850man-a5

Instruction manual850 version: 1.2x

GE publication code: 1601-0298-A5 (GEK-119591D)

*1601-0298-A5*

850Feeder Protection System

Feeder protection and control

GEDigital Energy

2014 GE Multilin Incorporated. All rights reserved.GE Multilin 850 Feeder Protection System instruction manual for revision 1.2x.850 Feeder Protection System, EnerVista, EnerVista Launchpad, and EnerVista 8 Series Setup 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-A5 (August 2014)

Note May contain components with FCC ID: XF6-RS9110N1122 and IC ID: 8407A-RS9110N1122.

Table of Contents

1.INTRODUCTION Overview .............................................................................................................................................. 1 - 1Description of the 850 Feeder Protection System............................................................ 1 - 2Security Overview ............................................................................................................................ 1 - 6850 Order Codes............................................................................................................................... 1 - 8Specifications..................................................................................................................................... 1 - 9

Protection......................................................................................................................................................1 - 9Control ......................................................................................................................................................... 1 - 16Monitoring.................................................................................................................................................. 1 - 18Recording................................................................................................................................................... 1 - 19User-Programmable Elements ........................................................................................................ 1 - 19Metering...................................................................................................................................................... 1 - 20Inputs ........................................................................................................................................................... 1 - 21Outputs........................................................................................................................................................ 1 - 22Power Supply............................................................................................................................................ 1 - 23Communications .................................................................................................................................... 1 - 23Testing & Certification.......................................................................................................................... 1 - 24Physical ....................................................................................................................................................... 1 - 25Environmental.......................................................................................................................................... 1 - 25

Cautions and Warnings ..............................................................................................................1 - 26Safety words and definitions ............................................................................................................ 1 - 26General Cautions and Warnings..................................................................................................... 1 - 26

Must-read Information ................................................................................................................1 - 27For Further Assistance.................................................................................................................1 - 28

2.INSTALLATION Mechanical Installation ................................................................................................................. 2 - 1Product Identification..............................................................................................................................2 - 1Dimensions...................................................................................................................................................2 - 1Mounting .......................................................................................................................................................2 - 2

Standard Panel Mount.............................................................................................................................2 - 3Draw-out Unit Withdrawal and Insertion ......................................................................................2 - 4Removable Power Supply......................................................................................................................2 - 5Removable Magnetic Module..............................................................................................................2 - 6

Electrical Installation ...................................................................................................................... 2 - 7Terminal Identification............................................................................................................................2 - 9

Wire Size......................................................................................................................................................2 - 13Phase Sequence and Transformer Polarity ............................................................................... 2 - 13Ground and Sensitive Ground CT Inputs ..................................................................................... 2 - 14Voltage Inputs.......................................................................................................................................... 2 - 15Restricted Earth Fault Inputs ............................................................................................................ 2 - 16Zero-Sequence (Core Balance) CT Installation ......................................................................... 2 - 16Control Power........................................................................................................................................... 2 - 17Contact Inputs ......................................................................................................................................... 2 - 18Output Relays........................................................................................................................................... 2 - 19Serial Communications ....................................................................................................................... 2 - 21IRIG-B ........................................................................................................................................................... 2 - 22

3.INTERFACES Front Control Panel Interface ..................................................................................................... 3 - 2850 Graphical Display Pages ...............................................................................................................3 - 2

Working with Graphical Display Pages ...........................................................................................3 - 3LED Status Indicators ..............................................................................................................................3 - 6850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL I

Home Screen Icons .................................................................................................................................. 3 - 7Relay Messages ......................................................................................................................................... 3 - 8

Target Messages ....................................................................................................................................... 3 - 8Self-test Errors............................................................................................................................................ 3 - 8Flash Messages........................................................................................................................................3 - 11

Label Removal ..........................................................................................................................................3 - 11Software Interface ........................................................................................................................ 3 - 13

EnerVista 8 Series Setup Software..................................................................................................3 - 13Hardware & Software Requirements ............................................................................................3 - 13Installing the EnerVista 8 Series Setup Software .....................................................................3 - 14

Connecting EnerVista 8 Setup to the Relay ................................................................................3 - 16Using the Quick Connect Feature ...................................................................................................3 - 16Configuring Ethernet Communications........................................................................................3 - 18Connecting to the Relay ......................................................................................................................3 - 19

Working with Setpoints & Setpoints Files ....................................................................................3 - 20Engaging a Device..................................................................................................................................3 - 20Entering Setpoints ..................................................................................................................................3 - 20File Support................................................................................................................................................3 - 22Using Setpoints Files..............................................................................................................................3 - 22Downloading & Saving Setpoints Files..........................................................................................3 - 23Adding Setpoints Files to the Environment.................................................................................3 - 23Creating a New Setpoints File...........................................................................................................3 - 23Upgrading Setpoints Files to a New Revision ............................................................................3 - 24Printing Setpoints....................................................................................................................................3 - 25Printing Values from a Connected Device...................................................................................3 - 26Loading Setpoints from a File ...........................................................................................................3 - 27

Quick Setup................................................................................................................................................3 - 27Upgrading Relay Firmware ................................................................................................................3 - 30

Loading New Relay Firmware...........................................................................................................3 - 30Advanced EnerVista 8 Series Setup Software Features .......................................................3 - 32

Flexcurve Editor .......................................................................................................................................3 - 32Transient Recorder (Waveform Capture) .....................................................................................3 - 34Protection Summary .............................................................................................................................3 - 38

Offline Settings File Conversion........................................................................................................3 - 39Convert SR 750/760 Files ....................................................................................................................3 - 39Conversion Summary Report ............................................................................................................3 - 40Results Window .......................................................................................................................................3 - 41

4.SETPOINTS Setpoints Main Menu ......................................................................................................................4 - 1Setpoints Entry Methods........................................................................................................................ 4 - 2Common Setpoints................................................................................................................................... 4 - 2Logic Diagrams.......................................................................................................................................... 4 - 4Setpoints Text Abbreviations............................................................................................................... 4 - 4

Device.....................................................................................................................................................4 - 6Clock................................................................................................................................................................ 4 - 6

Real-time Clock.......................................................................................................................................... 4 - 6PTP Configuration ..................................................................................................................................... 4 - 7Clock................................................................................................................................................................ 4 - 9SNTP Protocol ...........................................................................................................................................4 - 10

Security ........................................................................................................................................................4 - 10Basic Security............................................................................................................................................4 - 12CyberSentry ...............................................................................................................................................4 - 14

Communications.....................................................................................................................................4 - 21RS485............................................................................................................................................................4 - 21WiFi ................................................................................................................................................................4 - 21USB ................................................................................................................................................................4 - 25Ethernet Ports...........................................................................................................................................4 - 25II 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

Modbus Protocol .....................................................................................................................................4 - 27DNP 3............................................................................................................................................................4 - 35DNP / IEC104 Point Lists ......................................................................................................................4 - 39IEC 60870-5-104 .....................................................................................................................................4 - 42IEC 60870-5-103 .....................................................................................................................................4 - 44IEC 61850....................................................................................................................................................4 - 45

Transient Recorder ................................................................................................................................ 4 - 61Data Logger .............................................................................................................................................. 4 - 63Fault Reports ............................................................................................................................................ 4 - 66Front Panel ................................................................................................................................................ 4 - 70

Display Properties...................................................................................................................................4 - 70Default Screens........................................................................................................................................4 - 71Programmable LEDs..............................................................................................................................4 - 73Programmable Pushbuttons .............................................................................................................4 - 75

Resetting..................................................................................................................................................... 4 - 79Installation................................................................................................................................................. 4 - 79

System.................................................................................................................................................4 - 80Current Sensing....................................................................................................................................... 4 - 80Voltage Sensing ...................................................................................................................................... 4 - 81Power System .......................................................................................................................................... 4 - 83Breakers...................................................................................................................................................... 4 - 84FlexCurves ................................................................................................................................................. 4 - 86

Inputs...................................................................................................................................................4 - 95Contact Inputs ......................................................................................................................................... 4 - 95Virtual Inputs ............................................................................................................................................ 4 - 98Remote Inputs........................................................................................................................................4 - 100

Outputs ............................................................................................................................................ 4 - 101Output Relays.........................................................................................................................................4 - 101

Output Relay 1 (F1) Trip ..................................................................................................................... 4 - 102Output Relay 2 (F4) .............................................................................................................................. 4 - 105Auxiliary Output Relays .................................................................................................................... 4 - 107Critical Failure Relay #8 .................................................................................................................... 4 - 109

Virtual Outputs.......................................................................................................................................4 - 109Protection ....................................................................................................................................... 4 - 110

Current Elements..................................................................................................................................4 - 112Inverse Time Overcurrent Curves................................................................................................. 4 - 113Phase Time Overcurrent Protection............................................................................................ 4 - 120Phase Instantaneous Overcurrent Protection........................................................................ 4 - 123Phase Directional Overcurrent Protection ............................................................................... 4 - 127Neutral Time Overcurrent Protection ......................................................................................... 4 - 130Neutral Instantaneous Overcurrent Protection..................................................................... 4 - 133Neutral Directional Overcurrent Protection ............................................................................ 4 - 136Ground Time Overcurrent Protection......................................................................................... 4 - 142Ground Instantaneous Overcurrent Protection..................................................................... 4 - 145Ground Directional Overcurrent Protection ............................................................................ 4 - 147Sensitive Ground Time Overcurrent Protection..................................................................... 4 - 151Sensitive Ground Instantaneous Overcurrent Protection................................................. 4 - 155Sensitive Ground Directional Overcurrent Protection ........................................................ 4 - 157Restricted Ground (Earth) Fault ..................................................................................................... 4 - 161Negative Sequence Time Overcurrent Protection................................................................ 4 - 167Negative Sequence Instantaneous Overcurrent Protection ........................................... 4 - 170Negative Sequence Directional Overcurrent Protection................................................... 4 - 173Broken Conductor ............................................................................................................................... 4 - 176Load Encroachment ........................................................................................................................... 4 - 180Cable Thermal Model ......................................................................................................................... 4 - 182

Voltage Elements..................................................................................................................................4 - 185Undervoltage Curves ......................................................................................................................... 4 - 186850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL III

Phase Undervoltage Protection .................................................................................................... 4 - 187Auxiliary Undervoltage...................................................................................................................... 4 - 191Phase Overvoltage Protection ....................................................................................................... 4 - 194Auxiliary Overvoltage Protection.................................................................................................. 4 - 197Neutral Overvoltage Protection .................................................................................................... 4 - 200Negative Sequence Overvoltage Protection........................................................................... 4 - 203

Power Elements ....................................................................................................................................4 - 206Directional Power................................................................................................................................. 4 - 206Wattmetric Ground Fault ................................................................................................................. 4 - 212

Frequency Elements ...........................................................................................................................4 - 218Underfrequency.................................................................................................................................... 4 - 218Overfrequency....................................................................................................................................... 4 - 222Frequency Rate of Change.............................................................................................................. 4 - 225

Monitoring...................................................................................................................................... 4 - 230Trip and Close Circuit Monitoring .................................................................................................4 - 230Breaker Arcing Current......................................................................................................................4 - 238Breaker Health ......................................................................................................................................4 - 241Functions .................................................................................................................................................4 - 246

Power Factor.......................................................................................................................................... 4 - 246Demand.................................................................................................................................................... 4 - 253Current ...................................................................................................................................................... 4 - 253Real Power .............................................................................................................................................. 4 - 257Reactive Power ..................................................................................................................................... 4 - 260Apparent Power.................................................................................................................................... 4 - 263Pulsed Outputs...................................................................................................................................... 4 - 266Digital Counters .................................................................................................................................... 4 - 268

Control ............................................................................................................................................. 4 - 273Setpoint Group ......................................................................................................................................4 - 273Breaker Control .....................................................................................................................................4 - 275Virtual Input Control ...........................................................................................................................4 - 279Trip Bus .....................................................................................................................................................4 - 279Breaker Failure ......................................................................................................................................4 - 283

Setup.......................................................................................................................................................... 4 - 284Initiate ....................................................................................................................................................... 4 - 287

Synchrocheck ........................................................................................................................................4 - 288Manual Close Blocking ......................................................................................................................4 - 293Cold Load Pickup..................................................................................................................................4 - 296Undervoltage Restoration................................................................................................................4 - 301Underfrequency Restoration..........................................................................................................4 - 305Bus Transfer............................................................................................................................................4 - 308

ATS Wiring Diagrams ......................................................................................................................... 4 - 327Autoreclose.............................................................................................................................................4 - 331

Setup.......................................................................................................................................................... 4 - 333Initiate ....................................................................................................................................................... 4 - 340Shot x......................................................................................................................................................... 4 - 341Rate Supervision................................................................................................................................... 4 - 342Current Supervision ............................................................................................................................ 4 - 345Zone Coordination............................................................................................................................... 4 - 348

VT Fuse Failure ......................................................................................................................................4 - 351FlexLogic ......................................................................................................................................... 4 - 353

Timers........................................................................................................................................................4 - 361Non-volatile Latches ..........................................................................................................................4 - 362FlexLogic Equation ..............................................................................................................................4 - 363

Viewing FlexLogic Graphics ............................................................................................................4 - 363

5.STATUS Breakers ................................................................................................................................................5 - 1IV 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

Contact Inputs ................................................................................................................................... 5 - 2Output Relays .................................................................................................................................... 5 - 2

Output Relay 1 (TRIP)................................................................................................................................5 - 2Output Relay 2 (CLOSE) ...........................................................................................................................5 - 2

Virtual Inputs ...................................................................................................................................... 5 - 3Virtual Outputs .................................................................................................................................. 5 - 3Communications .............................................................................................................................. 5 - 4

GOOSE Rx and Tx.......................................................................................................................................5 - 4Information ......................................................................................................................................... 5 - 5

Main CPU .......................................................................................................................................................5 - 5Comms CPU .................................................................................................................................................5 - 6Hardware Versions ...................................................................................................................................5 - 6

Device Status ..................................................................................................................................... 5 - 7Clock....................................................................................................................................................... 5 - 7PTP Status............................................................................................................................................ 5 - 8Autoreclose 1 ..................................................................................................................................... 5 - 8

6.METERING Summary.............................................................................................................................................. 6 - 3Currents ................................................................................................................................................ 6 - 4Voltages................................................................................................................................................ 6 - 5Frequency............................................................................................................................................ 6 - 7Harmonics 1 ....................................................................................................................................... 6 - 7Harmonics 2 ....................................................................................................................................... 6 - 8Synchrocheck .................................................................................................................................... 6 - 8Power..................................................................................................................................................... 6 - 9Energy..................................................................................................................................................6 - 10Current Demand.............................................................................................................................6 - 10Power Demand ...............................................................................................................................6 - 11Thermal Capacity...........................................................................................................................6 - 11Directional Power...........................................................................................................................6 - 12Wattmetric Ground Fault ...........................................................................................................6 - 12

7.RECORDS Events .................................................................................................................................................... 7 - 1Transient Records ............................................................................................................................ 7 - 2Fault Reports ...................................................................................................................................... 7 - 2Data Logger........................................................................................................................................ 7 - 3Breakers ............................................................................................................................................... 7 - 3

Breaker Arcing Current ...........................................................................................................................7 - 3Breaker Health............................................................................................................................................7 - 4

Digital Counters ................................................................................................................................ 7 - 4Clear Records..................................................................................................................................... 7 - 5

8.MAINTENANCE Environmental Health Report..................................................................................................... 8 - 1

9.APPENDIX A Warranty .............................................................................................................................................. 9 - 1Revision history ................................................................................................................................. 9 - 1

Major Updates ............................................................................................................................................9 - 2850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL V

VI 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

GED850 Feeder Protection System

Chapter 1: Introduction

igital Energy

Introduction

The 850 Feeder Protection Systems are microprocessor-based units 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 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 11

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.

DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM CHAPTER 1: INTRODUCTIONDescription of the 850 Feeder Protection System

CPURelay 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 CaptureMagnetic 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 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 emulating a fault recorder. The waveforms can be retrieved from the relay via the EnerVista 8 Series Setup software for display and diagnostics.FrequencyFrequency 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 HarmonicsAll 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 InputsThe 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 values are calculated from one cycle of samples prior to filtering.Protection ElementsAll 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.12 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEMFigure 1-1: Single Line Diagram

Table 1-1: ANSI Device Numbers and Functions

892770A2.CDR

3 CTs

CT

27P 59P 59N 59_2 VTFF 81U 81O

2 2 4

81R

51N 50N 67N

87G

27X 59X

METERINGTRANSIENT RECORDER

EVENT RECORDERFAULT REPORT

LOAD

BUS

TRIP

52

79

CLOSE

MONITORING

CLP50BF 51P 50P

2 2

67P 51_2 50_2 67_2 49

50G/51G50G/51G51G 50G 67G

50G/51G50G/51G51SG 50SG 67SG

25

32N

2 2 2 2

2 2

2

V_2

2

BUS

BREAKER

32

2

850Feeder Protection System

V_0

ANSI Device Description

25 Synchrocheck

27P (2) Phase Undervoltage

27X (2) Auxiliary Undervoltage

32 (2) Directional Power

32N Wattmetric Ground Fault (Wattmetric zero sequence directional)

49 Cable Thermal Model

50BF Breaker Failure

50G Ground Instantaneous Overcurrent

50SG Sensitive Ground Instantaneous Overcurrent

50N (2) Neutral Instantaneous Overcurrent

50P (2) Phase Instantaneous Overcurrent

50_2 Negative Sequence Instantaneous Overcurrent

51G Ground Time Overcurrent

51SG Sensitive Ground Time Overcurrent

51N (2) Neutral Time Overcurrent

51P (2) Phase Time Overcurrent

51_2 Negative Sequence Time Overcurrent

52 AC Circuit Breaker

55 (2) Power Factor

59N Neutral Overvoltage

59P (2) Phase Overvoltage850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 13

DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM CHAPTER 1: INTRODUCTIONTable 1-2: Other Device Functions

Figure 1-2: Main Menu Hierarchy

59X Auxiliary Overvoltage

59_2 Negative Sequence Overvoltage

67G Ground Directional Element

67SG Sensitive Ground Directional Element

67N Neutral Directional Element

67P Phase Directional Element

67_2 Negative Sequence Directional Element

79 Automatic Recloser

81O (2) Overfrequency

81U (4) Underfrequency

81R Frequency Rate of Change

87G Restricted Ground Fault (RGF)

I1/12 Broken Conductor

VTFF Voltage Transformer Fuse Failure

Description

Automatic Bus Transfer Scheme

Breaker Arcing Current (I2t)

Breaker Control

Breaker Health

Cold Load Pickup

Data Logger

Demand

Digital Counters

Event Recorder

Fault Report and Fault Locator

FlexLogic Equations

IEC 61850 Communications

Load Encroachment

Manual Close Blocking

Metering: current, voltage, power, PF, energy, frequency, harmonics, THD

Modbus User Map

Non-volatile Latches

Output Relays

Setpoint Groups (6)

Trip Bus (6)

Transient Recorder (Oscillography)

Trip and Close Coil Monitoring

Underfrequency Restoration

Undervoltage Restoration

User-programmable LEDs

User-programmable Pushbuttons

Virtual Inputs (32)

Virtual Outputs (32)

ANSI Device Description14 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEMLevel 1 Level 2 Level 1 Level 2

Setpoints Device

System

Inputs

Outputs

Protection

Monitoring

Control

FlexLogic

Status

Breakers

S chesContact Inputs

Output Relays

Virtual Inputs

Virtual Outputs

Communications

Information

Device Status

Metering SummaryCurrentsVoltages

FrequencyHarmonics

Synchrocheck

PowerEnergy

Current Demand

Thermal Capacity

Records Events

Transients

Fault Reports

Breakers

Dig Counters

Clear Records

Targets

Clock

Autoreclose 1

Power Demand

Directional Power

Wattmetric Gnd Flt

Data Logger850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 15

SECURITY OVERVIEW CHAPTER 1: INTRODUCTIONSecurity Overview

The following security features are available:BASIC SECURITYThe basic security feature is present in the default offering of the 850 relay. The 850 introduces the notion of roles for different levels of authority. Roles are used as login 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 850 can still use the Setpoint access switch feature, but enabling the feature can be done only by an Administrator. Setpoint access is controlled by a keyed switch to offer some minimal notion of security.CYBERSENTRYThe CyberSentry Embedded Security feature is a software option that provides advanced security services. When the software option is purchased, the Basic Security is automatically disabled.CyberSentry provides security through the following features: An Authentication, Authorization, Accounting (AAA) Remote Authentication Dial-In

User Service (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 allows access to 850 device operations and configurations based on specific roles and individual 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 EnerVista software and 850 devices using the Secure Shell (SSH) protocol, the Advanced 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 Information Event Management (SIEM) systems for centralized cyber security monitoring.

There are two types of authentication supported by CyberSentry that can be used to access the 850 device: Device Authentication in which case the authentication is performed on the

850 device itself, using the predefined roles as users (No RADIUS involvement). 850 authentication using local roles may be done either from the front panel or

through EnerVista. 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 850 850 authentication using RADIUS server may be done only through EnerVista.

FASTPATH: 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.16 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION SECURITY OVERVIEWWhen both 850 device and server authentication are enabled, the 850 automatically directs authentication requests to the 850 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 850 automatically forwards the request to a RADIUS server when one is provided. If a RADIUS server is provided, but is unreachable over the network, server authentication requests are denied. In this situation, use local 850 device accounts to gain access to the 850 system.USER ROLESUser Access Levels are used to grant varying permissions to specific user roles. User roles are used by both Basic Security and CyberSentry.The following user roles are supported: Administrator: 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.

Operator: 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 does not have any ability to change or view any settings. This role is not a concurrent role.

Observer: The Observer role has read-only access to all 850 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.

Factory: 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 850.850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 17

850 ORDER CODES CHAPTER 1: INTRODUCTION850 Order Codes

The information to specify an 850 relay is provided in the following Order Code figure:

Figure 1-3: Order Codes

892800.PDF

850 E * NN * H N N A * N G * * * * * * * * * NInterface 850 | | | | | | | | | | | | | | | | | | | | | 850 Feeder Protection SystemLanguage E | | | | | | | | | | | | | | | | | | | | EnglishPhase Currents P1 | | | | | | | | | | | | | | | | | | | 1 A 3-phase current inputs (bank 1/2)

P5 | | | | | | | | | | | | | | | | | | | 5 A 3-phase current inputs (bank 1/2)

NN | | | | | | | | | | | | | | | | | | No phase current inputs (bank 3)Ground Currents G1 | | | | | | | | | | | | | | | | | 1 A ground input

G5 | | | | | | | | | | | | | | | | | 5 A ground input

S1 | | | | | | | | | | | | | | | | 1 A ground + 1 A sensitive ground input65 | | | | | | | | | | | | | | | | 5 A ground + 5 A sensitive ground input

Power Supply H | | | | | | | | | | | | | | | | 110 to 250 V DC/110 to 230 V AC Slot B N | | | | | | | | | | | | | | | NoneSlot C N | | | | | | | | | | | | | | None

Slot F A ||||

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2 Form A (Vmon), 3 Form C, 7 Digital Inputs (Low/High Voltage, Int/Ext Supply)

Slot G N | | | | | | | | | | | | None

A ||||

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2 Form A (Vmon), 3 Form C, 7 Digital Inputs (Low/High Voltage, Int/Ext Supply)

Slot H N | | | | | | | | | | | NoneFaceplate G | | | | | | | | | | Color Graphical DisplayCurrent Protection S | | | | | | | | | Basic configuration: 50P, 50G, 50N, 51P, 51G

M ||||

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Standard configuration: 50P, 50G/SG, 50N, 50_2, 51P, 51G/SG, 51N, 51_2, RGF

A|||

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Advanced configuration: 49, 50P, 50G/SG, 50N, 50_2, 51P, 51G/SG, 51N, 51_2, 67P, 67N, 67G/SG, 67_2, RGF, Load Encroachment, Broken Conductor

Voltage Monitoring and Protection S ||||

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Standard Voltage Metering & Protection: 27P, 27X, 59P, 59N, 59X, 81O/U

P ||||

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Advanced Voltage Metering & Protection - 25, 27P, 27X, 32, 32N, 55, 59P, 59N, 59X, 59_2, 81R/O/U

Control B | | | | | | | BasicF | | | | | | | FlexLogic, CLP, 50BF, Trip Bus

C ||||

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FlexLogic, CLP, Auto Reclose, 50BF, Trip Bus, Bus Transfer (requires voltage option P)

Monitoring B | | | | | | BasicC | | | | | | Advanced Breaker Health

Communications S E ||||

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Front USB, 1 x Rear RS485 : Modbus RTU, DNP3.0, IEC60870-5-103 + 1 x Ethernet (Modbus TCP)

1 E ||||

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Front USB, 1 x Rear RS485 + 2 x Ethernet Fiber, MODBUS RTU/TCP, DNP3.0, IEC 60870-5-103/104, 1588, SNTP

1 P ||||

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Front USB, 1 x Rear RS485 + 2 x Ethernet Fiber, MODBUS RTU/TCP, DNP3.0, IEC 60870-5-103/104, 1588, SNTP, PRP

2 E ||||

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Front USB, 1 x Rear RS485 + 2 x Ethernet Fiber, MODBUS RTU/TCP, DNP3.0, IEC 60870-5-103/104, 1588, SNTP, PRP, IEC 61850

Fiber Optic Connector N | | | None S | | | ST, Multi-mode 850 nm

Wireless Communication N | | NoneW | | WiFi 802.11

Security B | BasicA | CyberSentry Level 1

Future Option N Not Available

||18 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION SPECIFICATIONSSpecifications

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.

ProtectionPHASE/NEUTRAL/GROUND TIME OVERCURRENT (51P/N/G)Current: ....................................................................Phasor or RMSPickup Level:..........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel 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

Curve Shape:.........................................................IEEE Extremely/Very/Moderately Inverse; ANSI Extremely/Very/Normally/Moderately Inverse; Definite Time, IEC A/B/C and Short Inverse; IAC Extremely/Very/Inverse/Short Inverse; FlexCurve A/B/C/D, I2t, I4t

Curve Multiplier:...................................................0.05 to 600.00 in steps of 0.01Reset Time: ............................................................Instantaneous, TimedCurve Timing Accuracy:...................................Currents > 1.1 x pickup: 3% of operate time or cycle

(whichever is greater) from pickup to operateVoltage Restrained Function (51V):.............Modifies Pickup from 0.1 < V < 0.9 VT Nominal in a fixed

linear relationshipFASTPATH: Add 1.5 cycles to the curve time to obtain the TOC operating time, i.e., from fault inception

until operation.

SENSITIVE GROUND TIME OVERCURRENT (51SG)Current: ....................................................................Isg (Phasor or RMS)Pickup Level:..........................................................0.005 to 3.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel 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

Curve Shape:.........................................................IEEE Extremely/Very/Moderately Inverse ANSI Extremely/Very/Normally/Moderately Inverse IEC Curve A/B/C and Short Inverse IAC Extreme/Very/Inverse/Short Inverse FlexCurve A, FlexCurve B, FlexCurve C, FlexCurve D I2t , I4t , Definite Time

Curve Multiplier:...................................................0.05 to 600.00 in steps of 0.01Reset Time: ............................................................Instantaneous, TimedCurve Timing Accuracy:...................................Currents > 1.1 x pickup: 3% of curve delay or 1/2 cycle

(whichever is greater) from pickup to operate850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 19

SPECIFICATIONS CHAPTER 1: INTRODUCTIONNEGATIVE SEQUENCE TIME OVERCURRENT (51_2)Operating Parameter: ...................................... I_2 (Fundamental Phasor Magnitude)Pickup Level: .........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel 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

Curve Shape:......................................................... IEEE Extremely/Very/Moderately Inverse ANSI Extremely/Very/Normally/Moderately Inverse IEC Curve A/B/C and Short Inverse IAC Extreme/Very/Inverse/Short Inverse FlexCurve A, FlexCurve B, FlexCurve C, FlexCurve D I2t , I4t , Definite Time

Curve Multiplier: ..................................................0.05 to 600.00 in steps of 0.01Reset Time: ............................................................ Instantaneous, TimedCurve Timing Accuracy: ..................................Currents > 1.1 x pickup: 3% of curve delay or cycle

(whichever is greater) from pickup to operate

NOTE

NOTE: Add 1.5 cycles to the curve time to obtain the TOC operating time, i.e., from fault inception until operation.

PHASE/NEUTRAL/GROUND INSTANTANEOUS OVERCURRENT (50P/N/G)Current (for Phase IOC only): .........................Phasor or RMSCurrent (for Neutral/Ground IOC only): ..... Fundamental Phasor MagnitudePickup Level: .........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy:.................................................... For 0.1 to 2.0 x CT: 0.5% of reading or 0.4% of rated,


Operate Time: ......................................................

CHAPTER 1: INTRODUCTION SPECIFICATIONSNEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT (50_2)Current: ....................................................................I_2 Fundamental Phasor MagnitudePickup Level:..........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy: ....................................................For 0.1 to 2.0 x CT: 0.5% of reading or 0.4% of rated,


Pickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 sOverreach:..............................................................< 2% Operate Time:.......................................................< 12 ms typical at 3 x Pickup at 60 Hz

< 15 ms typical at 3 x Pickup at 50 Hz Timer Accuracy:...................................................3% of delay setting or cycle (whichever is greater) from

pickup to operate

PHASE DIRECTIONAL OVERCURRENT (67P)Relay Connection:...............................................90(Quadrature)Quadrature Voltage:..........................................ABC phase seq.: phase A (Vbc), phase B (Vca), phase C (Vab);

ACB phase seq.: phase A (Vcb), phase B (Vac), phase C (Vba)Polarizing Voltage Threshold:........................0.050 to 3.000 x VT in steps of 0.001 x VTCurrent Sensitivity Threshold: .......................0.05 x CTCharacteristic Angle: .........................................0 to 359 in steps of 1Angle Accuracy:................................................... 2Operation Time (FlexLogic operands): ..Reverse to Forward transition: < 12 ms, typically;

Forward to Reverse transition:

SPECIFICATIONS CHAPTER 1: INTRODUCTIONSENSITIVE GROUND DIRECTIONAL OVERCURRENT (67SG)Directionality:........................................................Co-existing forward and reversePolarizing:...............................................................Voltage, Current, DualPolarizing Voltage:..............................................V_0 or VXPolarizing Current:.............................................. IgOperating Current: ............................................. IsgLevel Sensing:....................................................... Ig, IsgCharacteristic Angle:......................................... -90 to 90 in steps of 1Limit Angle: ............................................................40 to 90 in steps of 1, independent for forward and

reverseAngle Accuracy:................................................... 2Pickup Level: .........................................................0.005 to 3.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98%Operate Time (no direction transition): ....< 12 ms typical at 3 Pickup at 60 Hz

< 15 ms typical at 3 Pickup at 50 Hz

NEGATIVE SEQUENCE DIRECTIONAL OVERCURRENT (67_2)Directionality:........................................................Co-existing forward and reversePolarizing:...............................................................VoltagePolarizing Voltage:..............................................V_2Operating Current: ............................................. I_2Level Sensing:.......................................................Negative-sequence: |I_2| K x |I_1|Restraint, K: ...........................................................0.000 to 0.500 in steps of 0.001Characteristic Angle:.........................................0 to 90 in steps of 1Limit Angle: ............................................................40 to 90 in steps of 1, independent for forward and

reverseAngle Accuracy:................................................... 2Pickup Level: .........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupOperate Time: ......................................................< 12 ms typical at 3 x Pickup at 60 Hz

< 15 ms typical at 3 x Pickup at 50 Hz

RESTRICTED GROUND (EARTH) FAULT (87G)Operating Parameter: ...................................... Ia, Ib, Ic and Ig (Fundamental Phasor Magnitude)Pickup Level: .........................................................0.050 to 30.000 x CT in steps of 0.001 x CT (phase CT)Ground Supervision Level:..............................0.050 to 30.000 x CT in steps of 0.001 x CT (ground CT)Dropout Level: ......................................................97 to 98% of PickupSlope Range: .........................................................0 to 100% in steps of 1%Pickup Delay: ........................................................0.000 to 6000.000 s in steps of 0.001 sLevel Accuracy:.................................................... For 0.1 to 2.0 x CT: 0.5% of reading or 0.4% of rated,


Operate Time: ......................................................

CHAPTER 1: INTRODUCTION SPECIFICATIONSLOAD ENCROACHMENTOperating Parameter:.......................................Positive sequence impedance (V1/I1)Reach (in secondary ): ...................................0.02 to 250.00 in steps of 0.01Angle:........................................................................5 to 50 in steps of 1Minimum Voltage:...............................................0.00 to 1.50 x VT in steps of 0.01 x VTImpedance Accuracy:....................................... 5%Angle Accuracy:................................................... 2Pickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 sOperate Time:.......................................................

SPECIFICATIONS CHAPTER 1: INTRODUCTIONPHASE OVERVOLTAGE (59P)Votage: .................................................................... Fundamental Phasor MagnitudePickup Level: .........................................................0.02 to 3.00 x VT in steps of 0.01 x VTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy:....................................................0.5% of reading from 10 to 208 VPhases Required for Operation:...................Any one, Any two, All threePickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001s (Definite Time)Dropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001s (Definite Time)Pickup Accuracy:.................................................Per phase voltage input channel errorOperate Time: ......................................................< 25 ms at 1.1 x pickup at 60Hz

< 30 ms at 1.1 x pickup at 50HzTimer Accuracy: .................................................. 3% of delay setting or cycle (whichever is greater) from

pickup to operate

AUXILIARY OVERVOLTAGE (59X)Operating Parameter: ......................................VX Pickup Level: .........................................................0.00 to 3.00 x VT in steps of 0.01 x VTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy:....................................................0.5% of reading from 10 to 208 VPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001sOperate Time: ......................................................< 25 ms at 1.1 x pickup at 60Hz

< 30 ms at 1.1 x pickup at 50HzTimer Accuracy: .................................................. 3% of delay setting time or cycle (whichever is greater)

from pickup to operate

NEUTRAL OVERVOLTAGE (59N)Operating Parameter: ......................................3V_0 calculated from phase to ground voltagesPickup Level: .........................................................0.02 to 3.00 x VT in steps of 0.01 x VTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy:....................................................0.5% of reading from 10 to 208 VNeutral Overvoltage Curves:.........................Definite time, FlexCurve A,B,C,DPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 s (Definite Time)Dropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 s (Definite Time)Operate Time: ......................................................< 25 ms at 1.1 x pickup at 60Hz

< 30 ms at 1.1 x pickup at 50HzCurve Timing Accuracy: ..................................at > 1.1 x Pickup: 3% of curve delay or 1 cycle (whichever

is greater) from pickup to operate

NEGATIVE SEQUENCE OVERVOLTAGE (59_2)Operating Parameter: ......................................V_2Pickup Level: .........................................................0.00 to 3.00 x VT in steps of 0.01 x VTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy:.................................................... 0.5% of reading from 10 to 208 VPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 sOperate Time: ......................................................< 25 ms at 1.1 x pickup at 60 Hz

< 30 ms at 1.1 x pickup at 50 HzTimer Accuracy: .................................................. 3% of delay setting or cycle (whichever is greater)

from pickup to operate114 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION SPECIFICATIONSDIRECTIONAL POWER (32)Measured Power: ................................................3-phaseNumber of Stages:..............................................2Characteristic Angle: .........................................0 to 359 in steps of 1Calibration Angle: ...............................................0.00 to 0.95 in steps of 0.05Power Pickup Range:.........................................1.200 to 1.200 x Rated Power in steps of 0.001 Pickup Level Accuracy:..................................... 1% or 0.001 x Rated Power, whichever is greaterHysteresis: ..............................................................2% or 0.001 x Rated Power, whichever is greaterPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sOperate Time:.......................................................< 55 ms at 1.1 x pickup at 60 Hz

< 65 ms at 1.1 x pickup at 50 HzTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operate

WATTMETRIC GROUND FAULT (32N)Measured Power: ................................................zero-sequenceCharacteristic Angle: .........................................0 to 359 in steps of 1Power Pickup Range:.........................................0.001 to 1.200 CT x VT in steps of 0.001Pickup Level Accuracy:..................................... 1% or 0.0025 CT x VT, whichever is greaterHysteresis: ..............................................................3% or 0.001 CT x VT, whichever is greaterCurve: .......................................................................Definite Time, Inverse Time, or FlexCurveOperating Voltage Pickup Level: ..................0.02 to 3.00 x VT in steps of 0.01 x VTOperating Current Pickup Level: ..................0.002 to 30.000 x CT in steps of 0.001 x CTPower Pickup Delay: ..........................................0.000 to 6000.000 s in steps of 0.001 sInverse Time Multiplier:....................................0.01 to 2.00 s in steps of 0.01 sOperate Time:.......................................................< 40 ms at 1.1 x pickup at 60 Hz

< 47 ms at 1.1 x pickup at 50 HzCurve Timing Accuracy:................................... 3% of curve delay or cycle (whichever is greater) from

pickup to operate

UNDERFREQUENCY (81U)Pickup Level:..........................................................20.00 to 65.00 Hz in steps of 0.01Dropout Level: ......................................................Pickup + 0.03 HzPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001sMinimum Operating Voltage: ........................0.000 to 1.250 x VT in steps of 0.001 x VTMinimum Operating Current: ........................0.000 to 30.000 x CT in steps of 0.001 x CTLevel Accuracy: .................................................... 0.001 HzTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operateOperate Time:.......................................................typically 7.5 cycles at 0.1 Hz/s change

typically 7 cycles at 0.3 Hz/s change typically 6.5 cycles at 0.5 Hz/s change

FASTPATH: Typical times are average Operate Times including variables such as frequency change instance, test method, etc., and may vary by 0.5 cycles.

OVERFREQUENCY (81O)Pickup Level:..........................................................20.00 to 65.00 Hz in steps of 0.01Dropout Level: ......................................................Pickup - 0.03 HzPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 sMinimum Operating Voltage: ........................0.000 to 1.250 x VT in steps of 0.001 x VTLevel Accuracy: .................................................... 0.001 HzTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operateOperate Time:.......................................................typically 7.5 cycles at 0.1 Hz/s change

typically 7 cycles at 0.3 Hz/s change typically 6.5 cycles at 0.5 Hz/s change850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 115

SPECIFICATIONS CHAPTER 1: INTRODUCTIONFASTPATH: Typical times are average Operate Times including variables such as frequency change instance, test method, etc., and may vary by 0.5 cycles.

FREQUENCY RATE OF CHANGE (81R)df/dt Trend:............................................................ Increasing, Decreasing, Bi-directionaldf/dt Pickup Level: ..............................................0.10 to 15.00 Hz/s in steps of 0.01 Hz/sdf/dt Dropout Level: ..........................................96% of Pickup Leveldf/dt Level Accuracy: ........................................80 mHz/s or 3.5%, whichever is greaterMinimum Frequency: ........................................20.00 to 80.00 Hz in steps of 0.01 HzMaximum Frequency:.......................................20.00 to 80.00 Hz in steps of 0.01 HzMinimum Voltage Threshold: ........................0.000 to 1.250 x VT in steps of 0.001 x VTMinimum Current Threshold: ........................0.000 to 30.000 x CT in steps of 0.001 x CTPickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sTimer Accuracy: .................................................. 3% of delay setting or cycle (whichever is greater) from

pickup to operate95% Settling Time for df/dt: ..........................< 24 cyclesOperate Time: ...................................................... typically 10 cycles at 2 Pickup

Control

TRIP BUSNumber of Elements: ........................................6Number of Inputs: ..............................................16Pickup Time Delay:.............................................0.000 to 6000.000 s in steps of 0.001 sDropout Time Delay: .........................................0.000 to 6000.000 s in steps of 0.001 sOperate Time: ......................................................< 2 ms at 60 HzTimer Accuracy: .................................................. 3% of delay time or cycle (whichever is greater) from

pickup to operate

SYNCHROCHECK (25)Maximum Frequency Difference:................0.01 to 5.00 Hz in steps of 0.01 Hz for frequency window of

fnom 5 Hz Maximum Angle Difference: ..........................1 to 100 in steps of 1Maximum Voltage Difference: ......................10 to 600000 V in steps of 1 VHysteresis for Maximum Frequency

Difference: ........................................................0.01 to 0.10 Hz in steps of 0.01 HzBreaker Closing Time:.......................................0.000 to 6000.00 s in steps of 0.001 sDead Source Function:.....................................None, LB & DL, DB & LL, DB & DL, DB OR DL, DB XOR DLDead/Live Levels for Bus and Line: ............0.00 to 1.5 x VT in steps of 0.01 x VT

MANUAL CLOSE BLOCKINGManual Close Block Time:...............................0.000 to 6000.000 s in steps of 0.001 sTimer Accuracy: .................................................. 3% of delay setting or cycle, (whichever is greater)

from pickup to operateProgrammability: ................................................Block IOC elements, raise TOC pickups, change setting

groups

BREAKER FAILUREMode:........................................................................3-poleCurrent Supervision:..........................................phase and neutral current (fundamental phasor magnitude)Current Supervision Pickup:...........................0.050 to 30.000 x CT in steps of 0.001 x CTCurrent Supervision Dropout: .......................97 to 98% of pickupCurrent Supervision Accuracy:..................... For 0.1 to 2.0 x CT: of reading or 0.4% of rated (whichever

is greater), For > 2.0 x CT: 1.5% of reading

Time Delay:............................................................0.000 to 6000.000 s in steps of 0.001 sTimer Accuracy: .................................................. 3% of delay setting or cycle (whichever is greater) from

pickup to operate116 850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL

CHAPTER 1: INTRODUCTION SPECIFICATIONSCOLD LOAD PICKUPOperating Parameters: ....................................Phase currents only (Fundamental Phasor Magnitude)

automatically or with (any FlexLogic) inputOutage Time Before Cold Load and Time

Before Reset:....................................................0.000 to 6000.000 s in steps of 0.001 sPIckup and Dropout Level:..............................0.050 x CT fixedLevel Accuracy: .................................................... 0.5%Timer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operateProgrammability: ................................................Block IOC elements, raise TOC pickups, change setting group

AUTORECLOSE (79)Number of Breakers: .........................................Single breaker applicationNumber of Poles:.................................................3-pole tripping/autoreclose schemesReclose attempts: ...............................................Up to 4 before lockoutBlocking:..................................................................Each reclose shot can block IOC, raise TOC Pickup or change

the setting groupAdjustability:..........................................................Current supervision can adjust the maximum number of

shots attemptedTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operate

AR CURRENT SUPERVISION AND AR ZONE COORDINATIONOperating Parameter:.......................................Ia, Ib, Ic, In (Fundamental Phasor Magnitude)PIckup Level:..........................................................0.050 to 30.000 x CT in steps of 0.001 x CTDropout Level: ......................................................97 to 98% of PickupLevel Accuracy: ....................................................For 0.1 to 2.0 x CT: 0.5% of reading or 0.4% of rated,


Timer Accuracy:................................................... 3% of delay setting or cycle, (whichever is greater) from pickup to operate

BUS TRANSFERApplicability: ..........................................................Used for double-bus system with two normally-closed

incoming, and one normally-open bus tie circuit breaker.Closing: ....................................................................Automatic closing of the bus tie breaker after a loss of one

source, with bus decayed voltage permissive.Tripping:...................................................................Trips a pre-selected breaker after the third breaker is

manually closed (prevent parallel operation).Timing Accuracy: ................................................3% of delay setting or cycle, (whichever is greater) from

pickup to operate

UNDERVOLTAGE RESTORATIONInitiated By: ............................................................User can setMinimum Voltage Level: ..................................0.000 to 1.250 x VT in steps of 0.001 x VTTime Delay: ............................................................0.000 to 6000.000 s in steps of 0.001 sIncomplete Sequence Timer: ........................1 to 10000 min in steps of 1 minPhases Required for Operation: ...................Any one, any two, or all three phasesLevel Accuracy: ....................................................Per voltage inputTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operate

UNDERFREQUENCY RESTORATIONInitiated By: ............................................................User can setMinimum Voltage Level: ..................................0.000 to 1.250 x VT in steps of 0.001 x VTMinimum Frequency Level: ............................20.00 to 65.00 Hz in steps of 0.01 HzTime Delay: ............................................................0.000 to 6000.000 s in steps of 0.001 sIncomplete Sequence Timer: ........................1 to 10000 min in steps of 1 minLevel Accuracy: .................................................... 0.5% of reading from 15 to 208 VTimer Accuracy:................................................... 3% of delay setting or cycle (whichever is greater) from

pickup to operate850 FEEDER PROTECTION SYSTEM INSTRUCTION MANUAL 117

SPECIFICATIONS CHAPTER 1: INTRODUCTIONMonitoringTRIP CIRCUIT MONITOR (TCM)Applicable Voltage: ............................................20 to 250 VDCTrickle Current:.....................................................1 to 2.5 mATiming Accuracy: ................................................ 3 % or 4 ms, whichever is greater

CLOSE CIRCUIT MONITOR (CCM)Applicable Voltage: ............................................20 to 250 VDCTrickle Current:.....................................................1 to 2.5 mATiming Accuracy: ................................................ 3 % or 4 ms, whichever is greater

BREAKER ARCING CURRENTMode:........................................................................3-polePrinciple: .................................................................

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