FlexLogic, 50BF
MonitoringB||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Basic monitoring: Motor Health Report, Motor Start Report, Motor
Learned Data, Data Logger, Breakers Coil Monitoring, Breaker Arcing,
Harmonics, THD, Demand
C
||||||||||||Standard monitoring: Basic monitoring + Breaker Health Report, Broken
Rotor Bar
A | | | | | | Advanced: Standard + Harmonic Detection, Stator Inter-Turn Fault
S | | |ST, Multi-mode 1310 nm
C | | |RJ45, Copper 10/100M
Wireless CommunicationN | |None
W| | WiFi 802.11
SecurityB |Basic security
A |Advanced security: CyberSentry Level 1
Future OptionN Not Available
Figure 1-3: 869 Order Codes
1–8869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTIONSPECIFICATIONS
FASTPATH:
Harsh Environment Coating is a standard feature on all 8 Series units.
Advanced security is only available with advanced communications (1E, 1P, 2A, 2E). When
the advanced communications option is selected, the Ethernet port on the main CPU is
disabled.
The “A” option on Slot H is only available if the “L” option is selected on Slot G.
Specifications
To obtain the total operating time, i.e. from the presence of a trip condition to initiation of a
trip, add 8 ms output relay time to the operate times listed below.
ANSI Extremely/Very/Normally/Moderately Inverse;
Definite T ime, IEC A/B/C and Short Inverse;
IAC Extremely/Very/Inverse/Short Inverse;
FlexCurve A/B/C/D, I
2
t, I4t
Curve Multiplier: ..................................................0.05 to 600.00 in steps of 0.01
Current (for Phase IOC only): .........................Phasor or RMS
Current (for Neutral/Ground IOC only):..... Fundamental Phasor Magnitude
Pickup Level: .........................................................0.050 to 30.000 x CT in steps of 0.001 x CT
Dropout Level:......................................................97 to 98% of Pickup
Level Accuracy:.................................................... For 0.1 to 2.0 x CT: ±0.5% of reading or ±0.4% of rated,
whichever is greater
For > 2.0 x CT: ±1.5% of reading
Operate Time: ...................................................... <12 ms typical at 3 × Pickup at 60 Hz (Phase/Ground IOC)
<16 ms typical at 3 × Pickup at 60 Hz (Neutral IOC)
<15 ms typical at 3 × Pickup at 50 Hz (Phase/Ground IOC)
<20 ms typical at 3 × Pickup at 50 Hz (Neutral IOC)
NOTE:
Operating time specifications given above are applicable when RMS inputs are used.
Typical times are average operate times over multiple test cases.
Timer Accuracy: ..................................................±3% of delay setting or ± ¼ cycle (whichever is greater) from
pickup to operate
1–12869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
Comparison direction:......................................Over, Under
Pickup Level: .........................................................-30.000 to 30.000 pu in steps of 0.001 pu
Hysteresis:.............................................................. 0.1 to 50.0% in steps of 0.1%
Delta dt:...................................................................40 msec to 45 days
Pickup and dropout delays:...........................0.000 to 6000.000 s in steps of 0.001 s
(NOTE 1) When the setpoint “Motor Load Filter Interval” is programmed as non-zero, it
might increase the trip/alarm times by 16.7 ms (or 20 ms at 50 Hz) for each additional cycle
in the filter interval for the following protection elements: Acceleration Time, Current
Unbalance, Mechanical Jam, Overload Alarm, Thermal Model, Undercurent, Power Factor,
and Underpower.
1–16869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTIONSPECIFICATIONS
Control
MAXIMUM STARTING RATE
Monitored Time Interval:.................................1 to 300 minutes in steps of 1
Maximum Number of Starts:.........................1 to 16 starts in steps of 1
Timer Accuracy:...................................................±2s or ±1% of total time (whichever is greater)
TIME BETWEEN STARTS
Time Between Starts:........................................0 to 300 minutes in steps of 1
Timer Accuracy:...................................................±2s or ±1% of total time (whichever is greater)
RESTART DELAY
Restart Delay: .......................................................0 to 65000 seconds in steps of 1
Timer Accuracy:...................................................±2s or ±1% of total time (whichever is greater)
REDUCED VOLTAGE START
Mode:........................................................................Current Only, Current and Timer, Current or Timer
Start Current Level: ............................................0.25 to 3.00 of FLA, in steps of 0.01
Start Timer:............................................................1.0 to 600.0 s in steps of 0.1
TRIP BUS
Number of Elements: ........................................6
Number of Inputs:...............................................16
Pickup Time Delay: .............................................0.000 to 6000.000 s in steps of 0.001 s
Dropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 s
Operate Time:.......................................................< 2 ms at 60 Hz
Timer Accuracy:...................................................± 3% of delay time or ± ¼ cycle (whichever is greater) from
Number of records:............................................5
Content:...................................................................Start Date/Time, Start Acceleration Time, Start Effective
Current, Start Peak Current
Number of records:............................................Non-volatile memory
MOTOR START RECORDS
Length:.....................................................................6 records, each containing a total of 60 seconds of motor
starting data
Trigger:.....................................................................Motor starting status
Trigger Position:...................................................1 second pre-trigger duration
Sample Rate:.........................................................1 sample/200 ms
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL1–19
SPECIFICATIONSCHAPTER 1: INTRODUCTION
MOTOR LEARNED DATA
Number of records:............................................ 250
Content:................................................................... Learned/last acceleration time, learned/last starting current,
learned/last start TCU, learned average load, learned
average real power, learned average reactive power, learned
average power factor, average run time (days/hours/
minutes), maximum speed, analog input minimum/
maximum values, RTD maximum temperature
D
ata Storage: ....................................................... .LDR File, CSV Format
Learned acceleration time accuracy: ....... 3%
Learned starting current accuracy:...........1%
Learned average motor load accuracy:..1%
Learned average power accuracy:............1%
TRANSIENT RECORDER
Default AC Channels: ........................................ 8 currents + 4 voltages
Configurable Channels: ...................................16 analog and 32 digital channels