GE Multilin 850 User manual

Instruction manual
850 version: 1.6x
GE publication code: 1601-0298-A9 (GEK-119591H)
*1601-0298-A9*
850
Feeder Protection System
Feeder protection and control
GE
Grid Solutions

© 2016 GE Multilin Incorporated. All rights reserved.
GE Multilin 850 Feeder Protection System instruction manual for revision 1.6x.
850 Feeder Protection System, EnerVista, EnerVista Launchpad, and EnerVista 8 Series
Setup software are registered trademarks of GE Multilin Inc.
The contents of this manual are the property of GE Multilin Inc. This documentation is
furnished 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: 1601-0298-A9 (March 2016)
Note May contain components with FCC ID: XF6-RS9110N1122
and IC ID: 8407A-RS9110N1122.

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL I
Table of Contents
1.INTRODUCTION Overview .............................................................................................................................................. 1 - 1
Description of the 850 Feeder Protection System............................................................ 1 - 2
Security Overview............................................................................................................................ 1 - 5
850 Order Codes............................................................................................................................... 1 - 7
Specifications..................................................................................................................................... 1 - 9
Protection......................................................................................................................................................1 - 9
Control......................................................................................................................................................... 1 - 18
Monitoring.................................................................................................................................................. 1 - 19
Recording................................................................................................................................................... 1 - 21
User-Programmable Elements ........................................................................................................ 1 - 22
Metering...................................................................................................................................................... 1 - 23
Inputs ........................................................................................................................................................... 1 - 25
Outputs........................................................................................................................................................ 1 - 27
Power Supply............................................................................................................................................ 1 - 28
Communications .................................................................................................................................... 1 - 29
Testing & Certification.......................................................................................................................... 1 - 30
Physical ....................................................................................................................................................... 1 - 31
Environmental.......................................................................................................................................... 1 - 31
Cautions and Warnings ..............................................................................................................1 - 32
Safety words and definitions ............................................................................................................ 1 - 32
General Cautions and Warnings..................................................................................................... 1 - 32
Must-read Information................................................................................................................1 - 35
For Further Assistance.................................................................................................................1 - 36
2.INSTALLATION Mechanical Installation................................................................................................................. 2 - 1
Product Identification..............................................................................................................................2 - 1
Dimensions...................................................................................................................................................2 - 2
Mounting .......................................................................................................................................................2 - 2
Standard Panel Mount.............................................................................................................................2 - 3
Draw-out Unit Withdrawal and Insertion ......................................................................................2 - 4
Removable Power Supply......................................................................................................................2 - 5
Removable Magnetic Module..............................................................................................................2 - 7
Arc Flash Sensor ........................................................................................................................................2 - 8
Electrical Installation ...................................................................................................................... 2 - 8
Typical Wiring Diagram ..........................................................................................................................2 - 8
Terminal Identification......................................................................................................................... 2 - 10
Wire Size......................................................................................................................................................2 - 14
Phase Sequence and Transformer Polarity ............................................................................... 2 - 15
Ground CT Inputs.................................................................................................................................... 2 - 15
Voltage Inputs.......................................................................................................................................... 2 - 17
Restricted Earth Fault Inputs ............................................................................................................ 2 - 17
Zero-Sequence CT Installation......................................................................................................... 2 - 18
Control Power........................................................................................................................................... 2 - 19
Contact Inputs ......................................................................................................................................... 2 - 19
Output Relays........................................................................................................................................... 2 - 21
Serial Communications ....................................................................................................................... 2 - 23
IRIG-B ........................................................................................................................................................... 2 - 24
3.INTERFACES Front Control Panel Interface..................................................................................................... 3 - 2
850 Graphical Display Pages ...............................................................................................................3 - 2

II 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Working with Graphical Display Pages........................................................................................... 3 - 4
Single Line Diagram................................................................................................................................. 3 - 7
LED Status Indicators.............................................................................................................................. 3 - 8
Home Screen Icons................................................................................................................................3 - 10
Relay Messages .......................................................................................................................................3 - 11
Target Messages.....................................................................................................................................3 - 11
Self-test Errors..........................................................................................................................................3 - 12
Out of Service............................................................................................................................................3 - 15
Flash Messages........................................................................................................................................3 - 15
Label Removal..........................................................................................................................................3 - 15
Software Interface ........................................................................................................................3 - 17
EnerVista 8 Series Setup Software..................................................................................................3 - 17
Hardware & Software Requirements ............................................................................................3 - 17
Installing the EnerVista 8 Series Setup Software.....................................................................3 - 17
Connecting EnerVista 8 Series Setup software to the Relay ..............................................3 - 20
Using the Quick Connect Feature ...................................................................................................3 - 20
Configuring Ethernet Communications........................................................................................3 - 21
Connecting to the Relay ......................................................................................................................3 - 23
Working with Setpoints & Setpoints Files ....................................................................................3 - 24
Engaging a Device..................................................................................................................................3 - 24
Entering Setpoints ..................................................................................................................................3 - 24
File Support................................................................................................................................................3 - 25
Using Setpoints Files..............................................................................................................................3 - 26
Downloading & Saving Setpoints Files..........................................................................................3 - 26
Adding Setpoints Files to the Environment.................................................................................3 - 27
Creating a New Setpoints File...........................................................................................................3 - 28
Upgrading Setpoints Files to a New Revision............................................................................3 - 29
Printing Setpoints....................................................................................................................................3 - 29
Printing Values from a Connected Device...................................................................................3 - 30
Loading Setpoints from a File ...........................................................................................................3 - 31
Quick Setup................................................................................................................................................3 - 32
Upgrading Relay Firmware ................................................................................................................3 - 34
Loading New Relay Firmware...........................................................................................................3 - 35
Advanced EnerVista 8 Series Setup Software Features .......................................................3 - 38
FlexCurve Editor.......................................................................................................................................3 - 38
Transient Recorder (Waveform Capture).....................................................................................3 - 39
Protection Summary .............................................................................................................................3 - 42
Offline Settings File Conversion........................................................................................................3 - 44
Convert SR 750/760 Files ....................................................................................................................3 - 44
Conversion Summary Report ............................................................................................................3 - 45
Results Window .......................................................................................................................................3 - 46
4.SETPOINTS Setpoints Main Menu ......................................................................................................................4 - 1
Setpoints Entry Methods........................................................................................................................ 4 - 2
Common Setpoints................................................................................................................................... 4 - 3
Logic Diagrams.......................................................................................................................................... 4 - 4
Setpoints Text Abbreviations............................................................................................................... 4 - 5
Device.....................................................................................................................................................4 - 6
Clock................................................................................................................................................................ 4 - 6
Real-time Clock.......................................................................................................................................... 4 - 6
PTP Configuration ..................................................................................................................................... 4 - 7
Clock................................................................................................................................................................ 4 - 9
SNTP Protocol ...........................................................................................................................................4 - 10
Security........................................................................................................................................................4 - 11
Basic Security............................................................................................................................................4 - 13
CyberSentry...............................................................................................................................................4 - 16
Communications.....................................................................................................................................4 - 23

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL III
RS485............................................................................................................................................................4 - 23
WiFi................................................................................................................................................................4 - 23
USB ................................................................................................................................................................4 - 26
Ethernet Ports...........................................................................................................................................4 - 27
Modbus Protocol .....................................................................................................................................4 - 28
Routing.........................................................................................................................................................4 - 37
DNP Protocol.............................................................................................................................................4 - 40
DNP / IEC104 Point Lists ......................................................................................................................4 - 42
IEC 60870-5-104 .....................................................................................................................................4 - 46
IEC 60870-5-103 .....................................................................................................................................4 - 47
IEC 61850....................................................................................................................................................4 - 48
Transient Recorder ................................................................................................................................ 4 - 51
Data Logger .............................................................................................................................................. 4 - 54
Fault Reports ............................................................................................................................................ 4 - 57
Event Data ................................................................................................................................................. 4 - 60
Flex States.................................................................................................................................................. 4 - 61
Front Panel ................................................................................................................................................ 4 - 61
Display Properties...................................................................................................................................4 - 62
Default Screens........................................................................................................................................4 - 63
Programmable LEDs..............................................................................................................................4 - 63
Programmable Pushbuttons .............................................................................................................4 - 66
Resetting..................................................................................................................................................... 4 - 71
Installation................................................................................................................................................. 4 - 71
System.................................................................................................................................................4 - 72
Current Sensing....................................................................................................................................... 4 - 72
Voltage Sensing ...................................................................................................................................... 4 - 74
Power System .......................................................................................................................................... 4 - 76
Breakers...................................................................................................................................................... 4 - 76
FlexCurves ................................................................................................................................................. 4 - 80
Inputs...................................................................................................................................................4 - 88
Contact Inputs ......................................................................................................................................... 4 - 88
Virtual Inputs ............................................................................................................................................ 4 - 92
Analog Inputs ........................................................................................................................................... 4 - 94
Remote Inputs.......................................................................................................................................... 4 - 99
Outputs ............................................................................................................................................4 - 100
Output Relays.........................................................................................................................................4 - 100
Output Relay 1 (F1) Trip..................................................................................................................... 4 - 102
Output Relay 2 (F4) programmed as Close..............................................................................4 - 104
Critical Failure Relay #8 ....................................................................................................................4 - 107
Virtual Outputs.......................................................................................................................................4 - 108
Analog Outputs .....................................................................................................................................4 - 109
Protection .......................................................................................................................................4 - 111
Current Elements..................................................................................................................................4 - 113
Inverse Time Overcurrent Curves.................................................................................................4-114
Percent of Load-To-Trip.................................................................................................................... 4 - 122
Phase Time Overcurrent Protection............................................................................................4 - 123
Phase Instantaneous Overcurrent Protection........................................................................ 4 - 127
Phase Directional Overcurrent Protection............................................................................... 4 - 130
Neutral Time Overcurrent Protection.........................................................................................4 - 134
Neutral Instantaneous Overcurrent Protection.....................................................................4 - 137
Neutral Directional Overcurrent Protection ............................................................................ 4 - 140
Ground Time Overcurrent Protection.........................................................................................4 - 146
Ground Instantaneous Overcurrent Protection..................................................................... 4 - 149
Ground Directional Overcurrent Protection ............................................................................ 4 - 151
Sensitive Ground Time Overcurrent Protection.....................................................................4 - 156
Sensitive Ground Instantaneous Overcurrent Protection................................................. 4 - 159
Sensitive Ground Directional Overcurrent Protection ........................................................ 4 - 161

IV 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Restricted Ground (Earth) Fault .....................................................................................................4 - 165
Negative Sequence Time Overcurrent Protection................................................................4 - 171
Negative Sequence Instantaneous Overcurrent Protection ...........................................4 - 174
Negative Sequence Directional Overcurrent Protection...................................................4 - 177
Broken Conductor................................................................................................................................4 - 181
Load Encroachment...........................................................................................................................4 - 184
Cable Thermal Model .........................................................................................................................4 - 187
Voltage Elements .................................................................................................................................4 - 190
Undervoltage Curves .........................................................................................................................4 - 190
Phase Undervoltage Protection....................................................................................................4 - 192
Auxiliary Undervoltage......................................................................................................................4 - 196
Phase Overvoltage Protection .......................................................................................................4 - 199
Auxiliary Overvoltage Protection.................................................................................................. 4 - 202
Neutral Overvoltage Protection .................................................................................................... 4 - 205
Negative Sequence Overvoltage Protection...........................................................................4 - 208
Power Elements....................................................................................................................................4 - 211
Directional Power.................................................................................................................................4 - 211
Wattmetric Ground Fault .................................................................................................................4 - 217
Frequency Elements...........................................................................................................................4 - 222
Fast Underfrequency .........................................................................................................................4 - 222
Underfrequency....................................................................................................................................4 - 227
Overfrequency.......................................................................................................................................4 - 230
Frequency Rate of Change..............................................................................................................4 - 234
Monitoring...................................................................................................................................... 4 - 239
Trip and Close Circuit Monitoring .................................................................................................4 - 239
Breaker Arcing Current......................................................................................................................4 - 247
Breaker Health ......................................................................................................................................4 - 250
Functions .................................................................................................................................................4 - 255
Power Factor..........................................................................................................................................4 - 255
Demand....................................................................................................................................................4 - 262
Current......................................................................................................................................................4 - 263
Real Power ..............................................................................................................................................4 - 266
Reactive Power .....................................................................................................................................4 - 269
Apparent Power....................................................................................................................................4 - 272
Pulsed Outputs......................................................................................................................................4 - 275
Digital Counters ....................................................................................................................................4 - 278
RTD Temperature.................................................................................................................................4 - 282
Harmonic Detection ...........................................................................................................................4 - 287
Control ............................................................................................................................................. 4 - 290
Setpoint Group ......................................................................................................................................4 - 290
Breaker Control.....................................................................................................................................4 - 293
Virtual Input Control ...........................................................................................................................4 - 296
Trip Bus .....................................................................................................................................................4 - 297
Breaker Failure......................................................................................................................................4 - 300
Setup..........................................................................................................................................................4 - 301
Initiate .......................................................................................................................................................4 - 304
Arc Flash Protection............................................................................................................................4 - 306
Synchrocheck ........................................................................................................................................4 - 309
Manual Close Blocking ......................................................................................................................4 - 314
Cold Load Pickup..................................................................................................................................4 - 317
Undervoltage Restoration................................................................................................................4 - 321
Underfrequency Restoration..........................................................................................................4 - 325
Bus Transfer............................................................................................................................................4 - 329
ATS Wiring Diagrams .........................................................................................................................4 - 347
Autoreclose.............................................................................................................................................4 - 351
Setup..........................................................................................................................................................4 - 353
Initiate .......................................................................................................................................................4 - 360

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL V
Shot x......................................................................................................................................................... 4 - 361
Rate Supervision................................................................................................................................... 4 - 363
Current Supervision ............................................................................................................................ 4 - 365
Zone Coordination............................................................................................................................... 4 - 368
VT Fuse Failure.......................................................................................................................................4 - 371
FlexLogic .........................................................................................................................................4 - 373
Timers ........................................................................................................................................................4 - 382
Non-volatile Latches...........................................................................................................................4 - 383
FlexLogic Equation...............................................................................................................................4 - 385
Viewing FlexLogic Graphics ............................................................................................................ 4 - 385
FlexElements...........................................................................................................................................4 - 386
Testing..............................................................................................................................................4 - 393
Simulation................................................................................................................................................4 - 394
Setup.......................................................................................................................................................... 4 - 394
Pre-Fault................................................................................................................................................... 4 - 395
Fault ........................................................................................................................................................... 4 - 396
Post-Fault ................................................................................................................................................ 4 - 397
Test LEDs ..................................................................................................................................................4 - 398
Contact Inputs .......................................................................................................................................4 - 399
Output Relays.........................................................................................................................................4 - 400
5.STATUS Breakers ............................................................................................................................................... 5 - 2
Last Trip Data..................................................................................................................................... 5 - 3
Arc Flash............................................................................................................................................... 5 - 4
Contact Inputs................................................................................................................................... 5 - 4
Output Relays .................................................................................................................................... 5 - 5
Output Relay 1 (TRIP)................................................................................................................................5 - 5
Output Relay 2 (CLOSE) ...........................................................................................................................5 - 5
Virtual Inputs...................................................................................................................................... 5 - 6
Virtual Outputs .................................................................................................................................. 5 - 7
Flex State ............................................................................................................................................. 5 - 7
Communications.............................................................................................................................. 5 - 8
GOOSE Rx and Tx.......................................................................................................................................5 - 8
Information .......................................................................................................................................5 - 10
Main CPU.................................................................................................................................................... 5 - 10
Comms CPU .............................................................................................................................................. 5 - 10
Hardware Versions................................................................................................................................ 5 - 11
Device Status ...................................................................................................................................5 - 12
Clock.....................................................................................................................................................5 - 13
PTP Status..........................................................................................................................................5 - 13
Autoreclose 1 ...................................................................................................................................5 - 14
6.METERING Summary.............................................................................................................................................. 6 - 4
Currents................................................................................................................................................ 6 - 5
Voltages................................................................................................................................................ 6 - 7
Frequency............................................................................................................................................ 6 - 8
Fast Underfrequency...................................................................................................................... 6 - 9
Harmonics 1(Harmonics 2).......................................................................................................... 6 - 9
Harmonic Detection......................................................................................................................6 - 10
Synchrocheck ..................................................................................................................................6 - 11
Power...................................................................................................................................................6 - 12
Energy..................................................................................................................................................6 - 13
Power Factor....................................................................................................................................6 - 14

VI 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Current Demand 1.........................................................................................................................6 - 14
Power Demand...............................................................................................................................6 - 15
Thermal Capacity...........................................................................................................................6 - 15
Directional Power ..........................................................................................................................6 - 16
Wattmetric Ground Fault...........................................................................................................6 - 16
Arc Flash ............................................................................................................................................ 6 - 16
RTDs .....................................................................................................................................................6 - 17
RTD Maximums...............................................................................................................................6 - 18
Analog Inputs...................................................................................................................................6 - 19
FlexElements....................................................................................................................................6 - 20
7.RECORDS Events.....................................................................................................................................................7 - 1
Transient Records.............................................................................................................................7 - 2
Fault Reports.......................................................................................................................................7 - 3
Data Logger.........................................................................................................................................7 - 4
Breakers................................................................................................................................................7 - 5
Breaker Arcing Current........................................................................................................................... 7 - 5
Breaker Health ........................................................................................................................................... 7 - 5
Digital Counters.................................................................................................................................7 - 6
Clear Records .....................................................................................................................................7 - 7
8.MAINTENANCE Environmental Health Report .....................................................................................................8 - 1
A.APPENDIX A Warranty...............................................................................................................................................A - 1
Revision history..................................................................................................................................A - 1
Major Updates............................................................................................................................................ A - 2

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–1
850 Feeder Protection System
Chapter 1: Introduction
GE
Grid Solutions
Introduction
The Mulitlin 850 relay is a microprocessor-based unit intended for the management and
primary protection of distribution feeders, as well as for the management and backup
protection of buses, transformers, and transmission lines. The 850 relay is particularly
suited to overhead feeders, where automatic reclosing is normally applied.
Overview
Each relay provides protection, control, and monitoring functions with both local and
remote human interfaces. They also display the present trip/alarm conditions, and most of
the more than 35 measured system parameters. Recording of past trip, alarm or control
events, maximum demand levels, and energy consumption is also performed.
These relays contain many innovative features. To meet diverse utility standards and
industry requirements, these features have the flexibility to be programmed to meet
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
numerous settings, this manual method can be somewhat laborious. To simplify
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.
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.

1–2 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION
Description of the 850 Feeder Protection System
CPU
Relay functions are controlled by two processors: a Freescale MPC5125 32-bit
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
source instrument transformers. The analog signals are then passed through a 11.5 kHz
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 emulating a fault recorder. The waveforms can be retrieved from the relay via the
EnerVista 8 Series Setup software for display and diagnostics.
Frequency
Frequency measurement is accomplished by measuring the time between zero crossings
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 off-
nominal frequencies.
The main frequency tracking source uses three-phase bus voltages. The frequency
tracking is switched automatically by an algorithm to the alternative reference source, i.e.,
three-phase currents signal or line voltage for the configuration of tie-breaker, 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 with a DC decaying removal filter and
a Discrete Fourier Transform (DFT). The resulting phasors have fault current transients 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 component from the asymmetrical current present at the moment a fault occurs.
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 quantity which represents the signal at the fundamental frequency; all harmonic
components are removed. All subsequent calculations (e.g. power, etc.) are based upon the
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.