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Relion® 615 series

Feeder Protection and ControlREF615Application Manual

Document ID: 1MRS756378Issued: 03.07.2009

Revision: EProduct version: 2.0

© Copyright 2009 ABB. All rights reserved

CopyrightThis document and parts thereof must not be reproduced or copied without writtenpermission from ABB, and the contents thereof must not be imparted to a thirdparty, nor used for any unauthorized purpose.

The software or hardware described in this document is furnished under a licenseand may be used, copied, or disclosed only in accordance with the terms of suchlicense.

TrademarksABB and Relion are registered trademarks of ABB Group. All other brand orproduct names mentioned in this document may be trademarks or registeredtrademarks of their respective holders.

GuaranteePlease inquire about the terms of guarantee from your nearest ABB representative.

ABB Oy

Distribution Automation

P.O. Box 699

FI-65101 Vaasa, Finland

Telephone: +358 10 2211

Facsimile: +358 10 22 41094

http://www.abb.com/substationautomation

HTTP://WWW.ABB.COM/SUBSTATIONAUTOMATION

DisclaimerThe data, examples and diagrams in this manual are included solely for the conceptor product description and are not to be deemed as a statement of guaranteedproperties. All persons responsible for applying the equipment addressed in thismanual must satisfy themselves that each intended application is suitable andacceptable, including that any applicable safety or other operational requirementsare complied with. In particular, any risks in applications where a system failure and/or product failure would create a risk for harm to property or persons (including butnot limited to personal injuries or death) shall be the sole responsibility of theperson or entity applying the equipment, and those so responsible are herebyrequested to ensure that all measures are taken to exclude or mitigate such risks.

This document has been carefully checked by ABB but deviations cannot becompletely ruled out. In case any errors are detected, the reader is kindly requestedto notify the manufacturer. Other than under explicit contractual commitments, inno event shall ABB be responsible or liable for any loss or damage resulting fromthe use of this manual or the application of the equipment.

ConformityThis product complies with the directive of the Council of the EuropeanCommunities on the approximation of the laws of the Member States relating toelectromagnetic compatibility (EMC Directive 2004/108/EC) and concerningelectrical equipment for use within specified voltage limits (Low-voltage directive2006/95/EC). This conformity is the result of tests conducted by ABB inaccordance with the product standards EN 50263 and EN 60255-26 for the EMCdirective, and with the product standards EN 60255-6 and EN 60255-27 for the lowvoltage directive. The IED is designed in accordance with the internationalstandards of the IEC 60255 series.

Table of contents

Section 1 Introduction.......................................................................5This manual........................................................................................5Intended audience..............................................................................5Product documentation.......................................................................6

Product documentation set............................................................6Document revision history.............................................................7Related documentation..................................................................8

Document symbols and conventions..................................................8Safety indication symbols..............................................................8Document conventions..................................................................9Functions, codes and symbols......................................................9

Section 2 REF615 overview...........................................................13Overview...........................................................................................13

Product version history................................................................13PCM600 and IED connectivity package version..........................14

Operation functionality......................................................................14Optional functions........................................................................14

Physical hardware............................................................................14Local HMI.........................................................................................16

LCD.............................................................................................17LEDs............................................................................................18Keypad........................................................................................18

Web HMI...........................................................................................18Authorization.....................................................................................19Communication.................................................................................20

Section 3 REF615 variants.............................................................23REF615 variant list...........................................................................23Presentation of standard configurations...........................................23

Standard configurations...............................................................24Terminal diagrams.......................................................................27Connection diagrams...................................................................30

Standard configuration A including directional earth-faultprotection..........................................................................................33

Applications.................................................................................33Functions.....................................................................................34

Default I/O connections..........................................................35Functional diagrams....................................................................35

Functional diagrams for protection.........................................36

Table of contents

REF615 1Application Manual

Functional diagrams for disturbance recorder and tripcircuit supervision...................................................................41Functional diagrams for control and interlocking....................42

Standard configuration B including directional earth-faultprotection and CB condition monitoring............................................44



Functional diagrams for protection.........................................46Functional diagram for disturbance recorder and tripcircuit supervision...................................................................52Functional diagrams for control and interlocking....................53

Standard configuration C including non-directional earth-faultprotection..........................................................................................57




Standard configuration D including non-directional earth-faultprotection and CB condition monitoring............................................67




Standard configuration E including directional earth-faultprotection with phase-voltage measurement....................................79




Standard configuration F including directional overcurrentprotection with voltage protection.....................................................93

Table of contents

2 REF615Application Manual



Functional diagrams for protection.........................................96Functional diagram for disturbance recorder and tripcircuit supervision.................................................................102Functional diagrams for control and interlocking..................104

Section 4 Requirements for measurement transformers..............111Current transformers......................................................................111

Current transformer requirements for non-directionalovercurrent protection................................................................111

Current transformer accuracy class and accuracy limitfactor....................................................................................111Non-directional overcurrent protection.................................112Example for non-directional overcurrent protection..............113

Section 5 IED physical connections.............................................115Inputs..............................................................................................115

Energizing inputs.......................................................................115Phase currents.....................................................................115Residual current...................................................................115Phase voltages.....................................................................115Residual voltage...................................................................116

Auxiliary supply voltage input....................................................116Binary inputs..............................................................................116Optional light sensor inputs.......................................................118

Outputs...........................................................................................118Outputs for tripping and controlling............................................118Outputs for signalling.................................................................119IRF.............................................................................................120

Section 6 Glossary.......................................................................121

Table of contents


Section 1 Introduction

1.1 This manual

Application Manual contains application descriptions and setting guidelines sortedper function. The manual can be used to find out when and for what purpose atypical protection function can be used. The manual can also be used whencalculating settings.

1.2 Intended audience

This manual addresses the protection and control engineer responsible forplanning, pre-engineering and engineering.

The protection and control engineer must be experienced in electrical powerengineering and have knowledge of related technology, such as communicationand protocols.

1MRS756378 E Section 1Introduction


1.3 Product documentation

1.3.1 Product documentation set

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Application manual

Operation manual

Installation manual

Service manual

Engineering manual

Commissioning manual

Communication protocolmanual

Technical manual

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Application manualApplication manual

Operation manualOperation manual

Installation manualInstallation manual

Service manualService manual

Engineering manualEngineering manual

Commissioning manualCommissioning manual

Communication protocolmanualCommunication protocolmanual

Technical manualTechnical manual

en07000220.vsd

IEC07000220 V1 EN

Figure 1: The intended use of manuals in different lifecycles

Engineering Manual contains instructions on how to engineer the IEDs. Themanual provides instructions on how to use the different tools for IED engineering.It also includes instructions on how to handle the tool component available to readdisturbance files from the IEDs on the basis of the IEC 61850 definitions. It furtherintroduces the diagnostic tool components available for IEDs and the PCM600 tool.

Installation Manual contains instructions on how to install the IED. The manualprovides procedures for mechanical and electrical installation. The chapters areorganized in chronological order in which the IED should be installed.

Commissioning Manual contains instructions on how to commission the IED. Themanual can also be used as a reference during periodic testing. The manualprovides procedures for energizing and checking of external circuitry, setting andconfiguration as well as verifying settings and performing directional tests. The

Section 1 1MRS756378 EIntroduction


chapters are organized in chronological order in which the IED should becommissioned.

Operation Manual contains instructions on how to operate the IED once it has beencommissioned. The manual provides instructions for monitoring, controlling andsetting the IED. The manual also describes how to identify disturbances and how toview calculated and measured network data to determine the cause of a fault.

Service Manual contains instructions on how to service and maintain the IED. Themanual also provides procedures for de-energizing, de-commissioning and disposalof the IED.

Application Manual contains application descriptions and setting guidelines sortedper function. The manual can be used to find out when and for what purpose atypical protection function can be used. The manual can also be used whencalculating settings.

Technical Manual contains application and functionality descriptions and listsfunction blocks, logic diagrams, input and output signals, setting parameters andtechnical data sorted per function. The manual can be used as a technical referenceduring the engineering phase, installation and commissioning phase, and duringnormal service.

Communication Protocol Manual describes a communication protocol supportedby the IED. The manual concentrates on vendor-specific implementations.

Point List Manual describes the outlook and properties of the data points specific tothe IED. The manual should be used in conjunction with the correspondingCommunication Protocol Manual.

Some of the manuals are not available yet.

1.3.2 Document revision historyDocument revision/date Product version HistoryA/20.12.2007 1.0 First release

B/08.02.2008 1.0 Content updated

C/02.07.2008 1.1 Content updated to correspond to theproduct version

D/04.03.2009 2.0 Content updated to correspond to theproduct version

E/03.07.2009 2.0 Content updated

Download the latest documents from the ABB web site http://www.abb.com/substationautomation.





1.3.3 Related documentationName of the document Document IDModbus Communication Protocol Manual 1MRS756468

DNP3 Communication Protocol Manual 1MRS756709

IEC 60870-5-103 Communication Protocol Manual 1MRS756710

IEC 61850 Engineering Guide 1MRS756475

Installation Manual 1MRS756375

Operation Manual 1MRS756708

Technical Manual 1MRS756887

1.4 Document symbols and conventions

1.4.1 Safety indication symbolsThis publication includes icons that point out safety-related conditions or otherimportant information.

The electrical warning icon indicates the presence of a hazardwhich could result in electrical shock.

The warning icon indicates the presence of a hazard which couldresult in personal injury.

The caution icon indicates important information or warning relatedto the concept discussed in the text. It might indicate the presenceof a hazard which could result in corruption of software or damageto equipment or property.

The information icon alerts the reader to important facts andconditions.

The tip icon indicates advice on, for example, how to design yourproject or how to use a certain function.

Although warning hazards are related to personal injury, it should be understoodthat operation of damaged equipment could, under certain operational conditions,



result in degraded process performance leading to personal injury or death.Therefore, comply fully with all warning and caution notices.

1.4.2 Document conventions• Abbreviations and acronyms in this manual are spelled out in Glossary.

Glossary also contains definitions of important terms.• Push button navigation in the LHMI menu structure is presented by using the

push button icons, for example:To navigate between the options, use and .

• HMI menu paths are presented in bold, for example:Select Main menu/Information.

• LHMI messages are shown in Courier font, for example:To save the changes in non-volatile memory, select Yes and press .

• Parameter names are shown in italics, for example:The function can be enabled and disabled with the Operation setting.

• Parameter values are indicated with quotation marks, for example:The corresponding parameter values are "On" and "Off".

• IED input/output messages and monitored data names are shown in Courierfont, for example:When the function starts, the START output is set to TRUE.

1.4.3 Functions, codes and symbolsTable 1: REF615 Functions, codes and symbols

Function IEC 61850 IEC 60617 IEC-ANSIProtection

Three-phase non-directionalovercurrent protection, low stage,instance 1

PHLPTOC1 3I> (1) 51P-1 (1)

Three-phase non-directionalovercurrent protection, high stage,instance 1

PHHPTOC1 3I>> (1) 51P-2 (1)

Three-phase non-directionalovercurrent protection, high stage,instance 2

PHHPTOC2 3I>> (2) 51P-2 (2)

Three-phase non-directionalovercurrent protection, instantaneousstage, instance 1

PHIPTOC1 3I>>> (1) 50P/51P (1)

Three-phase directional overcurrentprotection, low stage, instance 1 DPHLPDOC1 3I> → (1) 67-1 (1)

Three-phase directional overcurrentprotection, low stage, instance 2 DPHLPDOC2 3I> → (2) 67-1 (2)

Three-phase directional overcurrentprotection, high stage DPHHPDOC1 3I>> → 67-2

Non-directional earth-fault protection,low stage, instance 1 EFLPTOC1 I0> (1) 51N-1 (1)

Table continues on next page



Function IEC 61850 IEC 60617 IEC-ANSINon-directional earth-fault protection,low stage, instance 2 EFLPTOC2 I0> (2) 51N-1 (2)

Non-directional earth-fault protection,high stage, instance 1 EFHPTOC1 I0>> (1) 51N-2 (1)

Non-directional earth-fault protection,instantaneous stage EFIPTOC1 I0>>> 50N/51N

Directional earth-fault protection, lowstage, instance 1 DEFLPDEF1 I0> → (1) 67N-1 (1)

Directional earth-fault protection, lowstage, instance 2 DEFLPDEF2 I0> → (2) 67N-1 (2)

Directional earth-fault protection, highstage DEFHPDEF1 I0>> → 67N-2

Transient / intermittent earth-faultprotection INTRPTEF1 I0> → IEF 67NIEF

Non-directional (cross-country) earthfault protection, using calculated I0 EFHPTOC1 I0>> 51N-2

Negative-sequence overcurrentprotection, instance 1 NSPTOC1 I2> (1) 46 (1)

Negative-sequence overcurrentprotection, instance 2 NSPTOC2 I2> (2) 46 (2)

Phase discontinuity protection PDNSPTOC1 I2/I1> 46PD

Residual overvoltage protection,instance 1 ROVPTOV1 U0> (1) 59G (1)



Three-phase undervoltage protection,instance 1 PHPTUV1 3U< (1) 27 (1)



Three-phase overvoltage protection,instance 1 PHPTOV1 3U> (1) 59 (1)



Positive-sequence undervoltageprotection PSPTUV1 U1< 47U+

Negative-sequence overvoltageprotection NSPTOV1 U2> 47O-

Three-phase thermal protection forfeeders, cables and distributiontransformers

T1PTTR1 3Ith>F 49F

Circuit breaker failure protection CCBRBRF1 3I>/I0>BF 51BF/51NBF

Three-phase inrush detector INRPHAR1 3I2f> 68




Function IEC 61850 IEC 60617 IEC-ANSIMaster trip, instance 1 TRPPTRC1 Master Trip (1) 94/86 (1)

Master trip, instance 2 TRPPTRC2 Master Trip (2) 94/86 (2)

Arc protection, instance 1 ARCSARC1 ARC (1) 50L/50NL (1)



Control

Circuit-breaker control CBXCBR1 I ↔ O CB I ↔ O CB

Disconnector position indication,instance 1 DCSXSWI1 I ↔ O DC (1) I ↔ O DC (1)



Earthing switch indication ESSXSWI1 I ↔ O ES I ↔ O ES

Auto-reclosing DARREC1 O → I 79

Condition Monitoring

Circuit-breaker condition monitoring SSCBR1 CBCM CBCM

Trip circuit supervision, instance 1 TCSSCBR1 TCS (1) TCM (1)


Current circuit supervision CCRDIF1 MCS 3I MCS 3I

Fuse failure supervision SEQRFUF1 FUSEF 60

Measurement

Disturbance recorder RDRE1 - -

Three-phase current measurement,instance 1 CMMXU1 3I 3I

Sequence current measurement CSMSQI1 I1, I2, I0 I1, I2, I0

Residual current measurement,instance 1 RESCMMXU1 I0 In

Three-phase voltage measurement VMMXU1 3U 3U

Residual voltage measurement RESVMMXU1 U0 Vn

Sequence voltage measurement VSMSQI1 U1, U2, U0 U1, U2, U0

Three-phase power and energymeasurement PEMMXU1 P, E P, E



Section 2 REF615 overview

2.1 Overview

REF615 is a dedicated feeder IED (intelligent electronic device) designed for theprotection, control, measurement and supervision of utility substations andindustrial power systems. REF615 is a member of ABB’s Relion® product familyand part of its 615 protection and control product series. The 615 series IEDs arecharacterized by their compactness and withdrawable design.

Re-engineered from the ground up, the 615 series has been designed to unleash thefull potential of the IEC 61850 standard for communication and interoperabilitybetween substation automation devices.

The IED provides main protection for overhead lines and cable feeders indistribution networks. The IED is also used as back-up protection in applications,where an independent and redundant protection system is required.

Depending on the chosen standard configuration, the IED is adapted for theprotection of overhead line and cable feeders in isolated neutral, resistance earthed,compensated and solidly earthed networks. Once the standard configuration IEDhas been given the application-specific settings, it can directly be put into service.

The 615 series IEDs support a range of communication protocols including IEC61850 with GOOSE messaging, IEC 60870-5-103, Modbus® and DNP3.

2.1.1 Product version historyProduct version Product history1.0 Product released

1.1 • IRIG-B• Support for parallel protocols added: IEC 61850 and Modbus• X130 BIO added: optional for variants B and D• CB interlocking functionality enhanced• TCS functionality in HW enhanced• Non-volatile memory added

2.0 • Support for DNP3 serial or TCP/IP• Support for IEC 60870-5-103• Voltage measurement and protection• Power and energy measurement• New standard configurations E and F• Disturbance recorder upload via WHMI• Fuse failure supervision

1MRS756378 E Section 2REF615 overview


2.1.2 PCM600 and IED connectivity package version• Protection and Control IED Manager PCM600 Ver. 2.0 SP2 or later• REF615 Connectivity Package Ver. 2.5 or later

• Parameter Setting• Firmware Update• Disturbance Handling• Signal Monitoring• Lifecycle Traceability• Signal Matrix• Communication Management• Configuration Wizard• Label Printing• IED User Management

Download connectivity packages from the ABB web site http://www.abb.com/substationautomation

2.2 Operation functionality

2.2.1 Optional functions• Arc protection• Auto-reclosing• Modbus TCP/IP or RTU/ASCII• IEC 60870-5-103• DNP3 TCP/IP or serial

2.3 Physical hardware

The IED consists of two main parts: plug-in unit and case. The plug-in unit contentdepends on the ordered functionality.

Section 2 1MRS756378 EREF615 overview




Table 2: Plug-in unit and case

Main unit Slot ID Content optionsPlug-inunit

- HMI Small (4 lines, 16 characters)Large (8 lines, 16 characters)

X100 Auxiliary power/BOmodule

48-250 V DC/100-240 V AC; or 24-60 V DC2 normally-open PO contacts1 change-over SO contacts1 normally-open SO contact2 double-pole PO contacts with TCS1 dedicated internal fault output contact

X110 BI/O module Only with configurations B, D, E and F:8 BIs4 SO contacts

X120 AI/BI module Only with configurations A and B:3 phase current inputs (1/5 A)1 residual current input (1/5 A or 0.2/1 A)1)

1 residual voltage input (100, 110, 115 or 120 V)3 BIs

Only with configurations C, D, E and F:3 phase current inputs (1/5 A)1 residual current input (1/5 A or 0.2/1 A)1)

4 BIs

Case X130 AI/BI module Only with configurations E and F:3 phase voltage inputs (100, 110, 115 or 120 V)1 residual voltage input (100, 110, 115 or 120 V)4 BIs

Optional BI/Omodule

Only with configurations B and D:6 BIs3 SO contacts

X000 Optionalcommunicationmodule

See technical manual for details about different type ofcommunication modules.

1) The 0.2/1 A input is normally used in applications requiring sensitive earth-fault protection andfeaturing core-balance current transformers.

Rated values of the current and voltage inputs are basic setting parameters of theIED. The binary input thresholds are selectable within the range 18…176 V DC byadjusting the binary input setting parameters.

The connection diagrams of different hardware modules are presented in this manual.

See the installation manual for more information about the case andthe plug-in unit.



Table 3: Number of physical connections in standard configurations

Conf. Analog channels Binary channels CT VT BI BO

A 4 1 3 6

B 4 1 11 (17)1) 10 (13)1)

C 4 - 4 6

D 4 - 12 (18)1) 10 (13)1)

E 4 52) 16 10

F 4 52) 16 10

1) With optional BIO module2) One of the five channels reserved for future applications

2.4 Local HMI

A070704 V2 EN

Figure 2: LHMI

The LHMI of the IED contains the following elements:



• Display• Buttons• LED indicators• Communication port

The LHMI is used for setting, monitoring and controlling.

2.4.1 LCDThe LHMI includes a graphical LCD that supports two character sizes. Thecharacter size depends on the selected language. The amount of characters androws fitting the view depends on the character size.

Table 4: Characters and rows on the view

Character size Rows in view Characters on rowSmall, mono-spaced (6x12pixels)

5 rows10 rows with large screen

20

Large, variable width (13x14pixels)

4 rows8 rows with large screen

min 8

The display view is divided into four basic areas.

1 2

3 4

A070705 V2 EN

Figure 3: Display layout

1 Header

2 Icon

3 Content

4 Scroll bar (displayed when needed)



2.4.2 LEDsThe LHMI includes three protection indicators above the display: Ready, Start andTrip.

There are also 11 matrix programmable alarm LEDs on front of the LHMI. TheLEDs can be configured with PCM600 and the operation mode can be selectedwith the LHMI, WHMI or PCM600.

2.4.3 KeypadThe LHMI keypad contains push-buttons which are used to navigate in differentviews or menus. With push-buttons you can give open or close commands to oneprimary object, for example, a circuit breaker, disconnector or switch. The push-buttons are also used to acknowledge alarms, reset indications, provide help andswitch between local and remote control mode.

A071176 V1 EN

Figure 4: LHMI keypad with object control, navigation and command push-buttons and RJ-45 communication port

2.5 Web HMI

The WHMI enables the user to access the IED via a web browser. The supportedweb browser version is Internet Explorer 7.0 or later.

WHMI is disabled by default.

WHMI offers several functions.

• Alarm indications and event lists• System supervision• Parameter settings



• Measurement display• Disturbance records• Phasor diagram

The menu tree structure on the WHMI is almost identical to the one on the LHMI.

A070754 V3 EN

Figure 5: Example view of the WHMI

The WHMI can be accessed locally and remotely.

• Locally by connecting your laptop to the IED via the front communication port.• Remotely over LAN/WAN.

2.6 Authorization

The user categories have been predefined for the LHMI and the WHMI, each withdifferent rights and default passwords.

The default passwords can be changed with Administrator user rights.

User authorization is disabled by default but WHMI always usesauthorization.



Table 5: Predefined user categories

Username User rightsVIEWER Read only access

OPERATOR • Selecting remote or local state with (only locally)• Changing setting groups• Controlling• Clearing alarm and indication LEDs and textual indications

ENGINEER • Changing settings• Clearing event list• Clearing disturbance records• Changing system settings such as IP address, serial baud rate

or disturbance recorder settings• Setting the IED to test mode• Selecting language

ADMINISTRATOR • All listed above• Changing password• Factory default activation

For user authorization for PCM600, see PCM600 documentation.

2.7 Communication

The IED supports a range of communication protocols including IEC 61850, IEC60870-5-103, Modbus® and DNP3. Operational information and controls areavailable through these protocols. However, some communication functionality,for example, horizontal communication between the IEDs, is only enabled by theIEC 61850 communication protocol.

The IEC 61850 communication implementation supports all monitoring andcontrol functions. Additionally, parameter setting and disturbance file records canbe accessed using the IEC 61850 protocol. Disturbance files are available to anyEthernet-based application in the standard COMTRADE format. Further, the IEDcan send and receive binary signals from other IEDs (so called horizontalcommunication) using the IEC61850-8-1 GOOSE profile, where the highestperformance class with a total transmission time of 3 ms is supported. The IEDmeets the GOOSE performance requirements for tripping applications indistribution substations, as defined by the IEC 61850 standard. The IED cansimultaneously report events to five different clients on the station bus.

The IED can support five simultaneous clients. If PCM600 reserves one clientconnection, only four client connections are left, for example, for IEC 61850 andModbus.



All communication connectors, except for the front port connector, are placed onintegrated optional communication modules. The IED can be connected to Ethernet-based communication systems via the RJ-45 connector (100BASE-TX) or the fibre-optic LC connector (100BASE-FX). An optional serial interface is available forRS-232/RS-485 communication.



Section 3 REF615 variants

3.1 REF615 variant list

REF615 is intended for protection and control mainly in MV feeder applications.The product has a number of standard configurations covering a wide range ofprimary circuit configurations in distribution networks based on different systemearthing methods.

Some of the functions included in the IED's standard configurations are optional atthe time of placing the order. The description of standard configurations covers thefull functionality including options, presenting the functionality, flexibility andexternal connections of REF615 with a specific configuration as delivered from thefactory.

3.2 Presentation of standard configurations

Functional diagramsThe functional diagrams describe the IED's functionality from the protection,measuring, condition monitoring, disturbance recording, control and interlockingperspective. Diagrams show the default functionality with simple symbol logicsforming principle diagrams. The external connections to primary devices are alsoshown, stating the default connections to measuring transformers. The positivemeasuring direction of directional protection functions is towards the outgoing feeder.

The functional diagrams are divided into sections which each constitute onefunctional entity. The external connections are also divided into sections. Only therelevant connections for a particular functional entity are presented in each section.

Protection function blocks are part of the functional diagram. They are identifiedbased on their IEC 61850 name but the IEC based symbol and the ANSI functionnumber are also included. Some function blocks, such as PHHPTOC, are usedseveral times in the configuration. To separate the blocks from each other, the IEC61850 name, IEC symbol and ANSI function number are appended with a runningnumber, that is an instance number, from one upwards. If the block has no suffixafter the IEC or ANSI symbol, the function block has been used, that is,instantiated, only once. The IED’s internal functionality and the externalconnections are separated with a dashed line presenting the IED’s physical casing.

1MRS756378 E Section 3REF615 variants


Signal MatrixWith Signal Matrix the user can modify the standard configuration according to theactual needs. The IED is delivered from the factory with default connectionsdescribed in the functional diagrams for BI's, BO's, function to functionconnections and alarm LEDs. Signal Matrix has a number of different page views,designated as follows:

• Binary input• Binary output• Functions

The functions in different page views are identified by the IEC 61850 names withanalogy to the functional diagrams.

3.2.1 Standard configurationsThe feeder protection IED REF615 is available with six alternative standardconfigurations.

Table 6: Standard configurations

Description Std. conf.Non-directional overcurrent and directional earth-fault protection A and B

Non-directional overcurrent and non-directional earth-fault protection C and D

Non-directional overcurrent and directional earth-fault protection with phase-voltage basedmeasurements E

Directional overcurrent and earth-fault protection with phase-voltage based measurements,undervoltage and overvoltage protection F

Table 7: Supported functions

Functionality A B C D E FProtection1)

Three-phase non-directional overcurrent protection, low stage, instance 1 ● ● ● ● ● -

Three-phase non-directional overcurrent protection, high stage, instance 1 ● ● ● ● ● -

Three-phase non-directional overcurrent protection, high stage, instance 2 ● ● ● ● ● -

Three-phase non-directional overcurrent protection, instantaneous stage, instance 1 ● ● ● ● ● ●

Three-phase directional overcurrent protection, low stage, instance 1 - - - - - ●

Three-phase directional overcurrent protection, low stage, instance 2 - - - - - ●

Three-phase directional overcurrent protection, high stage - - - - - ●

Non-directional earth-fault protection, low stage (SEF), instance 1 - - ● ● - -

Non-directional earth-fault protection, low stage, instance 2 - - ● ● - -

Non-directional earth-fault protection, high stage, instance 1 - - ● ● - -

Non-directional earth-fault protection, instantaneous stage - - ● ● - -

Directional earth-fault protection, low stage (SEF), instance 1 ● ● - - ● ●


Section 3 1MRS756378 EREF615 variants


Functionality A B C D E FDirectional earth-fault protection, low stage, instance 2 ● ● - - ● ●

Directional earth-fault protection, high stage ● ● - - ● ●

Transient / intermittent earth-fault protection ● ● - - ● ●

Non-directional (cross-country) earth-fault protection, using calculated I0 ● ● - - ● ●

Negative-sequence overcurrent protection, instance 1 ● ● ● ● ● ●

Negative-sequence overcurrent protection, instance 2 ● ● ● ● ● ●

Phase discontinuity protection ● ● ● ● ● ●

Residual overvoltage protection, instance 1 - - - - - ●



Three-phase undervoltage protection, instance 1 - - - - - ●



Three-phase overvoltage protection, instance 1 - - - - - ●



Positive-sequence undervoltage protection - - - - - ●

Negative-sequence overvoltage protection - - - - - ●

Three-phase thermal protection for feeders, cables and distribution transformers ● ● ● ● ● ●

Circuit breaker failure protection ● ● ● ● ● ●

Three-phase inrush detector ● ● ● ● ● ●

Master trip, instance 1 ● ● ● ● ● ●

Master trip, instance 2 ● ● ● ● ● ●

Arc protection, instance 1 o o o o o o



Control

Circuit-breaker control with basic interlocking 2) ● ● ● ● ● ●

Circuit-breaker control with extended interlocking 3) - ● - ● ● ●

Disconnector position indication, instance 1 - ● - ● ● ●



Earthing switch indication - ● - ● ● ●

Auto-reclosing of one circuit breaker o o o o o o

Condition Monitoring

Circuit-breaker condition monitoring - ● - ● ● ●

Trip circuit supervision, instance 1 ● ● ● ● ● ●

Trip circuit supervision, instance 2 ● ● ● ● ● ●

Current circuit supervision - - - - ● ●




Functionality A B C D E FFuse failure supervision - - - - ● ●

Measurement

Disturbance recorder ● ● ● ● ● ●

Three-phase current measurement ● ● ● ● ● ●

Sequence current measurement ● ● ● ● ● ●

Residual current measurement ● ● ● ● ● ●

Three-phase voltage measurement - - - ● ●

Residual voltage measurement ● ● - - ● ●

Sequence voltage measurement - - - - ● ●

Three-phase power and energy measurement - - - - ● ●

● = Included,○ = Optional at the time of the order

1) Note that all directional protection functions can also be used in non-directional mode.2) Basic interlocking functionality: Closing of the circuit breaker can be enabled by a binary input signal. The actual interlocking scheme is

implemented outside the relay. The binary input serves as a "master interlocking input" and when energized it will enable circuit breakerclosing.

3) Extended interlocking functionality: The circuit breaker interlocking scheme is implemented in the relay configuration, based on primaryequipment position information (via binary inputs) and the logical functions available. The signal matrix of PCM600 can be used formodifying the interlocking scheme to suit your application.



3.2.2 Terminal diagrams

IECA070918 V5 EN

Figure 6: Terminal diagram for configurations A and B (overcurrent anddirectional earth-fault protection) [1]

[1] Additional BIO-module (X110 in the diagram) is included in the IED variant B



IECA070919 V5 EN

Figure 7: Terminal diagram for configurations C and D (overcurrent and non-directional earth-fault protection) [2]

[2] Additional BIO-module (X110 in the diagram) is included in the IED variant D



GUID-FA7A5888-5288-4969-84D0-00354EAB3997 V3 EN

Figure 8: Terminal diagram for configurations E and F (directionalovercurrent or earth-fault protection)



3.2.3 Connection diagrams

A071288 V5 EN

Figure 9: Connection diagram for configurations A and B (overcurrent anddirectional earth-fault protection) [3]

[3] Additional BIO-module (X110 in the diagram) is included in the IED variant B



A071290 V4 EN

Figure 10: Connection diagram for configurations C and D (overcurrent andnon-directional earth-fault protection) [4]

[4] Additional BIO-module (X110 in the diagram) is included in the IED variant D



GUID-F7601942-ACF2-47E2-8F21-CD9C1D2BC1F0 V3 EN

Figure 11: Connection diagram for configurations E and F (directionalovercurrent and earth-fault protection with phase-to-phase voltagemeasurement)



GUID-5D0135B3-3890-497A-8AAA-0362730C8682 V1 EN

Figure 12: Connection diagram for configurations E and F (directionalovercurrent and earth-fault protection with phase-to-earth voltagemeasurement)

3.3 Standard configuration A including directional earth-fault protection

3.3.1 ApplicationsThe standard configuration for directional earth-fault protection is mainly intendedfor cable and overhead-line feeder applications in isolated and resonant-eartheddistribution networks.

The IED with this standard configuration is delivered from the factory with defaultsettings and parameters. The end-user flexibility for incoming, outgoing andinternal signal designation within the IED enables this configuration to be furtheradapted to different primary circuit layouts and the related functionality needs bymodifying the internal functionality using PCM600.



3.3.2 FunctionsTable 8: Functions included in the REF615 standard configuration with directional earth-fault

protection

Function IEC 61850 IEC ANSIThree-phase non-directional overcurrentprotection, low stage

PHLPTOC1 3I> 51P-1

Three-phase non-directional overcurrentprotection, high stage, instance 1

PHHPTOC1 3I>> (1) 51P-2 (1)


PHHPTOC2 3I>> (2) 51P-2 (2)

Three-phase non-directional overcurrentprotection, instantaneous stage

PHIPTOC1 3I>>> 50P/51P

Arc protection ARCSARC1ARCSARC2ARCSARC3

ARC (1)ARC (2)ARC (3)

50L/50NL (1)50L/50NL (2)50L/50NL (3)

Directional earth-fault protection, low stage,instance 1

DEFLPDEF1 I0> → (1) 67N-1 (1)


DEFLPDEF2 I0> → (2) 67N-1 (2)

Directional earth-fault protection, high stage DEFHPDEF1 I0>> → 67N-2

Transient/intermittent earth-fault protection INTRPTEF1 I0> → IEF 67NIEF

Non-directional earth-fault protection, highstage, calculated I0 current (Double earth-faultprotection)

EFHPTOC1 I0>> 51N-2

Negative-sequence overcurrent protection,instance 1

NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)

Phase discontinuity PDNSPTOC1 I2/I1> 46PD


Three-phase thermal protection for feeders,cables and distribution transformers

T1PTTR1 3Ith> 49F

Autoreclosure DARREC1 O → I 79


Master Trip TRPPTRC1TRPPTRC2

Master Trip (1)Master Trip (2)

94/86 (1)94/86 (2)




Three-phase current measurement CMMXU1 3I 3I


Residual current measurement RESCMMXU1 I0 In




3.3.2.1 Default I/O connections

Binary Input Default usage Connector-PinsX120-BI1 Blocking of Overcurrent Instantaneous Stage X120-1,2

X120-BI2 Circuit Breaker Closed position indication X120-3,2

X120-BI3 Circuit Breaker Open position indication X120-4,2

Binary Output Default usage Connector-PinsX100-PO1 Close Circuit Breaker X100-6,7

X100-PO2Circuit Breaker Failure protection trip to upstreambreaker X100-8,9

X100-PO3 Open Circuit Breaker / trip coil 1 X100-16,17,18,19


X100-SO1 General Start Indication X100-10,11,12

X100-SO2 General Operate Indication X100-13,14,15

LED Default usage1 Non-Directional Overcurrent Operate

2 Directional/Intermittent Earth fault Operate

3 Double (Cross country) Earth fault Operate

4 Negative Seq. Overcurrent/Phase Discontinuity Operate

5 Thermal Overload Alarm

6 Breaker Failure Operate

7 Disturbance Recorder Triggered

8 Not connected

9 Trip Circuit Supervision Alarm

10 ARC Protection Operate

11 Auto Reclose in Progress

3.3.3 Functional diagramsThe functional diagrams describe the default input, output, alarm LED and function-to-function connections. The default connections can be viewed and changed withPCM600 according to the application requirements, if necessary.

The analog channels have fixed connections towards the different function blocksinside the IED’s standard configuration. Exceptions from this rule are the 12analog channels available for the disturbance recorder function. These channels arefreely selectable and a part of the disturbance recorder’s parameter settings, thusnot included in the PCM600 functionality.



The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with 3I represents the three phase currents.The signal marked with I0 represents the measured residual current via a corebalance current transformer. The signal marked with U0 represents the measuredresidual voltage via open delta connected voltage transformers.

The EFHPTOC protection function block for double (cross-country) earth-faultsuses the calculated residual current originating from the measured phase currents.

3.3.3.1 Functional diagrams for protection

The functional diagrams describe the IED’s protection functionality in detail andaccording to the factory set default connections.

A071316 V3 EN

Figure 13: Overcurrent protection



Four overcurrent stages are offered for overcurrent and short-circuit protection.The instantaneous stage (PHIPTOC1) can be blocked by energizing the binaryinput 1 (X120:1-2). Two negative sequence overcurrent stages (NSPTOC1 andNSPTOC2) are offered for phase unbalance protection. The inrush detectionblock’s (INRPHAR1) output BLK2H enables either blocking the function ormultiplying the active settings for any of the described protection function blocks.

All operate signals are connected to the Master Trip and to the alarm LEDs. LED 1is used for overcurrent and LED 4 for negative-sequence overcurrent protectionoperate indication. LED 4 is also used for phase discontinuity protection operateindication.

There are four IED variant-specific setting groups. Parameters can be setindependently for each setting group.

The active setting group (1...4) can be changed with a parameter. The active settinggroup can also be changed via a binary input if the binary input is enabled for this.To enable the change of the active setting group via a binary input, connect a freebinary input with PCM600 to the ActSG input of the SGCB-block.

Table 9: Binary input states and corresponding active setting groups

BI state Active setting groupOFF 1

ON 2

The active setting group defined by a parameter is overridden when a binary inputis enabled for changing the active setting group.



A071318 V4 EN

Figure 14: Directional earth-fault protection

Three stages are offered for directional earth-fault protection. In addition, there is adedicated protection stage (INTRPTEF) either for transient-based earth-faultprotection or for cable intermittent earth-fault protection in compensated networks.

A dedicated non-directional earth-fault protection block (EFHPTOC) is intendedfor protection against double earth-fault situations in isolated or compensatednetworks. This protection function uses the calculated residual current originatingfrom the phase currents.

All operate signals are connected to the Master Trip and also to the alarm LEDs.LED 2 is used for directional earth-fault and LED 3 for double earth-faultprotection operate indication.



A071320 V4 EN

Figure 15: Phase discontinuity, thermal overload and circuit breaker failureprotection

The phase discontinuity protection (PDNPSTOC1) provides protection forinterruptions in the normal three-phase load supply, for example, in downedconductor situations. The operate signal of the phase discontinuity protection isconnected to the Master Trip and also to an alarm LED and the disturbancerecorder. The thermal overload protection (T1PTTR1) provides indication onoverload situations. The operate signal of the phase discontinuity protection isconnected to the Master Trip and also to an alarm LED. LED 4 is used for thephase discontinuity protection operate indication, the same as for negativesequence overcurrent protection operate indication, and LED 5 is used for thethermal overload protection alarm indication.

The breaker failure protection (CCBRBRF1) is initiated via the start input by anumber of different protection stages in the IED. The breaker failure protectionfunction offers different operating modes associated with the circuit breakerposition and the measured phase and residual currents. The breaker failureprotection has two operating outputs: TRRET and TRBU. The TRRET operateoutput is used for re-tripping its own breaker through the Master Trip 2. The TRBUoutput is used to give a back-up trip to the breaker feeding upstream. For thispurpose, the TRBU operate output signal is connected to the output PO2 (X100:8-9). LED 6 is used for back-up (TRBU) operate indication.



A071322 V4 EN

Figure 16: Arc protection

Arc protection (ARCSARC1...3) and autoreclosing (DARREC1) are included asoptional functions.

The arc protection offers individual function blocks for three ARC sensors that canbe connected to the IED. Each arc protection function block has two differentoperation modes, with or without the phase and residual current check. Operatesignals from the arc protection function blocks are connected to the Master Tripand also to the alarm LED 10 as a common operate indication.

The autorecloser is configured to be initiated by operate signals from a number ofprotection stages through the INIT1...5 inputs. It is possible to create individualautoreclose sequences for each input.

The autoreclose function can be blocked with the INHIBIT_RECL input. As adefault, the operation of selected protection functions are connected to this input. A



control command to the circuit breaker, either local or remote, also blocks theautoreclose function via the CBXCBR-selected signal.

The autoreclose sequence in progress indication is connected to the alarm LED 11.

3.3.3.2 Functional diagrams for disturbance recorder and trip circuitsupervision

PHLPTOC1-start

PHHPTOC1-start

PHHPTOC2-start

PHIPTOC1-start

NSPTOC1-start

NSPTOC2-start

DEFLPDEF1-start

DEFLPDEF2-start

DEFHPDEF1-start

INTRPTEF1-start

EFHPTOC1-start

PDNSPTOC1-start

T1PTTR1-start

CCRBRF1-trret

CCRBRF1-trbu

OR

PHLPTOC1-operate

PHHPTOC1-operate

PHHPTOC2-operate

PHIPTOC1-operate

LED7 (DR TRIGGERED)

OR

OR

INTRPTEF1-operate

EFHPTOC1-operate

PDNSPTOC1-operate

INRPHAR1-blk2h

T1PTTR1-operate

OR

ARCSARC1-operate

ARCSARC2-operate

ARCSARC3-operate

DARREC1-inpro

OR

NSPTOC1-operate

NSPTOC2-operate

ARCSARC1-fault_arc_det



DEFLPDEF1-operate

DEFLPDEF2-operate

DEFHPDEF1-operate

DARREC1-close cb

DARREC1-unsuc_recl

BI 1 (Blocking)

BI 2 (CB Closed)

BI 3 (CB Open)

DISTURBANCE RECORDER

TCSSCBR1

ALARMBLOCK

TCSSCBR2

ALARMBLOCK

OROR

TRPPTRC1- trip

TRPPTRC2- tripLED9 (TCS ALARM)

TRIP CIRCUIT SUPERVISION

RDRE1

TRIGGEREDBI#1

BI#2

BI#3

BI#4

BI#5

BI#6

BI#7

BI#8

BI#9

BI#10

BI#11

BI#12

BI#13

BI#14

BI#15

BI#16

BI#17

BI#18

BI#19

BI#20

BI#21

BI#22

BI#23

BI#24

BI#25

BI#26

BI#27

BI#28

BI#29

BI#30

BI#31

BI#32

A071324 V4 EN

Figure 17: Disturbance recorder

The disturbance recorder has 64 digital inputs, of which 32 are connected asdefault. All start and operate signals from the protection stages are routed to triggerthe disturbance recorder or alternatively only to be recorded by the disturbancerecorder depending on the parameter settings. Additionally, the selectedautorecloser, the ARC protection signals and the three binary inputs from X120 arealso connected.

Two separate trip circuit supervision functions are included, TCSSCBR1 for PO3(X100:16-19) and TCSSCBR2 for PO4 X100:20-23). Both functions are blockedby the Master Trip (TRPPTRC1 and TRPPTRC1) and the circuit breaker opensignal. The TCS alarm indication is connected to LED 9.



By default it is expected that there is no external resistor in thecircuit breaker tripping coil circuit connected parallel with circuitbreaker normally open auxiliary contact.

3.3.3.3 Functional diagrams for control and interlocking

A071326 V4 EN

Figure 18: Master trip

The operate signals from the protections are connected to the two trip outputcontacts PO3 (X100:16-19) and PO4 (X100:20-23) via the corresponding MasterTrips TRPPTRC1 and TRPPTRC2. Open control commands to the circuit breakerfrom local or remote CBXCBR1-exe_op or from the auto-recloser DARREC1-open_cb are connected directly to the output PO3 (X100:16-19).

TRPPTRC1 and 2 provide the lockout/latching function, event generation and thetrip signal duration setting. If the lockout operation mode is selected, one binaryinput can be reassigned to the RST_LKOUT input of the Master Trip to enableexternal reset with a push button.



A071328 V3 EN

Figure 19: Circuit breaker control

The ENA_CLOSE input, that is, enable the closing of the circuit breaker, in thebreaker control function block CBXCBR is a combination of the status of theMaster Trip. The open operation is always enabled.

If the ENA_CLOSE signal is completely removed from the breakercontrol function block CBXCBR with PCM600, the functionassumes that the breaker close commands are allowed continuously.

A071330 V3 EN

Figure 20: Alarm indication

The signal outputs from the IED are connected to give dedicated information on:

• Start of any protection function SO1 (X100:10-12)• Operation (trip) of any protection function SO2 (X100: 13-15)



TPGAPC are timers and used for setting the minimum pulse length for the outputs.There are four generic timers (TPGAPC1..4) available in the IED. The remainingones not described in the functional diagram are available in PCM600 forconnection where applicable.

3.4 Standard configuration B including directional earth-fault protection and CB condition monitoring



3.4.2 FunctionsTable 10: Functions included in the REF615 standard configuration with directional earth-fault

protection


PHLPTOC1 3I> 51P-1


PHHPTOC1 3I>> (1) 51P-2 (1)


PHHPTOC2 3I>> (2) 51P-2 (2)





50L/50NL (1)50L/50NL (2)50L/50NL (3)


DEFLPDEF1 I0> → (1) 67N-1 (1)


DEFLPDEF2 I0> → (2) 67N-1 (2)




EFHPTOC1 I0>> 51N-2




Function IEC 61850 IEC ANSINegative-sequence overcurrent protection,instance 1

NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)




T1PTTR1 3Ith> 49F




Master trip (1)Master trip (2)

94/86 (1)94/86 (2)




Circuit breaker condition monitoring SSCBR1 CBCM CBCM






Binary Input Default usage Connector-PinsX110-BI2 Directional Earth Fault Protection's Basic Angle Control X110-3,4

X110-BI3 Circuit Breaker low Gas Pressure indication X110-5,6

X110-BI4 Circuit Breaker Spring Charged indication X110-6,7

X110-BI5 CB Truck in (Service position) indication X110-8,9

X110-BI6 CB Truck out (Test position) indication X110-10,9

X110-BI7 Earthing Switch Closed indication X110-11,12

X110-BI8 Earthing Switch Open indication X110-13,12

X120-BI1 Blocking of Overcurrent Instantaneous Stage X120-1,2

X120-BI2 Circuit Breaker Closed indication X120-3,2

X120-BI3 Circuit Breaker Open indication X120-4,2


X100-PO2 Circuit Breaker Failure protection trip to upstream breaker X100-8,9






Binary Output Default usage Connector-PinsX100-SO1 General Start Indication X100-10,11,12


X110-SO1 Upstream Overcurrent Blocking X110-14,15,16

X110-SO2 Overcurrent Operate Alarm X110-17,18,19

X110-SO3 Earth fault Operate Alarm X110-20,21,22


2 Directional/Intermittent Earth fault Operate

3 Double (Cross country) Earth fault Operate





8 Circuit Breaker Condition Monitoring Alarm












A071332 V4 EN




The upstream blocking from the start of the overcurrent second high stage(PHHPTOC2) is connected to the output SO1 (X110:14-16). This output is used



for sending a blocking signal to the relevant overcurrent protection stage of theIED at the infeeding bay.





ON 2




I > (1)DEFLPDEF1

START

OPERATE

I0

U0

ENA_MULT

67N-1 (1)

0

RCA_CTL

BLOCK

I > (2)DEFLPDEF2

START

OPERATE

I0

U0

ENA_MULT

67N-1 (2)

0

RCA_CTL

BLOCK

I >>

DEFHPDEF

START

OPERATE

I0

U0

ENA_MULT

67N-2

0

RCA_CTL

BLOCK

LED2 (DEF OPERATE)OR

DIRECTIONAL OR INTERMITTENT EARTH FAULT PROTECTION

DOUBLE (CROSS COUNTRY) EARTH FAULT PROTECTION

LED3 (NEF OPERATE)

I >>

EFHPTOC1

START

OPERATE

I0

BLOCK

ENA_MULTI

51N-2

0

Calculated Io

X110

3

4

BI 2 (BACTRL)

INTRPTEF1

START

OPERATEU0

BLOCK BLK_EF

67NIEF

I >0

I0

A071334 V4 EN




The binary input 2 (X110:3-4) is intended for directional earth-fault protectionblocks’ relay characteristic angle (RCA: 0°/-90°) or operation mode (I0Sinφ/I0Cosφ) change. All operate signals are connected to the Master Trip and also tothe alarm LEDs. LED 2 is used for directional earth-fault and LED 3 for double earth-fault protection operate indication.



A071320 V4 EN






A071338 V5 EN







The autoreclose function can be blocked with the INHIBIT_RECL input. As adefault, the operation of selected protection functions are connected to this input. Acontrol command to the circuit breaker, either local or remote, also blocks theautoreclose function via the CBXCBR-selected signal.

The circuit breaker availability for the autoreclosure sequence is expressed with thebinary input 4 (X110:6-7) by connecting the input signal to the CB_RDY input. Incase this signal is completely removed from the autoreclose function block withPCM600, the function assumes that the breaker is available all the time.


3.4.3.2 Functional diagram for disturbance recorder and trip circuit supervision

PHLPTOC1-start

PHHPTOC1-start

PHHPTOC2-start

PHIPTOC1-start

NSPTOC1-start

NSPTOC2-start

DEFLPDEF1-start

DEFLPDEF2-start

DEFHPDEF1-start

INTRPTEF1-start

EFHPTOC1-start

PDNSPTOC1-start

T1PTTR1-start

CCRBRF1-trret

CCRBRF1-trbu

OR

PHLPTOC1-operate

PHHPTOC1-operate

PHHPTOC2-operate

PHIPTOC1-operate

LED7 (DR TRIGGERED)

OR

OR

INTRPTEF1-operate

EFHPTOC1-operate

PDNSPTOC1-operate

INRPHAR1-blk2h

T1PTTR1-operate

OR

ARCSARC1-operate

ARCSARC2-operate

ARCSARC3-operate

DARREC1-inpro

OR

NSPTOC1-operate

NSPTOC2-operate




DEFLPDEF1-operate

DEFLPDEF2-operate

DEFHPDEF1-operate

DARREC1-close cb

DARREC1-unsuc_recl

BI 1 (Blocking)

BI 2 (CB Closed)

BI 3 (CB Open)


TCSSCBR1

ALARMBLOCK

TCSSCBR2

ALARMBLOCK

OROR

TRPPTRC1- trip



RDRE1

TRIGGEREDBI#1

BI#2

BI#3

BI#4

BI#5

BI#6

BI#7

BI#8

BI#9

BI#10

BI#11

BI#12

BI#13

BI#14

BI#15

BI#16

BI#17

BI#18

BI#19

BI#20

BI#21

BI#22

BI#23

BI#24

BI#25

BI#26

BI#27

BI#28

BI#29

BI#30

BI#31

BI#32

A071324 V4 EN


The disturbance recorder has 64 digital inputs, of which 32 are connected asdefault. All start and operate signals from the protection stages are routed to triggerthe disturbance recorder or alternatively only to be recorded by the disturbancerecorder depending on the parameter settings. Additionally, the selected



autorecloser, the ARC protection signals and the three binary inputs from X120 arealso connected.




A071326 V4 EN



TRPPTRC1 and 2 provide the lockout/latching function, event generation and thetrip signal duration setting. If the lockout operation mode is selected, one binary



input can be reassigned to the RST_LKOUT input of the Master Trip to enableexternal reset with a push button.

A071344 V4 EN


There are three disconnector status blocks (DCSXSWI1…3) available in the IED.The remaining two not described in the functional diagram are available inPCM600 for connection where applicable.

The binary inputs 5 and 6 of the additional card X110 are used for busbardisconnector (DCSXSWI1) or circuit-breaker truck position indication.

Table 12: Device positions indicated by binary inputs 5 and 6

Primary device position Input to be energized Input 5 (X110:8-9) Input 6 (X110:10-9)

Busbar disconnector closed x

Busbar disconnector open x

Circuit breaker truck in service position x

Circuit breaker truck in test position x

The binary inputs 7 and 8 (X110:11-13) are designed for the position indication ofthe line-side earth switch.



The circuit breaker closing is enabled when the ENA_CLOSE input is activated.The input can be activated by the configuration logic, which is a combination ofthe disconnector or breaker truck and earth switch position statuses and the statusesof the master trip logics and gas pressure alarm and circuit-breaker spring charging.This combination of interlocking conditions is called LOCAL_FEEDER_READYand is transferred also to the remote end via binary signal transfer. The OKPOSoutput from DCSXSWI defines if the disconnector or breaker truck is definitelyeither open/in test position or close/in service position. This, together with the openearth switch and non-active trip signals, activates the close-enable signal to thecircuit breaker control function block. The open operation is always enabled. Theauto-recloser close command signals are directly connected to the output contactPO1 (X100:6-7).

The ITL_BYPASS input can be used, for example, to always enable the closing ofthe circuit breaker when the circuit breaker truck is in the test position, despite ofthe interlocking conditions being active when the circuit breaker truck is closed inservice position.


If REMOTE_FEEDER_READY information is missing, forexample in case of protection communication not connected, itdisables the circuit breaker closing in the local IED.

The circuit breaker condition monitoring function (SSCBR) supervises the circuitbreaker status based on the binary input information connected and measuredcurrent levels. The function introduces various supervision methods. Thecorresponding supervision alarm signals are routed to LED 8.



A071346 V4 EN



• Start of any protection function SO1 (X100:10-12)• Operation (trip) of any protection function SO2 (X100: 13-15)




3.5 Standard configuration C including non-directionalearth-fault protection

3.5.1 ApplicationsThe standard configuration for non-directional earth-fault protection is mainlyintended for cable and overhead-line feeder applications in directly or resistanceearthed distribution networks.


3.5.2 FunctionsTable 13: Functions included in the REF615 standard configuration with non-directional earth-

fault protection


PHLPTOC1 3I> 51P-1


PHHPTOC1 3I>> (1) 51P-2 (1)


PHHPTOC2 3I>> (2) 51P-2 (2)





50L/50NL (1)50L/50NL (2)50L/50NL (3)

Non-directional earth-fault protection, low stage EFLPTOC1 I0> (1) 51N-1 (1)

Non-directional earth-fault protection, low stage(Non-directional sensitive earth-fault)

EFLPTOC2 I0> (2) 51N-1 (2)

Non-directional earth-fault protection, high stage EFHPTOC1 I0>> 51N-2

Non-directional earth-fault protection,instantaneous stage

EFIPTOC1 I0>>> 50N/51N


NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)




T1PTTR1 3Ith> 49F





Function IEC 61850 IEC ANSICircuit breaker failure protection CCBRBRF1 3I>/I0>BF 51BF/51NBF



94/86 (1)94/86 (2)








Binary Input Default usage Connector-PinsX120-BI1 Blocking of Overcurrent Instantaneous Stage X120-1,2



X120-BI4 Reset of Master Trip Lockout X120-5,6








2 Non-Directional Earth fault Operate

3 Sensitive Earth fault Operate





8 Not connected






3.5.3 Functional diagrams

The functional diagrams describe the default input, output, alarm LED and function-to-function connections. The default connections can be viewed and changed withPCM600 according to the application requirements, if necessary.


The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with 3I represents the three phase currents.The signal marked with I0 represents the measured residual current via asummation connection of the phase current transformers.





A071348 V3 EN





The active setting group (1...4) can be changed with a parameter. The active settinggroup can also be changed via a binary input if the binary input is enabled for this.



To enable the change of the active setting group via a binary input, connect a freebinary input with PCM600 to the ActSG input of the SGCB-block.



ON 2


LED2 (EF OPERATE)OR

EARTH FAULT PROTECTION

SENSITIVE EARTH FAULT PROTECTION

LED3 (SEF OPERATE)

I >

EFLPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

51N-1

0

I >

EFLPTOC2

START

OPERATE

I0

BLOCK

ENA_MULT

51N-1

0

I >>

EFHPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

51N-2

0

I >>>

EFIPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

50N

0

A071350 V4 EN

Figure 30: Non-directional earth-fault protection

Four stages are offered for non-directional earth-fault protection. One stage isdedicated to sensitive earth-fault protection.

All operate signals are connected to the Master Trip and also to the alarm LEDs.LED 2 is used for directional earth-fault and LED 3 for the sensitive earth-faultprotection operate indication.



A071352 V4 EN






A071354 V4 EN





The autoreclose function can be blocked with the INHIBIT_RECL input. As adefault, the operation of selected protection functions are connected to this input. A



control command to the circuit breaker, either local or remote, also blocks theautoreclose function via the CBXCBR-selected signal.

The circuit breaker availability for the autoreclosure sequence is expressed with theCB_RDY input in DARREC1. In the configuration, this signal is not connected toany of the binary inputs. As a result, the function assumes that the breaker isavailable all the time.



PHLPTOC1-start

PHHPTOC1-start

PHHPTOC2-start

PHIPTOC1-start

NSPTOC1-start

NSPTOC2-start

EFLPTOC1-start

EFHPTOC1-start

EFIPTOC1-start

EFLPTOC2-start

PDNSPTOC1-start

T1PTTR1-start

CCRBRF1-trret

CCRBRF1-trbu

OR

PHLPTOC1-operate

PHHPTOC1-operate

PHHPTOC2-operate

PHIPTOC1-operate

LED7 (DR TRIGGERED)

OR

OR

EFLPTOC2-operate

PDNSPTOC1-operate

INRPHAR1-blk2h

T1PTTR1-operate

OR

ARCSARC1-operate

ARCSARC2-operate

ARCSARC3-operate

DARREC1-inpro

OR

NSPTOC1-operate

NSPTOC2-operate




EFLPTOC11-operate

EFHPTOC1-operate

EFIPTOC1-operate

DARREC1-close cb

DARREC1-unsuc_recl

BI 1(Blocking)

BI 2 (CB Closed)

BI 3 (CB Open)


TCSSCBR1

ALARMBLOCK

TCSSCBR2

ALARMBLOCK

OROR

TRPPTRC1- trip



RDRE1

TRIGGEREDBI#1

BI#2

BI#3

BI#4

BI#5

BI#6

BI#7

BI#8

BI#9

BI#10

BI#11

BI#12

BI#13

BI#14

BI#15

BI#16

BI#17

BI#18

BI#19

BI#20

BI#21

BI#22

BI#23

BI#24

BI#25

BI#26

BI#27

BI#28

BI#29

BI#30

BI#31

BI#32

A071356 V3 EN


The disturbance recorder has 64 digital inputs, of which 32 are connected asdefault. All start and operate signals from the protection stages are routed to triggerthe disturbance recorder or alternatively only to be recorded by the disturbancerecorder depending on the parameter settings. Additionally, the selectedautorecloser, the ARC protection signals and the three binary inputs from X120 arealso connected.

Two separate trip circuit supervision functions are included, TCSSCBR1 for PO3(X100:16-19) and TCSSCBR2 for PO4 X100:20-23). Both functions are blocked



by the Master Trip (TRPPTRC1 and TRPPTRC1) and the circuit breaker opensignal. The TCS alarm indication is connected to LED 9.



A071358 V4 EN






A071360 V3 EN


The ENA_CLOSE input, that is, enable the closing of the circuit breaker, in thebreaker control function block CBXCBR is a combination of the status of theMaster Trip. The open operation is always enabled.


A071362 V3 EN



• Start of any protection function SO1 (X100:10-12)• Operation (trip) of any protection function SO2 (X100:13-14)

TPGAPC are timers and used for setting the minimum pulse length for the outputs.There are four generic timers (TPGAPC1..4) available in the IED. The remaining



ones not described in the functional diagram are available in PCM600 forconnection where applicable.

3.6 Standard configuration D including non-directionalearth-fault protection and CB condition monitoring

3.6.1 ApplicationsThe standard configuration for non-directional earth-fault protection is mainlyintended for cable and overhead-line feeder applications in directly or resistanceearthed distribution networks.


3.6.2 FunctionsTable 15: Functions included in the REF615 standard configuration with non-directional earth-

fault protection


PHLPTOC1 3I> 51P-1


PHHPTOC1 3I>> (1) 51P-2 (1)


PHHPTOC2 3I>> (2) 51P-2 (2)





50L/50NL (1)50L/50NL (2)50L/50NL (3)

Non-directional earth-fault protection, low stage EFLPTOC1 I0> (1) 51N-1 (1)

Non-directional earth-fault protection, low stage(Non-directional sensitive earth-fault)

EFLPTOC2 I0> (2) 51N-1 (2)

Non-directional earth-fault protection, high stage EFHPTOC1 I0>> 51N-2

Non-directional earth-fault protection,instantaneous stage

EFIPTOC1 I0>>> 50N/51N


NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)





Function IEC 61850 IEC ANSIThree-phase inrush detector INRPHAR1 3I2f> 68


T1PTTR1 3Ith> 49F



Master trip TRPPTRC1TRPPTRC2


94/86 (1)94/86 (2)









Binary Input Default usage Connector-PinsX110-BI2 Auto Reclose External Start Command X110-3,4

X110-BI3 Circuit Breaker low Gas Pressure indication X110-5,6

X110-BI4 Circuit Breaker Spring Charged indication X110-6,7



X110-BI7 Earthing Switch Closed indication X110-11,12

X110-BI8 Earthing Switch Open indication X110-13,12

X120-BI1 Blocking of Overcurrent Instantaneous Stage X120-1,2



X120-BI4 Reset of Master Trip Lockout X120-5,6







X110-SO1 Upstream Overcurrent Blocking X110-14,15,16

X110-SO2 Overcurrent Operate Alarm X110-17,18,19

X110-SO3 Earth fault Operate Alarm X110-20,21,22




2 Non-Directional Earth fault Operate

3 Sensitive Earth fault Operate





8 Circuit Breaker Condition Monitoring Alarm







The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with 3I represents the three phase currents.The signal marked with I0 represents the measured residual current via asummation connection of the phase current transformers.





A071364 V4 EN




The upstream blocking from the start of the overcurrent second high stage(PHHPTOC2) is connected to the output SO1 (X110:14-16). This output is usedfor sending a blocking signal to the relevant overcurrent protection stage of theIED at the infeeding bay.







ON 2


LED2 (EF OPERATE)OR

EARTH FAULT PROTECTION

SENSITIVE EARTH FAULT PROTECTION

LED3 (SEF OPERATE)

I >

EFLPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

51N-1

0

I >

EFLPTOC2

START

OPERATE

I0

BLOCK

ENA_MULT

51N-1

0

I >>

EFHPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

51N-2

0

I >>>

EFIPTOC1

START

OPERATE

I0

BLOCK

ENA_MULT

50N

0

A071350 V4 EN

Figure 38: Non-directional earth-fault protection

Four stages are offered for non-directional earth-fault protection. One stage isdedicated to sensitive earth-fault protection.

All operate signals are connected to the Master Trip and also to the alarm LEDs.LED 2 is used for directional earth-fault and LED 3 for the sensitive earth-faultprotection operate indication.



A071352 V4 EN






A071370 V4 EN




The autorecloser is configured to be initiated by operate signals from a number ofprotection stages through the INIT1...5 inputs. The INIT6 input in the autorecloserfunction block is controlled by a binary input 2 (X110:3-4) enabling the use of the



external start command. It is possible to create individual autoreclose sequences foreach input.





PHLPTOC1-start

PHHPTOC1-start

PHHPTOC2-start

PHIPTOC1-start

NSPTOC1-start

NSPTOC2-start

EFLPTOC1-start

EFHPTOC1-start

EFIPTOC1-start

EFLPTOC2-start

PDNSPTOC1-start

T1PTTR1-start

CCRBRF1-trret

CCRBRF1-trbu

OR

PHLPTOC1-operate

PHHPTOC1-operate

PHHPTOC2-operate

PHIPTOC1-operate

LED7 (DR TRIGGERED)

OR

OR

EFLPTOC2-operate

PDNSPTOC1-operate

INRPHAR1-blk2h

T1PTTR1-operate

OR

ARCSARC1-operate

ARCSARC2-operate

ARCSARC3-operate

DARREC1-inpro

OR

NSPTOC1-operate

NSPTOC2-operate




EFLPTOC11-operate

EFHPTOC1-operate

EFIPTOC1-operate

DARREC1-close cb

DARREC1-unsuc_recl

BI 1(Blocking)

BI 2 (CB Closed)

BI 3 (CB Open)


TCSSCBR1

ALARMBLOCK

TCSSCBR2

ALARMBLOCK

OROR

TRPPTRC1- trip



RDRE1

TRIGGEREDBI#1

BI#2

BI#3

BI#4

BI#5

BI#6

BI#7

BI#8

BI#9

BI#10

BI#11

BI#12

BI#13

BI#14

BI#15

BI#16

BI#17

BI#18

BI#19

BI#20

BI#21

BI#22

BI#23

BI#24

BI#25

BI#26

BI#27

BI#28

BI#29

BI#30

BI#31

BI#32

X110

3

4

BI 2 (AR ext. start)

A071372 V4 EN


The disturbance recorder has 64 digital inputs, of which 32 are connected asdefault. All start and operate signals from the protection stages are routed to triggerthe disturbance recorder or alternatively only to be recorded by the disturbancerecorder depending on the parameter settings. Additionally, the selected



autorecloser, the ARC protection signals and the three binary inputs from X120 arealso connected, as well as the autorecloser external start command from the binaryinput 2 (X110:3-4).




A071358 V4 EN



TRPPTRC1 and 2 provide the lockout/latching function, event generation and thetrip signal duration setting. If the lockout operation mode is selected, one binary



input can be reassigned to the RST_LKOUT input of the Master Trip to enableexternal reset with a push button.

A071376 V4 EN













The circuit breaker closing is enabled when the ENA_CLOSE input is activated.The input can be activated by the configuration logic, which is a combination ofthe disconnector or breaker truck and earth switch position statuses and the statusesof the master trip logics and gas pressure alarm and circuit-breaker spring charging.This combination of interlocking conditions is called LOCAL_FEEDER_READYand is transferred also to the remote end via binary signal transfer. The OKPOSoutput from DCSXSWI defines if the disconnector or breaker truck is definitelyeither open/in test position or close/in service position. This, together with the openearth switch and non-active trip signals, activates the close-enable signal to thecircuit breaker control function block. The open operation is always enabled. Theauto-recloser close command signals are directly connected to the output contactPO1 (X100:6-7).


If the ENA_CLOSE and BLK_CLOSE signals are completelyremoved from the breaker control function block CBXCBR withPCM600, the function assumes that the breaker close commandsare allowed continuously.




A071378 V4 EN



• Start of any protection function SO1 (X100:10-12)• Operation (trip) of any protection function SO2 (X100:13-14)• Operation (trip) of any stage of the overcurrent protection function SO2

(X110:17-19)• Operation (trip) of any stage of the earth-fault protection function SO3

(X110:20-22)




3.7 Standard configuration E including directional earth-fault protection with phase-voltage measurement



3.7.2 FunctionsTable 18: Functions included in the REF615 standard configuration including directional earth-

fault protection with phase voltage measurement


PHLPTOC1 3I> 51P-1


PHHPTOC1 3I>> (1) 51P-2 (1)


PHHPTOC2 3I>> (2) 51P-2 (2)





50L/50NL (1)50L/50NL (2)50L/50NL (3)


DEFLPDEF1 I0> → (1) 67N-1 (1)


DEFLPDEF2 I0> → (2) 67N-1 (2)




EFHPTOC1 I0>> 51N-2


NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)






Function IEC 61850 IEC ANSIThree-phase thermal protection for feeders,cables and distribution transformers

T1PTTR1 3Ith> 49F





94/86 (1)94/86 (2)










Voltage sequence components measurement VSMSQI1 U1, U2, U0 U1, U2, U0

Power and energy measurement PEMMXU1 P, E P, E


Binary input Default usage Connector pinsX110-BI1 MCB open X110-1,2

X110-BI2Directional Earth Fault Protection's BasicAngle Control X110-3,4

X110-BI3 Circuit breaker low gas pressure alarm X110-5,6

X110-BI4 CB spring charged indication X110-7,6



X110-BI7 Earthing switch closed indication X110-11,12

X110-BI8 Earthing switch open indication X110-13,12

X120-BI1 Blocking of overcurrent instantaneous stage X120-1,2



X120-BI4 Lock-out reset X120-5,6

Binary output Default usage Connector pinsX100-PO1 Close circuit breaker X100-6,7

X100-PO2 Breaker failure backup trip to upstream breaker X100-8,9

X100-SO1 General Start indication X100-10,11,(12)

X100-SO2 General Operate indication X100-13,14




Binary output Default usage Connector pinsX100-PO3 Open Circuit Breaker/trip coil 1 X100-15-19

X100-PO4 Open Circuit Breaker/trip coil 2 X100-20-24

X110-SO1 Upstream Overcurrent Blocking X110-14,15

X110-SO2 Over current operate Alarm X110-17,18

X110-SO3 Earth fault operate Alarm X110-20,21

LED Default usage1 Non-directional overcurrent protection operated

2 Directional earth-fault protection operated

3 Non-directional earth-fault protection operated

4 Negative-sequence overcurrent or phase discontinuity protection operated

5 Thermal overload protection operated

6 Circuit-breaker failure protection backup protection operated

7 Disturbance recorder triggered

8 Circuit-breaker condition monitoring alarm

9 Supervision alarm

10 Arc fault detected

11 Autoreclose in progress











GUID-37D627C4-6097-4322-BACC-161CC6039EC5 V1 EN










ON 2




GUID-1F3C1F26-6F11-4250-9476-82C47C3AC570 V1 EN




The binary input 2 (X110:3-4) is intended for directional earth-fault protectionblocks’ relay characteristic angle (RCA: 0°/-90°) or operation mode (I0Sinφ/I0Cosφ) change. All operate signals are connected to the Master Trip and also tothe alarm LEDs. LED 2 is used for directional earth-fault and LED 3 for double earth-fault protection operate indication.



GUID-8BD4614B-2C4D-475E-ADC3-A376E213BF3C V1 EN






GUID-86A27183-AE21-4420-AA8D-B53A43C77BBE V1 EN











GUID-4BE45287-D708-41F3-851A-084A9AC3265E V1 EN




The disturbance recorder has 64 digital inputs, of which 35 are connected asdefault. All start and operate signals from the protection stages are routed either totrigger the disturbance recorder or to be recorded by the disturbance recorder,depending on the parameter settings. Additionally, the selected autorecloser, theARC protection signals and the three binary inputs from X120 are also connected.

GUID-48DD2A49-CF29-4088-914B-7AE1629E18CA V1 EN

Figure 50: Trip circuit supervision



The fuse failure supervision SEQRFUF1 detects failures in voltage measurementcircuits. Failures such as open miniature circuit breaker are detected and the alarmis connected to the alarm LED 9.

Failures in current measuring circuits are detected by CCRDIF. When a failure isdetected, blocking signal is activated in current protection functions which aremeasuring calculated sequence component currents, and unnecessary operation canbe avoided. The alarm signal is connected to the alarm LED 9.




GUID-4963C315-60C2-4C60-BE7F-B18D87A8D35E V1 EN






GUID-4DED2926-A92A-4F6A-BCAA-7D9CD24ACFC8 V1 EN











The circuit breaker closing is enabled when the ENA_CLOSE input is activated.The input can be activated by the configuration logic, which is a combination of



the disconnector or breaker truck and earth switch position statuses and the statusesof the master trip logics and gas pressure alarm and circuit-breaker spring charging.This combination of interlocking conditions is called LOCAL_FEEDER_READYand is transferred also to the remote end via binary signal transfer. The OKPOSoutput from DCSXSWI defines if the disconnector or breaker truck is definitelyeither open/in test position or close/in service position. This, together with the openearth switch and non-active trip signals, activates the close-enable signal to thecircuit breaker control function block. The open operation is always enabled. Theauto-recloser close command signals are directly connected to the output contactPO1 (X100:6-7).





GUID-572DA8CC-7A7D-4F9F-87C5-272A4283FB3E V1 EN






(X110:20-22)




3.8 Standard configuration F including directionalovercurrent protection with voltage protection

3.8.1 ApplicationsThe standard configuration is mainly intended for comprehensive protection andcontrol functionality of circuit breaker controlled asynchronous motors. Withminor modifications this standard configuration can be applied also for contactorcontrolled motors.


3.8.2 FunctionsTable 21: Functions included in the REF615 standard configuration including directional

overcurrent protection with voltage protection

Function IEC 61850 IEC ANSIThree-phase directional overcurrent protection,low stage, instance 1

DPHLPDOC1 3I> → (1) 67-1 (1)

Three-phase directional overcurrent protection,low stage, instance 2

DPHLPDOC2 3I> → (2) 67-1 (2)

Three-phase directional overcurrent protection,high stage

DPHHPDOC1 3I>> → 67-2





50L/50NL (1)50L/50NL (2)50L/50NL (3)


DEFLPDEF1 I0> → (1) 67N-1 (1)


DEFLPDEF2 I0> → (2) 67N-1 (2)




EFHPTOC1 I0>> 51N-2


NSPTOC1 I2> (1) 46 (1)


NSPTOC2 I2> (2) 46 (2)





Function IEC 61850 IEC ANSIThree-phase inrush detector INRPHAR1 3I2f> 68

Three-phase undervoltage protection PHTUV1PHTUV2PHTUV3

3U< (1)3U< (2)3U< (3)

27 (1)27 (2)27 (3)

Three-phase overvoltage protection PHTOV1PHTOV2PHTOV3

3U> (1)3U> (2)3U> (3)

59 (1)59 (2)59 (3)

Residual overvoltage protection ROVPTOV1ROVPTOV2ROVPTOV3

U0> (1)U0> (2)U0> (3)

59G (1)59G (2)59G (3)

Positive-sequence undervoltage protection PSPTUV U1< 47U+

Negative-sequence overvoltage protection NSPTOV U2> 47O-


T1PTTR1 3Ith> 49F





94/86 (1)94/86 (2)










Voltage sequence components measurement VSMSQI1 U1, U2, U0 U1, U2, U0

Power and energy measurement PEMMXU1 P, E P, E


Binary input Default usage Connector pinsX110-BI1 MCB open X110-1,2

X110-BI2Directional Earth Fault Protection's BasicAngle Control X110-3,4

X110-BI3 Circuit breaker low gas pressure indication X110-5,6

X110-BI4 CB spring charged indication X110-7,6



X110-BI7 Earthing switch closed indication X110-11,12

X110-BI8 Earthing switch open indication X110-13,12




Binary input Default usage Connector pinsX120-BI1 Blocking of overcurrent instantaneous stage X120-1,2



X120-BI4 Lock-out reset X120-5,6

Binary output Default usage Connector pinsX100-PO1 Close circuit breaker X100-6,7

X100-PO2 Breaker failure backup trip to upstream breaker X100-8,9

X100-SO1 General Start indication X100-10,11,(12)

X100-SO2 General Operate indication X100-13,14



X110-SO1 Upstream Overcurrent Blocking X110-14,15

X110-SO2 Over current operate Alarm X110-17,18

X110-SO3 Earth fault operate Alarm X110-20,21

X110-SO4 Voltage protection operate Alarm X110-23,24

LED Default usage1 Overcurrent protection operated

2 Earth-fault protection operated

3 Voltage protection operated

4 Negative-sequence overcurrent or phase discontinuity protection operated

5 Thermal overload protection operated

6 Circuit-breaker failure protection backup protection operated

7 Disturbance recorder triggered

8 Circuit-breaker condition monitoring alarm

9 Supervision alarm

10 Arc fault detected

11 Autoreclose in progress



The analog channels have fixed connections towards the different function blocksinside the IED’s standard configuration. Exceptions from this rule are the 12analog channels available for the disturbance recorder function. These channels are



freely selectable and a part of the disturbance recorder’s parameter settings, thusnot included in the PCM600 functionality.

The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with 3I represents the three phase currentsand 3U the three phase voltages. The signal marked with I0 represents themeasured residual current via a core balance current transformer. The signalmarked with U0 represents the measured residual voltage via open delta connectedvoltage transformers.




Four overcurrent stages are available for overcurrent and short-circuit protection.Three of them include directional functionality (DPHxPDOC). The non-directionalinstantaneous stage (PHIPTOC1) can be blocked by energizing the binary input 1(X120:1-2). Two negative-sequence overcurrent stages (NSPTOC1 andNSPTOC2) are available for phase unbalance protection. The inrush detectionblock’s (INRPHAR1) output BLK2H enables either blocking the function ormultiplying the active settings for any of the shown protection function blocks.



GUID-F0BE506C-0A96-4AA2-AC55-FFD9BCD23951 V1 EN

Figure 54: Directional overcurrent protection







ON 2




GUID-F82FE8A6-6AA1-44D9-8FE2-8B2C51CEA7AA V1 EN




The binary input 2 (X110:3-4) is intended for directional earth-fault protectionblocks’ relay characteristic angle (RCA: 0°/-90°) or operation mode (I0Sinφ/I0Cosφ) change. All operate signals are connected to the Master Trip and also tothe alarm LED 2.



GUID-5F0B30AD-0B3F-4B6D-BFAC-7209FA9DAACD V1 EN






GUID-EC907A8E-9CF0-4150-A394-FFBAF30A8725 V1 EN










GUID-BCEB1C2E-BC64-4E79-8329-A5D9FCD7AB2F V1 EN

Figure 58: Overvoltage and undervoltage protection

Three overvoltage and undervoltage protection stages (PHxPTOV and PHxPTUV)offer protection against abnormal phase voltage conditions. The operation ofvoltage functions is connected to alarm LED 3. A failure in the voltage measuringcircuit is detected by the fuse failure function and the activation is connected toundervoltage protection functions to avoid faulty undervoltage tripping.



GUID-A77D0608-E3F2-4D3D-8907-15034FC42D51 V1 EN

Figure 59: Positive-sequence undervoltage and negative-sequenceovervoltage protection

Positive-sequence undervoltage (PSPTUV) and negative-sequence overvoltage(NSPTOV) protection functions enable voltage-based unbalance protection. Theoperation signals of voltage-sequence functions are connected to alarm LED 3,which is a combined voltage protection alarm led.

GUID-54404411-CD8E-4277-A0A1-80B31CBD45EC V1 EN

Figure 60: Residual overvoltage protection

The residual overvoltage protection (ROVPTOV) provides earth-fault protectionby detecting abnormal level of residual voltage. It can be used, for example, as a non-selective backup protection for the selective directional earth-fault functionality.The operation signal is connected to alarm LED 2.




GUID-A2EBA677-AEF4-451B-807B-20F50D5894C7 V1 EN


The disturbance recorder has 64 digital inputs, of which 35 are connected asdefault. All start and operate signals from the protection stages are routed either totrigger the disturbance recorder or to be recorded by the disturbance recorder,depending on the parameter settings. Additionally, the selected autorecloser, theARC protection signals and the three binary inputs from X120 are also connected.



GUID-F06A3FEF-2C72-49A4-928F-D301335EC2C6 V1 EN

Figure 62: Trip circuit supervision



The fuse failure supervision SEQRFUF1 detects failures in voltage measurementcircuits. Failures such as open miniature circuit breaker are detected and the alarmis connected to the alarm LED 9.

Failures in current measuring circuits are detected by CCRDIF. When a failure isdetected, blocking signal is activated in current protection functions which aremeasuring calculated sequence component currents, and unnecessary operation canbe avoided. The alarm signal is connected to the alarm LED 9.




GUID-300441A3-AE3C-4BBF-8C5A-B5CA8BA4EF53 V1 EN






GUID-DE498CFB-A256-4275-9A1F-5EF3B09046F4 V1 EN











The circuit breaker closing is enabled when the ENA_CLOSE input is activated.The input can be activated by the configuration logic, which is a combination of



the disconnector or breaker truck and earth switch position statuses and the statusesof the master trip logics and gas pressure alarm and circuit-breaker spring charging.This combination of interlocking conditions is called LOCAL_FEEDER_READYand is transferred also to the remote end via binary signal transfer. The OKPOSoutput from DCSXSWI defines if the disconnector or breaker truck is definitelyeither open/in test position or close/in service position. This, together with the openearth switch and non-active trip signals, activates the close-enable signal to thecircuit breaker control function block. The open operation is always enabled. Theauto-recloser close command signals are directly connected to the output contactPO1 (X100:6-7).





GUID-79EB68EE-F160-402E-A841-BC6D074E7294 V1 EN








(X110:20-22)

TPGAPC 1...3 are timers used for setting the minimum pulse length for theoutputs. Four generic timers (TPGAPC1..4) are available in the IED. Theremaining one not described in the functional diagram is available in PCM600 forconnection where applicable.



Section 4 Requirements for measurementtransformers

4.1 Current transformers

4.1.1 Current transformer requirements for non-directionalovercurrent protectionFor reliable and correct operation of the overcurrent protection, the CT has to bechosen carefully. The distortion of the secondary current of a saturated CT mayendanger the operation, selectivity, and co-ordination of protection. However,when the CT is correctly selected, a fast and reliable short circuit protection can beenabled.

The selection of a CT depends not only on the CT specifications but also on thenetwork fault current magnitude, desired protection objectives, and the actual CTburden. The protection relay settings should be defined in accordance with the CTperformance as well as other factors.

4.1.1.1 Current transformer accuracy class and accuracy limit factor

The rated accuracy limit factor (Fn) is the ratio of the rated accuracy limit primarycurrent to the rated primary current. For example, a protective current transformerof type 5P10 has the accuracy class 5P and the accuracy limit factor 10. Forprotective current transformers, the accuracy class is designed by the highestpermissible percentage composite error at the rated accuracy limit primary currentprescribed for the accuracy class concerned, followed by the letter "P" (meaningprotection).

Table 24: Limits of errors according to IEC 60044-1 for protective current transformers

Accuracy class Current error atrated primarycurrent (%)

Phase displacement at rated primarycurrent

Composite error atrated accuracy limitprimary current (%)minutes centiradians

5P ±1 ±60 ±1.8 5

10P ±3 - - 10

The accuracy classes 5P and 10P are both suitable for non-directional overcurrentprotection. The 5P class provides a better accuracy. This should be noted also ifthere are accuracy requirements for the metering functions (current metering,power metering, and so on) of the relay.

1MRS756378 E Section 4Requirements for measurement transformers


The CT accuracy primary limit current describes the highest fault currentmagnitude at which the CT fulfils the specified accuracy. Beyond this level, thesecondary current of the CT is distorted and it might have severe effects on theperformance of the protection relay.

In practise, the actual accuracy limit factor (Fa) differs from the rated accuracylimit factor (Fn) and is proportional to the ratio of the rated CT burden and theactual CT burden.

The actual accuracy limit factor is calculated using the formula:

F FS S

S Sa n

in n

in

≈ ×

+

+

A071141 V1 EN

Fn the accuracy limit factor with the nominal external burden Sn

Sin the internal secondary burden of the CT

S the actual external burden

4.1.1.2 Non-directional overcurrent protection

The current transformer selectionNon-directional overcurrent protection does not set high requirements on theaccuracy class or on the actual accuracy limit factor (Fa) of the CTs. It is, however,recommended to select a CT with Fa of at least 20.

The nominal primary current I1n should be chosen in such a way that the thermaland dynamic strength of the current measuring input of the relay is not exceeded.This is always fulfilled when

I1n > Ikmax / 100,

Ikmax is the highest fault current.

The saturation of the CT protects the measuring circuit and the current input of therelay. For that reason, in practice, even a few times smaller nominal primarycurrent can be used than given by the formula.

Recommended start current settingsIf Ikmin is the lowest primary current at which the highest set overcurrent stage ofthe relay is to operate, then the start current should be set using the formula:

Current start value < 0.7 x (Ikmin / I1n)

I1n is the nominal primary current of the CT.

Section 4 1MRS756378 ERequirements for measurement transformers


The factor 0.7 takes into account the protection relay inaccuracy, currenttransformer errors, and imperfections of the short circuit calculations.

The adequate performance of the CT should be checked when the setting of thehigh set stage O/C protection is defined. The operate time delay caused by the CTsaturation is typically small enough when the relay setting is noticeably lower thanFa.

When defining the setting values for the low set stages, the saturation of the CTdoes not need to be taken into account and the start current setting is simplyaccording to the formula.

Delay in operation caused by saturation of current transformersThe saturation of CT may cause a delayed relay operation. To ensure the timeselectivity, the delay must be taken into account when setting the operate times ofsuccessive relays.

With definite time mode of operation, the saturation of CT may cause a delay thatis as long as the time the constant of the DC component of the fault current, whenthe current is only slightly higher than the starting current. This depends on theaccuracy limit factor of the CT, on the remanence flux of the core of the CT, andon the operate time setting.

With inverse time mode of operation, the delay should always be considered asbeing as long as the time constant of the DC component.

With inverse time mode of operation and when the high-set stages are not used, theAC component of the fault current should not saturate the CT less than 20 times thestarting current. Otherwise, the inverse operation time can be further prolonged.Therefore, the accuracy limit factor Fa should be chosen using the formula:

Fa > 20*Current start value / I1n

The Current start value is the primary pickup current setting of the relay.

4.1.1.3 Example for non-directional overcurrent protection

The following figure describes a typical medium voltage feeder. The protection isimplemented as three-stage definite time non-directional overcurrent protection.

1MRS756378 E Section 4Requirements for measurement transformers


A071142 V1 EN

Figure 66: Example of three-stage overcurrent protection

The maximum three-phase fault current is 41.7 kA and the minimum three-phaseshort circuit current is 22.8 kA. The actual accuracy limit factor of the CT iscalculated to be 59.

The start current setting for low-set stage (3I>) is selected to be about twice thenominal current of the cable. The operate time is selected so that it is selective withthe next relay (not visible in the figure above). The settings for the high-set stageand instantaneous stage are defined also so that grading is ensured with thedownstream protection. In addition, the start current settings have to be defined sothat the relay operates with the minimum fault current and it does not operate withthe maximum load current. The settings for all three stages are as in the figure above.

For the application point of view, the suitable setting for instantaneous stage (I>>>)in this example is 3 500 A (5.83 x I2n). For the CT characteristics point of view, thecriteria given by the current transformer selection formula is fulfilled and also therelay setting is considerably below the Fa. In this application, the CT rated burdencould have been selected much lower than 10 VA for economical reasons.

Section 4 1MRS756378 ERequirements for measurement transformers


Section 5 IED physical connections

5.1 Inputs

5.1.1 Energizing inputs

5.1.1.1 Phase currents

The IED can also be used in single or two-phase applications byleaving one or two energizing inputs unoccupied. However, at leastterminals X120/7-8 must be connected.

Table 25: Inputs for phase currents

Terminal DescriptionX120-7, 8 IL1

X120-9, 10 IL2

X120-11, 12 IL3

5.1.1.2 Residual current

Table 26: Inputs for residual current

Terminal DescriptionX120-13, 14 I0

5.1.1.3 Phase voltages

Table 27: Phase voltage input included in configurations E and F

Terminal DescriptionX130-11, 12 U1

X130-13, 14 U2

X130-15, 16 U3

1MRS756378 E Section 5IED physical connections


5.1.1.4 Residual voltage

Table 28: Additional residual voltage input included in configurations A and B


Table 29: Additional residual voltage input included in configurations E and F


5.1.2 Auxiliary supply voltage inputThe auxiliary voltage of the IED is connected to terminals X100/1-2. At DCsupply, the positive lead is connected to terminal X100-1. The permitted auxiliaryvoltage range (AC/DC or DC) is marked on the top of the LHMI of the IED.

Table 30: Auxiliary voltage supply

Terminal DescriptionX100-1 + Input

X100-2 - Input

5.1.3 Binary inputsThe binary inputs can be used, for example, to generate a blocking signal, tounlatch output contacts, to trigger the disturbance recorder or for remote control ofIED settings.

Terminals X120/1-4 are binary input terminals. In the IED variants C and D, thereare additional binary inputs X120/5-6 included. In the IED variants B and D, anadditional BIOB01A-module is included in slot X110. Optional BIO-moduleBIOB02A for slot X130 can be included at the time of order.

Table 31: Binary input terminals X110-1...13 included in configurations B and D

Terminal DescriptionX110-1 BI1, +

X110-2 BI1, -

X110-3 BI2, +

X110-4 BI2, -

X110-5 BI3, +

X110-6 BI3, -

X110-6 BI4, -

X110-7 BI4, +


Section 5 1MRS756378 EIED physical connections



X110-9 BI5, -

X110-9 BI6, -

X110-10 BI6, +

X110-11 BI7, +

X110-12 BI7, -

X110-12 BI8, -

X110-13 BI8, +

Table 32: Binary input terminals X120-1...6


X120-2 BI1, -

X120-3 BI2, +

X120-2 BI2, -

X120-4 BI3, +

X120-2 BI3, -

X120-5 BI4, +

X120-6 BI4, -

Table 33: Binary input terminals X130-1...9, optional for configurations B and D


X130-2 BI1, -

X130-2 BI2, -

X130-3 BI2, +

X130-4 BI3, +

X130-5 BI3, -

X130-5 BI4, -

X130-6 BI4, +

X130-7 BI5, +

X130-8 BI5, -

X130-8 BI6, -

X130-9 BI6, +



5.1.4 Optional light sensor inputsIf the IED is provided with the optional communication module with light sensorinputs, the pre-manufactured lens-sensor fibres are connected to inputs X13, X14and X15, see the terminal diagrams.For further information, see arc protection.

The IED is provided with connection sockets X13, X14 and X15only if the optional communication module with light sensor inputshas been installed. If the arc protection option is selected whenordering an IED, the light sensor inputs are included in thecommunication module.

Table 34: Light sensor input connectors

Terminal DescriptionX13 Input Light sensor 1

X14 Input Light sensor 2

X15 Input Light sensor 3

5.2 Outputs

5.2.1 Outputs for tripping and controllingOutput contacts PO1, PO2, PO3 and PO4 are heavy-duty trip contacts capable ofcontrolling most circuit breakers. On delivery from the factory, the trip signalsfrom all the protection stages are routed to PO3 and PO4.

Table 35: Output contacts

Terminal DescriptionX100-6 PO1, NO

X100-7 PO1, NO

X100-8 PO2, NO

X100-9 PO2, NO

X100-15 PO3, NO (TCS resistor)

X100-16 PO3, NO

X100-17 PO3, NO

X100-18 PO3 (TCS1 input), NO


X100-20 PO4, NO (TCS resistor)

X100-21 PO4, NO

X100-22 PO4, NO





5.2.2 Outputs for signallingOutput contacts SO1 and SO2 in slot X100 or SO1, SO2, SO3 and SO4 in slotX110 or SO1, SO2 and SO3 in slot X130 (optional) can be used for signalling onstart and tripping of the IED. On delivery from the factory, the start and alarmsignals from all the protection stages are routed to signalling outputs.

Output contacts of slot X110 are available only with configurations B and D.Output contacts of slot X130 are available in the optional BIO module (BIOB02A).

Table 36: Output contacts X100-10...14

Terminal DescriptionX100-10 SO1, common

X100-11 SO1, NC

X100-12 SO1, NO

X100-13 SO2, NO

X100-14 SO2, NO



X110-15 SO1, NO

X110-16 SO1, NC

X110-17 SO2, common

X110-18 SO2, NO

X110-19 SO2, NC

X110-20 SO3, common

X110-21 SO3, NO

X110-22 SO3, NC

X110-23 SO4, common

X110-24 SO4, NO



X130-11 SO1, NO

X130-12 SO1, NC

X130-13 SO2, common

X130-14 SO2, NO

X130-15 SO2, NC

X130-16 SO3, common

X130-17 SO3, NO

X130-18 SO3, NC



5.2.3 IRFThe IRF contact functions as an output contact for the self-supervision system ofthe protection IED. Under normal operating conditions, the IED is energized andthe contact is closed (X100/3-5). When a fault is detected by the self-supervisionsystem or the auxiliary voltage is disconnected, the output contact drops off and thecontact closes (X100/3-4).

Table 39: IRF contact

Terminal DescriptionX100-3 IRF, common

X100-4 Closed; IRF, or Uaux disconnected

X100-5 Closed; no IRF, and Uaux connected



Section 6 Glossary

100BASE-FX A physical media defined in the IEEE 802.3 Ethernetstandard for local area networks (LANs) that uses fibre-optic cabling

100BASE-TX A physical media defined in the IEEE 802.3 Ethernetstandard for local area networks (LANs) that uses twisted-pair cabling category 5 or higher with RJ-45 connectors

ANSI American National Standards InstituteASCII American Standard Code for Information InterchangeBI Binary inputBI/O Binary input/outputBO Binary outputCB Circuit breakerCT Current transformerDNP3 A distributed network protocol originally developed by

Westronic. The DNP3 Users Group has the ownershipof the protocol and assumes responsibility for its evolution.

EMC Electromagnetic compatibilityGOOSE Generic Object Oriented Substation EventHMI Human-machine interfaceHW HardwareIEC International Electrotechnical CommissionIEC 60870-5-103 Communication standard for protective equipment; A

serial master/slave protocol for point-to-pointcommunication

IEC 61850 International standard for substation communication andmodelling

IED Intelligent electronic deviceIP address A set of four numbers between 0 and 255, separated by

periods. Each server connected to the Internet isassigned a unique IP address that specifies the locationfor the TCP/IP protocol.

IRIG-B Inter-Range Instrumentation Group's time code format BLAN Local area networkLC Connector type for glass fibre cable

1MRS756378 E Section 6Glossary


LCD Liquid crystal displayLED Light-emitting diodeLHMI Local human-machine interfaceModbus A serial communication protocol developed by the

Modicon company in 1979. Originally used forcommunication in PLCs and RTU devices.

Modbus TCP/IP Modbus RTU protocol which uses TCP/IP and Ethernetto carry data between devices

MV Medium voltagePCM600 Protection and Control IED ManagerPO Power outputRCA Also known as MTA or base angle. Characteristic angle.RJ-45 Galvanic connector typeRS-232 Serial interface standardRS-485 Serial link according to EIA standard RS485RTU Remote terminal unitSO Signal outputTCP/IP Transmission Control Protocol/Internet ProtocolTCS Trip-circuit supervisionWAN Wide area networkWHMI Web human-machine interface

Section 6 1MRS756378 EGlossary


Contact us

ABB OyDistribution AutomationP.O. Box 699FI-65101 VAASA, FinlandPhone +358 10 22 11Fax +358 10 22 41094

www.abb.com/substationautomation

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