GE P741, P742, P743 Technical Manual

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GE Energy Connections Grid Solutions

MiCOM P40 Agile

P741, P742, P743

Technical Manual Busbar Differential Protection Relay

Hardware version: J and K

Publication reference: P74x/EN M/Na7

Software version: 51

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CONTENTS

Safety Section

Section 1 I

Section 2 T

Section 3 G

Section 4 S

Section 5 O

on 6 Application Notes P74x/EN AP/Na7

Secti

Section 7 P

Section 8 M

ntroduction P74x/EN IT/Na7

echnical Data P74x/EN TD/Na7

etting Started P74x/EN GS/Na7

ettings P74x/EN ST/Na7

peration P74x/EN OP/Na7

rogrammable Logic P74x/EN PL/Na7

easurements and Recording P74x/EN MR/Na7

Section 9 F

Section 10 C

Section 11 M

Section 12 T

Section 13 S

Section 14 S

Section 15 In

Section 16 F

irmware Design P74x/EN FD/Na7

ommissioning P74x/EN CM/Na7

aintenance P74x/EN MT/Na7

roubleshooting P74x/EN TS/Na7

CADA Communications P74x/EN SC/Na7

ymbols and Glossary P74xEN SG/Na7

stallation P74x/EN IN/Na7

irmware and Service Manual Version History P74xEN VH/Na7

Appendix A

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Page 5

Introduction

MiCOM P74

1, P742, P743

P74x/EN IT/N

INTRODUCTION

Hardware Suffix: J and K Software Version: 51

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Introduction

MiCOM P741, P742, P743

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Introduction

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P74x/EN IT/N

CONTENTS

1. DOCUMENTATION STRUCTURE 3

2. INTRODUCTION TO MiCOM 5

3. PRODUCT SCOPE 6

3.1 Functional overview 6

3.2 Ordering options 8

FIGURES

FIGURE 1: FUNCTIONAL DIAGRAM 7

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Introduction

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MiCOM P741, P742, P743

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Introduction

MiCOM P741, P742, P743

(IT) 1-

1. DOCUMENTATION STRUCTURE

The manual provides a f unctional and technical description of the MiCOM protection relay and a comprehensive set of instructions for the relay’s use and application.

The section contents are summarized below:

P74x/EN IT Introduction

A guide to the MiCOM range of relays and the documentation structure. General safety aspects of handling Electronic Equipment is discussed with particular reference to relay safety symbols. Also a general functional overview of the relay and brief application summary is given.

P74x/EN TD Technical Data

Technical data inc luding s ettin g ran ges, accurac y lim its, r ecommended operating condit ions , ratings and perform ance data. C omplianc e with n orms and internat ional stand ards is quoted where appropriate.

P74x /EN GS Getting Started

A guide to the different us er interf aces of the protec tion rela y descr ibing ho w to st art using it . This section provides detailed information regarding the communication interfaces of the relay, including a detailed description of how to access the sett ings database stored with in the relay.

P74x/EN IT/N

P74x /EN ST Settings

List of all relay settings, including ranges, step sizes and defaults, together with a brief explanation of each setting.

P74x /EN OP Operation

A comprehensive and detailed functional description of all protection and non-protection functions.

P74x /E N AP Application Notes

This section includes a description of common power system applications of the relay, calculation of suitabl e s etti n gs , some typical worked examples, and how to apply the settings to the relay.

P74x /EN PL Programmable Logic

Overview of the programmable scheme logic and a description of each logical node. This section includes the factory default (PSL) and an explanation of typical applications.

P74x /EN MR Measurements and Recording

Detailed description of the relays recording and measurements functions including the configuration of the event and disturbance recorder and measurement functions.

P74x /EN FD Firmware Design

Overview of the operation of the relay’s hardware and software. This section includes information on the self-checking features and diagnostics of the relay.

P74x /EN CM Commissioning

Instructions on how to commission the relay, comprising checks on the calibration and functionality of the relay.

P74x /EN MT Maintenance

A general maintenance policy for the relay is outlined.

P74x /EN TS Troubleshooting

Advice on how to r ecognize f ailure modes and the re commended co urse of act ion. Includes guidance on who in General Electric to contact for advice.

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Introduction

(IT) 1

MiCOM P741, P742, P743

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P74x /EN SC SCADA Communications

This section provides an overview regarding the SCADA communication interfaces of the relay. Detailed protocol mappings, semantics, profiles and interoperability tables are not provided within this manual. Separate documents are available per protocol, available for download from our website.

P74x /EN SG Symbols and Glossary

List of common technical abbreviations found within the product documentation.

P74x /EN IN Installation

Recommendations on u npacking, handling, inspecti on and storage of the rela y. A guide to the mechanical and electrical installation of the relay is provided, incorporating earthing recommendations. All external wiring connections to the relay are indicated.

P74x /EN VH Firmware and Service Manual Version History

History of all hardware and software releases for the product.

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Introduction

MiCOM P741, P742, P743

(IT) 1-

2. INTRODUCTION TO MiCOM

MiCOM is a comprehens ive solut ion capab le of meet ing all electr icit y suppl y requirem ents . It comprises a range of components, systems and services from General Electric.

Central to the MiCOM concept is flexibility. MiCOM provides the ability to define an application solution and, through extensive

communication capabilities, integrate it with your power supply control system. The components within MiCOM are:

− P range protection relays;

− C range control products;

− M range measurement products for accurate metering and monitoring;

− S range versatile PC support and substation control packages.

MiCOM products include extensive facilities for recording information on the state and behaviour of the p ower system using dis turbance and fault recor ds. They can also prov ide measurements of the system at regular intervals to a control centre enabling remote monitoring and control to take place.

P74x/EN IT/N

For up-to-date inform ation on an y MiCOM pro duc t, vis it our webs ite: www.gegridsolutions.com

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Introduction

(IT) 1

MiCOM P741, P742, P743

•

• •

• • •

• •

• • •

• - •

-6

3. PRODUCT SCOPE

The P74x differential busbar protection relays have been designed for the protection of a wide range of subs tation b usbars f rom distr ibution t o transm ission vo ltage le vels. The r ela ys include a comprehens ive range of non-pro tection features to a id with system dia gnosis and fault analysis. The P74x offers integral b iased diff erential bus bar, br eak er failure, dead zo ne, overcurrent and earth-fault protection and is suitable for application on solidly grounded, impedance grounded, Petersen coil grounded and isolated systems. The relays are especially suitable where a complete scheme solution is required. The scheme comprises of three relays:

• The P741 (Central Unit),

• The P742 and P743 (Peripheral Units).

Which, together with the topology configuration software and the dynamic synoptic monitoring tool, allow full flexibility for all configurations.

3.1 Functional overview

The P74x Busbar protection contains a wide variety of protection func tions. The protection features are summarized below:

Protection Functions Overview

ANSI IEC 61850 Function P741 P742 P743

87BB / P PhsPDIF Phase segregated biased current differential high speed and

87CZ / P CzPPDIF Check Zone segregated biased phase current differential

87BB / N NeuPDIF Sensitive earth fault bias current controlled busbar protection 87 CZ/ N CzNPDIF Check Zone segregated biased earth current controlled

50 / 51 / P OcpPTOC Phase overcurrent protection (2 stages) 50 / 51 / N EfmPTOC Eart h overc urrent protecti on (2 st ages) -

50ST / P DzpPhsPTOC Dead zone phase protection (short zone between CTs and

50ST / N DzpEfmPTOC Dead zone earth protection (short zone between CTs and

CTS Current transformer supervision

50BF RBRF Breaker failure protection (LBB)

ISL Isolator discrepancy alarm Fibre optic signalling channel OptGGIO Digital inputs (according to product) * 8 8/16 16/24 RlyGGIO Output relays (according to product) * 8 8/12 12/16/20 High Break relays (according to product) * 4 4/8 Virtual Digital inputs (via fibre communication) 16 16 16 Virtual Output relays (via fibre communication) 16 16 16 Front communication port (RS232) Rear communication port (Kbus/EIA(RS)485) Second Rear communication port (Kbus/EIA(RS)485) Rear communication port (Ethernet) * Option - Option Time synchronisation port (IRIG-B) * Option Via CU Via CU Redundant Ethernet port Option - Option FnkGGIO Function keys 10 - 10 LedGGIO Programmable tri-colour LEDs 18 - 18

* Refer to the data sheet for model selection

delayed busbar protection

high speed and delayed busbar protection

busbar protection

open CBs)

- -

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Introduction

MiCOM P741, P742, P743

(IT) 1-

The P74x supports the following relay management functions in addition to the functions illustrated above.

• Trip circuit and coil supervision

• 4 Alternative setting groups

• Programmable function keys (P741 and P743)

• Control inputs

• Programmable scheme logic

• Programmable allocation of digital inputs and outputs

• Sequence of event recording

• Comprehensive disturbance recording (waveform capture)

• Fully customizable menu texts

• Multi-level password protection

• Power-up diagnostics and continuous self-monitoring of relay

P74x/EN IT/N

Application overview

FIGURE 1: FUNCTIONAL DIAGRAM

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Introduction

(IT) 1

MiCOM P741, P742, P743

Information Required wit h O rder

Variants

P741 Bus bar P rot ect ion Rel ay P741

Vx Aux Rating

24 - 48 Vdc 7 48 - 125 Vdc (40 - 100 V ac ) 8 110 - 250 Vdc (100 - 240 V ac ) 9

Communication Boa rds

1 communic ation board (1 to 4 Peripheral Unit) 1 2 communic ation board (to 8 Peripheral Unit) 2 3 communic ation board (to 12 Peripheral Unit) 3 4 communic ation board (to 16 Peripheral Unit) 4 5 communic ation board (to 20 Peripheral Unit) 5 6 communic ation board (to 24 Peripheral Unit) 6 7 communic ation board ( to 28 Peripheral Unit) 7

Hardware Options

St andard - None 1 IRIG-B Only (m odulated) 2 IRIG-B (Demodulated) C Et hernet (100 M bi t s/s) wit hout IRIG-B 6 Et hernet (100M bi t /s) pl us IRIG-B (Modulat ed) A Et hernet (100M bi t /s) pl us IRIG-B (Un-modulated) B 2nd Rear Port & Int erM iCOM E 2nd Rear Port & Int erM iCOM & IRIG-B (Modulat ed) F Redundant Ethernet S el f-Healing Ri ng, 2 m ul ti-mode fibre port s + M odul at ed IRIG-B G Redundant Ethernet S el f-Healing Ri ng, 2 m ul ti-mode fibre port s + Un-modul at ed IRIG-B H Redundant Ethernet RS TP, 2 m ul ti-mode fibre port s + M odul ated IRIG-B J Redundant Ethernet RS TP, 2 m ul ti-mode fibre port s + Un-m odul at ed IRIG-B K Redundant Ethernet Dual-Hom i ng S tar, 2 m ul t i -m ode fibre port s + M odul ated IRIG-B L Redundant Ethernet Dual-Hom i ng S tar, 2 m ul t i -m ode fibre port s + Un-m odulated IRIG-B M

Redundant Ethernet P RP /HSR, 2 fibre port s + M odul ated IRIG-B N

Redundant Ethernet P RP /HSR, 2 fibre port s + Unm odul at ed IRIG-B P

Product Specific

Fixed A

Protocol Options

K-Bus/Courier IEC60870-5-103 (Via K ITZ274) Courier (K-Bus), IEC60870-5-103 via KITZ274 (Supplied as Courier. KITZ274 to be ordered) Addit i onal IE C61850

Mounting

Panel M ounting, with harsh environment coati ng M

Language

Mult i l i ngual - E ngl i sh, F renc h, German, Spanis h 0 Mult i l i ngual - E ngl i sh, F renc h, German, Russi an 5

Sof twa re Issue

Unless specified t he l atest version will be del i vered **

Customisation

Default 0 Cust om er s pecific A Central Net work s Version 5

Design Suffix

Order Number

-8

3.2 Ordering options Information Required with Order

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Introduction

MiCOM P741, P742, P743

Information Required with Order

Variants

P742 Busbar P rot ect i on P eri pheral Uni t (40TE) P742

Vx Aux Rating

24 - 54Vdc 7 48 - 125Vdc (40 - 100V ac) 8 110 - 250Vdc (100 - 240V ac) 9

Hardw a re Options

W i t hout CT Input 0 W i t h In = 1/ 5A CT Input 1

Hardw a re Options

St andard - None 1

Product Specific

8 Relay s O ut puts and 16 St at us Inputs A 8 Relay s O ut puts , 4 High B reak and 8 S t atus Input s B

Protocol Options

K-Bus/Courier IEC60870-5-103 (Via K ITZ274)

Mounting

Flush P anel Mount ing, with Harsh Environment Coating M

Language

Multil i ngual - E ngl i sh, French, Germ an, S panish 0 Multil i ngual - E ngl i sh, French, Germ an, Rus s i an 5

Softw are Issue

Unles s specified t he l ates t versi on wil l be del i vered **

Customisation

Default 0 Cust om er spec i fic A Central Net work s V ersion 5

Design Suffix

Order Number

(IT) 1-

P74x/EN IT/N

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Introduction

(IT) 1

MiCOM P741, P742, P743

Information Required wit h O rder

Variants

P743 Busbar P rotec t i on Peripheral Unit (60TE) P743

Vx Aux Rating

24 - 54Vdc 7 48 - 125Vdc (40 - 100V ac) 8 110 - 250Vdc (100 - 240V ac)

Hardware Options

Wi thout CT Input 0 Wi th In = 1/ 5A CT Input 1

IEC 61850-9-2LE Sam pl ed Analogue V al ues Ethernet board *

Hardware Options

St andard - None 1 Et hernet (100 M bi t s/ s) without IRIG-B

2nd Rear Port & Int erM i COM & IRIG-B (Modul ated)

E Redundant Ethernet Self-Healing Ring, 2 mul t i -m ode fibre port s + M odul ated IRIG-B G Redundant Ethernet Self-Healing Ring, 2 mul t i -m ode fibre port s + Un-m odul at ed IRIG-B

H Redundant Ethernet RS TP, 2 multi-m ode fibre port s + Modul ated IRIG-B J Redundant Ethernet RS TP, 2 multi-m ode fibre port s + Un-modulated IRIG-B

K Redundant Ethernet Dual -Homi ng S tar, 2 m ul ti-mode fibre ports + Modul at ed IRIG-B

L Redundant Ethernet Dual -Homi ng S tar, 2 m ul ti-mode fibre ports + Un-modulated IRIG-B M

Redundant Ethernet PRP/ HS R, 2 fibre ports + Modul ated IRIG-B

Redundant Ethernet PRP/ HS R, 2 fibre ports + Unmodul at ed IRIG-B

Product Specific

16 Relays Out put s and 24 S t atus Inputs ** A

16 Relays Out put s, 4 High Break and 16 Status Inputs B 8 Relays Out put s, 4 High Break and 24 Status Inputs C 8 Relays Out put s, 8 High Break and 16 Status Inputs D

Protocol Options

K-Bus/Courier IEC60870-5-103 (Via K ITZ274) Courier (K-Bus), IE C60870-5-103 via KITZ274 (Supplied as Courier. KITZ274 to be ordered) Additional IE C61850

Mounting

Panel M ounting, wi t h Hars h Environment Coati ng M

Language

Mult i l i ngual - E ngl i sh, F rench, Germ an, Spani sh 0 Mult i l i ngual - E ngl i sh, F rench, Germ an, Russian 5

Sof tw are Issue

Unless s pecified t he l atest version will be del i vered **

Customisation

Default 0 Cust om er speci fic A Central Net work s Version 5

Design Suffix

* Only available wit h '60' s oftware

** 21 Relay Output s and 24 Status Inputs For S uffix 'B ' devices

Order Number

-10

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Technical Data

MiCOM P74

1, P742, P743

P74x/EN TD/N

TECHNICAL DATA

Hardware Suffix: J and K Software Version: 51

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Technical Data

1, P742, P743

MiCOM P74

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Technical Data

MiCOM P74

1, P742, P743 (TD) 2-

Technical Data

Mechanical Specification

Design

Modular Px40 platform relay: P741: Size 16“ case (80TE) P742: Size 8“ case (40TE) P743: Size 12“ case (60TE) Mounting is front of panel flush mounting.

Enclosure Protection

Per IEC 60529: 1992: IP 52 Protection (front panel) against dust and dripping water, IP 50 Protection for the rear and sides of the case against dust, IP 10 Product safety protection for the rear due to live connections on the terminal block

Weight

P741 with 7 comm. boards 7.4 kg with 1 comm. board 6.2 kg P742 7.5 kg P743 9.2 kg

P74x/EN TD/N

Front Download/Monitor Port

EIA RS232, 25 pin D-type female connector. For firmware downloads. PEB* rated circuit.

Rear Communications Port

K-Bus/EIA (RS)485 signal levels, two wire Connections located on general pur p os e block, M4 screw. For screened twisted pair cable, multidrop, 1000 m max. Courier protocol SELV* rated circuit

Optional Second Rear Communication Port

EIA(RS)232, 9 pin D-type female connector, socket SK4. Courier protocol: K-Bu s, EI A( RS) 2 3 2, or EIA(RS)485 connection. Maximum cable run length: 15m.

Optional Rear EIA(RS)232 InterMiCOM Port

For “MODEM” InterMiCOM teleprotection schemes. EIA(RS)232, 9 pin D-type female connector, socket SK5. Isolation to SELV* level. Maximum cable run length to MODEM 15m.

Terminals

AC Current and Voltage Measuring Inputs

P742 and P743 only Located on heavy duty (black) terminal block: Threaded M4 terminals, for ring lug connection. CT inputs have integral safety shorting, upon removal of the terminal block.

General Input/Output Terminals

For power supply, opto inputs, output contacts and COM1 rear communications. Located on general purpose (grey) blocks: Threaded M4 terminals, for ring lug connection.

Case Protective Earth Connection

Two rear stud connections (2 P741, 1 P742/3), threaded M4. Must be earthed (grounded) using the protective (earth) conductor for safety, minimum wire size 2.5mm

Front Port Serial PC Interface

EIA RS232 DTE, 9 pin D-type female connector. Courier protocol for interface to S1 software. PEB* rated Maximum cable length 15 m.

Optional Rear IRIG-B Interface modulated or un-modulated

P741 only (P742 & P743 synchronized by the P741) BNC socket SELV* rated circuit 50 ohm coaxial cable.

*: PEB = Protective equipotential bon ded *: SELV = Safety/Separated extra low voltage Both PEB and SELV circuits are safe to touch after a single fault condition.

Optical Fiber Connection

BFOC 2.5 (ST®) interface for multi-mode glass fibre type 62.5/125 µm, as per IEC 874-10, 850 nm short-haul fibres, one Tx and one Rx. Optical budget: 5.6 dB Data rate:2.5 Mbits Max Length: 1000 m

Optional Rear Ethernet Connection for IEC 61850 10BaseT / 100BaseTX Communications

Interface in accordance with IEEE802.3 and IEC61850 Isolation: 1.5kV Connector type: RJ45 Cable type: Screened Twisted Pair (STP) Max. cable length: 100m

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P74

Technical Data

(TD) 2

1, P742, P743

Parameter

Sym

Min.

Typ.

Max

Unit

Output Optical Power BOL: 62.5/125 µm, NA = 0.275 Fiber EOL

Output Optical Power BOL: 50/125 µm, NA = 0.20 Fiber EOL

Optical Extinction Ratio

–10 % dB

Output Optical Power at Logic “0” State

(“0”)

avg.

Input Optical Power Minimum at Window Edge

Min.

Input Optical Power Minimum at Eye Center

Min.

Input Optical Power Maximum

dBm

100 Base FX Interface

Interface in accordance with IEEE802.3 and IEC61850 Wavelength: 1300nm Fiber: multi-mode 50/125µm or 62.5/125µm Connector style: BFOC 2.5 -(ST®)

Optional Rear redundant Ethernet connection for IEC 61850

100 Base FX Interface

Interface in accordance with IEEE802.3 and IEC61850 Wavelength: 1300nm Fiber: multi-mode 50/125µm or 62.5/125µm Connector style: BFOC 2.5 -(ST®) Transmitter optical characteristics 100 base FX interface

Transmitter Optical Characteristics – 100 base FX interface (TA = 0°C to 70°C, VCC = 4.75 V to 5.25 V)

BOL – Beginning of life EOL – End of life

Receiver Optical Characteristics – 100 base FX interface

A = 0°C to 70°C, VCC = 4.75 V to 5.25 V)

Fiber defect connector (watchdog relay) – Redundant Ethernet board Connector (3 terminals): 2NC contacts Rated voltage: 250 V Continuous current: 5 A Short duration current: 30 A for 3 s

Breaking capacity

Subject to maxima of 5 A and 250 V

x/EN TD/Na7

-4 MiCOM P74

Ratings

AC Measuring Inputs

Nominal frequency: 50 and 60 Hz (settable) Operating range: 45 to 65 Hz Phase rotation: ABC or ACB

AC Current

Nominal current (In): 1 and 5 A dual rated. (1A and 5A inputs use different transformer tap connections, check correct terminals are wired). Nominal burden per phase

1 A: <0.04VA at rated current

Impedance per phase

1 A: <40mΩ over 0 - 30In

Nominal burden per phase

5 A: <0.15VA at rated current

Impedance per phase

5 A: <8mΩ over 0 - 30In Thermal withstand: continuous 4 In for 10 s: 30 In for 1 s; 100 In Linear to 64 In (non-offset AC current).

–19

OUT

–20

–16.8 –14

dBm

avg.

Power supply

Parameter Sym Min. Typ. Max. Unit

–22.5

OUT

–23.5

OUT

(W)

(C)

Max.

–45

–33.5 –31

–34.5 –31.8

–14 –11.8

–20.3 –14

dBm

avg.

dBm

avg.

dBm

avg.

DC: 50 W resistive DC: 25 W resistive AC: 1500 VA resistive (cos φ = un i ty) AC: 1500 VA inductive (cos φ = unity)

Auxiliary Voltage (Vx)

Three ordering options: (i) Vx: 24 to 48 Vdc (ii) Vx: 48 to 110 Vdc,

and 40 to 100 Vac (rms.)

(iii) Vx: 110 to 250 Vdc,

and 100 to 240 Vac (rms.).

Operating Range

(i) 19 to 65 V (dc only for this variant) (ii) 37 to 150 V(dc), 32 to 110 V (ac) (iii) 87 to 300 V(dc), 80 to 265 V (ac). With a tolerable ac ripple of up to 12 % for a dc supply, per IEC 60255-11: 1979.

Nominal Burden

Quiescent burden:

P741: 37 to 41 W P742: 16 to 23 W

P743: 22 to 32 W Additions for energised binary inputs/outputs: Per opto input:

0.09 W…(24 to 54 V),

0.12 W…(110/125 V),

0.19 W…(220/250 V). Per energised output relay: 0.13 W Per energised high break output relay: * 0.73W

Power-up Time

Time to power up < 30 s.

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Technical Data

MiCOM P74

1, P742, P743 (TD) 2-

Power Supply Interruption

Per IEC 60255-11: 1979 The relay will withstand a 20ms interruption in

the DC auxiliary supply, without

de-energising. Per IEC 61000-4-11: 1994 The relay will withstand a 20ms interruption in

an AC auxiliary supply, without de-

energising. Note: the use of a E124 extends these limits

Battery Backup

Front panel mounted Type ½ AA, 3.6 V

Field Voltage Output

Regulated 48 Vdc Current limited at 112 mA maximum output

Digital (“Opto”) Inputs

Universal opto inputs with programmable voltage thresholds. May be energised from the 48 V field voltage, or the external battery supply. Rated nominal voltage: 24 to 250 Vdc Operating range: 19 to 265 Vdc Withstand: 300 Vdc. Nominal pick-up and reset thresholds: Pick-up: approx. 70 % of battery nominal set, Reset: approx. 66 % of battery nominal set. Recognition time: 7 ms

Output Contacts

Standard Contacts

General purpose relay outputs for signalling, tripping and alarming: Rated voltage: 300V Continuous current: 10A Short-duration current: 30A for 3s Making capacity: 250A for 30ms Breaking capacity: DC: 50W resistive DC: 62.5W inductive (L/R = 50ms) AC: 2500VA resistive (cos φ = unity) AC: 2500VA inductive (cos φ = 0.7) Response to command: < 5 ms Durability: Loaded contact: 10 000 operations minimum, Unloaded contact: 100 000 operations minimum.

Fast operation and High Break Contacts

Dedicated purpose relay outputs for tripping: Uses IGBT technology Make and Carry: 30 Amps for 3 sec, 30A @ 250V resistive Carry: 250 Amps dc for 30ms Continuous Carry: 10 Amps dc Break Capacity: – 10A @ 250V resistive (10,000 operations) – 10A @ 250V L/R=40ms

P74x/EN TD/N

Operating time:

<200µs & Reset time: 7.5ms

Watchdog Contacts

Non-programmable contacts for relay healthy/relay fail indication: Breaking capacity: DC: 30 W resistive DC: 15 W inductive (L/R = 40 ms) AC: 375 VA inductive (cos φ = 0.7)

IRIG-B 12X Interface (Modulated) External clock synchronization per IRIG standard 200-98, format B12X. Input impedance 6kΩ at 1000Hz Modulation ratio: 3:1 to 6:1 Input signal, peak-peak: 200mV to 20V

IRIG-B 00X Interface (Un-modulated) External clock synchronization per IRIG standard 200-98, format B00X. Input signal TTL level Input impedance at dc 10kΩ

Environmental Conditions

Ambient Temperature Range

Ambient temperature range Operating temperature range: –25°C to +55°C (or –13°F to +131°F) Storage and transit: –25°C to +70°C (or –13°F to +158°F)

Tested as per IEC 60068-2-1: 2007:

storage (96 hours) –25°C (–13°F) operation (96 hours) –40°C (–40°F)

IEC 60068-2-2: 2007:

storage (96 hours) +85°C (+185°F) operation (96 hours) +85°C (+185°F)

Ambient Humidity Range

Per IEC 60068-2-3: 196 9:

56 days at 93 % relative humidity and +40 °C

Per IEC 60068-2-30: 1980:

Damp heat cyclic, six (12 + 12) hour cycles, 93 % RH, +25 to +55 °C

Corrosive Environments

Per IEC 60068-2-60: 1995, Part 2, Test Ke, Method (class) 3 Industrial corrosive environment/poor environmental control, mixed gas flow test. 21 days at 75% relative humidity and +30°C Exposure to elevated concentrations of H NO

, Cl2 and SO2.

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(TD) 2

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Type Tests

Insulation

Per IEC 60255-5: 2000,

Insulation resistance > 100 MΩ at 500 Vdc (Using only electronic/brushless insulation tester).

Creepage Distances and Clearances

Per IEC 60255-27:2005

Pollution degree 3, Overvoltage category III, Impulse test voltage 5 kV.

High Voltage (Dielectric) Withstand

(EIA RS232 ports excepted). (i) Per IEC 60255-27:2005, 2 kV rms. AC, 1

min. Between all case terminals connected together, and the case earth. Also, between all terminals of independent circuits. 1 kV rms. AC for 1 minute, across open watchdog contacts. 1 kV rms. AC for 1 minute, across open contacts of changeover output relays.

(ii) Per ANSI/IEEE C37.90-1989 (reaffirmed

1994):

1.5 kV rms. AC for 1 minute, across open contacts of changeover output relays.

Impulse Voltage Withstand Test

Per IEC 60255-27: 2005

Front time: 1.2 µs,

Time to half-value: 50 µs, Peak value: 5 kV, 0.5 J Between all terminals, and all terminals and case earth.

Electrical Fast Transient or Burst Requirements

Per IEC 60255-22-4: 2002. Test severity Class III and IV:

Amplitude: 2 kV, burst frequency 5 kHz (Class III), Amplitude: 4 kV, burst frequency 2.5 kHz

(Class IV). Applied directly to auxiliar y suppl y, and appli ed to all other inputs. (EIA RS232 ports excepted).

Electromagnetic Compatibility (EMC)

1 MHz Burst High Frequency Disturbance Test

Per IEC 60255-22-1: 1988, Class III,

Common-mode test voltage: 2.5 kV,

Differential test voltage: 1.0 kV, Test duration: 2 s, Source impedance: 200 Ω (EIA RS232 ports excepted).

Immunity to Electrostatic Discharge

Per IEC 60255-22-2: 1996, Class 4, 15 kV discharge in air to user interface,

display, and exposed metalwork. Per IEC 60255-22-2: 1996, Class 3, 8 kV discharge in air to all communication

ports. 6 kV point contact discharge to any part of

the front of the product.

Page 23

Technical Data

MiCOM P74

1, P742, P743 (TD) 2-

Surge Immunity Test

(EIA RS232 ports excepted). Per IEC 61000-4-5: 2002 Level 4,

Time to half-value: 1.2 / 50 µs, Amplitude: 4 kV between all groups and case earth, Amplitude: 2 kV between terminals of each group.

Immunity to Radiated Electromagnetic Energy

Per IEC 60255-22-3: 2000, Class III:

Test field strength, frequency band 80 to

1000 MHz: 10 V/m, Test using AM: 1kHz / 80%, Spot tests at 80, 160, 450, 900 MHz Per IEEE/ANSI C37.90.2: 1995:

25 MHz to 1000 MHz, zero and 100%

square wave modulated. Field strength of 35 V/m.

Radiated Immunity from Digital Communications

Per EN61000-4-3: 2002, Level 4:

Test field strength, frequency band 800 to

960 MHz, and 1.4 to 2.0 GHz: 30 V/m, Test using AM: 1 kHz / 80%.

Radiated Immunity from Digital Radio Telephones

Per ENV 50204: 1995

10 V/m, 900 MHz and 1.89 GHz.

Immunity to Conducted Disturbances Induced by Radio Frequency Fields

Per IEC 61000-4-6: 1996, Level 3,

Disturbing test voltage: 10 V

Power Frequency Magnetic Field Immunity

Per IEC 61000-4-8: 1994, Level 5,

100 A/m applied continuously,

1000 A/m applied for 3 s. Per IEC 61000-4-9: 1993, Level 5,

1000 A/m applied in all planes. Per IEC 61000-4-10: 1993, Lev el 5,

100 A/m applied in all planes at 100 kHz/1

MHz with a burst duration of 2 s.

Conducted Emissions

Per EN 55022: 1998:

0.15 – 0.5 MHz, 79 dBµV (quasi peak) 66

dBµV (average)

0.5 – 30 MHz, 73 dBµV (quasi peak) 60

dBµV (average).

Radiated Emissions

Per EN 55022: 1998:

30 – 230 MHz, 40 dBµV/m at 10 m

measurement distance

230 MHz – 1 GHz, 47 dBµV/m at 10 m

measurement distance.

P74x/EN TD/N

EU Directives

EMC Compliance

Per 89/336/EEC:

Compliance to the European Commission Directive on EMC is claimed via the Technical Construction File route. Product Specific Standards were used to establish conformity:

EN50263: 2000

Product Safety

Per 2006/95/EC: Compliance with European Commission Low Voltage Directive. Compliance is demonstrated by reference to generic safety standards: IEC 60255-27:2005 EN 60255-5:2001.

Mechanical Robustness

Vibration Test

Per IEC 60255-21-1: 1996 Response Class 2 Endurance Class 2

Shock and Bump

Per IEC 60255-21-2: 1995 Shock response Class 2 Shock withstand Class 1 Bump Class 1

Seismic Test

Per IEC 60255-21-3: 1995 Class 2

Timings and Accuracy

All quoted operating times include the closure of the trip output contact.

Page 24

P74

x/EN TD/Na7

Technical Data

(TD) 2

1, P742, P743

-8 MiCOM P74

Performance Data

Busbar Protection

Busbar fault Accuracy

Pick-up: Setting ± 5% or 20 A up to 8 Pus, or 50 A from 8 Pus, Whichever Is Greater (WIG) Drop-off: >0.95 x Setting or 20 A up to 8 Pus, or 50 A from 8 Pus, WIG Busbar trip:11 ms (min) & 13 ms (typical) at

1.4 x tripping threshold at 50Hz and at 1.7 x tripping threshold at 60Hz

Circuitry fault Accuracy

Pick-up: Setting ± 5% or 20 A up to 8 Pus, or 50 A from 8 Pus, Whichever Is Greater (WIG) Drop-off: >0.95 x Setting or 20 A up to 8 Pus, or 50 A from 8 Pus, WIG DT operation: ±5 % or 40 ms WIG

Dead Zone Protection

Accuracy

Pick-up: Setting ± 5% or 10 mA Whichever Is Greater (WIG) Drop-off: >0.95 x Setting or 10 mA WIG Min. trip level: 1. 05 x Setting ± 5% or 10 mA WIG DT operation: ±5 % or 20 ms WIG

Three phase overcurrent protection

Accuracy

Pick-up: Setting ±5 % or 10 mA Whichever Is Greater (WIG) Drop-off: 0.95 x Setting ±5 % or 10 mA WIG Min. trip level of IDMT elements:

1.05 x Setting ±5 % or 10 mA WIG

IDMT shape: ±5 % or 40 ms WIG (under

reference conditions)* IEEE reset: ±5 % or 40 ms WIG DT operation: ±5 % or 50 ms WIG DT reset: Setting ±5 % or 20 ms WIG Characteristic

UK curves: IEC 60255-3 …1998

US curves: IEEE C37.112 …1996

Earth Fault Protection

Accuracy

Pick-up: Setting ± 5% or 10 mA Whichever Is Greater (WIG) Drop-off: >0.95 x Setting or 10 mA WIG Min. trip level of IDMT elements: 1.05 x Setting ± 5% or 10 mA WIG IDMT characteristic shape: ± 5 % or 40 ms

WIG (under reference conditions)* IEEE reset: ±10 % or 40 ms WIG DT operation: ±5 % or 50 ms WIG DT reset: ± 5% or 50 ms WIG

Transient overreach and overshoot

Accuracy

Additional tolerance due to increas i ng X/R ratios: ± 5% over the X/R ratio of 1 to 90 Overshoot of overcurrent elements: < 40 ms

Programmable scheme logic

Accuracy

Output conditioner timer:

Setting ±2 % or 50ms whichever is greater

Dwell conditioner timer:

Setting ±2 % or 50ms whichever is greater

Pulse conditioner timer:

Setting ±2 % or 50 ms whichever is greater

IRIG-B and Real Time Clock

Modulated IRIG-B:

Modulation ratio: 1/3 or 1/6 Input signal peak-peak amplitude: 200 mV to 20 V Input impedance at 1000Hz: 6000 Ω External clock synchronization: Conforms to IRIG standard 200-98, format B

Un-modulated IRIG-B: Input signal TTL level Input impedance at dc 10kΩ External clock synchronization per IRIG standard 200-98, format B00X.

Performance Accuracy (for modulated and un-modulated versions)

Real time clock accuracy: < ±2 seconds/day

Measurements

Accuracy

Phase current: ±1.0 % of Reading or ±1.0%

CT Ratio (RorCTR)

Phase local current: ±1.0 % of RorCTR

or ±(f-fn)/fn %

Phase remote current: ±1.0 % of RorCTR

or ±(f-fn)/fn % Phase differential current: ±5.0 % Bias current: ±5.0 % Frequency: ±1 %

Disturbance records

Accuracy

Waveshape : Compar abl e with app li ed

quantities Magnitude and relative phases : ±5 % of

applied quantities Duration: ±2 % Trigger position: ±2 %

(minimum trigger 100 ms)

Page 25

Technical Data

MiCOM P74

Output Optical Power BOL: 62.5/125 µm, NA = 0.275 Fiber EOL

Output Optical Power BOL: 50/125 µm, NA = 0.20 Fiber EOL

Optical Extinction Ratio

–10 % dB

Output Optical Power at Logic “0” State

dBm

Input Optical Power Minimum at Window Edge

Min.

Input Optical Power Minimum at Eye Center

Min.

Input Optical Power Maximum

Max.

dBm

avg.

1, P742, P743 (TD) 2-

IEC 61850 Ethernet data

P74x/EN TD/N

Protection functions

10 Base T/100 Base TX Communications

Interface in accordance with IEEE802.3 and IEC61850 Isolation 1.5kV Cable type: Screened twisted pair STP Max length: 100m

100 Base FX Interface

Interface in accordance with IEEE802.3 and IEC61850 Wavelength: 1300nm Fibre: multi-mode 50/125µm or 62.5/125µm Connector style: ST

Transmitter Optical Characteristics

(TA = 0°C to 70°C, VCC = 4.75 V to 5.25 V)

Parameter Sym Min. Typ. Max Unit

–19

OUT

–20

–22.5

OUT

–23.5

OUT

(“0”)

–45

–16.8 –14

–20.3 –14

dBm

avg.

dBm

avg.

BOL – Beginning of life EOL – End of life

Receiver Optical Characteristics

A = 0°C to 70°C, VCC = 4.75 V to 5.25 V)

Parameter Sym Min. Typ. Max. Unit

(W)

(C)

–33.5 –31

–34.5 –31.8

–14 –11.8

dBm

avg.

dBm

avg.

Note: The 10BaseFL connection will no longer be supported as IEC 61850 does not specify this interface

Reference conditions

Ambient temperature: 20 °C

Frequency Tracking Range

45 to 65 Hz

Global Settings (System Data)

Language: English/Frenc h/ G erm an/Spa nis h Frequency: 50/60 Hz

Common conventional ratios (CU)

Primary basis current (virtual) Ibp: 1000A

Current transformers (PU)

Phase CT Primary: 1…30.000A (step 1A) Phase CT Secondary In: 1A or 5A

Phase Fault elements (CU)

Phase current slope adjustment

k2: 0.20…0.90 (step 0.1)

Phase differential current threshold

ID>2: 50A…30kA (step 10A)

Check Zone slope adjustment

kCZ: 0.00…0.90 (step 0.01)

Check Zone differential current threshold

IDCZ >2: 50A…30kA (step 10A)

Circuitry fault slope adjustment

ID>1: 10…500A (step 10A)

Circuitry fault threshold

k1: 0.00…0.50 (step 0.01)

Circuitry fault alarm timer

ID>1 tCF: 0.1…600.0s (step 0.1s)

Sensitive earth fault

Option for high neutral impedance:

Disabled/Enabled

Threshold for sensitive Earth fault with flowing

current control: IbiasPh>Cur.: 50A…30kA (step 10A)

Residual current slope adjustment

kN2: 0.00…0.90 (step 0.01)

Residual differential current threshold:

IDN>2: 10A…30kA (step 10A)

Residual Check Zone current slope adjustment

kNCZ: 0.00…0.90 (step 0.01)

Residual Check Zone differential current

threshold: IDNCZ>2: 10A…30kA (step 10A)

Circuitry fault slope adjustment

kN1: 0.00…0.50 (step 0.01)

Circuitry fault threshold:

IDN>1: 10…500A (step 10A)

Circuitry fault alarm timer

IDN>1 tCF: 0.1…600.0s (step 0.1s)

Breaker failure

Accuracy Reset time = 25 ms from: start to [(TBF2 or TBF4) - 30ms] = 15 ms from: [(TBF2 or TBF4) - 30ms] to [TBF2 or TBF4] ±2 % or 10 ms whichever is greater Thresholds: settings ±5 % or 10 mA Whichever Is Greater

Page 26

P74

x/EN TD/Na7

Technical Data

(TD) 2

1, P742, P743

-10 MiCOM P74

Current transformer and feeder characteristics

Class: 5P (IEC185) X (BS3958) TPX (IEC 44-6) TPY (IEC 44-6) TPZ (IEC 44-6) Min. Knee point voltage (BS 3958):

Vk: 100/I

V…5k/In V (step 10/In V)

Rated Burden (IEC 44-6):

S: 5VA…100VA (step 1VA)

Rated Resistive Burden (IEC 44-6):

5…100/I

Ω (step 1/I

Ω)

rRB: data calculated from rated burden Rated short-circuit current factor:

Kscc: 10…50 (step 5)

Secondary resistance (Ω)

: 0.1…50.0 Ω (step 0.1Ω)

External loop resistance Eff. Burden (Ω):

RB: 0.1…200.0/ I

Ω (step 1/ I

Ω)

External loop resistance Eff. Burden VA

(Data calculated from Eff. Burden Ohm)

Blocking of 87BB on phase-phase feeder fault

for external ph-ph fault detection - (>1.5 max ph-ph fault current infeed) with Ultra high speed detection <1 ms: I>BB: 0.05…4×I

(step 0.01×In)

Blocking of 87BB on earth/feeder fault

(external earth fault detecti on) - (>1.5 max earth fault current infeed. Ultra high speed detection required <1 ms): IN>BB: 0.05…4×I

(step 0.01×In)

Supervision of I0 calculation

Kce: 0.01…1.00 (step 0.01)

I0 error alarm time delay

Tce: 0.0…10.0s (step 0.1s) I0 supervision blocking : 87BB (P&N) / N on e CTS Timer alarm : 0.1s…10.0s (step 0.1s) Note: I

is the CT nominal current

Dead Zone protection (PU)

Phase threshold

I>DZ: 0.05…4.00×I Time delay: 0.00…100.00s (step 10ms) Dead Zone Earth: Disabled/Enabled Neutral threshold:

IN>DZ: 0.05…4.00×I Time delay: 0.00…100.00 s (step 10ms) Note: I

is the CT nominal current

(step 0.01×In)

Breaker failure protection (PU)

Caution: the following current set values are expressed in multiple of the local CT’s nominal rated current Inp (primary) or Ins (secondary).

Breaker Failure

phase O/C threshold

(dead pole detection for 50BF): I<: 0.05…4.00×I

Confirmation I>: Disabled/Enabled

phase O/C threshold:

I>: 0.05…4.00×I

Confirmation IN>: Disabled/Enabled

residual O/C threshold:

IN>: 0.05…4.00×I

Timers for 50BF internal tripping

CB fail 1 timer:

tBF1: 0.00…10.00s (step 10ms)

CB fail 2 timer:

tBF2: 0.00…10.00s (step 10ms)

Timers for 50BF external tripping (orders from 21 or 87T etc.)

CB fail 3 timer:

TBF3: 0.00…10.00 s (step 10ms)

CB fail 4 timer:

TBF4: 0.00…10.00 s (step 10ms)

Overcurrent Protection (PU)

Phase Fault Protection (50/51)

3 phase Overcurrent Function Status I>1:

0. Disabled

1. DT

2. IEC S Inverse

3. IEC V Inverse

4. IEC E Inverse

5. UK LT Inverse

6. IEEE M Inverse

7. IEEE V Inverse

8. IEEE E Inverse

9. US Inverse

10. US ST Inverse

If “function status” ≠0

I>1 Current Set: 0.10…32.00×In (step 0.01×In)

If “function status” =1

I>1 Time delay: 0.00…100.00s (step 10ms)

If ”function status” ≤5

I>1: 0.025…1.200 (step 0.025)

(step 0.01×In)

If “function status” ≥6

I>1 time Dial: 0.5…15.0 (step 0.1) I>1 Reset Char: DT or inverse

If ”function status” ≤5 or “I>1 Reset Char.”=DT and “function status” ≥6

I>1: 0.0…100.0 (step 0.1)

Page 27

Technical Data

MiCOM P74

1, P742, P743 (TD) 2-

I>2 Function: Disabled, 87BBP&N blocking, High Set I>2,

I>2 & 87BBP&N, 87BB/P blocking, 87BB/N blocking, I>2 & 87BB/P or I>2 & 87BB/N

I>2 Current Set (if “I>2 function” enabled)

0.10…32.00×In (step 0.01×In)

If “I>2 function” = high set I>2

I>2 Time Delay: 0.00…100.00s (step 10ms)

If “I>2 function” = 87BB (P and/or N)

I>2 Time Delay: 0.2…6.00s (step 0.1s)

Earth Fault Protection (50N/51N)

Residual Overcurrent Function Status IN>1:

0. Disabled

1. DT

2. IEC S Inverse

3. IEC V Inverse

4. IEC E Inverse

5. UK LT Inverse

6. IEEE M Inverse

7. IEEE V Inverse

8. IEEE E Inverse

9. US Inverse

10. US ST Inverse

If “function status” ≠0

“IN >1 current set”: 0.10…32.00×In (step 0.01×In)

If “function status” =1

“IN >1 Time delay”: 0.00…100.00s (step 10ms)

If “function status” ≤5

“IN >1 TMS”: 0.025…1.200 (step 0.025)

If “function status” ≥6

“IN >1 Time Dial”: 0.5…15.0 (step 0.1) “IN >1 Reset Char”: DT or Inverse

If “function status” ≤5 or “IN>1 Reset Char.”=DT & “function status” ≥6

IN >1 tReset: 0.0…100.0 (step 0.1)

P74x/EN TD/N

CB Control (PU)

Prot Trip Pulse: 0.05…2.00s (step 10mss) Trip Latched: Disabled/Enabled Rest Trip Latch: Yes/No CB Control by: Disabled, Local and/or Remote and /or Opto Man Close Pulse: 0.1…10.0s (step 10ms) Man Trip Pulse: 0.1…5.0s (step 10ms) Man Close Delay: 0…600s (step 10ms) 87BB Trip Delay: 0…400ms (step 5ms) CB Superv Timer: 10…400ms (step 5ms)

Date and Time

IRIG-B Sync: Disabled/Enabled Battery Alarm: Disabled/Enabled LocalTime Enable: Disabled/Fixed/Flexible DST Enable: Disabled/Enabled

Configuration

Setting Group: Select via Menu or Select via Opto Active Settings: Group 1/2/3/4 Setting Group 1: Disabled/Enabled Setting Group 2: Disabled/Enabled Setting Group 3: Disabled/Enabled Setting Group 4: Disabled/Enabled

CU Only

Diff Busbar Prot: Disabled/Enabled – Differential phase fault – Sensitive earth fault

PU Only

Dead Zone Prot: Disabled/Enabled CB Fail & I>: Disabled/Enabled BB Trip Confirm: Disabled/Enabled Overcurrent Prot: Disabled/Enabled Earth Fault Prot: Disabled/Enabled

CU & PU

Setting Values: Primary/Secondary LCD Contrast: (Factory pre-set)

IN >2 Function:

Disabled, 87BBP&N blocking, High Set I>2, I>2 & 87BBP&N, 87BB/P blocking, 87BB/N blocking, I>2 & 87BB/P or I>2 & 87BB/N

IN>2 Current Set (if “IN>2 function” enabled):

0.10…32.00 xIn (step 0.01×In)

If “IN>2 function” = high set I>2

IN>2 Time Delay:

0.00…100.00s (step 10ms)

If “IN>2 function” = 87BB (P and/or N)

IN>2 Time Delay: 0.2…6.00 s (step 0.1s)

Page 28

P74

x/EN TD/Na7

Technical Data

(TD) 2

1, P742, P743

-12 MiCOM P74

Measurements and records List

Fault Recorder

Records for the last 5 faults

Central Unit:

• Active Setting group

• Faulty phase

• Protection started/operated (87BB, 50BF,

Dead Zone…)

• Fault occurrence time and duration

• Check Zone values (Diff. & Bias for A, B, C,

• Faulty zone(s)

• Topology prior the fault occurrence

Peripheral Unit:

• Active setting group

• Indication of the tripped phases

• Protection started/operated (87BB, 50BF,

Dead Zone…)

• Relay Trip Time and duration

• Relay Trip Time

• Faulty phase currents (A, B, C, N)

Event Recorder

Records for the last 512 events

Communications

RP1 Protocol: Courier RP1 Address (courier): 6…34 Inactivity Timer: 1…30 minutes RP1 Port Config (Courier):

K Bus / EIA485 (RS485) RP1 Comms Mode (EIA485 (RS485)): IEC60870 FT1.2 Frame 10-Bit NoParity RP1 Baud Rate (EIA485 (RS485)): 9600 / 19200 / 38400 bits/s RP1 Read Only: Disabled/Enabled

Optional Second Rear Communication

RP2 Protocol: Courier (fixed) RP2 Port Config: Courier over EIA(RS)232 Courier over EIA(RS)485 K-Bus RP2 Comms. Mode: IEC60870 FT1.2 Frame 10-Bit NoParity RP2 Address: 0…255 RP2 InactivTimer: 1…30mins RP2 Baud Rate: 9600 / 19200 / 38400 bits/s RP2 Read Only: Disabled/Enabled

Oscillography (Disturbance Recorder)

Central Unit:

Duration: Fixed value 1.2 s Trigger Position: 0…100% (step 33.3%) Analogue Channel 1: (up to 8) Digital Input 1: (up to 32)

Peripheral Unit:

Duration: Settable from 1.2 to 10.5s Trigger Position: 0…100% (step 0.1%) Trigger Mode: Single / Extended Analogue Channel 1: (up to 4): Digital Input 1: (up to 32): Selected binary channel assignment from

any DDB status point within the relay (opto input, output contact, alarms, starts, trips, controls, logic…).

Sampling frequency: 600Hz

Optional Ethernet Port

NIC Tunl Timeout: 1…30mins NIC Link Report: Alarm / Event / None NIC Link Timeout: 0.1…60s NIC Read Only: Disabled/Enabled

Page 29

Technical Data

MiCOM P74

1, P742, P743 (TD) 2-

COMMISSION TESTS

Monitor Bit 1(up to 8): Binary function link strings, selecting which

DDB signals have their status visible in the Commissioning menu, for test purposes

Test Mode: (CU)

Test Mode: Enabled or Out of Service

• 87BB trip blocked but 50BF (back trip) enable per zone

• 87BB and 50BF trip blocked per zone

• All the protections (87BB, Dead Zone,

General 50BF, Local 50BF, O/C) disabled

• 87BB disable but 50BF (back trip) enable for all zones

Test Mode: (PU)

Test mode: Disabled / 50BF Disabled /

Overhaul

Test Pattern: Configuration of which output contacts are

to be energised when the contact test is applied.

Static Test Mode: Disabled/Enabled Opto input voltage range: 24-27 V 30-34 V 48-54 V 110-125 V 220-250 V Custom Opto Input 1

(up to # = max. opto no. fitted)

Custom options allow independent

thresholds to be set per opto, from the same range as above

Filter Control:

P74x/EN TD/N

Opto Input Labels

Opto Input 1 up to: 8 for P741 16 for P742 24 for P743 User defined text string to describe the

function of the particular opto input.

Outputs Labels

Relay 1 up to: 8 for P741 & P742 16 for P743 User defined text string to describe the

function of the particular relay output contact.

IED CONFIGURATOR

Switch Conf.Bank: No Action / Switch Banks

IEC61850 GOOSE

GoEna: Disabled/Enabled Test Mode: Disabled / Enabled VOP Test Pattern: 0x00000000 / 0xFFFFFFFF Ignore Test Flag: No/Yes

Page 30

P74

x/EN TD/Na7

Technical Data

(TD) 2

1, P742, P743

-14 MiCOM P74

Page 31

Getting Started

P74x/EN GS/Na7

MiCOM P741, P742, P743

GETTING STARTED

Hardware Suffix: J and K Software Version: 51

Page 32

P74x/EN GS/Na7

Getting Started

MiCOM P741, P742, P743

Page 33

Getting Started

P74x/EN GS/Na7

MiCOM P741, P742, P743

(GS) 3-

CONTENTS

1. GETTING STARTED 3

1.1 User interfaces and menu structure 3

1.2 Introduction to the relay 3

1.2.1 Front panel 3

1.2.2 Relay rear panel 9

1.3 Relay connection and power-up 11

1.4 Introduction to the user interfaces and settings options 11

1.5 Menu structure 12

1.5.1 Protection settings 13

1.5.2 Disturbance recorder settings 13

1.5.3 Control and support settings 13

1.6 Password protection 13

1.7 Relay configuration 14

1.8 Front panel user interface (keypad and LCD) 14

1.8.1 Default display and menu time-out 15

1.8.2 Menu navigation and setting browsing 16

1.8.3 Hotkey menu navigation 16

1.8.4 Password entry 17

1.8.5 Reading and clearing of alarm messages and fault records 17

1.8.6 Setting changes 18

1.9 Front communication port user interface 18

1.9.1 Front courier port 20

1.10 S1 Agile relay communications basics 20

1.10.1 Off-line use of S1 Agile 21

2. CO NFIGURING THE ETHERNET INTERFACE 22

2.1 Configuring the Ethernet Interface for IEC 61850 22

3. CO NFIGURING THE REDUNDANT ETHERNET BOARD 24

3.1 Configuring the IED IP Address 24

3.2 Configuring the Board IP Address 24

3.3 RSTP Configuration 25

4. CO NFIGURING THE DATA PROTOCOLS 30

4.1 Courier Configuration 30

4.2 IEC 61850 Configuration 31

4.3 IEC 61850 Configuration 31

4.3.1 IEC 61850 Configuration Banks 32

4.3.2 IEC 61850 Network Connectivity 32

5. P RP/HSR CONFIGURATOR 33

5.1 Connecting the IED to a PC 33

5.2 Installing the Configurator 33

5.3 Starting the Configurator 33

5.4 PRP/HSR device identification 34

5.5 Selecting the device mode 34

Page 34

P74x/EN GS/Na7

Getting Started

(GS) 3

MiCOM P741, P742, P743

-2

5.6 PRP/HSR IP Address Configuration 34

5.7 SNTP IP Address Configuration 34

5.8 Check for connected equipment 34

5.9 PRP Configuration 34

5.10 HSR CONFIGURATION 35

5.11 Filtering Database 35

5.12 End of session 36

FIGURES

FIGURE 1: RELAY FRONT VIEW (EXAMPLE FOR P742 – 40 TE) 3 FIGURE 2: RELAY FRONT VIEW (EXAMPLE FOR P743 – 60 TE) 4 FIGURE 3: P742 RELAY REAR VIEW 40 TE 9 FIGURE 4: P743 RELAY REAR VIEW 60 TE 10 FIGURE 5: P741 RELAY REAR VIEW 80 TE 10 FIGURE 6: MENU STRUCTURE 12 FIGURE 7: FRONT PANEL USER INTERFACE 15 FIGURE 8: HOTKEY MENU NAVIGATION 17 FIGURE 9: FRONT PORT CONNECTION 19 FIGURE 10: PC – RELAY SIGNAL CONNECTION 20 FIGURE 11: IED AND REB IP ADDRESS CONFIGURATION 24 FIGURE 12: REB ADDRESS SWITCHES (SW2) 25

Page 35

Getting Started

P74x/EN GS/Na7

MiCOM P741, P742, P743

1. GETTING STARTED

BEFORE CARRYING OUT ANY WORK ON THE EQUIPMENT, THE USER

SHOULD BE FAMILIAR WITH THE CONTENTS OF THE SAFETY SECTION/SAFETY GUIDE PXXX-4LM-2 OR LATER ISSUE, THE TECHNICAL DATA SECTION AND THE RATINGS ON THE EQUIPMENT RATING LABEL.

1.1 User interfaces and menu structure

The settings and f unctions of the pr otection r elay can be access ed both f rom the front pan el keypad and LCD, and via the front and rear com munication ports. Information on each of these methods is given in this section to describe how to start using the relay.

1.2 Introduction to the relay

1.2.1 Front panel

The front panel of the rela y is shown in F igure 1 (P7 42) or 2 (P741 or P7 43), with the hinge d covers at the top and botto m of the relay shown o pen. Extra ph ysical protection f or the front panel can be provide d by an optional transpare nt front cover. With the co ver in place read only access to the user inte rf ace is pos sible. Rem oval of the c over does not com prom is e the environmental withstand capability of the product, but allows access to the relay settings. When full access to the relay keypad is required, for editing the settings, the transparent cover can be unclipped a nd rem oved when the t op and bottom covers ar e open. If the lo wer cover is secured with a wir e seal, this will need to be rem oved. Using the sid e flanges of the transparent cover, pu ll the bottom edge a way from the relay fr ont panel unt il it is clear of the seal tab. The co ver can then be moved vert ically down to release t he two fixing lugs from their recesses in the front panel.

(GS) 3-

FIGURE 1: RELAY FRONT VIEW (EXAMPLE FOR P742 – 40 TE)

The front panel of the relay includes the following, as indicated in Figure 1:

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• a 16-character by 3-line alphanumeric liquid crystal display (LCD).

• a 9-key keypad com prising 4 arrow keys

clear key (

• 12 LEDs; 4 fixed function LEDs on the left-hand side of the front panel and 8

programmable function LEDs on the right-hand side.

Under the top hinged cover:

• the relay serial number, and the relay’s current and voltage rating information*.

Under the bottom hinged cover:

• battery compartment to hold the

back-up for the real time clock, event, fault and disturbance records.

• a 9-pin female D-t ype front port for comm unication with a PC locall y to the relay (up to

15m distance) via an RS232 serial data connection.

• a 25-pin female D-type port providing internal signal monitoring and high speed local

downloading of software and language text via a parallel data connection.

), a read key () and 2 hot keys ().

( , ,  and  ), an enter key (), a

/2 AA size battery which is used for memory

FIGURE 2: RELAY FRONT VIEW (EXAMPLE FOR P743 – 60 TE)

The front panel of the relay includes the following, as indicated in Figure 2:

− a 16-character by 3-line alphanumeric liquid crystal display (LCD)

− a 19-key keypad comprising 4 arrow keys (, ,  and ), an enter key

(), a clear key (), a read key (), 2 hot keys () and 10 ( − ) programmable function keys

− Function key functionality:

− The relay front panel f eatures control pushbutton s witches with programmable

LEDs that facilitate local control. Factory default settings associate specific relay functions with these 10 direct-action pushbuttons and LEDs e.g. reset indications. Using pr ogram m able sc hem e logic, the us er can rea dil y change t he default direct-action pushbutton functions and LED indications to fit specific control and operational needs .

− Hotkey functionality: When the functionality is disabled:

− SCROLL

Starts scrolling through the various default displays.

− STOP

Stops scrolling the default display.

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When the functionality is disabled:

− For control of setting groups, control inputs and circuit breaker operation

− 22 LEDs; 4 fixed func tion LEDs, 8 tri-colour pro grammable function LEDs on th e left

hand side of the front pane l and 1 0 tr i-colour programm able f unc tion L EDs on t h e r ight hand side associated with the function keys

− Under the top hinged cover:

− The relay serial number, and the relay’s current and voltage rating information

− Under the bottom hinged cover:

− Battery compartm ent to hold the 1/2 AA size bat tery which is used for m emory

back-up for the real time clock, event, fault and disturbance records

− A 9-pin fem ale D -type front port for c om munication with a PC loca lly to the rela y (up to 15m distance) via an EIA(RS)232 serial data connection

− A 25-pin female D-t ype port providing internal signal m onitoring and high s peed local downloading of software and language text via a parallel data connection

(GS) 3-

1.2.1.1 LED indications Fixed Function The 4 fixed function L EDs on the left-hand side of the front panel are used to indicate the

following conditions: Trip (Red) indicates that t he relay has issued a trip signal. It is r eset when the associated

fault record is cleared from the front display. Alarm (Yellow) flashes to indicate that the relay has registered an alarm. This may be

triggered by a fault, event or maintena nce record. The LED will f lash until the alarms have been accepted (read), after which the LED will change to constant illumination, and will extinguish, when the alarms have been cleared.

Out of service (Ye llow) can indicat e that the re lay’s protecti on is unavail able or a test m ode is selected.

Healthy (Green) ind icates that the relay is in correct working order, and should be on at al l times. It will be extin guishe d if the r ela y’s self -test f aciliti es indic ate tha t ther e is an er ror with the relay’s hard ware or softwar e. The state of the health y LED is reflected by the watch dog contact at the back of the relay.

To improve the visibi lity of t he settings via the f ront panel, the LCD c ontrast c an be a djusted using the “LCD Contrast” setting in the CONFIGURATION column. This should only be necessary in very hot or cold ambient temperatures.

Programmable LEDs All the programmable LEDs are tri-colour and can be programmed to indicate RED,

YELLOW or GREEN depe nding on the requir ements. T he 8 programm able LEDs on the lef t are suitable for program ming alarm indicati ons and the defaul t indications and fu nctions are indicated in the table below. The 10 programmable LEDs physically associated with the function keys, are us ed to i ndicate the status of the associated pushbutt on ’s function and the default indications are shown below:

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The default mappings for each of the programmable LEDs are as shown in the following table:

Central Unit P741:

LED

Number

LED Input Connection/Text Latched P74x LED Function Indication

LED1 Red LED1 Yellow LED1 Green LED2 Red LED2 Yellow LED2 Green LED3 Red LED3 Yellow LED3 Green LED4 Red LED4 Yellow LED4 Green LED5 Red LED5 Yellow LED5 Green

Yes

87BB fault on phase A Not used Not used 87BB fault on phase B Not used Not used 87BB fault on phase C Not used Not used 50BF Trip Zone 1 87BB & 50BF Trip Zone 1 87BB Trip Zone 1 50BF Trip Zone 2 87BB & 50BF Trip Zone 2 87BB Trip Zone 2

LED6 Red LED6 Yellow LED6 Green LED7 Red LED7 Yellow LED7 Green LED8 Red LED8 Yellow LED8 Green FnKey LED1 Red FnKey LED1 Yellow FnKey LED1 Green FnKey LED2 Red FnKey LED2 Yellow FnKey LED2 Green FnKey LED3 Red FnKey LED3 Yellow

Zone 1 blocked by itself Zone 1 blocked by Check Zone Zone 1 protected Zone 2 blocked by itself Zone 2 blocked by Check Zone Zone 2 protected Fiber communication Error Fiber communication to change Fiber communication healthy Zone or CZ circuitry fault block. Zone or CZ circuitry fault alarm No Zone or CZ circuitry fault Zone or CZ PU error fault block. Zone or CZ PU error fault alarm No Zone or CZ PU error fault All protections Disabled

Not used FnKey LED3 Green FnKey LED4 Red

FnKey LED4 Yellow FnKey LED4 Green

All protections Not Disabled

Zone 1: 87BB & 50BF blocked

Zone 1: 50BF blocked

Zone 1: protected

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LED

Number

LED Input Connection/Text Latched P74x LED Function Indication

(GS) 3-

FnKey LED5 Red FnKey LED5 Yellow FnKey LED5 Green FnKey LED6 Red FnKey LED6 Yellow FnKey LED6 Green FnKey LED7 Red FnKey LED7 Yellow FnKey LED7 Green FnKey LED8 Red FnKey LED8 Yellow FnKey LED8 Green FnKey LED9 Red FnKey LED9 Yellow FnKey LED9 Green FnKey LED10 Red FnKey LED10 Yellow

Zone 2: 87BB & 50BF blocked Zone 2: 50BF blocked Zone 2: protected Not used Not used Reset CU Indications Not used Not used Reset CU & PU Indications Not used Not used Reset PU Trip Latch Not used Not used Manual DR trigger Not used Dead Zone fault

FnKey LED10 Green

Peripheral Unit P742:

LED

Number

1 LED 1 Red No Isolator 1 Closed 2 LED 2 Red No Isolator 2 Closed 3 LED 3 Red No Isolator 3 Closed 4 LED 4 Red Yes Trip on CU 50BF backtrip order 5 LED 5 Red Yes Trip on CU 87BB trip order 6 LED 6 Red Yes Dead Zone fault 7 LED 7 Red No Circuit Breaker out of service 8 LED 8 Red No Fiber communication Error

LED Input Connection/Text Latched P74x LED Function Indication

Not used

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Peripheral Unit P743:

LED

Number

LED Input Connection/Text Latched P74x LED Function Indication

LED1 Red LED1 Yellow LED1 Green LED2 Red LED2 Yellow LED2 Green LED3 Red LED3 Yellow LED3 Green LED4 Red LED4 Yellow LED4 Green LED5 Red LED5 Yellow LED5 Green

Yes

Isolator 1 Closed

Isolator 1 Status Alarm

Isolator 1 Open

Isolator 2 Closed

Isolator 2 Status Alarm

Isolator 2 Open

Isolator 3 Closed

Isolator 3 Status Alarm

Isolator 3 Open

Trip on CU 50BF backtrip order

Not used

Trip on CU 87BB trip order

Not used

Dead Zone fault

Yes

No Not used

Not used

Circuit Breaker out of service

Not used

Circuit Breaker healthy

Fiber communication Error

Fiber communication to change

Fiber communication healthy

Not used

Reset PU Indications

Not used

Reset PU Trip Latch

FnKey LED3 Green FnKey LED4 Red

FnKey LED4 Yellow FnKey LED4 Green FnKey LED5 Red FnKey LED5 Yellow FnKey LED5 Green

Not used

Mode 50BF disabled

Mode normal

Mode overhaul

Not used

Mode normal

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LED

Number

LED Input Connection/Text Latched P74x LED Function Indication

FnKey LED6 Red

(GS) 3-

1.2.2 Relay rear panel Examples of the rear panel of the relay are s hown in Figures 3, 4 a nd 5. All curr ent signals ,

digital logic input signals and ou tput contacts are connected at the rear of the relay. Also connected at the rear is the twist ed pair wiring f or the rear EIA(RS)485 c ommunic ation port; the IRIG-B time synchronising input is op tio na l in t he P 741, the E ther n et r e ar c om munication board with copper and fiber optic connections or the second communication and InterMiCOM board are optional in the P741 and P743.

FnKey LED6 Yellow FnKey LED6 Green FnKey LED7 Red FnKey LED7 Yellow FnKey LED7 Green FnKey LED8 Red FnKey LED8 Yellow FnKey LED8 Green FnKey LED9 Red FnKey LED9 Yellow FnKey LED9 Green FnKey LED10 Red FnKey LED10 Yellow FnKey LED10 Green

No Not used

FIGURE 3: P742 RELAY REAR VIEW 40TE

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FIGURE 4: P743 RELAY REAR VIEW 60TE

FIGURE 5: P741 RELAY REAR VIEW 80TE

Refer to the wiring diagram in the ‘Installation Chapter’ (P74x/EN IN) for the complete connection details.

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1.3 Relay connection and power-up

Before powering-up the relay, confirm that the relay power supply voltage and nominal ac signal magnitudes are appropriate for your application. The relay serial number, and the relay’s current and voltage rating, power rating information can be viewed under the top hinged cover. The rel ay is availab le in the following a uxiliary volt age versions and these are specified in the table below:

(GS) 3-

Nominal Ranges 24 - 48V dc 19 to 65V -

48 - 110V dc (30 - 100V ac rms) ** 37 to 150V 24 to 110V 110 - 250V dc (100 - 240V ac rms) ** 87 to 300V 80 to 265V

** rated for ac or dc operation Please note that the label does not s pecif y the logic input r atings. T he P74x relays ar e fitted

with universal opto isolated logic inputs that can be programmed for the nominal battery voltage of the circuit of which they are a part. See ‘Universal Opto input’ in the Firmware section for m ore information on logic input specifications. Please note that the opto inputs have a maximum input voltage rating of 300V dc at any setting.

Once the ratings have bee n verified for the application, connec t external power capable of delivering the power r equirements specif ied on the label to perf orm the relay familiari zation procedures. Figures 3, 4 an d 5 ind ic ate the location of the power s up ply terminals but please refer to the wiring diagrams in the Installation section for complete installation details ensuring that the correct polarities are observed in the case of dc supply.

1.4 Introduction to the user interfaces and settings options

The relay has three user interfaces:

− The front panel user interface via the LCD and keypad

Operative dc

Range

Operative ac

Range

− The front port which supports Courier communication

− The rear port which supports one protocol: Courier. (IEC 60870-5-103 is converted

from Courier using a KITZ274).

− The optional Ethernet port which supports IEC 61850 The measurement information and relay settings that can be accessed from the four

interfaces are summarized in Table 1.

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dat a

settings

Column header

Contr ol&suppor t

Group 1

Group 4

Up to4protectionsettinggroups

System dat a

iew records

DIFF

BUSBARPROT

BUSBAR OPTION

P0106ENb

INP UTS LABELS

OUTPUT LABELS

DIFF

BUSBARPROT

BUSBAR OPTION

INP UTS LABELS

OUTPUT LABELS

-12

Keypad/

LCD

Display & modification of all settings

Digital I/O signal status Display/extraction of

measurements Display/extraction of fault

records Extraction of disturbance

records Programmable scheme

logic settings Reset of fault & alarm

records Clear event & fault

records Time synchronization Control commands

Courier

• •

IEC870-5-

103

IEC

61850

• • • •

• •

• • •

•

• • •

• •

• • •

•

Table 1

1.5 Menu structure

The relay’s menu is arran ged in a tabular structur e. Each setting in the menu is referred to as a cell, and each cell in t he menu may be accessed by reference to a row and column address. The settings are arranged so that each column contains related settings, for example all of the disturbance recorder set tings are contained with in the same column. As shown in Figure 6, the top row of each column contains the heading that describes the settings contained with in that c olumn. Mov em ent bet ween the c olumns of the m enu can onl y be made at the c olum n hea ding level. F or a complete list of all of t he m enu se ttin gs, s ee th e Settings chapter P74x/EN ST.

FIGURE 6: MENU STRUCTURE

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Read access to all settings, alarms, event

All of the settings in the menu fall into one of three categories; protection settings, disturbance recorder settings, or control and support (C&S) settings. One of two different methods is used to change a setting depending on which category the setting falls into. Control and support settings are stored and used by the relay immediately after they are entered. For either protection setti ngs or disturbance r ecorder settings, the relay stores the new setting values in a temporar y ‘scratchp ad’. It activ ates all t he new s ettings together , but only after it has been co nfirmed that the new settings are to be adopted. This techniq ue is employed to provide extr a sec urit y, and so that s ever al sett ing ch anges that ar e m ade within a group of protection settings will all take effect at the same time.

1.5.1 Protection settings The protection settings include the following items:

− Protection element settings

− Scheme logic settings

(GS) 3-

1.5.2 Disturbance recorder settings The disturbance recor der settings inclu de the record durati on and trigger posit ion, selection

of analogue and digital signals to record, and the signal sources that trigger the recording.

1.5.3 Control and support settings The control and support settings include:

− Relay configuration settings

− Open/close circuit breaker

− CT & VT ratio settings

− Reset LEDs

− Active protection setting group

− Password & language settings

− Communications settings

− Measurement settings

− Event & fault record settings

− User interface settings

− Commissioning settings

1.6 Password protection

The menu structure contains three levels of access. The level of access that is enabled determines which of the re lay’s settings can be changed and is contro lled by entry of two different passwords. The levels of access are summarized in Table 2.

Access level Operations enabled Level 0

No password required

records and fault records

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Access level Operations enabled

As level 0 plus: Control commands, e.g.

Level 1 Password 1 or 2 required

Circuit breaker open/close (when available). Reset of fault and alarm conditions.

Reset LEDs. Clearing of event and fault records.

Level 2 Password 2 required

Table 2 Each of the two passwords is 4 characters of upper case text. The factor y default for both

passwords is AAAA. Each passwor d is user-changea ble once it has been correc tly entered. Entry of the password is achie ved ei ther b y a prom pt when a setti ng ch ange is at tem pted, or by moving to the ‘Password’ cell in the ‘System data’ column of the menu. The level of access is independently enabled for each interf ace, th at is to s ay if level 2 ac cess is enab led for the rear communication port, the front panel access will remain at level 0 unless the relevant password is enter ed at the front panel. The access level enabled by th e password entry will tim e-out i ndependently for each interfac e after a period of inactivit y and revert to the default level. If the pas s wor ds are los t a n emergency password can b e s upp li ed - contact GE with the relay’s seria l number. The current leve l of access enabled for an interface can be determined by exam ining the 'Access level' cell in the 'S ystem data' column, the access level for the front pan el User Interface (U I), can also be foun d as one of the def ault display options.

The relay is suppli ed with a default acc ess level of 2, such th at no password is r equired to change any of the relay settings. It is also possible to set the default m enu access level to either level 0 or level 1, preventing write access to the relay settings without the correct password. The default m enu access level is s et in the ‘Password con trol’ cell whic h is found in the ‘System data ’ column of the menu ( note that this setting can on ly be changed when level 2 access is enabled).

As level 1 plus: All other settings

1.7 Relay configuration

The relay is a multi-function device that supp orts numerous diff erent protection, control and communication featur es. To sim plify the setting of the rela y, there is a co nfiguration sett ings column which can be used to enable or disable many of the functions of the relay. The settings associated with any function that is disabled are made invisible, i.e. they are not shown in the menu. To disable a function change the relevant cell in the ‘Configuration’ column from ‘Enabled’ to ‘Disabled’.

The configuration colum n controls which of the four protection settings groups is s elected as active through the ‘Acti ve s ett ings ’ c ell. A pr otection setting group can a lso be disabled in the configuration colum n, pr ovided it is not the pr ese nt activ e gro up. Sim ilarl y, a d isable d sett ing group cannot be set as the active group.

1.8 Front panel user interface (keypad and LCD)

When the keypad is exp os ed it pr o vides f ull acc es s to the menu options of the re l a y, with the information displayed on the LCD.

, ,  and  k eys which are used f or menu navig ation and sett ing value changes

The include an auto-repeat function that comes into operation if any of these keys are held

continually pressed. This can be used to speed up b oth setting value changes and menu navigation; the longer the key is he ld depress ed, the fas ter the rate of change or m ovement becomes.

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(GS) 3-

FIGURE 7: FRONT PANEL USER INTERFACE

1.8.1 Default display and menu time-out The front panel m enu has a default display, the c ontents of which can be se lected from the

following options in the ‘default display’ cell of the ‘Measure’t. setup’ column:

− Date and time

− Relay description (user defined)

− Plant reference (user defined)

− Check zone bias currents (A, B, C)

− Check zone differential currents (A, B, C)

From the default disp lay it is als o pos sible to vie w the other defau lt disp la y option s using the  and  keys. However, if there is no keypad activity for the 15 minute timeout period, the default display will revert to that select ed by the setting an d the LCD b ack light will tur n off . If this happens any setting c hanges that have not been confirmed will be lost and the original setting values maintained.

Whenever there is an uncleared alarm present in the relay (e.g. fault record, protection alarm, control alarm etc.) the default display will be replaced by:

Alarms/Faults

Present

Entry to the menu str uctur e of the r elay is made from the default display and is not affected if the display is showing the ‘Alarms/Faults present’ message.

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1.8.2 Menu navigation and setting browsing The menu can be bro ws ed us ing the four arrow ke ys, foll o wing t he s tr ucture shown in Figure

7. Thus, starting at the d efault display the select the required c olumn heading use th e the column can then be viewed by using the column header either b y holding the [up arrow symbo l] key down or b y a single press of t he clear key return to the defaul t display, press the headings. It is not poss ible to go s tra ight to the d efault disp la y from within o ne of the co lum n

cells using the auto-rep eat facility of the heading. To move to the default display, the

1.8.3 Hotkey menu navigation The hotkey menu can be browsed using the two keys directl y below the LCD. T hese are

known as direct ac cess keys. The direct access k eys perform the func tion that is disp layed directly above them on the LCD. Thus, to access t he hotkey menu from the default display the direct access k ey below the “HOT KEY” text mus t be pressed. Once in the hotke y menu the ⇐ and ⇒ k e ys ca n b e us ed t o s c rol l b et ween the available optio ns an d t he di r ect ac c es s keys can be used to contro l the function curre ntly displa yed. If neither the ⇐ or ⇒ k eys are pressed with 20 sec onds of entering a hotkey sub menu, the relay will revert t o the default

display. The clear k ey hotkey menu. The layout of a typical page of the hotkey menu is described below:

. It is on ly possible to move across columns at the column he ading level. To

 will also act to re turn to the default menu from any page of the

 key will disp lay the first column head ing. To

 and  k eys. The setting data conta ined in

 and  keys. It is pos sible to retur n to the

 key or the clear k ey  from any of the column

 key, as the auto-rep eat will stop at the column

 key must be released and pressed again.

• The top line shows the contents of the previous and next cells for easy menu navigation

• The centre line shows the function

• The bottom line shows the options assigned to the direct access keys

The functions available in the hotkey menu are listed below:

1.8.3.1 Setting group selection The user can either scroll using <<NXT GRP>> through the available setting groups or

<<SELECT>> the setting group that is currently displayed. When the SELECT button is pressed a screen confirming the current setting group is

displayed for 2 seconds before the user is prompted with the <<NXT GRP>> or <<SELECT>> options again. The user can exit the sub menu by using the left and right arrow keys.

For more information on setting group selec tion refer to “Changing s etting group” sec tion in the Operation section (P74x/EN OP).

1.8.3.2 Control inputs – user assignable functions The number of control inputs (user assignable functions – USR ASS) represented in the

hotkey menu is user conf igurabl e in t he “CT RL I/ P CON FIG” c olum n. T he chosen inputs can be SET/RESET using the hotkey menu.

For more inform ation refer to the “Contro l Inputs” s ection in th e Operation section ( P74x/EN OP).

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HOT KEY MENU

EXIT

Description MiCOM P741

HOTKEY

<USER 32

STG GP>

SETTING GROUP 1

SELECT

<MENU

USER 01>

NXT GRP

CONTROL INPUT 1

<STG GP

USER 02>

EXIT

CONTROL INPUT 32

<USER 31

MENU>

EXIT

SETTING GROUP 2

SELECT

<MENU

USER 01>

NXT GRP

SETTING GROUP 2

SELECTED

<MENU

USER 01>

CONTROL INPUT 1

<MENU

USER 02>

CONTROL INPUT 1

EXIT

<MENU

USER 02>

OFF

Confirmation

screen

displayedfor

2 seconds

Confirmation screen displayedfor 2 seconds

Default Display

NO TE: <<EXIT>> K ey returns

the userto the Hotkey

MenuScreen

P3915ENa

1.8.3.3 Hotkey menu navigation

(GS) 3-

1.8.4 Password entry When entry of a password is required the following prompt will appear:

A flashing cursor will indica te which char acter field of the pas sword m ay be chan ged. Press the

character fields of the password, use the pressing the enter key

password is entered. At this point a message will be displayed indicating w hether a correct password has been entere d and if so what l evel of acc ess has been unl ocked. If this level is sufficient to edit the selected se tting then the d isplay will return t o the setting page to allow the edit to continue. If the c orrect level of passwor d has not been e ntere d then th e pass word

prompt page will be returned to. To escape from this prompt press the clear key Alternatively, the password can be entered using the ‘Password’ cell of the ‘System data’

column. For the front panel user interface the password protected access will revert to the default

access level after a keypad inactivity tim e-out of 15 minutes. It is poss ible to m anually reset the password protection to the default level by moving to the ‘Password’ menu cell in the

‘System data’ column and pressing the clear key

FIGURE 8: HOTKEY MENU NAVIGATION

Enter password

**** Level 1

Note: The password required to edit the setting is the prompt as shown

above.

 and  keys to vary each character between A and Z. To move between the

 and  keys. The password is confirmed by

. The display will revert to ‘Enter Password’ if an incorrect

.

 instead of entering a password.

1.8.5 Reading and clearing of alarm messages and fault records

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The presence of one or m ore alarm messages will be indic ated b y the def ault disp la y and by the yellow alarm LED f lashing. The alarm messages can either be self-resetting or latc hed, in which case the y must be cleared manua lly. To view the alar m messages press the r ead key . W hen all alarm s have bee n vie wed, but not c l eared, t he alarm LED wil l change f rom flashing to constant illum ination and the lat est fault recor d will be displayed (if there is one). To scroll through th e pages of this use the  k ey. When all p ages of the fault record have been viewed, the following prompt will appear:

Press clear to

reset alarms

To clear all alarm messages press ; to return to the alarms/faults present display and leave the alarm s uncleared, pres s . Depend ing on the pass word configuratio n settings, it may be necessary to enter a password before the alarm messages can be cleared (see section on password entr y). When the alarms have been c leared the yellow alarm LED will extinguish, as will the red trip LED if it was illuminated following a trip.

Alternatively it is possible to accelerate the procedure, once the alarm viewer has been entered using the  key, the  key can be pressed , and this will move t he disp lay straight to the fault record. Pressing  again will move straight to the alarm reset prom pt where pressing  once more will clear all alarms.

Note: When viewing the fault inform ation for P741 by pressing the r ead key,

1.8.6 Setting changes To change the value of a setting, first navigate the menu to display the relevant cell. To

change the cell value pr ess the enter key , which will bring up a flashing cursor on the LCD to indicate that the value can be changed. This will only happen if the appropriate password has been entered, otherwise the prompt to enter a password will appear. The setting value can then be changed by pressing the  or  keys. If the setting to be changed is a binar y value or a text str ing, the required bit or character to be c hanged must first be selected using the  and  ke ys. When t he desir ed new value h as been r eached it is confirmed as the new setting value by pressing . Alternatively, the new value will be discarded either if the clear button  is pressed or if the menu time-out occurs.

For protection group settings and disturbance recorder settings, the changes must be confirmed before they are used by the relay. To do this, when all required changes have been entered, return to the colum n heading level and press the  key. Prior to returning to the default display the following prompt will be given:

Pressing  will r esult in the new settings be ing ado pt ed, pr ess in g  will cause the rel a y to discard the newly entered values. It should be noted that, the setting values will also be discarded if the menu time out occurs before the setting changes have been confirmed. Control and support settings will b e updated imm ediately after the y are entered, with out the ‘Update settings?’ prompt.

only information for PU’s 7 to 22 is available.

Update settings? Enter or clear

1.9 Front communication port user interface

The front comm unication port is prov ided by a 9-pin female D-type con nector located under the bottom hinged cover. It pr ovides EIA(R S)232 ser ial data com munication a nd is intend ed for use with a PC loc ally to the relay (up to 15m distance) as shown in Figure 9. This port supports the Courier c ommunication protocol only. Couri er is the comm unication language developed by GE to allow com m unication with its ran ge of protectio n rela ys. The fr ont port is particularly designed for use with the relay settings program S1 that is a Windows 98, Windows NT4.0, Windows 2000 or Windows XP based software package.

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FIGURE 9: FRONT PORT CONNECTION

(GS) 3-

The relay is a Data Com munication Equipment (DCE ) device. Thus the pin connec tions of the relay’s 9-pin front port are as follows:

Pin no. 2 Tx Transmit data Pin no. 3 Rx Receive data Pin no. 5 0V Zero volts common None of the other pins are connected in the relay. The relay should be connected to the

serial port of a PC, usually called COM1 or COM2. PCs are normally Data Terminal Equipment (DTE) devices whic h h av e a ser ia l p ort pin connection as below ( if in doub t check your PC manual):

25 Way 9 Way Pin no. 2 3 2 Rx Receive data Pin no. 3 2 3 Tx Transmit data Pin no. 5 7 5 0V Zero volts common For successful data com municat ion, t he T x pin on t he rela y m ust be connec ted t o the Rx p in

on the PC, and the Rx pin on the re la y mus t be c onne c ted to the T x pin on the P C, as s hown in Figure 10. Therefore, providing th at th e PC is a DT E with pin co nnec tions as given above , a ‘straight through’ s erial c onnector is r equired, i.e. on e that con nects p in 2 to p in 2, pin 3 to pin 3, and pin 5 to pin 5. Note that a common cause of difficulty with serial data communication is connecting Tx to Tx and Rx to Rx. This could happen if a ‘cross-over’ serial connector is us ed, i.e. one t hat connect s pin 2 to pin 3, and pi n 3 to pin 2, or if the PC has the same pin configuration as the relay.

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Having made the physical connection from the relay to the PC, the PC’s communication settings must be conf igured to m atch those of the r elay. The re lay’s comm unication setti ngs for the front port are fixed as shown in the table below:

Protocol Courier Baud rate 19,200 bits/s Courier address 1 Message format 11 bit - 1 start bit, 8 data bits, 1 parity bit (even parity), 1 stop bit

The inactivity tim er f or the fr ont port is s et at 15 minutes. This contr ols ho w long t h e relay will maintain its level of pas sword access on th e front port. If no m essages are received on the front port for 15 minutes then any password access level that has been enabled will be revoked.

1.9.1 Front courier port The front EIA(RS)232

communication. It is designed for use during installation and commissioning/maintenance and is not suitable for perm anent connection . Since this interface will not be us ed to link the relay to a substation communication system, some of the features of Courier are not implemented. These are as follows:

FIGURE 10: PC – RELAY SIGNAL CONNECTION

9 pin port supports the Courier protocol for one to one

Automatic Extraction of Event Records:

− Courier Status byte does not support the Event flag

− Send Event/Accept Event commands are not implemented

Automatic Extraction of Disturbance Records:

− Courier Status byte does not support the Disturbance flag Busy Response Layer:

− Courier Status byte does not support t he B us y fl ag, th e o nly response to a r equ e s t will

be the final data

Fixed Address:

− The address of the front courier port is always 1, the Change Device address

command is not supported.

Fixed Baud Rate:

− 19200 bps It should be noted t hat alt hough autom atic extrac tion of even t and disturb ance re cor ds is not

supported it is possible to manually access this data via the front port.

1.10 S1 Agile relay communications basics

This port is actually compliant to EIA(RS)574; the 9-pin version of EIA(RS)232, see www.tiaonline.org.

The EIA(RS)232 front communication port is intended for use with the relay settings program S1 Agile. This program runs on WindowsTM 2000, XP, Vista or Windows 7 and is the universal IED Support Software used for direct access to all stored data in any IED.

S1 provides full access to:

− Px40, Modulex series, K series, L series relays

− Mx20 measurement units

Connecting to the P74x relay using S1 Agile

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This section is intended as a quick start guide to using S1 Agile and assumes you have a copy installed on your PC. See the S1 Agile program online help or ‘MiCOM P40 Agile Modular and Compact Ranges, Settings Application Software User Guide’, P40-M&CR-UG for more information.

1. Make sure the EIA(RS)232 serial cable is properly connected between the port on the front panel of the relay and the PC.

2. Start S1 Agile and click the Quick Connect tab and select Create a New System.

3. Check the Path to System file is correct, then enter the name of the system in the Name field. If you need to add a brief description of the system, use the Comment field.

4. Click OK.

5. Select the device type.

6. Select the communications port.

7. Once connected, select the language for the settings file, the device name, then click Finish. The configuration is updated.

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8. In the Agile Explorer window, select Device > Supervise Device… to control the relay directly.

1.10.1 Off-line use of S1 Agile S1 Agile can also be used as an off-line tool to prepare settings, without access to the relay.

1. If creating a new system, in the Agile Explorer, select create new system. Then right-click the new system and select New substation.

2. Right-click the new substation and select New voltage level.

3. Then right-click the new voltage level and select New bay.

4. Then right-click the new bay and select New device. You can add a device at any level, whether it is a system, substation, voltage or bay.

5. Select a device type from the list, then enter the relay type, such as P645. Click Next.

6. Enter the full model number and click Next.

7. Select the Language and Model, then click Next.

8. Enter a unique device name, then click Finish.

9. Right-click the Settings folder and select New File. A default file 000 is added.

10. Right-click file 000 and select click Open. You can then edit the settings. See the S1 Agile program online help for more information.

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2. CONFIGURING THE ETHERNET INTERFACE

The way in which you configure the Ethernet interface depends on the particular type of interface you have. If you have a DNP3.0 interface, use the DNP setting file to configure the Ethernet interface. Otherwise you should use the IED configurator tool in MiCOM S1 Agile.

Note: Further information is available in the Communications chapter

2.1 Configuring the Ethernet Interface for IEC 61850

1. Open MiCOM S1 Agile:

2. Select Tools > IEC61850 IED Configurator

3. Select Device > Manage IED

4. Select Px40

5. Enter the address of the IED you want to manage (this will always be '1' if you are connected via the front port)

6. Click Next. The following screen appears

7. Select Extract Configuration, Active Bank

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8. Select the model. The IP address data is then revealed:

9. To change the address values, select View > Enter Manual Editing Mode

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10. Enter the required IP configuration and select the green download button:

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IED (IP1)

IED Configurator

XXX.YYY.254.ZZZ

Fixed

SW2

Switch Manager (SHP or DHP) RSTP Configurator (RSTP)

REB (IP2)

P4442ENa

-24

3. CONFIGURING THE REDUNDANT ETHERNET BO ARD

An IP address is a logical address assigned to devices in a computer network that uses the Internet Protocol (IP) for communication between nodes. IP addresses are stored as binary numbers but they are represented using Decimal Dot Notation, whereby four sets of decimal numbers are delimited by dots as follows:

XXX.XXX.XXX.XXX For example: 10.86.254.85 An IP address within a network is usually associated with a subnet mask that defines which

network the device resides. A subnet mask takes the same form of an IP address. For example: 255.255.255.0 A full explanation of IP addressing and subnet masking is beyond the scope of this guide.

Further information is available on application. Both the IED and the REB (Redundant Ethernet Board) each have their own IP address.

FIGURE 11 shows the IED as IP1 and the REB as IP2.

Note: IP1 and IP2 are different but use the same subnet mask.

The switch IP address must be configured through the network.

FIGURE 11: IED AND REB IP ADDRESS CONFIGURATION

3.1 Configuring the IED IP Address

The IP address of the IED is configured using the IED Configurator software in S1 Agile. For IEC 61850, the IED IP address is set using the IED Configurator. There are 254 addresses available, which are configurable in the last octet. These are

within the range 01 to 254 decimal, which is equivalent 01 to FE hexadecimal, or 00000001 to 11111110 binary.

As with all IP networks, the first and last addresses (00 and FF) should not be used as these are reserved for the network address and broadcast address respectively.

Note: In the IED Configurator, ensure that the port type is set to "Copper" (even if

3.2 Configuring the Board IP Address

The IP address of the REB is configured in both software and hardware, as shown in FIGURE 11. Therefore, this must be configured before connecting the IED to the network to avoid an IP address conflict.

Configuring the First Two Octets of the Board IP Address

If using SHP or DHP, the first two octets are configured using Switch Manager or an SNMP MIB browser. An H35 (SHP) or H36 (DHP) network device is needed in the network to configure the Px40 redundant Ethernet board IP address using SNMP.

If using Rapid Spanning Tree Protocol (RSTP), the first two octets are configured using the RSTP Configurator software tool or using an SNMP MIB browser.

redundant fibres are being used)

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P4389ENb

1 2 4

8 16 32 64

Unused

SW2 Top view

Example address

decimal 85

1 + 4 + 16 + 64 = 85

(GS) 3-

Configuring the Third Octet of the Board IP Address

The third octet is fixed at 254 (FE hex, 11111110 binary regardless of the protocol.

Configuring the Last Octet of the Board IP Address

The last octet is configured using the 8-way board address DIP switch SW2 on the REB.

3.3 RSTP Configuration

FIGURE 12: REB ADDRESS SWITCHES (SW2)

Details of how to access the switches on the REB are provided in the Installation chapter.

Caution: This hardware configuration should ideally take place before the unit is

installed. If this is not possible, this must be carried out by authorized installation engi neers.

If you are using RSTP, you will need the RSTP configurator software. This is available from GE on request.

The RSTP Configurator software is used to identify a device, configure the IP address, configure the SNTP IP address and configure RSTP settings.

Installing RSTP Configurator

1. Double click WinPcap_4_0.exe to install WinPcap.

2. Double click ALSTOM Grid-RSTP Configurator.msi to install the RSTP Configurator.

3. The setup wizard appears. Click Next and follow the on-screen instructions to run the installation.

Starting the RSTP Configurator

1. To start the RSTP Configurator, select Programs > RSTP Configurator > RSTP Configurator.

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2. The Login screen appears. For user mode login, enter the Login name as User and click OK with no password.

3. If the login screen does not appear, check all network connections.

4. The main window of the RSTP Configurator appears. The Network Board drop-down list shows the Network Board, IP Address and MAC Address of the PC in which the RSTP Configurator is running.

Device Identification

1. To configure the REB, go to the main window and click Identify Device.

2. The REB connected to the PC is identified and its details are listed as shown below:

• Device address

• MAC address

• Version number of the firmware

• SNTP IP address

• Date & time of the real-time clock, from the board.

Note: Due to the time needed to establish the RSTP protocol, it is necessary to

wait 25 seconds between connecting the PC to the IED and clicking the

Identify Device button.

IP Address Configuration

1. To change the network address component of the IP address, go to the main window and click the IP Config button. The Device setup screen appears. The first three octets of the board IP address can be configured.

Note: The last octet is set using the DIP switches (SW2) next to the ribbon

connector.

2. Enter the required board IP address and click OK. The board network address is updated and displayed in the main window.

SNTP IP Address Configuration

1. To Configure SNTP server IP address, go to the main window and click the SNTP Config button. The Device setup screen appears.

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2. Enter the required SNTP MAC and server IP address, then click OK. The updated SNTP server IP address appears in the main screen.

Equipment

1. To view the MAC addresses learned by the switch, go to the main window and click the Identify Device button. The selected device MAC address then appears highlighted.

2. Click the Equipment button. The list of MAC addresses learned by the switch and the corresponding port number are displayed.

(GS) 3-

RSTP Parameters

1. To view or configure the RSTP Bridge Parameters, go to the main window and click the device address to select the device. The selected device MAC address appears highlighted.

2. Click the RSTP Config button. The RSTP Config screen appears.

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1. To view the available parameters in the board that is connected, click the Get RSTP Parameters button.

2. To set the configurable parameters such as Bridge Max Age, Bridge Hello Time, Bridge Forward Delay, and Bridge Priority, modify the parameter values and click Set RSTP Parameters as below:

S.No Parameter

1 Bridge Max Age 20 6 40 2 Bridge Hello Time 2 1 10 3 Bridge Forward Delay 15 4 30 4 Bridge Priority 32768 0 61440

Default Value

(seconds)

Minimum Value

(seconds)

Maximum Value

(seconds)

Bridge Parameters

1. To read the RSTP bridge parameters from the board, go to the main window and click the device address to select the device. The RSTP Config window appears and the default tab is Bridge Parameters.

2. Click the Get RSTP Parameters button. This displays all the RSTP bridge parameters from the Ethernet board.

1. To modify the RSTP parameters, enter the values and click Set RSTP Parameters.

2. To restore the default values, click Restore Default and click Set RSTP Parameters.

3. The grayed parameters are read-only and cannot be modified.

Port Parameters

This function is useful if you need to view the parameters of each port.

1. From the main window, click the device address to select the device and the RSTP Config window appears.

2. Select the Port Parameters tab, then click Get Parameters to read the port parameters.

3. Alternatively, select the port numbers to read the parameters.

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Port States

This is used to see which ports of the board are enabled or disabled.

1. From the main window, click the device address to select the device. The RSTP Config window appears.

2. Select the Port States tab then click the Get Port States button. This lists the ports of the Ethernet board. A tick shows they are enabled.

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4. CONFIGURING THE DATA PROTOCOLS

Depending on the model, various protocols can be used with the serial rear ports. However, only one protocol can be configured at any one time on any one IED. The range of available communication settings depend on which protocol has been chosen

4.1 Courier Configuration

To use the rear port with Courier, you can configure the settings using the HMI panel. Courier can be used with either a copper connection or a fibre connection.

1. Select the CONFIGURATION column and check that the Comms settings cell is set to Visible.

2. Select the COMMUNICATIONS column.

3. Move to the first cell down (RP1 protocol). This is a non settable cell, which shows the chosen communication protocol – in this case Courier.

COMMUNICATIONS RP1 Protocol

Courier

4. Move down to the next cell (RP1 Address). This cell controls the address of the IED. Up to 32 IEDs can be connected to one spur. It is therefore necessary for each IED to have a unique address so that messages from the master control station are accepted by one IED only. Courier uses an integer number between 0 and 254 for the IED address. It is important that no two IEDs have the same address.

COMMUNICATIONS RP1 Address

255

5. Move down to the next cell (RP1 InactivTimer). This cell controls the inactivity timer. The inactivity timer controls how long the IED waits without receiving any messages on the rear port before it reverts to its default state, including revoking any password access that was enabled. For the rear port this can be set between 1 and 30 minutes.

COMMUNICATIONS RP1 Inactivtimer

10.00 mins.

6. If the optional fibre optic connectors are fitted, the RP1 PhysicalLink cell is visible. This cell controls the physical media used for the communication (Copper or Fibre optic).

7. Move down to the next cell (RP1 Card Status). This cell is not settable. It just displays the status of the chosen physical layer protocol for RP1.

COMMUNICATIONS RP1 Physical Link

Copper

COMMUNICATIONS

RP1 Card Status

K-Bus OK

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8. Move down to the next cell (RP1 Port Config). This cell controls the type of serial connection. Select between K-Bus or RS485.

COMMUNICATIONS

RP1 Port Config

K-Bus

9. If using EIA(RS)485, the next cell selects the communication mode. The choice is

either IEC 60870 FT1.2 for normal operation with 11-bit modems, or 10-bit no parity. If using K-Bus this cell will not appear.

COMMUNICATIONS

RP1 Comms Mode

IEC 60870 FT1.2

10. If using EIA(RS)485, the next cell down controls the baud rate. Three baud rates are

supported; 9600, 19200 and 38400. If using K-Bus this cell will not appear as the baud rate is fixed at 64kbps.

(GS) 3-

COMMUNICATIONS

RP1 Baud Rate

Note: If you modify protection and disturbance recorder settings using an on-line

editor such as PAS&T, you must confirm them. To do this, from the Configuration column select the Save changes cell. Off-line editors such as MiCOM S1 Agile do not need this action for the setting changes to take effect.

4.2 IEC 61850 Configuration

The only IEC 61850 configuration changes you can make with the HMI panel is to turn GOOSE on or off.

4.3 IEC 61850 Configuration

You cannot configure the device for IEC 61850 using the HMI panel on the product. For this you must use the IED Configurator.

IEC 61850 allows IEDs to be directly configured from a configuration file. The IED’s system configuration capabilities are determined from an IED Capability Description file (ICD), supplied with the product. By using ICD files from the products to be installed, you can design, configure and even test (using simulation tools), a substation’s entire protection scheme before the products are even installed into the substation.

19200

To help with this process, MiCOM S1 Agile provides an IED Configurator tool, which allows the pre-configured IEC 61850 configuration file to be imported and transferred to the IED. As well as this, you can manually create configuration files for MiCOM IEDs, based on their original IED capability description (ICD file).

Other features include:

− The extraction of configuration data for viewing and editing.

− A sophisticated error checking sequence to validate the configuration data before

sending to the IED.

Note: To help the user, some configuration data is available in the IED

CONFIGURATOR column, allowing read-only access to basic configuration data.

Note: The IEC 61850 option is only available on the P741 and the P743.

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4.3.1 IEC 61850 Configuration Banks To help version management and minimize down-time during system upgrades and

maintenance, the MiCOM IEDs have incorporated a mechanism consisting of multiple configuration banks. These configuration banks fall into two categories:

− Active Configuration Bank

− Inactive Configurati on Bank

Any new configuration sent to the IED is automatically stored in the inactive configuration bank, therefore not immediately affecting the current configuration.

When the upgrade or maintenance stage is complete, the IED Configurator tool can be used to transmit a command, which authorizes activation of the new configuration contained in the inactive configuration bank. This is done by switching the active and inactive configuration banks. The capability of switching the configuration banks is also available using the IED CONFIGURATOR column of the HMI.

The SCL Name and Revision attributes of both configuration banks are also available in the IED CONFIGURATOR column of the HMI.

4.3.2 IEC 61850 Network Connectivity Configuration of the IP parameters and SNTP time synchronization parameters is performed

by the IED Configurator tool. If these parameters are not available using an SCL file, they must be configured manually.

As the IP addressing will be completely detached and independent from any public network, it is up to the company’s system administrator to establish the IP addressing strategy. Every IP address on the network must be unique. This applies to all devices on the network. Duplicate IP addresses will result in conflict and must be avoided. The IED will check for a conflict on every IP configuration change and at power up. An alarm will be raised if an IP conflict is detected.

The IED can be configured to accept data from other networks using the Gateway setting. If multiple networks are used, the IP addresses must be unique across networks.

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IED

Ethernet switch

TXA

Media

Converter

RJ45

V01806

RXA

TXB RXB

RXA

TXA

RXB TXB

(a) (b)

IED

RXA

TXA

RXB TXB

5. PRP/HSR CONFIGURATOR

The PRP/HSR Configurator tool is intended for MiCOM Px4x IEDs with redundant Ethernet using PRP (Parallel Redundancy Protocol), or HSR (High-ava ilability Seamless Redundancy). This tool is used to identify IEDs, switch between PRP and HSR or configure their parameters, configure the redundancy IP address, or configure the SNTP IP address.

5.1 Connecting the IED to a PC

Connect the IED to the PC on which the Configurator tool is used. This connection is done through an Ethernet switch or through a media converter.

(GS) 3-

FIGURE 13: CONNECTION USING (A) AN ETHERNET SWITCH AND (B) A MEDIA

5.2 Installing the Configurator

To install the configurator:

1. Double click the WinPcap installer.

2. Double click the Configurator installer.

5.3 Starting the Configurator

3. Click Next and follow the on-screen instructions.

To start the configurator:

1. Select the Configurator from the Windows Programs menu.

2. The Login screen appears. For user mode login, enter the Login name as User and click OK with no password.

3. If the login screen does not appear, check all network connections.

4. The main window appears. In the bottom right-hand corner of the main window, click the Language button to select the language.

COVER

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5. The Network Board drop-down list shows the Network Board, IP Address and MAC Address of the

6. PC in which the Configurator is running.

5.4 PRP/HSR device identification

To configure the redundant Ethernet board, go to the main window and click the Identify Device button. A list of devices are shown with the following details:

1. Device address

2. MAC address

3. Version number of the firmware

4. SNTP IP address

5. Date & time of the real-time clock, from the board.

Select the device you wish to configure. The MAC address of the selected device is highlighted.

5.5 Selecting the device mode

You must now select the device mode that you wish to use. This will be either PRP or HSR. To do this, select the appropriate radio button then click the Update button. You will be asked to confirm a device reboot. Click OK to confirm.

5.6 PRP/HSR IP Address Configuration

To change the network address component of the IP address:

1. From the main window click the IP Config button. The Device setup screen appears.

2. Enter the required board IP address and click OK. This is the redundancy network address, not the IEC 61850 IP address.

3. The board network address is updated and displayed in the main window.

5.7 SNTP IP Address Configuration

To Configure the SNTP server IP address:

1. From the main window click the SNTP Config button. The Device setup screen appears.

2. Enter the required MAC SNTP address and server I P SNTP Address. Click OK.

3. The updated MAC and IP SNTP addresses appear in the main screen.

5.8 Check for connected equipment

To check what devices are connected to the de vice be i ng m onitored :

5.9 PRP Configuration

1. From the main window, select the device.

2. Click the Equipment button.

3. At the bottom of the main window, a box shows the ports where devices are connected and their MAC addresses.

To view or configure the PRP Parameters:

1. Ensure that you have set the device mode to PRP.

2. Click the PRP/HSR Config button. The PRP Config screen appears.

3. To view the available parameters, click the Get PRP Parameters button.

4. To change the parameters, click the Set Paramete rs button and modify their values.

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If you need to restore the default values of the parameters, click the Restore Defaults button.

The configurable parameters are as follows:

• Multicast Address: Use this field to configure the multicast destination address. All DANPs in the network must be configured to operate with the same multicast address for the purpose of network supervision.

• Node Forget Time: This is the time after which a node entry is cleared in the nodes table.

• Life Check Interval: This defines how often a node sends a PRP_Supervision frame. All DANPs shall be configured with the same Life Check Interval.

5.10 HSR CONFIGURATION

To view or configure the HSR Parameters:

1. Click the PRP/HSR Con f ig button. The HSR Config screen appears.

2. To view the available parameters in the board that is connected, click the Retrieve HSR Parameters from IED button.

(GS) 3-

3. To change the parameters, click the Set Paramete rs button and modify their values.

If you need to restore the default values of the parameters, click the Restore Defaults button.

The configurable parameters are as follows:

• Node Forget Time: This is the time after which a node entry is cleared in the nodes table.

• Life Check Interval: This defines how often a node sends a PRP_Supervision frame. All DANPs must be configured with the same Life Check Interval.

• Proxy Node Table Forget Time: This is the time after which a node entry is cleared in the ProxyTable

• Proxy Node Table Max Entries: This is the maximum number of entries in the ProxyTable

• Entry Forget Time: This is the time after which an entry is removed from the duplicates

• Node Reboot Interval: This is the minimum time during which a node that reboots remains silent

5.11 Filtering Database

The Filtering Database is used to determine how frames are forwarded or filtered across the on-board Ethernet switch. Filtering information specifies the set of ports to which frames received from a specific port are forwarded. The Ethernet switch examines each received frame to see if the frame's destination address matches a source address listed in the Filtering Database. If there is a match, the device uses the filtering/ forwarding information for that source address to determine how to forward or filter the frame. Otherwise the frame is forwarded to all the ports in the Ethernet switch (broadcast).

General tab

The Filtering Database contains two types of entry; static and dynamic. The Static Entries are the source addresses entered by an administrator. The Dynamic Entries are the source addresses learnt by the switch process. The Dynamic Entries are removed from the Filtering Database after the Ageing Time. The Database holds a maximum of 1024 entries.

1. To access the forwarding database functions, if required, click the Filtering Database button in the main windo w.

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2. To view the Forwarding Database Size, Number of Static Entries and Number of Dynamic Entries, click Read Database Info.

3. To set the Aging Time, enter the number of seconds in the text box and click the Set button.

Filtering Entries tab

The Filtering Database configuration pages are used to view, add or delete entries from the Filtering Database. This feature is available only for the administrator. This Filtering Database is mainly used during the testing to verify the PRP/HSR functionality. To add an entry in the forwarding database, click the Filtering Entries tab. Configure as follows:

1. Select the Port Number and MAC Address

2. Set the Entry type (Dynamic or Static)

3. Set the cast type (Unicast or Multicast)

4. Set theMGMT and Rate Limit

5. Click the Create button. The new entry appears in the forwarding database.

To delete an entry from the forwarding database, select the entry and click the Delete Entry button.

Goose Filtering tab

This page configures the source MACs from which GOOSE messages will be allowed or blocked. The filtering can be configured by either the MAC address range boxes or by selecting or unselecting the individual MAC addr ess es in the MAC tab le. Af ter you hav e defined the addresses to be allowed or blocked you need to update the table and apply the filter:

• Update Table: This updates the MAC table according to the filtering range entered in the MAC address range boxes.

• Apply Filter: This applies the filtering configuration in the MAC table to the HSR/PRP board.

5.12 End of session

To finish the session:

1. In the main window, click the Quit button, a new screen appears.

2. If a database backup is required, click Yes, a new screen appears.

3. Click the ... button to browse the path. Enter the name in the text box.

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SETTINGS

Hardware Suffix: J and K Software Version: 51

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(ST) 4-

CONTENTS

1. SETTINGS 3

1.1 Relay settings configuration 3

1.1.1 “System data” column 3

1.1.2 “Configuration” column (P741 Central Unit) 6

1.1.3 “Configuration” column (P742 / P743 Peripheral Units) 8

1.1.4 “PU Conf & Status” column (P741 Central Unit) 10

1.1.5 Default settings restore 11

1.1.6 “Date and time” column 12

1.2 Protection settings 13

1.2.1 Differential Protection Configuration (“Diff Busbar Prot” menu – P741) 14

1.2.2 Differential Protection Configuration (“Busbar option” column – P741) 16

1.2.3 Busbar Trip (87BB) or Central Breaker Fail BackTrip Confirmation (50BF)

(“BB Trip Confirm” menu – P742/P743) 18

1.2.4 Dead Zone configuration (“Dead Zone Prot” menu – P742/P743) 19

1.2.5 Non-directional Phase overcurrent protection (“Overcurrent” menu –

P742/P743) 19

1.2.6 Non-Directional Earth Fault Overcurrent Protection and External Fault

Detection by High-Set Overcurrent (“Earth Fault” menu – P742/P743) 20

1.2.7 Circuit breaker fail and undercurrent function (“CB Fail” column –

P742/P743) 21

1.2.8 CT Supervision (“Supervision” menu) 22

1.3 Control and support settings 23

1.3.1 Circuit breaker control (“CB Control” column – P742/P743) 23

1.3.2 “CT and VT ratios” column (P742 / P743) 24

1.3.3 “Record control” column 25

1.3.4 Measurements (“Measure’t setup” column) 26

1.3.5 “Communications” column 27

1.3.6 “Commissioning tests” column 29

1.3.7 Opto configuration (“Opto Config” column) 33

1.3.8 Control input setting (“Control input” column) 33

1.3.9 Control input configuration (“Ctrl I/P Config” column) 34

1.3.10 “InterMiCOM Comm and Conf” columns (P741 / P743) 34

1.3.11 “Function keys” menu (P741 / P743) 37

1.3.12 “IED Configurator” column (P741 / P743 only) 38

1.3.13 “Control I/P (input) labels” column (P741 / P743 only) 39

1.4 Disturbance recorder settings 40

1.4.1 Central Unit P741 40

1.4.2 Periphera l Unit P7 42 or P743 42

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The default language used by the device. Selectable as English, French, German,

1, P742, P743

1. SETTINGS

The P74x must be configured to the system and application by means of appropriate settings. The sequence i n which the settings are l isted and described in th is chapter will be the protection setting, control and configuration settings and the disturbance recorder settings (see section P74x/EN GS for the detailed r elay menu maps). The rela y is supplied with a factory-set configuration of default settings.

1.1 Relay settings configuration

The relay is a multi-function device that supp orts numerous diff erent protection, control and communication featur es. In order to simplif y the setting of the rela y, there is a configuration settings column which c an be used to enable or disab le many of the functions of the relay. The settings associated with any function that is dis a bl ed are made invisible; i.e. they are not shown in the menu. To disable a function change the relevant cell in the ‘Configuration’ column from ‘Enabled’ to ‘Disabled’.

The configuration colum n controls which of the four protec tion sett ings groups is selected as active through the ‘Acti ve s ett ings ’ c ell. A pr otec t ion se ttin g gr ou p c an a lso be d is a ble d in t he configuration colum n, pr ovided it is not the pr ese nt activ e group. Sim ilarl y, a d isable d sett ing group cannot be set as the active group.

P74x/EN ST/N

(ST) 4-

The column also allows all of the setting values in one group of protection settings to be copied to another group.

To do this firstly set the ‘Co py fr om ’ cell to the prot ection s etting gro up to b e copi ed, then set the ‘copy to’ ce ll to the pr otec tion group where t he cop y is to b e place d. The copied set tings are initially placed in the t emporary scratchpad, a nd will only be used b y the relay following confirmation.

1.1.1 “System data” column

1.1.1.1 Central Unit P741 This menu provides information for the device and general status of the P741 relay.

Menu Text Default Setting

SYSTEM DATA

Language English

Spanish. Password **** Device default password.

Setting Range

Step Size

Min. Max.

Description MiCOM P741 16 character relay description. Can be edited. Plant Reference MiCOM Associated plant description and can be edited. Model Number P741??????????K Relay model number. This display cannot be altered. Serial Number 6 digits + 1 letter Relay model number. This display cannot be altered. Frequency 50Hz 50Hz 60Hz 10Hz Relay set frequency. Settable between 50 and 60Hz

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Menu Text Default Setting

SYSTEM DATA

Comms. Level 2 Displays the conformance of the relay to the Courier Level 2 comms. Relay Address 255 6 6 1 Fixed front and first rear port relay address. Plant Status 0000000000000000 Displays the circuit break er plant status for up to 8 circ uit breakers. The P741 rel ay does

not support any circuit breaker. Not used Control Status 0000000000000000 Not used. Active Group 1 Displays the active settings group.

Setting Range

Step Size

Min. Max.

Software Ref. 1 Displays the relay software version including protocol and relay model. Software Ref. 2 Software Ref. 2 is displayed for a relay with IEC 61850 protocol only and displays the

software version of the Ethernet card. Opto I/P Status 00000000 Duplicate. Displays the status of opto inputs. Relay O/P Status 00000000 Duplicate. Displays the status of output relays. Alarm Status 1 00000000000000000000000000000000 32 bits field give status of first 32 alarms (refer to P74x/EN MR for alarm list). Alarm Status 2 00000000000000000000000000000000 Next 32 alarm status defined. Alarm Status 3 00000000000000000000000000000000 Next 32 alarm status defined. Assigned specifically for platform alarms. Access Level 2 Displays the current access level. Level 0 - No password required - Read acc ess to all s ettings, al arms, even t records

and fault records Level 1 - Password 1 or 2 required - As level 0 plus: Control commands, e.g. circuit

breaker open/close Reset of fault and alarm conditions, Reset LEDs

Clearing of event and fault records Level 2 - Password 2 required - As level 1 plus: All other settings Password Control 2 Sets the menu access leve l for the relay. This setting c an only be changed when level 2

access is enabled. Password Level 1 **** Allows user to change password level 1.

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The default language used by the device. Selectable as English, French, German,

1, P742, P743

Menu Text Default Setting

SYSTEM DATA

Password Level 2 **** Allows user to change password level 2.

1.1.1.2 Peripheral Units P742 and P743

P74x/EN ST/N

(ST) 4-

Setting Range

Step Size

Min. Max.

Menu Text Default Setting

SYSTEM DATA

Language English

Spanish. Password **** Device default password. Description “MiCOM P742” or “MiCOM P743” 16 character relay description. Can be edited. Plant Reference MiCOM Associated plant description and can be edited. Model Number P74???????????K Relay model number. This display cannot be altered. Serial Number 6 digits + 1 letter Relay model number. This display cannot be altered. Frequency 50Hz 50Hz 60Hz 10Hz

Setting Range

Step Size

Min. Max.

Relay set frequency. Settable between 50 and 60Hz Comms. Level 2 Displays the conformance of the relay to the Courier Level 2 comms. Relay Address 255 7 34 1 Sets the front and first rear port relay address from 7. Plant Status 0000000000000000 Displays the circui t breaker plant stat us for up to 8 cir cuit breakers. T he P742 and P743

relays support only a single circuit breaker configuration. Control Status 0000000000000000 Not used. Active Group 1 Displays the active settings group.

CB Trip/Close No Operation

Supports trip and close commands if enabled in the Circuit Breaker Control menu. Software Ref. 1 Displays the relay software version including protocol and relay model.

Operation/ Trip/Close

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Menu Text Default Setting

SYSTEM DATA

Software Ref. 2 Software Ref. 2 is displayed for a relay with IEC 61850 protocol only and displays the

software version of the Ethernet card. Opto I/P Status 000000000000000000000000 Duplicate. Displays the status of opto inputs. Relay O/P Status 0000000000000000 Duplicate. Displays the status of output relays. Alarm Status 1 00000000000000000000000000000000 32 bits field give status of first 32 alarms (refer to P74x/EN MR for alarm list). Alarm Status 2 00000000000000000000000000000000 Next 32 alarm status defined.

Setting Range

Step Size

Min. Max.

Alarm Status 3 00000000000000000000000000000000 Next 32 alarm status defined. Assigned specifically for platform alarms. Access Level 2 Displays the current access level. Level 0 - No password required - Read acc ess to all sett ings, alarm s, event records

and fault records Level 1 - Password 1 or 2 required - As level 0 plus: Control commands, e.g. circuit

breaker open/close Reset of fault and alarm conditions, Reset LEDs

Clearing of event and fault records Level 2 - Password 2 required - As level 1 plus: All other settings Password Control 2 0 2 1 Sets the menu access level for the rela y. This setting can only be changed when le vel 2

access is enabled. Password Level 1 **** Allows user to change password level 1. Password Level 2 **** Allows user to change password level 2.

1.1.2 “Configuration” column (P741 Central Unit)

Menu Text Default Setting Available Settings

CONFIGURATION

Restore Defaults No Operation

Setting to restore a setting group to factory default settings (see also § 1.1.4).

No Operation All Settings Setting Group 1 Setting Group 2 Setting Group 3 Setting Group 4

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Group 1, Group 2, Group 3,

To enable (activate) or disable (turn off) the Differential Busbar Protection function

1, P742, P743

Menu Text Default Setting Available Settings

P74x/EN ST/N

(ST) 4-

Setting Group Select via Menu Allows setting group changes to be initiated via Opto Input or via Menu. Active Settings Group 1 Selects the active setting group.

Save Changes No Operation No Operation, Save, Abort Saves all relay settings. Copy from Group 1 Group 1, 2, 3 or 4 Allows displayed settings to be copied from a selected setting group.

Copy to No Operation Allows displayed settings to be copied to a selected setting group (ready to paste).

Setting Group 1 Enabled Enabled or Disabled If the setting group is disabled from the configuration, then all associated settings and

signals are hidden, with the exception of this setting (paste). Setting Group 2 (as above) Disabled Enabled or Disabled Setting Group 3 (as above) Disabled Enabled or Disabled

Select via Menu Select via Optos

Group 4

No Operation Group 1, 2, 3 or 4

Setting Group 4 (as above) Disabled Enabled or Disabled Busbar Option Invisible Visible / Invisible Sets the Busbar Option menu visible further on in the relay settings menu. Diff Busbar Prot Enabled Enabled or Disabled

(ANSI 87BB). Input Labels Visible Invisible or Visible Sets the Input Labels menu visible further on in the relay settings menu. Output Labels Visible Invisible or Visible Sets the Output Labels menu visible further on in the relay settings menu. Recorder Control Visible Invisible or Visible Sets the Record Control menu visible further on in the relay settings menu. Disturb. Recorder Visible Invisible or Visible Sets the Disturbance Recorder menu visible further on in the relay settings menu. Measure't. Set-up Visible Invisible or Visible Sets the Measurement Setup menu visible further on in the relay settings menu. Comms. Settings Invisible Invisible or Visible Sets the Communications Settings menu visible further on in the relay settings menu.

These are the settings associated with the 1 Commission Tests Visible Invisible or Visible Sets the Commissioning Tests menu visible further on in the relay settings menu. Setting Values Primary Primary or Secondary This affects all protection settings that are dependent upon CT and VT ratios.

and 2nd rear communications ports.

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fines what CB control direct access is allowed. Enabled implies control via menu,

(when option

Allows setting group changes to be initiated via Opto Input or via Menu.

Selects the active setting group.

Saves all relay settings.

Allows displayed settings to be copied from a selected setting group.

-8

MiCOM P74

Menu Text Default Setting Available Settings

Control Inputs Visible Invisible or Visible Activates the Control Input status and operation menu further on in the relay setting menu. Ctrl I/P Config. Visible Invisible or Visible Sets the Control Input Configuration menu visible further on in the relay setting menu. Ctrl I/P Labels Visible Invisible or Visible Sets the Control Input Labels menu visible further on in the relay setting menu.

Direct Access Enabled De

hotkeys etc. Function Key Visible Invisible or Visible Sets the Function Key menu visible further on in the relay setting menu. InterMiCOM Disabled Enabled or Disabled To enable (activate) or disable (turn off) EIA (RS) 232 InterMiCOM (integrated

teleprotection) (when option available). RP1 Read Only Disabled Enabled or Disabled

If this Read Onl y mode is enabled, then all set ting changes and most com mand/control actions are blocked (not accepted by the relay) for Rear Port 1.

RP2 Read Only Disabled Enabled or Disabled If this Read Onl y mode is enabled, then all set ting changes and most com mand/control

actions are blocked (not accepted by the relay) for Rear Port 2 (when option available). NIC Read Only Disabled Enabled or Disabled If this Read Onl y mode is enabled, then all set ting changes and most com mand/control

actions are blocked (not accepted by the relay) for the Ethernet port available).

Enabled/Disabled/Hotkey only/CB Cntrl. only

LCD Contrast 11 0…31 Sets the LCD contrast.

1.1.3 “Configuration” column (P742 / P743 Peripheral Units)

MENU TEXT Default Setting Available Settings

CONFIGURATION

Restore Defaults No Operation No Operation / All Settings / Setting Group

1 / Setting Group 2 / Setting Group 3 / Setting Group 4

Setting to restore a setting group to factory default settings (see also § 1.1.4).

Setting Group Select via Menu Select via Menu / Select via Optos

Active Settings Group 1 Group 1 / Group 2 / Group 3 / Group 4

Save Changes No Operation No Operation / Save / Abort

Copy From Group 1 Group 1 / Group 2 / Group 3 / Group 4

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Allows displayed settings to be copied to a selected setting group (ready to paste).

To enable (activate) or disable (turn off) the Dead Zone Protection function.

r disable (turn off) the Busbar Trip order confirmation on an

To enable (activate) or disable (turn off) the Phase Overcurrent Protection function. ANSI 50P/51.

1, P742, P743

MENU TEXT Default Setting Available Settings

CONFIGURATION

Copy to No Operation No Operation / Group 1 / Group 2

Group 3 / Group 4

Setting Group 1 Enabled Enabled/Disabled

If the setting group is disabled from the configuration, then all associated settings and

signals are hidden, with the exception of this setting (paste). Setting Group 2 Disabled Enabled/Disabled Setting Group 3 Disabled Enabled/Disabled Setting Group 4 Disabled Enabled/Disabled

Dead Zone Prot Enabled Enabled/Disabled

BB Trip Confirm Disabled Enabled/Disabled

P74x/EN ST/N

(ST) 4-

To enable (activate) o

overcurrent function to allow to trip the breaker.

Overcurrent Prot Disabled Enabled/Disabled

Earth Fault Prot Disabled Enabled/Disabled

To enable (activate) or disable (turn off) the Earth Overcurrent Protection function.

ANSI 50N/51N.

CB Fail & I< Disabled Enabled/Disabled

To enable (activate) or disable (turn off) the Circuit Breaker Fail Protection functions.

ANSI 50BF.

Input Labels Visible Visible/Invisible

Sets the Input Labels menu visible further on in the relay settings menu.

Output Labels Visible Visible/Invisible

Sets the Output Labels menu visible further on in the relay settings menu.

CT & VT Ratios Visible Visible/Invisible

Sets the Current & Voltage Transformer Ratios menu visible further on in the relay settings

menu.

Recorder Control Visible Visible/Invisible

Sets the Record Control menu visible further on in the relay settings menu. Disturb Recorder Visible Visible/Invisible

Sets the Disturbance Recorder menu visible further on in the relay settings menu.

Measure't Setup Visible Visible/Invisible

Sets the Measurement Setup menu visible further on in the relay settings menu.

Comms Settings Invisible Visible/Invisible

Sets the Communications Settings menu visible further on in the relay settings menu.

Commission Tests Visible Visible/Invisible

Sets the Commissioning Tests menu visible further on in the relay settings menu.

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Defines what CB control direct access is allowed. Enabled implies control via menu,

(when option

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MENU TEXT Default Setting Available Settings

CONFIGURATION

Setting Values Secondary Primary/Secondary

This affects all protection settings that are dependent upon CT and VT ratios.

Control Inputs Visible Visible/Invisible

Activates the Control Input status and operation menu further on in the relay setting menu.

Ctrl I/P Config Visible Visible/Invisible

Sets the Control Input Configuration menu visible further on in the relay setting menu.

Ctrl I/P Labels Visible Visible/Invisible

Sets the Control Input Labels menu visible further on in the relay setting menu.

Direct Access Enabled Enabled / Disabled

hotkeys etc. InterMiCOM Disabled Enabled or Disabled P741 / P743 only: To enable (activate) or disable (turn off) EIA (RS) 232 InterMiCOM

(integrated teleprotection) (when option available). Function Key Visible Invisible or Visible

P741 / P743 only: Sets the Function Key menu visible further on in the relay setting menu. RP1 Read Only Disabled Enabled or Disabled If this Read Onl y mode is enabled, then all set ting changes and most com mand/control

actions are blocked (not accepted by the relay) for Rear Port 1. RP2 Read Only Disabled Enabled or Disabled If this Read Only mode is enab led, then all setting changes and mos t command/control

actions are blocked (not accepted by the relay) for Rear Port 2 (when option available). NIC Read Only Disabled Enabled or Disabled If this Read Only mode is enab led, then all setting changes and mos t command/control

actions are blocked (not accepted by the relay) for the Ethernet port available).

LCD Contrast 11 0…31 Sets the LCD contrast.

The aim of the configurat ion column is to allow gener al configuration from a s ingle point in the menu. Items that are disabled or made invisible do not appear in the main relay menu.

1.1.4 “PU Conf & Status” column (P741 Central Unit) In the central unit, an additional configuration column “PU Conf & Status” is present to

configure the hardware to the software topology.

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List of the PUs connecte d and synchron ized with the C U. After reboot the C U waits for the

List of PUs with valid topology data. After rebooting the CU checks the topology After a circuitry fa ult has been detected, th e user can accept an d clear the er ror, using t he

After a PU communication error has been detected, the user can accept and clear the error, using the com mand from this cell. The command will NOT be rejected if t he fault is

87BB) AND 50BF protecti on

1, P742, P743

MENU TEXT Default Setting Av ailab le Set tin gs

PU CONF & STATUS

P74x/EN ST/N

(ST) 4-

PU in service 0000000000000000

00000000000 List of the PUs in service. For example a topology scheme may define 12 PU: 5 PU for current phase and 7 PU for future. This would be set to: 1111100000000000000000000000

PU connected 0000000000000000

00000000000

list of connected PUs to equal the PUs in service before enabling the busbar protection. If there is a discrepancy the CU will not start and the scheme will be locked.

PU topo valid 0000000000000000

00000000000

configuration on all PUs and reports the result in this cell. If there is a discrepancy the central unit will not start and the scheme will be locked.

Reset Circt Flt No Yes or No

command from this cell. The command will be rejected if the fault is still present.

0 or 1

Live values

Circuitry Fault 00000000 Live values

List of the zones blocked by a circuitry fault

Circ Fault Phase Phase A or B or C or N Faulty phase that blocks by a circuitry fault the zone Reset PU Error No Yes or No

still present.

PU Error Locked 00000000 Live values

List of the zones blocked for PU communication error

87BB monitoring 00000000 Live values

List of the zones on which the differential busbar protection (87BB) is blocked

87BB&50BF disable 00000000 Live va lues

List of the zones on which the differential busbar protection ( are blocked

1.1.5 Default settings restore To restore the defau lt valu es to the se ttings in an y protection s ettings gr oup, s et the ‘res tore

defaults’ cell to the relevant group number. Alternatively it is possible to set the ‘restore defaults’ cell to ‘all set tings’ to restore th e default values to al l of the re lay’s settin gs, not just the protection groups’ s ettings. The default settings will initially be placed in the sc ratchpad and will only be used by the relay after they have been confirmed. Note that restoring defaults to all settings includes the rear communication port settings, which may result in communication via the r ear port being disrupted if th e new (default) settings do not m atch those of the master station.

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will be used to directly set the master clock and all displayed (or read) times on all

all interfaces will use local time except SNTP time synchronisation and IEC61850

of the local interfaces which will always be in the local time zone and IEC61850/SNTP

-12

1.1.6 “Date and time” column Display the date and time as well as the battery condition.

MiCOM P74

Menu Text Default Setting

DATE AND TIME

Date/Time Data Displays the relay’s current date and time. IRIG-B Sync Disabled Disabled or Enabled Enable IRIG-B time synchr oni zat io n (P741 on l y and with Irig-B option).

IRIG-B Status Data Displays the status of IRIG-B (P741 only and with Irig-B option).

Battery Status Data Displays whether the battery is hea lthy or not. Battery Alarm Enabled Disabled or Enabled Setting that determines whether an unhealthy relay battery condition is alarmed or not.

SNTP Status Data

Setting Range

Step Size

Min. Max.

Card not fitted/Card failed/ Signal healthy/No

signal

Disabled, Trying Server 1, Trying Server 2,

Server 1 OK, Server 2 OK, No response, No

valid clock

For P741 and P743 with Ethernet option only: Displays information about the SNTP time synchronization status

LocalTime Enable Disabled Disabled/Fixed/Flexible Setting to turn on/off local time adjustments. Disabled - No local tim e zone will be maintained. T ime synchronisation fr om any interface

interfaces will be based on the master clock with no adjustment. Fixed - A local time zone adjustment can be defined using the LocalTime offset setting and

timestamps. Flexible - A local t ime zone adjus tment can b e defined usin g the LocalT ime offset sett ing

and each interfac e can b e assigne d to the UTC zone or loc al tim e zone with the exceptio n which will always be in the UTC zone.

LocalTime Offset 0 -720 720 15 Setting to spec if y an of fs et of -12 to +12 hrs in 15 m inute int ervals for l ocal tim e zone. T his

adjustment is applied to the time based on the master clock which is UTC/GMT DST Enable Disabled Disabled or Enabled Setting to turn on/off Daylight Saving Time (DST) adjustment to local time. DST Offset 60mins 30 60 30min Setting to specify daylight saving off set which will be used for the t ime adjustment to local

time. DST Start Last First, Second, Third, Fourth, Last Setting to specify the week of the month in which daylight saving time adjustment starts

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Setting Range

Menu Text Default Setting

Min. Max.

DATE AND TIME

P74x/EN ST/N

(ST) 4-

Step Size

DST Start Day Sunday Setting to specify the day of the week in which daylight saving time adjustment starts

DST Start Month March

Setting to specify the month in which daylight saving time adjustment starts DST Start Mins 60min 0 1425 15min Setting to specify the time of day in which daylight saving time adjustment starts. This is set

relative to 00:00 hrs on the selected day when time adjustment is to start. DST End Last First, Second, Third, Fourth, Last Setting to specify the week of the month in which daylight saving time adjustment ends.

DST End Day Sunday Setting to specify the day of the week in which daylight saving time adjustment ends

DST End Month October

Setting to specify the month in which daylight saving time adjustment ends

Monday, Tuesday, Wednesday, Thursday,

Friday, Saturday

January, February, March, April, May, June,

July, August, September, October,

November, December

Monday, Tuesday, Wednesday, Thursday,

Friday, Saturday

January, February, March, April, May, June,

July, August, September, October,

November, December

DST End Mins 60 0 1425 15min Setting to specify the tim e of day in which d aylight s av ing tim e adjus tment ends . T his is set

relative to 00:00 hrs on the selected day when time adjustment is to end. RP1 Time Zone Local UTC or Local Setting for the rear port 1 interface to specif y if time synchronisation rece ived will be local

or universal time coordinated RP2 Time Zone Local UTC or Local Setting for the rear port 2 interface to specif y if time synchronisation rece ived will be local

or universal time coordinated. This menu is available with the 2nd rear port. Tunnel Time Zone Local UTC or Local For P741 and P743 with Ethernet option only:

Setting to specify if tim e s ynchronisat ion rec eived will be loca l or uni versal t im e co-ordinate when ‘tunnelling’ courier protocol over Ethernet.

1.2 Protection settings

The protection settings include all the following items that become active once enabled in the configuration column of the relay menu database:

− Protection element settings (P741):

• Differential Phase and Earth fault Protection (“Diff Busbar Prot” menu),

• Differential protection configuration (“Busbar option” menu).

− Protection element settings (P742 and P743):

• Busbar Trip (87 BB) or Ce nt r al Breaker Fail BackT rip C onf ir mation (50BF) (“BB T rip

Confirm” menu),

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• Dead Zone configuration (“Dead Zone Prot” menu),

• Non-directional Phase overcurrrent protection (“Overcurrent” menu),

• Non-Directional Earth F ault Overcur rent Protec tion and External Fault Detec tion by

High-Set Overcurrent (“Earth Fault” menu),

• Circuit breaker fail and undercurrent function (“CB Fail” column),

• Supervision CTS (“Supervision” menu).

− Programmable scheme logic (PSL) that also includes InterMiCOM signals mapping.

There are four groups of protection settings, with each group containing the same setting cells. One group of pr otection settings is selected as the active group, and is used b y the protection elements . The settings for group 1 are shown. The settings are discussed in the same order in which they are displayed in the menu.

1.2.1 Differential Protection Configuration (“Diff Busbar Prot” menu – P741) Differential Elements 87BB The differential element has independent settings for phase and earth (sensitive) faults,

which are used for all zones and the check zone independently.

MiCOM P74

1.2.1.1 Differential phase fault Configuration

Menu Text Default Setting

DIFF BUSBAR PROT

Diff Phase Fault (Diff busbar protection menu first part)

CZ Parameters

Phase slope kCZ 30% 0% 90% 1%

Slope angle setting for the check zone biased differential element.

IDCZ>2 Current

Setting that determines the minimum differential operating current for the check zone

biased differential element Zone Parameters Phase slope k2 60% 20% 90% 1%

Slope angle setting for all discriminating zone biased differential elements

ID>2 Current

Setting that determ ines the m inim um diff erential oper ating cur rent f or all th e discriminating

zone biased differential elements

1200 A 50 A 30.000 A 10 A

1000 A 50 A 30.000 A 10 A

Setting Range

Step Size

Min. Max.

Common

ID>1 Current

Setting for the phase circuitry fault monitoring characteristic for the minimum pickup Phase slope k1 10% 0% 50% 1%

Slope angle setting for the phase circuitry fault monitoring characteristic.

ID>1 Alarm Timer

Setting for the operating time delay of the phase circuitry fault monitoring

100 A 10 A 500 A 10 A

5.0s 0.0s 600.0s 0.1s

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tion function. When

Setting that determines the minimum differential operating current for the check zone

1, P742, P743

1.2.1.2 Sensitive earth fault element The sensitive earth f ault element is included for hi gh impedance earthed systems and has

bias current control to g uarantee stabilit y under external faults or when there are signific ant errors in the measurement CTs. The element is usually disabled for effectively earthed systems with low impedance or solid earthing.

P74x/EN ST/N

(ST) 4-

Menu Text Default Setting

DIFF BUSBAR PROT

Diff Earth Fault (Diff busbar protection menu second part) Diff Earth Fault Disabled Enabled/Disabled To enable (activate) or d isable (turn off) the diff er ential ear th f ault protec

activated, the following functions are accessible. IBiasPh>Cur.

Setting that determines the Earth fault element blocking characteristic

CZ Parameters

Earth Slope kNCZ 10% 0% 90% 1%

Slope angle setting for the check zone biased differential Earth element.

IDNCZ>2 Current

biased differential Earth element

Zone Parameters

Earth Slope kN2 10% 0% 90% 1%

2000 A 50 A 30.000 A 10 A

1200 A 10 A 30.000 A 10 A

Setting Range

Min. Max.

Step Size

Slope angle setting for all discriminating zone biased differential Earth elements

IDN>2 Current

Setting that determ ines the m inim um diff erential oper ating cur rent f or all th e disc rim inating zone biased differential Earth elements

Common

IDN>1 Current

Setting for the Neutral circuitry fault monitoring characteristic for the minimum pickup

Earth slope kN1 10% 0% 50% 1%

Slope angle setting for the Neutral circuitry fault monitoring characteristic.

IDN>1 Alarm Timer

Setting for the Neutral circuitry fault monitoring minimum pickup timer

1000 A 10 A 30.000 A 10 A

100 A 10 A 500 A 10 A

5.0s 0.0s 600.0s 0.1s

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Settings

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1, P742, P743

Options for the Ch eck Zone diff erential element fault y calculation due to wrong position of

The CZ does not block any zone trip and the alarm disappears as soon as the CZ

The CZ blocks an y zone tr ip an d both the bl ock ing and the alar m disappear as s oon as the

ars as soon as the CZ c alcu lati on is ri ght

The CZ blocks any zone trip and both the blocking and the alarm disappear only after

Blocking Latched / Alarm&NoBlock !!! /

Zone x Circuitry Fault: Opt i ons f or all the Zo nes differential element fault y calcu la ti on du e to

ne is blocked and both th e blocking and the alarm disappear as soon as the Z one

The Zone is blocked, the b locking disappears as s oon as the Zone calculation is right but

The Zone is blocked and both the blocking and the alarm disappear only after manual

-16

1.2.2 Differential Protection Configuration (“Busbar option” column – P741) The differential elem ent blockings and alarm s can be configured to f it optimum operability,

they are used for all zones and the check zone independently. This column is visible when the “Busbar Option” setting (“Configuration” column) = “visible”.

MiCOM P74

Menu Text Default Setting

BUSBAR OPTION

CZ Circ Flt Mode Alarm & No Block AlarmSR&No Block / Alarm & No Block

Check Zone Circuitry Fault: CB or isolator or CT failure are as follow:

AlarmSR&No Block (Alarm Self Reset and No blocking): calculation is right.

Alarm & No Block (Alarm and No blocking): The CZ does not block any zone trip and the alarm disappears only after manual reset.

Self-Reset: CZ calculation is right.

Alarm Latched: The CZ blocks an y zone tri p, the b lock ing disapp e but the alarm disappears only after manual reset.

Setting Range

Step Size

Min. Max.

Self-Reset / Alarm Latched / Blocking Latched

Blocking Latched: manual reset.

Zx Circ Flt Mode Block ing Latc he d Self-Reset / Alarm Latched /

AlmSR&NoBlck !!!

wrong position of CB or isolator or CT failure are as follow: Self-Reset:

The Zo calculation is right.

Alarm Latched: the alarm disappears only after manual reset.

Blocking Latched: reset.

AlarmSR&No Blck !!! (Alarm Self Reset and No blocking): The Zone is not blocked and alarm disappears as soon as the zone calculation is right.

Alarm & No Block !!!: The Zone is not blocked and alarm disappears only after manual reset.

The selection of “AlarmSR&No Blck !!!” or “Alarm & No Block !!!” modes is effective only if no blocking zone is selected for Check zone circuitry fault (CZ). When “AlarmSR&No Blck !!!” or “Alarm & No Block !!!” setting is selected, the protection will trip the related zone in case of an external trip.

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Options for all the Zones and Check Zone differential element faulty calculation due to

If the faulty calculat ion occurs on one phase onl y, the Zone and/or Check Zone i s blocked

Check Zone Peripheral Unit error m ode: options for the Check Zone differential element

The CZ does not block any zone trip and the alarm disappears as soon as the CZ

The CZ blocks an y zone tr ip an d both the bl ock ing and the alar m disappear as s oon as the

as the CZ calculat ion is right

The CZ blocks any zone trip and both the blocking and the alarm disappear only after

Options for all the Zones d iffer ential elem ent faulty ca lculation d ue to a loss of a Periphera l

The Zone is blocked and both the blocking and th e alarm disappear as soon as the Zone

The Zone is blocked, the b locking disappears as s oon as the Zone calculation is right but

ar only after manual

1, P742, P743

Setting Range

Menu Text Default Setting

Min. Max.

BUSBAR OPTION

Circuitry tReset 5.0s 0.0s 600.0s 0.1s

Setting for the reset time delay of the circuitry fault reset options

Circ. Block Mode 3phase Blocking 3phase Blocking / Blocking / phase

wrong position of CB or isolator or CT failure are as follow: 3phase Blocking:

for the 3 phases. Blocking / phase:

for this phase only. CZ PU Err.Mode Alarm & No Block AlarmSR&No Block / Alarm & No Block /

Self-Reset / Alarm Latched / Blocking Latched

P74x/EN ST/N

(ST) 4-

Step Size

faulty calculation due to a loss of a Peripheral Unit (PU) information are as follow: AlarmSR&No Block (Alarm Self Reset and No blocking):

calculation is right. Alarm & No Block (Alarm and No blocking):

The CZ does not block any zone trip and the alarm disappears only after manual reset. Self-Reset:

CZ calculation is right. Alarm Latched:

The CZ blocks an y zone tri p, the b lock ing disapp ears as soon but the alarm disappears only after manual reset.

Blocking Latched: manual reset.

Zx PU Err.Mode Blocking Latche d Self-Reset / Alarm Latched / Blocking

Latched

Unit (PU) information are as follow: Self-Reset:

calculation is right. Alarm Latched:

the alarm disappears only after manual reset. Blocking Latched:

The Zone is blocked and both the blocking and the alarm disappe reset.

PU Error Timer 5.0s 0.0s 600.0s 0.1s

Setting for the operating time delay of the PU error options PU Error tReset 5.0s 0.0s 600.0s 0.1s Setting for the reset time delay of the PU information error.

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1, P742, P743

If the Sensitive Differential Earth Fault Protection (87BB/N) is blocked, the associated alarm

Differential Busbar

e a time delay before 87BB (ph ase differential busbar protec tion) trip.

When activated, the settable de lay time (us ing ‘Dela y Trip Tim er’ menu) is us ed to confirm

Trip Timer’ sets the delay time to confirm a phase differential busbar protection

(87BB) trip when ‘Del ay Trip Status’ is enabled. T his delay time must be shor ter than the

r’

Sets a minimum thr eshold to display a differential curr ent (‘Measurement’ column). W hen the differential curr ent is less than this threshold on the 3 phases, the displa yed current is

-18

MiCOM P74

Menu Text Default Setting

BUSBAR OPTION

SEF Block Alarm Enabled Enabled / Disabled Options for Sensitive Differential Earth Fault (SEF) Protection (87BB/N) only are as follow: Enabled:

is raised and is flashing on the front panel of the P741. Disabled:

is not raised and is not present on the front panel of the P741. Confirm Reset PU Enabled Enabled / Disabled Enables or disables the PU error auto- reset. 3ph Block-Alarm Enabled Enabled / Disabled When enabled, an alarm is displayed when one zone is bloc ked by a

Protection function (87BB).

Setting Range

Step Size

Min. Max.

Delay Trip Status Disabled Enabled / Disabled Activate or deactivat

the fault or to clear the fault before zone trip. Delay Trip Timer 0.1s 50ms 5s 10ms ‘Delay

time delay of phase circuitry fault m onitoring (‘DIFF BUSBAR PROT / ID>1 Alarm time menu).

Diff Display Min 0A 0A 500A 10A

forced to 0.

1.2.3 Bus bar T rip (8 7BB) or Cent ral Br eaker Fail B ackT rip Conf irm ation (50 BF) (“ BB T rip Co nfirm ” menu – P742/P743)

The peripheral units c an be enabled to control the trip comm and issue by the central unit (87BB or 50BF) if a local fault threshold, either phase or earth (i.e. I>BB or I exceeded.

This criterion provides additional scheme stability. Should the command proceed, and a trip be issued to the circuit breaker this element can confirm the evolution of a circuit breaker failure condition. If the element is still operated after a set time delay a breaker failure condition must exist.

Setting Range

Menu Text Default Setting

Min. Max.

>BB), is

Step Size

BB Trip Confirm

I>BB Current Set 1.20*In 0.05*In 4.00*In 0.01*In

Setting for the minimum pickup phase fault element trip authorization

IN>BB Current 0.20*In 0.05*In 4.00*In 0.01*In

Setting for the minimum pickup Earth fault element trip authorization

Note: In is the CT nominal current.

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Disabled, DT, IEC S Inverse, IEC V Inverse, IEC E Inverse, UK LT Inverse, IEEE M

erse, IEEE E Invers e, U S

ime) Inverse, EUUU Moderately) inverse, IEEE

Setting for the time multiplier setting to adjust the operating time of the IEC IDMT

1, P742, P743

1.2.4 Dead Zone configuration (“Dead Zone Prot” menu – P742/P743)

P74x/EN ST/N

(ST) 4-

Menu Text Default Setting

Dead Zone Prot

I>DZ Current Set 1.20*In 0.05*In 4.00*In 0.01*In

Setting for the tripping characteristic for the minimum pickup phase dead zone element

I>DZ Time Delay 1.00 s 0.00 s 100.00 s 0.01 s

Setting for the minimum pickup phase dead zone element timer

Dead Earth Fault Disabled Enabled / Disabled

Activates or deacti vates the neutral dead zone protection. W hen activated, the following menus are displayed.

IN>DZ Cur Set 1.20*In 0.05*In 4.00*In 0.01*In

Setting for the tripping characteristic for the minimum pickup neutral dead zone element

IN>DZ Time Delay 1.00 s 0.00 s 100.00 s 0.01 s

Setting for the minimum pickup neutral dead zone element timer

Note: In is the CT nominal current.

1.2.5 Non-directional Phase overcurrent protection (“Overcurrent” menu – P742/P743)

Setting Range

Step Size

Min. Max.

The overcurrent protection included in the P742 or P743 relay provides two stages nondirectional three-phase overcurrent protection with independent time delay characteristics. All overcurrent settings apply to all three ph ases but are independent for each of the four stages. The first stage of overcurrent protection has time-delayed characteristics which are selectable between inverse definite minim um time ( IDMT), or definite time (DT ). T he second stage has definite time characteristics only.

Menu Text Default Setting

Overcurrent

I>1 Function

Setting for the tripping characteristic for the first stage overcurrent element. Setting choice: Disabled, definite time (DT), IEC S(tandar) Inverse, IEC V(ery) Inverse,

IEC E(xtremely) Inverse, UK L(ong) T( V(ery) Inverse, IEEE E(xtremely) Inverse, US Inverse or US S(hort) T(ime) Inverse.

The next menus are displayed according to the function choice (refer to P74x/EN GS section). When Disabled, the next menu is ‘I>2 Function’.

Disabled

Setting Range

Step Size

Min. Max.

Inverse, IEEE V Inv Inverse, US ST Inverse

I>1 Current Set 3.00*I

Pick-up setting for first stage overcurrent element.

I>1 Time Delay

Setting for the time-delay for the definite time setting if selected for first stage element.

I>1 TMS

characteristic.

1.00s 0.00s 100.00s 0.01s

1.000 0.025 1.200 0.025

0.10* In 32.00* In 0.01* In

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phase and earth fault element (87BBP&N blocking), only the 87BB phase element

off time

Disabled, DT, IEC S Inverse, IEC V Inverse, IEC E Inverse, UK LT Inverse, IEEE M Inverse, IEEE V Inverse, IEEE E Inverse, US Inverse, US ST

-20

Menu Text Default Setting

MiCOM P74

Setting Range

Step Size

Min. Max.

I>1 Time Dial

Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves.

I>1 Reset Char

Setting to determine the type of reset/release characteristic of the IEEE/US curves.

I>1tReset

Setting that determines the reset/release time for definite time reset characteristic.

I>2 Function

Setting to enable or disable the second stage overcurrent element. The overcurrent can be used as high set overcurrent, to block the 87BB protection for

(87BB/P blocking) , onl y the 87B B Sensi tive Ear th Fa ult (SEF) element (87BB/ N block ing), or a combination of the different functions

I>2 Current Set 20.00* In 0.10* In 32.00* In 0.01* In

Pick-up setting for second stage overcurrent element.

I>2 Time Delay

7.0 0.5 15.0 0.1

DT DT/Inverse

0.0 0.0 100.0 0.1

Disabled Disabled / 87BBP&N blocking / High Set

I>2 / I>2 & 87BBP&N / 87BB/P blocking / 87BB/N blocking / I>2 & 87BB/P / I>2 & 87BB/N

1.00s 0.00s 100.0s 0.01s

Setting for the operating time-delay for second stage overcurrent element.

Block Drop-Off 0.3s 0.2s 6s 0.1s

Adjusts the differential busbar protection (87BB) blocking function during dropfrom 200ms to 6s.

1.2.6 Non-Directional Earth Fault Overcurr ent Protectio n and Externa l Fault Detect ion by High-Set Overcurrent (“Earth Fault” menu – P742/P743)

The P742 and P743 relays include ex tra or bac k up non-directional earth f ault pr ot ec tion . T he earth fault element has two stages of protection. The earth fault element needs to be coordinated with any other protection elements on the system, in order to provide discriminative fault clearance. T he inverse time characteristics available for the earth fault protection, are the same as those for the Overcurrent element.

Note: Ι

Menu Text Default Setting

Earth Fault

ΙN>1 Function

is the CT nominal current.

Disabled

Inverse

Setting Range

Step Size

Min. Max.

Setting for the tripping characteristic for the first stage earth fault element. Setting choice: Disabled, definite time (DT), IEC S(tandar) Inverse, IEC V(ery) Inverse,

IEC E(xtremely) Inverse, UK L(ong) T(ime) Inverse, EUUU Moderately) inverse, IEEE V(ery) Inverse, IEEE E(xtremely) Inverse, US Inverse or US S(hort) T(ime) Inverse.

The next menus are displayed according to the function choice (refer to P74x/EN GS section). When Disabled, the next menu is ‘I

>2 Function’.

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Setting for the time multiplier setting to adjust the operating time of the IEC IDMT

Disabled / 87BBP&N blocking / High Set I>2 / I>2 & 87BBP&N / 87BB/P blocking / 87BB/N blocking /

able or disable the second stage definite time element. If the function is

d earth fault element (87BBO&N blocking) , only the 87BB phase element

1, P742, P743

Setting Range

Menu Text Default Setting

Min. Max.

P74x/EN ST/N

(ST) 4-

Step Size

ΙN>1 Current Set 0.30*Ι

Pick-up setting for the first stage earth fault element.

ΙN>1 Time Delay

Time-delay setting for the first stage definite time element.

ΙN>1 TMS

characteristic.

ΙN>1 Time Dial

Setting for the time multiplier setting to adjust the operating time of the IEEE/US IDMT curves.

ΙN>1 Reset Char

Setting to determine the type of reset/release characteristic of the IEEE/US curves.

ΙN>1tReset

Setting to determine the reset/release time for definite time reset characteristic.

ΙN>2 Function

Setting to en disabled, then all associated settings with the exception of this setting, are hidden.

1.00s 0.00s 100.00s 0.01s

1.000 0.025 1.200 0.025

7.0 0.5 15.0 0.1

DT DT/Inverse

0.0 0.0 100.0 0.1

Disabled

0.10*Ιn 32.00*Ιn 0.01*Ιn

I>2 & 87BB/P / I>2 & 87BB/N

The overcurrent can be used as high set overcurrent, to block the 87BB protection for phase an (87BB/P blocking), only the 87BB SEF element ( 87B B/ N blocking), or a combinati on of the different functions

ΙN>2 Current Set 20.00* Ιn 0.10*Ιn 32.00* Ιn 0.01* Ιn

Pick-up setting for the second stage earth fault element.

ΙN>2 Time Delay

Setting for the operating time delay for the second stage earth fault element.

Block Drop-Off 0.3s 0.2s 6s 0.1s

Adjust the differential bus bar protectio n (87BB) block ing function durin g drop-off time from 200ms to 6s.

1.2.7 Circuit breaker fail and undercurrent function (“CB Fail” column – P742/P743) This function consists of two-stage circuit breaker fail functions that can be initiated by:

• Internal protection element ini tia tio n.

• External protection element initiation.

For current-based protection, the reset condition is based on undercurrent operation to determine that the CB has opened. For the non-current based pr otection, the reset criteria may be selected by means of a setting for determining a CB Failure condition.

1.00s 0.00s 10.00s 0.01s

It is common practic e to use low set undercurrent elements in protection relays to indicate that circuit breaker poles have interrupted the fault or load current, as required.

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Setting to enable or disable the first stage of the circuit breaker function initiated SUPERVISION

delay of the element upon detection of a

-22

Menu Text Default Setting

CB FAIL

MiCOM P74

Setting Range

Step Size

Min. Max.

Control by

Setting which determines the elements that will reset the circuit breaker fail time protection function.

Both means that 52a and current criteria have to indicate open to reset the CB fail.

I< Current Set

Setting that determ ines the circuit breaker fail tim er reset current for overcurrent based

protection circuit breaker fail initiation. I> Status Disabled Enabled/Disabled I> Current Set 1.2*In IN> Current Set 0.2*In

Internal trip

CB Fail Timer 1 0.05 s 0.00 s 10.00 s 0.01 s

Setting for the circui t breaker fail timer stage 1 for which the initiating conditio n must be

valid. CB Fail Timer 2 0.20 s 0.00 s 10.00 s 0.01 s

Setting to enable or disable the second stage of the circuit breaker function.

External trip

CB Fail Timer 3 0.05 s 0.00 s 10.00 s 0.01 s

I< I< / 52a / both

0.05*In

Initiated by a Central Unit trip order

Initiated by an external trip order or integrated overcurrent

0.05*In 4.00*In 0.01*In

externally. CB Fail Timer 4 0.20 s 0.00 s 10.00 s 0.01 s

Setting to enable or disable the second stage of the circuit breaker function inititated

externally.

1.2.8 CT Supervision (“Supervision” menu) The CT Supervision (CTS) feature operates on detection of derived zero sequence current.

Menu Text Default Setting

Supervision

Error Factor KCE 0.40 0.01 1 0.01

Setting for the supervision characteristic for the slope (error coefficient)

Alarm Delay TCE 5.0 s 0.0 s 10.0 s 0.1 s

Setting that determines the operating timecurrent transformer supervision condition.

I0 sup. blocking 87BBP&87BBN 87BBP&87BBN / None

Setting Range

Step Size

Min. Max.

Sub-heading

When IN is measur ed (application with a dedicated measur ement CT to m easure neutral current), and when discrepancies between m easured and derived values are identified,

supervision c a n bloc k the differential bus b ar protection (87B B — phase and neut ra l)

the I

protection or does not block any protect ion.

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Settings

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IN present in the CT and difference

1, P742, P743

Setting Range

Menu Text Default Setting

Min. Max.

P74x/EN ST/N

(ST) 4-

Step Size

CT Supervision

CTS Timer alarm 5.0 s 0.1 s 10.0 s 0.1 s

Setting that determ ines the alarm time-delay of the element upon detection of a current transformer supervision condition (current >10% between the magnitude of the current measured by two phases > 50%).

IMPORTANT NOTE: Tthe Error Factor K

1.3 Control and support settings

The control and su pport settings are part of the main menu and ar e used to configure the relays global conf iguration. It inclu des submenu sett ings as below an d is discussed i n more detail below:

− Circuit breaker control,

− CT & VT ratio settings,

− Record control settings,

− Measurement settings,

− Communications settings,

− Commissioning settings,

Sub-heading

setting must not be changed.

− Opto inputs and control inputs settings,

− When present, InterMiCOM communication and configuration settings,

− User interface (function keys, control input labels) settings.

1.3.1 Circuit breaker control (“CB Control” column – P742/P743) The relay includes the following options for control of a single circuit breaker:

• Local tripping and closing, via the relay menu (or hotkeys),

• Local tripping and closing, via opto-iso lat ed inp uts or hotkeys (or function keys),

• Remote tripping and closing, using the relay communications.

Setting Range

Menu Text Default Setting

Min. Max.

CB CONTROL

Prot Trip Pulse 0.20s 0.05s 2.00s 0.01s

Defines the duration of the trip pulse. Trip Latched Disabled Enabled, Disabled Reset Trip Latch No Yes, No

Step Size

Latch of the trip pulse.

Disabled, Local, Remote, Local + Remote,

CB control by Disabled

This Setting selects the type of circuit breaker control that be used in the logic

Opto, Opto + local, Opto + Remote, Opto + Remote + local

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Sets the Current Transformer knee point voltage when the British standard has been

-24

MiCOM P74

Setting Range

Menu Text Default Setting

Step Size

Min. Max.

Man Close Pulse 0.50s 0.10s 10.00s 0.01s Defines the duration of the close pulse. Man Trip Pulse 0.50s 0.10s 5.00s 0.01s Defines the duration of the trip pulse. Man Close Delay 10.00s 0.01s 600.00s 0.01s This defines the delay time before the close pulse is executed. 87BB Trip Delay 0s 0s 0.400s 5ms Sets the differential busbar protection (87BB) tripping delay time (to allow a sequential

tripping of all f eeders connected to the fault y zone). The trip r elays outputs will b e closed even if the CU trip signal is released before the end of the timer.

CB Superv Timer 150ms 10ms 400ms 5ms Setting for the operating time delay of the phase Circuit Breaker Supervision: The CB

alarm status will be dis played If both 52A and 52B are detecte d more than “CB Superv. Timer”.

1.3.2 “CT and VT ratios” column (P742 / P743) This column is visible when the “CT & VT ratios” setting (“Configuration” column) = “visible”.

Menu Text Default Setting

CT AND VT RATIOS

Phase CT Primary 1.000A 1A 30kA 1

Sets the phase Current Transformer input primary current rating.

Phase CT Sec’y 1.000A 1 5 4

Sets the phase Current Transformer input secondary current rating.

RBPh / RBN 1 0.5 10 0.1

Sets the ratio between the phase lead burden and the neutral lead burden.

Power Parameters

Standard input British Standard British Standard / IEC

chosen.

BRITISH STANDAR D

250/In V 100/In V 5000/In V 10/In V

Knee voltage Vk

Setting Range

Step Size

Min. Max.

chosen.

IEC

25 VA 5 VA 100 VA 1 VA

Rated Burden VA

Sets the Current Transformer power when the IEC standard has been chosen.

IEC

25 / I

Ω

5 / I

Ω 100 / I

Rated Burden Ohm (calculated value)

Calculated value from the Rated Burden set in VA

Ω 1 / I

Ω

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Settings

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as been

Selecting “Yes” will cause the existing event log to be cleared and an event will be

P74x/EN ST/N

1, P742, P743

(ST) 4-

Setting Range

Menu Text Default Setting

Step Size

Min. Max.

CT AND VT RATIOS

IEC Rated short-circuit factor K

scc

Sets the Current Transformer accuracy limit factor when the IEC standard h chosen.

Secondary R

Sets the Current Transformer secondary resistance.

Eff Burden Ohm

Sets the lead burden when the British standard has been chosen.

Eff Burden VA (calculated value)

Calculated value from the Rated Burden set in Ohm

1.3.3 “Record control” column It is possible to disable the reporting of events from all interfaces that supports setting

changes. The settings th at control the various types of events are in the “Record Contro l” column. The effect of setting each to disabled is as follows:

This column is visible when the “Record Control” setting (“Configuration” column) = “visible”.

Menu Text Default Setting

10 10 50 5

0.5 Ω 0.1 Ω 50.0 Ω 0.1 Ω

25 / I

Ω 1 / I

Ω 200 / I

Ω 1 / I

Ω

25.00 VA 0.10 VA 200.00 VA 0.01 VA

Setting Range

Step Size

Min. Max.

RECORD CONTROL

Menu Text Default Setting Available Settings

Clear Event No No or Yes

generated indicating that the events have been erased. Clear Faults No No or Yes Selecting “Yes” will cause the existing fault records to be erased from the relay. Clear Maint. No No or Yes Selecting “Yes” will cause the existing maintenance records to be erased from the relay. Alarm Event Enabled Enabled or Disabled Disabling this setting means that all the occurrenc es th at produc e an a larm will result in no

event being generated. Relay O/P Event Enabled Enabled or Disabled Disabling this settin g means that no event will b e generated f or any change in logic input

state. Opto Input Event Enabled Enabled or Disabled Disabling this settin g means that no event will b e generated f or any change in logic input

state. General Event Enabled Enabled or Disabled Disabling this setting means that no General Events will be generated Fault Rec. Event Enabled Enabled or Disabled

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Settings

(ST) 4

1, P742, P743

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MiCOM P74

Menu Text Default Setting

RECORD CONTROL

Menu Text Default Setting Available Settings

Disabling this setting m eans that no event will be gen erated for any fault that produc es a fault record

Maint. Rec. Event Enabled Enabled or Disabled Disabling this setting means that no event will be generated for any occurrence that

produces a maintenance record. Protection Event Enabled Enabled or Disabled Disabling this setting m eans that any operation of protection elem ents will not be logged

as an event. Clear Dist Recs No No or Yes Selecting “Yes” will ca use the exis ting distur bance rec ords to be clear ed and an eve nt will

be generated indicating that the disturbance records have been erased.

Setting Range

Step Size

Min. Max.

DDB 31 - 0 11111111111111111111111111111111 Displays the status of DDB signals 0 – 31. DDB 2047 - 2016 11111111111111111111111111111111 Displays the status of DDB signals2016– 2047.

1.3.4 Measurements (“Measure’t setup” column) This column is visible when the “Measure’t Setup” setting (“Configuration” column) =

“visible”.

Menu Text Default Setting

MEASUREMENT SETUP

Default Display Description This setting can be used to select the default display from a range of options, note that it is

also possible to view the other default displays whilst at the default level using the  and  keys. However once the 15 minute timeout elapses the default display will revert to that selected by this setting.

Local Values Primary Primary/Secondary

Setting Range

Step Size

Min. Max.

Description / Plant Reference / Idiff CZ / Ibias CZ / Date and Time

This setting controls whether measured values via the front panel user interface and the front courier port are displayed as primary or secondary quantities.

Remote Values Primary Primary/Secondary This setting controls whether measured values via the rear communication port are

displayed as primary or secondary quantities. Remote2 Values Primary Primary/Secondary As above for the 2nd rear port (when available)

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IEC 61850

1, P742, P743

1.3.5 “Communications” column The communications settings apply to the rear communications port. Further details are

given in the SCADA communications section (P74x/EN SC). These settings are availabl e in the m enu ‘Comm unications’ co lumn and are displayed when

the “Comms Settings” setting (“Configuration” column) = “visible”.

1.3.5.1 Courier protocol

P74x/EN ST/N

(ST) 4-

Menu Text Default Setting

COMMUNICATIONS

RP1 Protocol Courier Indicates the communications protocol that will be used on the rear communications port. RP1 Address (P741) 6 6 6 0 RP1 Address

(P742/3) This cell sets the unique address for the relay such that only one relay is accessed by

master station software. RP1 InactivTimer 15 mins. 1 mins. 30 mins. 1 min. This cell controls how long the relay will wait without receiving any messages on the rear

port before it reverts to its default state, including resetting any password access that was enabled.

RP1 Card Status Data K Bus OK, EIA485 OK This cell indicates the status of the rear communication board. RP1 Port Config. KBus KBus or EIA(RS)485 This cell defines whether an electrical KBus or EIA(RS)485 is being used for communication

between the master station and relay.

255 7 34 1

Setting Range

Step Size

Min. Max.

RP1 Comms. Mode If RP1 Port Config. = EIA(RS)485:

The choice is either IEC60870 FT1.2 for normal operation with 11-bit modems, or 10-bit no parity.

RP1 Baud Rate 19200 bits/s 9600 bits/s, 19200 bits/s or 38400 bits/s If RP1 Port Config. = EIA(RS)485:

This cell controls the communication speed between relay and master station. It is important that both relay and master station are set at the same speed setting.

1.3.5.2 Ethernet port

Menu Text Default Setting

COMMUNICATIONS

NIC Protocol

The NIC (Network Interface Cards) protocol ce ll Indicates that IEC 61850 will be used on the rear Ethernet port.

IEC60870 FT1.2 Frame

IEC60870 FT1.2 Frame or 10-Bit No Parity

Setting Range

Step Size

Min. Max.

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1 min

30 mins

1 min

Alarm, Event, None

Unsupported, Card Absent, IEC60870 on RS232 OK, IEC60870 on RS485 OK or

-28

Menu Text Default Setting

COMMUNICATIONS

MiCOM P74

Setting Range

Step Size

Min. Max.

NIC MAC Address

Indicates the MAC (Med ia Access Control) addr ess of the rear Ethernet por t. This address is formatted as a six-byte hexadecimal number, and is unique.

NIC Tunl Timeout 5 mins

Duration of time waited before an inactive tunnel to S1 is reset.

NIC Link Report Alarm Configures how a failed/unfitted network link (copper or fiber) is reported: Alarm - an alarm is raised for a failed link Event - an event is logged for a failed link None - nothing reported for a failed link

NIC Link Timeout 60s 0.1s 60s 0.1s

Duration of time waited, after failed network link is detected, before communicati on by the alternative media interface is attempted.

1.3.5.3 Rear port 2 connection settings The settings shown are th ose configurable for the second rear port which is only available

with the courier protocol.

Ethernet MAC Address

Menu Text Default Setting

COMMUNICATIONS

RP2 Protocol Courier Indicates the communications protocol that will be used on the rear communications port.

RP2 Card Status. data

This cell indicates the status of the rear communication board. RP2 Port Config. RS232 EIA(RS)232, EIA(RS)485 or KBus This cell defines whether an electrica l EIA(RS)232, EIA(R S)485 or KBus is be ing used for

communication. RP2 Comms. Mode The choice is either IEC 60870 FT1.2 f or normal oper ation with 11-bit modems, or 10-b it no

parity. RP2 Address 255 0 255 1 This cell sets the unique address for the relay such that only one relay is accessed by

master station software.

IEC60870 FT1.2 Frame

Setting Range

Step Size

Min. Max.

KBus OK

IEC60870 FT1.2 Frame or 10-Bit No Parity

RP2 Inactivity Timer 15 mins. 1 mins. 30 mins. 1 min. This cell controls ho w long the relay will wait without receiving any messages on the re ar

port before it rever ts to its default state, including resetting any password access that was enabled.

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MiCOM P74

This cell controls the communication speed between relay and master station. It is

This menu cell displays the status of the digital data bus (DDB) signals that result in

1, P742, P743

Menu Text Default Setting

COMMUNICATIONS

RP2 Baud Rate 19200 bits/s 9600 bits/s, 19200 bits/s or 38400 bits/s

important that both relay and master station are set at the same speed setting.

1.3.6 “Commissioning tests” column To help minimise the time required to test relays the relay provides several test facilities

under the ‘COMMISSION TESTS’ menu heading. There are menu cells which allow the status of the opto-isolated inputs, output relay

contacts, internal digital data bus (DDB) signals and user-programmable LEDs to be monitored. Additionally there are cells to test the operation of the output contacts, user-programmable LEDs.

This column is visible when the “Commission tests” setting (“Configuration” column) = “visible”.

P74x/EN ST/N

(ST) 4-

Setting Range

Step Size

Min. Max.

1.3.6.1 P741

COMMISSION TESTS

Opto I/P Status 00000000 This menu cell displ ays the status of th e rela y’s opto-i solated inp uts as a binar y string, a ‘ 1’

indicating an energized opto-isolated input and a ‘0’ a de-energized one Relay O/P Status 00000000

energisation of the output rela ys as a bin ary str ing, a ‘1’ indicat ing an oper ated st ate and ‘ 0’ a non-operated state.

When the ‘Test Mode’ cell is set to ‘Enabl ed’, the ‘ Relay O/P S tatus’ cel l does not s how the current status of the outpu t relays and hence can not be used to conf irm operation of the output relays. Therefore it will be necessary to monitor the state of each contact in turn.

Test Port Status 00000000 This menu cell displ a ys t he s tatus of the e ight d igi tal d ata b us (DD B) signals that have b een

allocated in the ‘Monitor Bit’ cells. LED Status 00000000 This menu cell displ ays the status of th e LEDs. t hat h ave been allocated in the ‘ Monitor Bit’

cells, a ‘1’ indicating a particular LED is lit and a ‘0’ not lit.

Menu Text Default Setting Available Settings

Monitor Bit 1 Rela y Label 01

The eight ‘Monitor Bit’ cells allow the user to select the status of which digital data bus signals can be observed in the ‘Test Port Status’ cell or via the monitor/download port.

Monitor Bit 8 Rela y Label 08 0 to 2047 The eight ‘Monitor Bit’ cells allow the user to select the status of which digital data bus

signals can be observed in the ‘Test Port Status’ cell or via the monitor/download port.

0 to 2047 See PSL section for details of digital data bus signals

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Menu Text Default Setting Available Settings

COMMISSION TESTS

Test Mode Disabled Disabled /Out Of Service The Test Mode menu cell i s used to allow sec ondary injec tion testing to be per formed on a

Peripheral Unit rela y without operation of the connected zone. It also enables a facility to directly test the output contacts by applying menu controlled test signals. To select test mode the Test Mode m enu cell shou ld be set to ‘Ou t of Service’, which takes the rel ay out of service. It also causes a n alarm condition to be recor ded and the yellow ‘Out of Service’ LED to illuminate and a n alarm message ‘Out of Servic e’ is given. The differential busbar protection (87BB) and 50B F protect ion are in service as long as the ce lls ‘87B B Monitori ng’ and ‘87BB & 50BF disabl’ a r e equ al t o 0. O nc e testing is complete the c el l must be set back to ‘Disabled’ to restore the relay back to service.

Test Pattern 00000000 Visible when “Test Mode“ is disabled

This cell is used to se lect the output rela y (or high break relay) con tacts that will be tes ted when the ‘Contact Test’ cell is set to ‘Apply Test’.

Contact Test No Operation Visible when “Test Mode“ is disabled

When the ‘Apply Test’ com mand in this cell is issued the c ontacts set for operation (s et to ‘1’) in the ‘Test Patt ern’ ce ll chang e state . After the tes t has been applied t he com m and tex t on the LCD will chang e to ‘ No Operat ion’ a nd the c ont acts w ill rem ain in the T est Stat e unt il reset issuing the ‘ Remove T est’ command. T he command t ext on the LCD will ag ain revert to ‘No Operation’ after the ‘Remove Test’ command has been issued.

Note: W hen the ‘Test Mode’ cell is set to ‘Enabled’ the ‘Rela y O/P Status’ cell does

not show the current status of the output relays and hence c an not be used to confirm operation of t he out put rel a ys. T her ef or e it will be nec es sary to monitor the state of each contact in turn.

Test LEDs No Operation When the ‘Apply Test’ command in this cell is issued the eighteen user-programmable

LEDs will illuminate for approximately 2 seconds before they extinguish and the command text on the LCD reverts to ‘No Operation’.

0 = Not Operated 1 = Operated

No Operation, Apply Test, Remove Test

No Operation Apply Test

87BB Monitoring All bits set to 0

Each bit represents 1 zone

This cell is used to select the zone on which the differential busbar protection (87BB) will be disabled.

87BB & 50BF disabl All bits set to 0

Each bit represents 1 zone

Visible when “Test Mode“ is disabled This cell is used to select the zone on which the differential busbar (87BB) AND 50BF protections will be disabled.

BB Trip Pattern 00000000 0 = In Service

Visible when “Test Mode“ is disabled This cell is used to select the zone that will be tested when the ‘BB Trip Command’ cell is set to ‘Apply Test’.

0 = In Service 1 = 87BB blocked

0 = In Service 1 = 87BB and 50BF blocked

1 = Out of Service

GE P741, P742, P743 Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

1. DOCUMENTATION STRUCTURE

2. INTRODUCTION TO MiCOM

3. PRODUCT SCOPE

3.1 Functional overview

3.2 Ordering options Information Required with Order

Technical Data

Getting Started

1. GETTING STARTED

1.1 User interfaces and menu structure

1.2 Introduction to the relay

1.2.1 Front panel

1.2.1.1 LED indications Fixed Function The 4 fixed function L EDs on the left-hand side of the front panel are used to indicate the

1.2.2 Relay rear panel Examples of the rear panel of the relay are s hown in Figures 3, 4 a nd 5. All curr ent signals ,

1.3 Relay connection and power-up

1.4 Introduction to the user interfaces and settings options

1.5 Menu structure

1.5.1 Protection settings The protection settings include the following items:

1.5.2 Disturbance recorder settings The disturbance recor der settings inclu de the record durati on and trigger posit ion, selection

1.5.3 Control and support settings The control and support settings include:

1.6 Password protection

1.7 Relay configuration

1.8 Front panel user interface (keypad and LCD)

1.8.1 Default display and menu time-out The front panel m enu has a default display, the c ontents of which can be se lected from the

1.8.2 Menu navigation and setting browsing The menu can be bro ws ed us ing the four arrow ke ys, foll o wing t he s tr ucture shown in Figure

1.8.3 Hotkey menu navigation The hotkey menu can be browsed using the two keys directl y below the LCD. T hese are

1.8.3.1 Setting group selection The user can either scroll using <<NXT GRP>> through the available setting groups or

1.8.3.2 Control inputs – user assignable functions The number of control inputs (user assignable functions – USR ASS) represented in the

1.8.3.3 Hotkey menu navigation

1.8.4 Password entry When entry of a password is required the following prompt will appear:

1.8.5 Reading and clearing of alarm messages and fault records

1.8.6 Setting changes To change the value of a setting, first navigate the menu to display the relevant cell. To

1.9 Front communication port user interface

1.9.1 Front courier port The front EIA(RS)232

1.10 S1 Agile relay communications basics

Connecting to the P74x relay using S1 Agile

1.10.1 Off-line use of S1 Agile S1 Agile can also be used as an off-line tool to prepare settings, without access to the relay.

2. CONFIGURING THE ETHERNET INTERFACE

2.1 Configuring the Ethernet Interface for IEC 61850

3. CONFIGURING THE REDUNDANT ETHERNET BO ARD

3.1 Configuring the IED IP Address

3.2 Configuring the Board IP Address

3.3 RSTP Configuration

4. CONFIGURING THE DATA PROTOCOLS

4.1 Courier Configuration

4.2 IEC 61850 Configuration

4.3 IEC 61850 Configuration

4.3.1 IEC 61850 Configuration Banks To help version management and minimize down-time during system upgrades and

4.3.2 IEC 61850 Network Connectivity Configuration of the IP parameters and SNTP time synchronization parameters is performed

5. PRP/HSR CONFIGURATOR

5.1 Connecting the IED to a PC

5.2 Installing the Configurator

5.3 Starting the Configurator

5.4 PRP/HSR device identification

5.5 Selecting the device mode

5.6 PRP/HSR IP Address Configuration

5.7 SNTP IP Address Configuration

5.8 Check for connected equipment

5.9 PRP Configuration

5.10 HSR CONFIGURATION

5.11 Filtering Database

5.12 End of session

Settings

1. SETTINGS

1.1 Relay settings configuration

1.1.1 “System data” column

1.1.1.1 Central Unit P741 This menu provides information for the device and general status of the P741 relay.

1.1.1.2 Peripheral Units P742 and P743

1.1.2 “Configuration” column (P741 Central Unit)

1.1.3 “Configuration” column (P742 / P743 Peripheral Units)

1.1.4 “PU Conf & Status” column (P741 Central Unit) In the central unit, an additional configuration column “PU Conf & Status” is present to

1.1.5 Default settings restore To restore the defau lt valu es to the se ttings in an y protection s ettings gr oup, s et the ‘res tore

1.1.6 “Date and time” column Display the date and time as well as the battery condition.

1.2 Protection settings

1.2.1 Differential Protection Configuration (“Diff Busbar Prot” menu – P741) Differential Elements 87BB The differential element has independent settings for phase and earth (sensitive) faults,

1.2.1.1 Differential phase fault Configuration