RET615 Transformer Protection and Control ANSI ...Section 2RET615 overview 2.1 OverviewRET615 is a dedicatedtransformer protection and control IED (intelligent electronic device) for

Relion® 615 series

Transformer Protection and ControlRET615 ANSIApplication Manual

Document ID: 1MAC201230-MBIssued: 01/20/2010

Revision: AProduct version: 2.0

© Copyright 2010 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 third party,nor used for any unauthorized purpose.

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

TrademarksABB and Relion are registered trademarks of ABB Group. All other brand or productnames mentioned in this document may be trademarks or registered trademarks of theirrespective holders.

WarrantyPlease inquire about the terms of warranty from your nearest ABB representative.

ABB Inc.

Distribution Automation

4300 Coral Ridge Drive

Coral Springs, FL 33065, USA

Toll-free: 1 (800) 523-2620

Phone: +1 954-752-6700

Fax: +1 954 345-5329

http://www.abb.com/substationautomation

HTTP://WWW.ABB.COM/SUBSTATIONAUTOMATION

DisclaimerThe data, examples and diagrams in this manual are included solely for the concept orproduct description and are not to be deemed as a statement of guaranteed properties.All persons responsible for applying the equipment addressed in this manual mustsatisfy themselves that each intended application is suitable and acceptable, includingthat any applicable safety or other operational requirements are complied with. Inparticular, any risks in applications where a system failure and/or product failure wouldcreate a risk for harm to property or persons (including but not limited to personalinjuries or death) shall be the sole responsibility of the person or entity applying theequipment, and those so responsible are hereby requested to ensure that all measuresare 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 requested tonotify the manufacturer. Other than under explicit contractual commitments, in noevent shall ABB be responsible or liable for any loss or damage resulting from the useof this manual or the application of the equipment.

ConformityThis product complies with the directive of the Council of the European Communitieson the approximation of the laws of the Member States relating to electromagneticcompatibility (EMC Directive 2004/108/EC) and concerning electrical equipment foruse within specified voltage limits (Low-voltage directive 2006/95/EC). Thisconformity is the result of tests conducted by ABB in accordance with the productstandards EN 50263 and EN 60255-26 for the EMC directive, and with the productstandards EN 60255-6 and EN 60255-27 for the low voltage directive. The IED isdesigned in accordance with the international standards of the IEC 60255 series andANSI C37.90.

Table of contents

Section 1 Introduction............................................................................3This manual..............................................................................................3Intended audience....................................................................................3Product documentation.............................................................................4

Product documentation set..................................................................4Document revision history...................................................................5Related documentation........................................................................6

Symbols and conventions.........................................................................6Safety indication symbols....................................................................6Manual conventions.............................................................................7Functions, codes and symbols............................................................7

Section 2 RET615 overview................................................................11Overview.................................................................................................11

Product version history......................................................................11PCM600 and IED connectivity package version................................11

Operation functionality............................................................................12Optional features...............................................................................12

Physical hardware..................................................................................12Local HMI................................................................................................14

LCD....................................................................................................15LEDs..................................................................................................15Keypad..............................................................................................16

Web HMI.................................................................................................16Authorization...........................................................................................17Communication.......................................................................................18

Section 3 RET615 variants..................................................................21RET615 variant list.................................................................................21Presentation of standard configurations.................................................21

Standard configurations.....................................................................22Connection diagrams ........................................................................25

Standard configuration TA01: Current inputs only..................................27Applications.......................................................................................27Functions...........................................................................................27

Default I/O connections................................................................29

Table of contents

RET615 ANSI 1Application Manual

Functional diagrams..........................................................................30Functional diagrams for protection...............................................31Functional diagrams for digital fault recorder and trip circuitmonitoring.....................................................................................36Functional diagrams for control and interlocking..........................39Functional diagram for optional ARC flash detection...................43

Standard configuration TA02: Current and voltage inputs......................45Applications.......................................................................................45Functions...........................................................................................45

Default I/O connections................................................................47Functional diagrams..........................................................................48

Functional diagrams for protection...............................................49Functional diagrams for digital fault recorder and trip circuitmonitoring.....................................................................................55Functional diagrams for control and interlocking..........................58Functional diagram for voltage protections...................................62Functional diagram for optional ARC flash detection...................63

Section 4 Requirements for measurement transformers.....................65Current transformers...............................................................................65

Current transformer requirements for non-directionalovercurrent protection........................................................................65

Current transformer accuracy class and accuracy limitfactor.............................................................................................65Non-directional overcurrent protection.........................................66Example for non-directional overcurrent protection......................68

Section 5 IED physical connections....................................................69Inputs......................................................................................................69

Energizing inputs...............................................................................69Phase currents.............................................................................69Ground current.............................................................................69

Auxiliary supply voltage input............................................................69Binary inputs......................................................................................70Optional light sensor inputs...............................................................71

Outputs...................................................................................................71Outputs for tripping and controlling....................................................71Outputs for signalling.........................................................................72IRF.....................................................................................................73

Section 6 Glossary..............................................................................75

Table of contents

2 RET615 ANSIApplication Manual

Section 1 Introduction

1.1 This manual

The application manual contains application descriptions and setting guidelines sortedper function. The manual can be used to find out when and for what purpose a typicalprotection function can be used. The manual can also be used when calculating settings.

1.2 Intended audience

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

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

1MAC201230-MB A 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

The engineering manual contains instructions on how to engineer the IEDs using thedifferent tools in PCM600. The manual provides instructions on how to set up aPCM600 project and insert IEDs to the project structure. The manual also recommendsa sequence for engineering of protection and control functions, LHMI functions as wellas communication engineering for IEC 61850 and DNP3.

The 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.

The commissioning manual contains instructions on how to commission the IED. Themanual can also be used by system engineers and maintenance personnel for assistance

Section 1 1MAC201230-MB AIntroduction


during the testing phase. The manual provides procedures for checking of externalcircuitry and energizing the IED, parameter setting and configuration as well asverifying settings by secondary injection. The manual describes the process of testingan IED in a substation which is not in service. The chapters are organized inchronological order in which the IED should be commissioned.

The 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 power grid data to determine the cause of a fault.

The service manual contains instructions on how to service and maintain the IED. Themanual also provides procedures for de-energizing, de-commissioning and disposal ofthe IED.

The application manual contains application descriptions and setting guidelines sortedper function. The manual can be used to find out when and for what purpose a typicalprotection function can be used. The manual can also be used when calculating settings.

The 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 during normalservice.

The communication protocol manual describes a communication protocol supported bythe IED. The manual concentrates on vendor-specific implementations.

The 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 series version HistoryA/01/20/2010 2.0 First release

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 1MAC052634-MB

DNP3 Communication Protocol Manual 1MAC052460-MB

IEC 61850 Engineering Guide 1MAC106231-MB

Installation Manual 1MAC051065-MB

Operation Manual 1MAC050592-MB

Technical Manual 1MAC050144-MB

1.4 Symbols and conventions

1.4.1 Safety indication symbols

The electrical warning icon indicates the presence of a hazard whichcould result in electrical shock.

The warning icon indicates the presence of a hazard which could resultin personal injury.

The caution icon indicates important information or warning related tothe concept discussed in the text. It might indicate the presence of ahazard which could result in corruption of software or damage toequipment or property.

The information icon alerts the reader to important facts and conditions.

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 understood thatoperation of damaged equipment could, under certain operational conditions, result in



degraded process performance leading to personal injury or death. Therefore, complyfully with all warning and caution notices.

1.4.2 Manual conventionsConventions used in IED manuals. A particular convention may not be used in thismanual.

• Abbreviations and acronyms in this manual are spelled out in the glossary. Theglossary also contains definitions of important terms.

• Push button navigation in the LHMI menu structure is presented by using the pushbutton icons, for example:To navigate between the options, use and .

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

• 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 "Enabled" and "Disabled".

• IED input/output messages and monitored data names are shown in Courier font,for example:When the function picks up, the PICKUP output is set to TRUE.

• Dimensions are provided both in inches and mm. If it is not specifically mentionedthen the dimension is in mm.

1.4.3 Functions, codes and symbolsTable 1: Functions included in the RET615 standard configuration

Function IEC 61850 IEC 60617 ANSIProtection

Three-phase non-directional time overcurrentprotection, low stage, high-voltage side

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

Three-phase non-directional time overcurrentprotection, high stage 1, high-voltage side

PHHPTOC1 3I>>(1) 50P (1)

Three-phase non-directional time overcurrentprotection, low stage, low-voltage side

PHLPTOC2 3I>(2) 51P (2)

Three-phase non-directional time overcurrentprotection, high stage 1, low-voltage side

PHHPTOC3 3I>>(3) 50P (2)

Ground non-directional time overcurrent protection,low stage (Calculated), high-voltage side

EFLPTOC2 I0>(2) 51N (1)

Table continues on next page



Function IEC 61850 IEC 60617 ANSIGround non-directional time overcurrent protection,high stage 1 (Calculated), high-voltage side

EFHPTOC3 I0>> (3) 50N (1)

Ground non-directional time overcurrent protection,high stage 1 (Calculated), low-voltage side

EFHPTOC5 I0>> (5) 50N (2)

Three-phase thermal overload protection, two timeconstants, high-voltage side

T2PTTR1 3Ith>T 49T (1)

Loss of load protection, high-voltage side LOFLPTUC1 3I< 37 (1)

Circuit breaker failure protection, low-voltage side CCBRBRF1 3I>/IoBF(1) 50BF (2)

Low impedance restricted ground fault protection,low-voltage side

LREFPNDF1 dIoLo> 87LOZREF (2)

Transformer differential protection for two windingtransformers

TR2PTDF1 3dI>T 87T

Three-phase overvoltage protection, stage 1, low-voltage side

PHPTOV1 3U>(1) 59 (2)

Three-phase undervoltage protection, stage 1, low-voltage side

PHPTUV1 3U<(1) 27 (2)

Ground overvoltage protection, low-voltage side ROVPTOV1 U0>(1) 59G (2)

Negative sequence overvoltage protection, low-voltage side

NSPTOV1 U2> 47 (2)

Directional ground-fault protection, low stage, low-voltage side

DEFLPDEF1 I0>->(1) 67/51N (2)

Three-phase directional overcurrent protection, lowstage, low-voltage side

DPHLPDOC1 3I>->(1) 67/51P (2)

Ground non-directional time overcurrent protection,low stage (Measured)

EFLPTOC1 I0>(1) 51G

Ground non-directional time overcurrent protection,high stage 1 (Measured)

EFHPTOC1 I0>> (1) 50G

Ground non-directional time overcurrent protection,low stage (Calculated), low-voltage side

EFLPTOC3 I0>(3) 51N (2)

Arc flash detector 1, low-voltage side ARCSARC1 ARC(1) AFD-1 (2)



Control

Circuit breaker control, low-voltage side CBXCBR1 I<->O CB 52 (2)

Supervision and monitoring

Circuit breaker condition monitoring, low-voltage side SSCBR1 CBCM 52CM (2)

Trip circuit monitoring 1 TCSSCBR1 TCS(1) TCM-1


Fuse failure supervision, low-voltage side SEQRFUF1 FUSEF 60 (2)

Measurement

Three-phase current measurement, high-voltageside

CMMXU1 3I IA,IB,IC (1)




Function IEC 61850 IEC 60617 ANSIThree-phase current measurement, low-voltage side CMMXU2 3I(B) IA,IB,IC (2)

Three-phase voltage measurement, low-voltage side VMMXU1 3U VA,VB,VC (2)

Sequence current measurement , high-voltage side CSMSQI1 I1,I2,I0 I1, I2, I0 (1)

Sequence current measurement , low-voltage side CSMSQI2 I1,I2,I0(B) I1, I2, I0 (2)

Sequence voltage measurement, low-voltage side VSMSQI1 U1,U2,U0 V1,V2,V0 (2)

Three-phase power and energy measurement, low-voltage side

PEMMXU1 P,E P,E (2)

Ground current measurement RESCMMXU1 I0 IG

Ground voltage measurement RESVMMXU1 U0 VG

Tap position TPOSSLTC1 TPOSM 84T

Digital fault recorder RDRE1 DR DFR

Sequence of events recorder SER SER SER

Fault recorder FLTMSTA FR FLR

Electrically latched/self resetting trip output 1 TRPPTRC1 Trip(1) 86/94-1




10

Section 2 RET615 overview

2.1 Overview

RET615 is a dedicated transformer protection and control IED (intelligent electronicdevice) for power transformers, unit and step-up transformers including power generator-transformer blocks in utility and industry power distribution systems. RET615 is amember of ABB’s Relion® product family and part of its 615 protection and controlproduct series. The 615 series IEDs are characterized by their compactness andwithdrawable design.

Re-engineered from the ground up, the 615 series has been designed to unleash the fullpotential of the IEC 61850 standard for communication and interoperability betweensubstation automation devices. Once the standard configuration IED has been given theapplication-specific settings, it can directly be put into service.

The 615 series IEDs support a range of communication protocols including IEC 61850with GOOSE messaging, Modbus® and DNP3.

2.1.1 Product version historyProduct version Product history2.0 Product released

2.1.2 PCM600 and IED connectivity package version• Protection and Control IED Manager PCM600 Ver. 2.0 SP2 or later• IED Connectivity Package RET615 ANSI Ver. 1.0 or later

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

1MAC201230-MB A Section 2RET615 overview


• IED User Management• Differential Characteristics Tool• IED Users

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

2.2 Operation functionality

2.2.1 Optional features• Arc flash detector with three sensors

• Optional arc flash detectors can be added to all standard configurations.• Additional BIOs: 7BI+3BO

• Optional BIO (7 BI + 3 BO) can be added to all standard configurations.• Autorecloser

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.

Table 2: Plug-in unit and case

Main unit Slot ID Content optionsPlug-inunit

- HMI Large (8 lines, 16 characters)

X100 Auxiliary power/BO module 48-250 V DC/100-240 V AC; or 24-60 V DC2 normally-open PO contacts1 change-over SO contact1 normally-open SO contact2 double-pole PO contacts with TCS1 dedicated internal fault output contact

X110 BIO module 8 binary inputs4 signal output contacts

X120 AI/BI module 6 phase current inputs (1/5A)1 residual current input (1/5A)


Section 2 1MAC201230-MB ARET615 overview




Main unit Slot ID Content optionsCase X130 Optional BIO module With configuration TA01

6 binary inputs3 signal output contacts

AI/BI module With configuration TA023 phase voltage inputs (100, 110, 115 or 120 V)1 residual voltage input (100, 110, 115 or 120 V)4 binary inputs

X000 Optional communicationmodule

See the technical manual for details about differenttypes of communication modules.

The rated input levels are selected in the IED software for phase current and groundcurrent. The binary input thresholds 18...176 V DC are selected by adjusting the IED'sparameter settings.

The optional BIO module can be added in the IED to all standardconfigurations.

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

See the installation manual for more information about the case and theplug-in unit.

Table 3: Number of physical connections in standard configurations

Conf. Analog channels Binary channels CT VT BI BO

TA01 7 0 8 or 14 10 or 13

TA02 7 4 12 10



2.4 Local HMI

A070704-ANSI V1 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. The charactersize depends on the selected language.

Table 4: Characters and rows on the view

Character size Rows in view Characters on rowLarge, 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-ANSI 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: Normal, Pickup andTrip.

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



There are two additional LEDs which are embedded into the control buttons and. They represent the status of the circuit breaker.

2.4.3 KeypadThe LHMI keypad contains push-buttons which are used to navigate in different viewsor menus. With the push-buttons you can give open or close commands to one primaryobject, for example, a circuit breaker, disconnector or switch. The push-buttons arealso used to acknowledge alarms, reset indications, provide help and switch betweenlocal and remote control mode.

A071176-ANSI 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 supported webbrowser version is Internet Explorer 7.0 or later.

WHMI is enabled by default.

WHMI offers several functions.

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



• Measurement display• Oscillographic records• Phasor diagram

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

A070754-ANSI V1 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 DFRs• Changing system settings such as IP address, serial baud rate or

DFR 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 different communication protocols: IEC 61850, Modbus® and DNP3.0 Level 2 - all using TCP/IP. DNP3 and Modbus also support serial communication.Operational information and controls are available through these protocols.

The IEC 61850 communication implementation supports all monitoring and controlfunctions. Additionally, parameter setting and DFR records can be accessed using theIEC 61850 protocol. Oscillographic files are available to any Ethernet-basedapplication in the standard COMTRADE format. Further, the IED can send andreceive binary signals from other IEDs (so called horizontal communication) using theIEC61850-8-1 GOOSE profile, where the highest performance class with a totaltransmission time of 3 ms is supported. The IED meets the GOOSE performancerequirements for tripping applications in distribution substations, as defined by the IEC61850 standard. The IED can simultaneously report events to five different clients onthe station bus.

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 fiber-optic LC connector (100BASE-FX).



20

Section 3 RET615 variants

3.1 RET615 variant list

3.2 Presentation of standard configurations

Functional diagramsThe functional diagrams describe the IED's functionality from the protection,measuring, condition monitoring, recording, control and interlocking perspective.Diagrams show the default functionality with simple symbol logics forming principlediagrams. The external connections to primary devices are also shown, stating thedefault connections to measuring transformers. The positive measuring direction istowards the outgoing feeder, away from the bus bar.

The functional diagrams are divided into sections with each section constituting 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 identified basedon their ANSI function number/acronym, but the IEC based symbol and the IEC 61850names are also included. Some function blocks are used several times in theconfiguration. To separate the blocks from each other, the IEC 61850 name and ANSIfunction number are appended with a running number, that is an instance number, fromone upwards. The IED’s internal functionality and the external connections areseparated with a dashed line presenting the IED’s physical casing.

Signal MatrixWith Signal Matrix in PCM600 the user can modify the standard configurationaccording to the actual needs. The IED is delivered from the factory with defaultconnections described 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

1MAC201230-MB A Section 3RET615 variants


There are four IED variant-specific setting groups. Parameters can be set independentlyfor 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. Toenable the change of the active setting group via a binary input, connect a free binaryinput with PCM600 to the ActSG input of the SGCB-block.

Table 6: 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 input isenabled for changing the active setting group.

3.2.1 Standard configurationsThe transformer protection and control IED RET615 is available with two alternativestandard configurations.

Table 7: Standard configurations

Description Std conf.Current input only TA01

Current and voltage inputs TA02

Table 8: Supported functions

Standard configuration functionality Stdconfig.TA01

Stdconfig.TA02

Protection

Three-phase non-directional time overcurrent protection, low stage, high voltage side ● ●

Three-phase non-directional time overcurrent protection, high stage 1, high voltageside

● ●

Three-phase non-directional time overcurrent protection, low stage, low voltage side ● ●

Three-phase non-directional time overcurrent protection, high stage 1, low voltageside

● ●

Ground non-directional time overcurrent protection, low stage (Measured) ● ●

Ground non-directional time overcurrent protection, low stage (Calculated), lowvoltage side

● ●

Ground non-directional time overcurrent protection, high stage 1 (Measured) ● ●


Section 3 1MAC201230-MB ARET615 variants



Stdconfig.TA02

Ground non-directional time overcurrent protection, low stage(Calculated), highvoltage side

● ●

Ground non-directional time overcurrent protection, high stage 1 (Calculated), highvoltage side

● ●

Ground non-directional time overcurrent protection, high stage 1 (Calculated), lowvoltage side

● ●

Three-phase thermal overload protection, two time constants, high voltage side ● ●

Three-phase overvoltage protection, stage 1, low voltage side ●

Three-phase undervoltage protection, stage 1, low voltage side ●

Ground overvoltage protection, low voltage side ●

Negative sequence overvoltage protection, low voltage side ●

Directional ground-fault protection, low stage, low voltage side ●

Three-phase directional overcurrent protection, low stage, low voltage side ●

Loss of load protection, high voltage side ●

Low impedance restricted ground fault protection, low voltage side ● ●

Transformer differential protection for two winding transformers ● ●

Arc flash detection with three sensors ○ ○

Circuit breaker failure protection, low voltage side ● ●

Control

Circuit breaker control, low voltage side ● ●

Supervision and monitoring

Circuit breaker condition monitoring, low voltage side ● ●

Trip-circuit monitoring of two trip circuits ● ●

Fuse failure supervision, low voltage side ●

Measurement

Three-phase current measurement, high voltage side ● ●

Three-phase current measurement, low voltage side ● ●

Three-phase voltage measurement, low voltage side ●

Sequence current measurement , high voltage side ● ●

Sequence current measurement , low voltage side ● ●

Sequence voltage measurement, low voltage side ●

Ground current measurement ● ●

Ground voltage measurement ●

Three-phase power and energy measurement, low voltage side ●

Tap position ● ●

Disturbance recorder ● ●





Stdconfig.TA02

Sequence of events recorder ● ●

Fault recorder ● ●

Electrically latched/self resetting trip output 1 and 2 ● ●

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



3.2.2 Connection diagrams

16

151918

10

111213

14

22

23

24

SO2

TCM-2

PO4

SO1

TCM-1

PO317

21

20

X120

1

23

45

67

89

1011

1213

14IG_A

IA_A

IB_A

IC_A

X110

12

56

7

89

10 BI 6

BI 5

BI 4

BI 3

BI 1

BI 8

BI 712

13

11

ABC

S1

S2

P1

P2

X100

67

89

10

2

1

3

45

PO2

PO1

IRF

+

-Vaux

X110

16

14

15

19

17

18

22

20

21

SO3

SO2

SO1

24

23SO4

X130

12

10

11

15

13

14

18

16SO3

SO2

SO1

17

1)

4 BI 23

X13012

3

45

6 BI 4

BI 3

BI 2

BI 1

BI 6

BI 58

9

7

X13Light sensor input 1

1)


1)


1)

1) Optional

1)

52

IC_B

IA_B

IB_B

S2

S1

52

abc

P2

P1

S2

S1

PositiveCurrentDirection

P2

P1

2) 100BaseFX / LC or 100BaseTX / RJ-45

GUID-7A4484F0-D803-4B11-8C2D-E10E4D6B07F6 V1 EN

Figure 6: Connection diagram for configuration TA01: current inputs only



16

151918

10

111213

14

22

23

24

SO2

TCM-2

PO4

SO1

TCM-1

PO317

21

20

X120

1

23

45

67

89

1011

1213

14IG_A

IA_A

IB_A

IC_A

S1

S2

P1

P2

X100

67

89

10

2

1

3

45

PO2

PO1

IRF

+

-Vaux

X110

16

14

15

19

17

18

22

20

21

SO3

SO2

SO1

24

23SO4

X11012

3

45

6 BI 4

BI 3

BI 2

BI 1

BI 6

BI 58

9

7


1)


1)


1)

1) Optional

52

IC_B

IA_B

IB_B

S2

S1

52

abc

P2

P1

S2

S1


P2

P1

X13012

56

78

9

10

VB

VA

BI 4

BI 3

BI 1

VG

VC

1213

11

ABC

4 BI 23

Not in use

16

15

18

17

14

dnda

a

nN

A

2) 100BaseFX / LC or 100BaseTX / RJ-45

GUID-CB8FEE82-9CA3-4293-A06C-F93C1F887DBB V1 EN

Figure 7: Connection diagram for configuration TA02: current and voltage inputs



3.3 Standard configuration TA01: Current inputs only

3.3.1 ApplicationsThe standard configuration includes three-phase differential, short-circuit, overcurrent,earth-fault, thermal overload and negative phase-sequence protection in powertransformer feeders. The standard configuration is mainly intended for protection of the2W-power transformer at medium voltage applications.

The IED with this standard configuration is delivered from the factory with defaultsettings and parameters. The end-user flexibility for incoming, outgoing and internalsignal designation within the IED enables this configuration to be further adapted todifferent primary circuit layouts and the related functionality needs by modifying theinternal functionality using PCM600.

3.3.2 FunctionsTable 9: Functions included in the RET615 standard configuration TA01

Function IEC 61850 IEC 60617 ANSIIncluded functions

Three-phase current measurement, high-voltageside


Three-phase current measurement, low-voltageside

CMMXU2 3I(B) IA,IB,IC (2)

Sequence current measurement , high-voltageside

CSMSQI1 I1,I2,I0 I1, I2, I0 (1)

Sequence current measurement , low-voltage side CSMSQI2 I1,I2,I0(B) I1, I2, I0 (2)

Three-phase non-directional time overcurrentprotection, low stage, high-voltage side

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

Three-phase non-directional time overcurrentprotection, high stage 1, high-voltage side

PHHPTOC1 3I>>(1) 50P (1)


PHLPTOC2 3I>(2) 51P (2)


PHHPTOC3 3I>>(3) 50P (2)

Ground non-directional time overcurrentprotection, low stage (Calculated), high-voltageside

EFLPTOC2 I0>(2) 51N (1)

Ground non-directional time overcurrentprotection, high stage 1 (Calculated), high-voltage side

EFHPTOC3 I0>> (3) 50N (1)

Ground non-directional time overcurrentprotection, high stage 1 (Calculated), low-voltageside

EFHPTOC5 I0>> (5) 50N (2)




Function IEC 61850 IEC 60617 ANSIThree-phase thermal overload protection, twotime constants, high-voltage side


Circuit-breaker failure protection, low-voltage side CCBRBRF1 3I>/IoBF(1) 50BF (2)



Electrically latched/self-resetting trip output 1 TRPPTRC1 Trip(1) 86/94-1

Electrically latched/self-resetting trip output 2 TRPPTRC2 Trip(2) 86/94-2

Disturbance recorder RDRE1 DR DFR



Circuit-breaker control, low-voltage side CBXCBR1 I<->O CB 52 (2)

Loss of load protection, high-voltage side LOFLPTUC1 3I< 37 (1)

Circuit-breaker condition monitoring, low-voltageside

SSCBR1 CBCM 52CM (2)



Transformer differential protection for two windingtransformers

TR2PTDF1 3dI>T 87T



Ground non-directional time overcurrentprotection, low stage (Measured)

EFLPTOC1 I0>(1) 51G

Ground non-directional time overcurrentprotection, high stage 1 (Measured)


Ground non-directional time overcurrentprotection, low stage (Calculated), low-voltageside

EFLPTOC3 I0>(3) 51N (2)

Optional functions






3.3.2.1 Default I/O connections

Table 10: Default connections for binary inputs

Binary input Description Connector pinsX110-BI1 Blocking of O/C high stage (high voltage) and instantaneous

stage (low voltage)X110-1,2

X110-BI2 External protection trip X110-3,4

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

X110-BI4 Circuit breaker spring charged indication X110-7,6

X110-BI5 High-voltage side disconnector closed X110-8,9

X110-BI6 High-voltage side disconnector open X110-10,9

X110-BI7 High-voltage side circuit breaker closed X110-11,12

X110-BI8 High-voltage side circuit breaker open X110-13,12

X130-BI1 BCD sign bit (tap changer position) X130-1,2

X130-BI2 BCD bit 1 LSB X130-2,3

X130-BI3 BCD bit 2 X130-4,5

X130-BI4 BCD bit 3 X130-5,6

X130-BI5 BCD bit 4 X130-7,8

X130-BI6 BCD bit 5 MSB X130-8,9

Table 11: Default connections for binary outputs

Binary output Description Connector pinsX100-PO1 Close high-voltage 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

X100-PO3 Open circuit breaker/trip coil 1 high voltage X100-15-19

X100-PO4 Open circuit breaker/trip coil 2 low voltage X100-20-24

X110-SO1 Overcurrent operate alarm X110-14,15,16

X110-SO2 Differential protection operate alarm X110-17,18,19

X110-SO3 Earth fault operate alarm X110-20,21,22

X110-SO4Thermal overload and negative phase-sequence protectionoperate alarm X110-23,24



Table 12: Order codes

LED label Order code optionsLED label 1 HATAAAAxxAE1BNNxXC

HATAAAAxxBE1BNNxXC

HATAAAAxx3E1BNNxXC

LED label 2 HATAAAAxxFE1BNNxXC

HATAAAAxxGE1BNNxXC

Table 13: Configuration option LED assignments

LED label 1 LED label 2LED1 Phase A Phase A

LED2 Phase B Phase B

LED3 Phase C Phase C

LED4 Neutral/Ground Neutral/Ground

LED5 Time Time

LED6 Instantaneous Instantaneous

LED7 Differential/REF Differential/REF

LED8

LED9 Breaker failure/Alarm Breaker failure/Alarm

LED10 Overload alarm/Trip Overload alarm/Trip

LED11 Arc flash detection

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.

The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with IA,IB,IC(1) represents the three phasecurrents of the high-voltage side of the transformer and IA,IB,IC(2) represents thethree phase currents of the low-voltage side of the transformer. The signal marked withIG represents the measured neutral current measured between the neutral point of thetransformer and grounding.



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.

X120

1

23

45

67

89

1011

1213

14IG

IA (2)

IB (2)

IC (2)

ABC

S1

S2

P1

P2

52

IC (1)

IA (1)

IB (1)

S2

S1

52

abc

P2

P1

S2

S1


P2

P1

LV

HV

TRANSFORMER DIFFERENTIAL PROTECTION

TR2PTDF1

TRIPIA,IB,IC (1)

87T3dI>T

OPR_LSIA,IB,IC (2)

OPR_HSBLOCK

BLKD2HBLK_OPR_LS-T

BLKDD5HBLK_OPR_HS-T

BLKDWAV

LED7

GUID-D739D833-1759-446D-A5B0-224D0DBC2F3D V1 EN

Figure 8: Stabilized and instantaneous differential protection for 2W-transformers

The stabilized differential protection for 2W-transformers (87T) provides protection ofpower transformer unit including, for example, winding short-circuit and interturnfaults. The IED compares the phase currents on both sides of the object to be protected.If the differential current of the phase currents in one of the phases exceed the settingof the stabilized operation characteristic or the instantaneous protection stage of thefunction, the function provides an operate signal.

For transformers having an on-line tap changer, the tap position information isrecommended to be used in differential protection, as the ratio difference of tapchanger movements can be corrected in 87T.

The position indication of the OLTC is recommended for differential protection toincrease sensitivity.



All operate signals are connected to the Master Trip 1 and 2 and also to the alarm LEDs.

3I>(1)

PICKUPIA, IB, ICBLOCK

ENA_MULT

51P(1)

PHLPTOC2PICKUPIA, IB, IC

BLOCK

ENA_MULT

51P(2)

PHHPTOC3PICKUPIA, IB, IC

BLOCK

ENA_MULT

50P(2)


BLOCK

ENA_MULT

50P(1)INRPHAR1

BLK2HIA, IB, IC

BLOCK

INR

TRIP_PhA

86/94 LED

TRIP_PhA

OR

LED 1

86/94 LEDOR

LED 2

PHASE B TRIP

86/94 LEDOR

LED 3

PHASE C TRIP

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhBTRIP_PhB

TRIP_PhCTRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

PHASE A TRIP

Trip1

LEDPTRC

LEDPTRC

TRIP

TRIP

TRIP

TRIP

NOTE 1

NOTE 1

NOTE 1

NOTE 1

NOTE 1: AVAILABLE ONLY FOR LED INDICATION.

AVAILABLE FOR MAPPING USINGSMT TOOL IN PCM TO ANY PROTECTION,DEPENDING ON APPLICATION.

OR

LED 6

INSTANTANEOUS TRIP

PHASE OVERCURRENT PROTECTION INDICATION

OR

LED 5

TIME TRIP

symbolIEC60617

Number/AcronymANSI Device/Function

LEDPTRC

Trip1

Trip1

PHLPTOC1

3I>(2)

3I>>(1)

3I>>(3)

3I2f>

identificationIEC61850

GUID-666C5CBF-5EE1-46D4-86E2-A069FDD1061F V1 EN

Figure 9: Phase overcurrent protection

Two stages for both high-voltage and low-voltage sides as a total of four overcurrentstages are offered for overcurrent and short-circuit protection. The inrush detectionblock’s (INR) output BLK2H provides the possibility to either block the function ormultiply the active settings for any of the shown protection function blocks.

A selective backup overcurrent protection can be achieved by using blockings betweenhigh-voltage side and low-voltage side overcurrent stages. This kind of blockingscheme enables coordinated overlapping of overcurrent protection zones.



EFLPTOC2PICKUP

BLOCK

51N(1)

EFLPTOC3PICKUP

BLOCK

51N(2)

EFHPTOC5PICKUP

BLOCK

50N(2)

PICKUP

BLOCK

50N(1)

ORTRIP

TRIP

TRIP

TRIP

EFHPTOC3

BI 1 (Blocking)

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

OR

TRIP_NEUT

86/94 LED

TRIP_NEUT

Trip 1

NEUTRAL OVERCURRENT PROTECTION

LED4

TRIPNEUTRAL/GROUND

LED 6

TRIPINSTANTANEOUS

LED 5

TIME TRIP

LEDPTRC

I0>(2)

I0>>(5)

I0>>(3)

I0>(3)

OR

GUID-4570E2D8-8FDD-4ABB-82B0-7CB64557E765 V1 EN

Figure 10: Non-directional ground-fault protection

EFLPTOC1PICKUPIG

BLOCK

ENA_MULT

51G

EFHPTOC1PICKUPIG

BLOCK

ENA_MULT

50G

TRIP_NEUT

86/94LED

TRIP_NEUT

OR

LED4

TRIP

TRIP

TRIPNEUTRAL / GROUND

TRIP(1)

LED6

TIME TRIP

INSTANTANEOUS

GROUND OVERCURRENT PROTECTION

BI 1 (Blocking)

LED5

TRIP

LEDPTRC

I0>(1)

I0>>(1)

GUID-EF0171DC-E505-4BE1-B4C9-5DEA35E48733 V1 EN

Figure 11: Ground overcurrent protection



Two stages are offered for non-directional ground-fault protection for high and lowside of the transformers. In addition, there are two stages of ground fault protectionbased on measured ground current.

LREFPNDF1

PICKUP3I

IG

87LOZREF(2)

TRIP

dIoLo>

REF_PICKUP

REF_TRIP

LED4

RESTRICTED EARTH FAULT PROTECTION

LED7

GUID-58D2DD05-C1F9-47C0-8DBB-DA27BD8E1162 V1 EN

Figure 12: Restricted low-impedance earth-fault protection

The configuration includes restricted low-impedance earth-fault protection function forlow-voltage side of two-winding power transformers, 87LOZREF(2). The numericaldifferential current stage operates exclusively on earth faults occurring in the protectedarea, that is, in the area between the phase and neutral current transformers. A groundfault in this area appears as a differential current between the residual current of thephase currents and the neutral current of the conductor between the WYE-point of thetransformer and the ground.



THERMAL OVERLOAD PROTECTION

T2PTTR1TRIP

ALARM

IA, IB, IC

BLK_CLOSE

PICKUP

BLK_OPR

ENA_MULT

LED10

OVERLOAD ALARM

OR

3Ith>T

GUID-156D07E7-E15D-481C-8A78-F9E7988F3568 V1 EN

Figure 13: Three-phase thermal overload protection for power transformers

Three-phase thermal overload protection for power transformers, 49T(1), providesindication on overload situations, and it is connected to the CT's on high side of thetransformer.

PO2

89

X100

BREAKER FAILURE PROTECTION

Circuit Breaker failureprotection trip toassociated breaker(s)

TRRET

TRBU

IA, IB, IC

PICKUP

POSCLOSE

BREAKER FAILURE

CB_FAULT_AL

CB_FAULT

IN

BLOCK

LED9

50BF(2)

51P(2) Trip

50P(2) Trip

51G Trip

51N(2) Trip

50G Trip

AFD-2(2) Trip

87T Trip

AFD-3(2) Trip

87LOZREF(2) Trip

50N(2) Trip

AFD-1(2) Trip

OR

NOTES: 1) DASHED LINE INDICATES OPTIONALINPUT BASED ON CONFIGURATION.

3I>/Io>BF(1)

BI 2 (Breaker Close Status)

CCBRBRF1

GUID-0DDB74B6-38CE-4A5A-8240-55A409B6AD91 V1 EN

Figure 14: Circuit-breaker failure protection

The circuit-breaker failure protection 50BF(2) is initiated via the start input by anumber of different protection stages in the IED. 50BF(2) offers different operating



modes associated with the circuit-breaker position and the measured phase and residualcurrents.

50BF(2) has two operating outputs: TRRET and TRBU. The TRRET operate output isused for retripping its own circuit breaker. The TRBU output is used for retrippingboth the high-voltage and low-voltage side circuit breakers through Master Trip 1 and2. The TRBU operate output signal is connected to the output PO2 (X100: 8-9). LED 6is used for backup (TRBU) operate indication.

3.3.3.2 Functional diagrams for digital fault recorder and trip circuit monitoring

DIGITAL FAULT RECORDER

DREC

DFR

AI#2

AI#1

AI#4

AI#3

AI#6

AI#5

AI#8

AI#7

AI#10

AI#9

AI#12

AI#11

IA(1)-A

IB(1)-A

IC(1)-A

IG-A

IA(2)-A

IB(2)-A

IC(2)-A

Disabled

DR

Disabled

Disabled

Disabled

Disabled

GUID-6F8418F8-B7FB-4975-8FAC-1401809BE9C5 V1 EN

Figure 15: Digital fault recorder, AI#1...12



DREC

DFR

BI#2

BI#1

BI#4

BI#3

BI#6

BI#5

BI#8

BI#7

BI#10

BI#9

BI#12

BI#11

BI#14

BI#13

BI#16

BI#15

BI#17

51P(1) Trip

50P(1) Trip

51P(2) Trip

50P(2) Trip

51G Trip

50N(2) Trip

Spare

Spare

49T(1) Trip

49T(1) AlmThm

50BF(2) OpEx

50BF(2) OpIn

BI#18

BI#20

BI#19

BI#22

BI#21

BI#24

BI#23

BI#25

AFD-1(2) FADet

AFD-2(2) FADet

AFD-3(2) FADet

AFD-2(2) Trip

AFD-1(2) Trip

Spare

AFD-3(3) Trip

Spare

BI#26

BI#27

BI#28

Spare

Spare

Spare

BI#30

BI#29

BI#31

BI#32Spare

TCM-1 Alarm

Spare

TCM-2 Alarm

Spare

DR

51N(1) Trip

51N(2) Trip

50G Trip

50N(1) Trip

NOTES: 1) DASHED LINE INDICATES OPTIONAL INPUT BASED ON CONFIGURATION.

GUID-8C5D6FC7-8639-4FCB-B3DC-87D6097A0342 V1 EN

Figure 16: Digital fault recorder, BI#1...32



DREC

DFR

BI#34

BI#33

BI#36

BI#35

BI#38

BI#37

BI#40

BI#39

BI#42

BI#41

BI#44

BI#43

BI#46

BI#45

BI#48

BI#47

BI#49

Spare

52CM(2) TRV_T_OP_ALM

52CM(2) TRV_T_CL_ALM

52CM(2) Alarm

52CM(2) CB_LIFE_ALM

BI#50

BI#52

BI#51

BI#54

BI#53

BI#56

BI#55

BI#57

BI#58

BI#59

BI#60

BI#62

BI#61

BI#63

BI#64

X110-7X110-5X110-3

X110-6X110-4X110-2 X110-8

Spare

Spare

Spare

Spare

37(1) Trip

87LOZREF(2) Trip

87T Trip


DR

X110-1 X130-1

X130-2

X130-3

X130-4

X130-5

X130-6

Spare

Spare

Spare

Spare


Spare

Spare

GUID-832D1BCB-342C-4539-A6CF-45BE6B110E6F V1 EN

Figure 17: Digital fault recorder, BI#33...64

The digital fault recorder has 64 digital inputs. All pickup and trip signals from theprotection stages are routed to trigger the digital fault recorder or alternatively only tobe recorded by the digital fault recorder depending on the parameter settings.



BI 2 (CB Close Status) OROR86/94-1 Trip

TRIP CIRCUIT MONITORING

TCM-1

ALARMBLOCK

TCSSCBR1

86/94-2 TripLED9

TRIP CIRCUIT FAILURE

TCM-2

ALARMBLOCK

TCSSCBR2

TCS(1)

TCS(2)

GUID-61C004AA-FD1D-4C9E-A63B-919119E20B62 V1 EN

Figure 18: Trip circuit monitoring

Two separate TCM functions have been included: TCM-1 for PO3 (X100:16-19) andTCM-2 for PO4 (X100:20-23).

3.3.3.3 Functional diagrams for control and interlocking

MASTER TRIP 1 LOGIC

16

151918TCM-1

PO317

51P(1) Trip50P(1) Trip51N(1) Trip50N(1) Trip49T(1) Trip87T Trip87LOZREF(2) Trip

X100+

OR

OpenSignal to

86/94-1

TRIPCL_LKOUT

BLOCKTRIP

RST_LKOUT

With lock-out mode selection

TRPPTRC1OR

BI4

52 (2) EXE_OP

Trip Coil 1

Breaker

2)

NOTES: 1) NON-LATCHED MODE AS DEFAULT.

Trip(1)

GUID-15DD976C-E8B7-4D23-B156-A41CDB744C8B V1 EN

Figure 19: Master trip 1 logic



22

23

24TCM-2

PO421

20

MASTER TRIP 2 LOGIC

51P(2) Trip50P(2) Trip51G Trip51N(2) Trip50G Trip

AFD-2(2) Trip

50BF(2) TripAFD-3(2) Trip

87T Trip87LOZREF(2) Trip

50N(2) TripAFD-1(2) Trip

20X100

+

OR

OpenSignal to

86/94-2

TRIP

CL_LKOUT

BLOCK

TRIP

RST_LKOUT


TRPPTRC2OR

BI4

52 (2) EXE_OP

Trip Coil 2

Breaker

2)


2) NON-LATCHED MODE AS DEFAULT.

Trip(2)

GUID-A5B923B1-6134-43A7-A264-9A934A522CA2 V1 EN


The trip signals from the protections are connected to the two trip output contacts PO3(X100:15-19) and PO4 (X100:20-24) via the corresponding Master Trips 86/94-1 and86/94-2. Open control commands to the circuit breaker from local or remote CBXCBR1-exe_op are connected directly to the output PO3 (X100:16-19).

86/94-1 and 2 provide the lockout/latching function, event generation and the tripsignal duration setting. If the lockout operation mode is selected, one binary input canbe reassigned to the RST_LKOUT input of the Master Trip to enable external resetwith a push button.

BI 3 (Breaker Open Status)BI 2 (Breaker Close Status)

Always True

OR

67

PO1

+

X100

79 CLOSE_CB

CIRCUIT BREAKER CONTROL AND INTERLOCKING52 EXE_OP

52(2)

SELECTEDENA_OPEN

ENA_CLOSE

BLK_OPEN

BLK_CLOSE

EXE_OP

EXE_CL

OPENPOS

CLOSEPOS

EXE_OP

EXE_CL

OPENPOS

CLOSEPOS

OKPOS

CBXCBR1

CloseBreaker

X110

56

7BI 4

BI 3PRES_ALM_INPRES_LO_INSPR_CHR_STSPR_CHRRST_IPOW

TRV_T_OP_ALMTRV_T_CL_ALMDIFTRVTOPALMDIFTRVTCLALMSPR_CHR_ALM

OPR_ALMOPR_LO

IPOW_ALMIPOW_LO

CB_LIFE_ALMMON_ALM

PRES_ALMPRES_LO

OPENPOSINTERMPOSCLOSEPOS

BLOCKPOSOPEN

52CM(2)CBCM

OR

LED9

(CB CONDMONITOR)

POSCLOSE

RST_CB_WEAR

CB Spring Charged

GAS Pressure Alarm

SSCBR1

I<->O CB

GUID-E0814F4D-61DD-4324-BF97-41D502857F55 V1 EN

Figure 21: Circuit breaker control and interlocking



The circuit breaker closing is enabled when the ENA_CLOSE input is activated. TheENA_CLOSE input can be activated by the configuration logic, which is acombination of the status of the Master Trip Logics. The open operation is always enabled.

If the ENA_CLOSE and BLK_CLOSE signals are completely removedfrom the breaker control function block 52(2) with PCM600, thefunction assumes that the breaker close commands are allowedcontinuously.

The circuit breaker condition monitoring function (52CM) supervises the circuitbreaker status based on the binary input information connected and measured currentlevels. The function introduces various supervision methods. The correspondingsupervision alarm signals are routed to LED 9.

COMMON PICKUP SIGNAL

LEDPTRC1

86/94 LED

TPGAPC1

TP-1

PICKUP

TRIP

PICKUP

TRIP

PICKUP

TRIP

PICKUP

TRIP

Pickup SignalSO#1 (X100:10-11-12)

1) THERE ARE FOUR PULSE TIMERS AVAILABLE-ONE OF THEM IS USED FOR DEFAULT CONFIGURATIONS.ALL PULSE TIMERS INCLUDING TP-1 CAN BE MAPPEDFOR SPECIFIC APPLICATIONS USING SMT IN PCM TOOLS.

NOTE:

1)

Trip1 TP-1

GUID-B48DB1BC-8B98-4413-8D58-9980404EB9AD V1 EN

Figure 22: Common pickup signal



TRPPTRC1

PICKUP

TRIP

PICKUP

TRIP

TRPPTRC2

PICKUP

TRIP

PICKUP

TRIP

Trip SignalSO#2 (X100:13-14-15)

Trip(1)

Trip(2)

GUID-C56EFFDC-0D03-4F95-A632-4D1D33E2BB1A V1 EN

Figure 23: Common trip signal

The signal outputs from the IED are connected to give dedicated information onpickups and trips.

• Pickup of any protection function SO1 (X100:10-12)• Trip of any protection function SO2 (X100:13-15).

The TP-1 is a timer and used for setting the minimum pulse length for the outputs.



TAP CHANGER POSITION INDICATION

TPOSSLTC1

SIGN_BIT

BI1BI0

BI4BI5

BI2BI3

TPOSM

X130

12

3

45

6BI 4

BI 3

BI 2

BI 1

BI 6

BI 58

9

7

BCD BIT 5

BCD BIT 4

BCD BIT 3

BCD BIT 2

BCD BIT 1

BCD SIGN BIT

GUID-952728EB-55D7-4D9B-A85C-A0A9314E4827 V1 EN

Figure 24: Tap changer position indication

To increase the sensitivity of the stabilized differential function, the tap positioninformation from the tap changer is connected to the IED via the tap changer positionindication function 84T. 84T is connected to the binary inputs of the X130 BIO card.84T uses binary-coded methods to generate the integer value of the tap changer position.

3.3.3.4 Functional diagram for optional ARC flash detection

Optional ARC flash detectors (AFD 1-3) are included in the standard configuration.The ARC flash detection offers individual function blocks for each of the three ARCsensors that can be connected to the IED. Each ARC protection function block has twodifferent operation modes, with or without the phase current check.



ARCSARC1

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODE

REM_FLT_ARC

IG

ARCSARC2

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODEREM_FLT_ARC

IG

ARCSARC3

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODE

REM_FLT_ARC

IG

LED11

ARC(1)

ARC(2)

ARC(3)

GUID-14D00EE3-5F20-4E67-9174-675DB88AAA02 V1 EN

Figure 25: Arc flash detection

Trip signals from the ARC protection function blocks are connected to the Master TripLogic and also to the alarm LED 11 as a common arc flash detection.



3.4 Standard configuration TA02: Current and voltageinputs

3.4.1 ApplicationsThe standard configuration includes three-phase differential, short-circuit, overcurrent,earth-fault, thermal overload and negative phase-sequence protection in powertransformer feeders. The standard configuration is mainly intended for protection of the2W-power transformer at medium voltage applications.

The IED with this standard configuration is delivered from the factory with defaultsettings and parameters. The end-user flexibility for incoming, outgoing and internalsignal designation within the IED enables this configuration to be further adapted todifferent primary circuit layouts and the related functionality needs by modifying theinternal functionality using PCM600.

3.4.2 FunctionsTable 14: Functions included in the RET615 standard configuration TA02

Function IEC 61850 IEC 60617 ANSIIncluded functions

Three-phase current measurement, high voltageside


Three-phase current measurement, low voltageside

CMMXU2 3I(B) IA,IB,IC (2)

Three-phase voltage measurement, low voltageside

VMMXU1 3U VA,VB,VC (2)

Sequence current measurement, high voltage side CSMSQI1 I1,I2,I0 I1, I2, I0 (1)

Sequence current measurement, low voltage side CSMSQI2 I1,I2,I0(B) I1, I2, I0 (2)

Sequence voltage measurement, low voltage side VSMSQI1 U1,U2,U0 V1,V2,V0 (2)

Three-phase power and energy measurement,low voltage side

PEMMXU1 P,E P,E (2)

Three-phase non-directional time overcurrentprotection, low stage, high voltage side

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

Three-phase non-directional time overcurrentprotection, high stage 1, high voltage side

PHHPTOC1 3I>>(1) 50P (1)


PHLPTOC2 3I>(2) 51P (2)


PHHPTOC3 3I>>(3) 50P (2)




Function IEC 61850 IEC 60617 ANSIGround non-directional time overcurrentprotection, low stage(Calculated), high-voltageside

EFLPTOC2 I0>(2) 51N (1)

Ground non-directional time overcurrentprotection, high stage 1 (Calculated), high-voltage side

EFHPTOC3 I0>> (3) 50N (1)

Ground non-directional time overcurrentprotection, high stage 1 (Calculated), low voltageside

EFHPTOC5 I0>> (5) 50N (2)

Three-phase thermal overload protection, twotime constants, high-voltage side


Circuit-breaker failure protection, low voltage side CCBRBRF1 3I>/IoBF(1) 50BF (2)





Disturbance recorder RDRE1 DR DFR



Circuit breaker control, low-voltage side CBXCBR1 I<->O CB 52 (2)

Circuit-breaker condition monitoring, low-voltageside

SSCBR1 CBCM 52CM (2)



Transformer differential protection for twowinding transformers

TR2PTDF1 3dI>T 87T


Three-phase overvoltage protection, stage 1, low-voltage side

PHPTOV1 3U>(1) 59 (2)

Three-phase undervoltage protection, stage 1,low-voltage side

PHPTUV1 3U<(1) 27 (2)

Ground overvoltage protection, low-voltage side ROVPTOV1 U0>(1) 59G (2)

Negative sequence overvoltage protection, low-voltage side

NSPTOV1 U2> 47 (2)

Directional ground-fault protection – low stage,low voltage side

DEFLPDEF1 I0>->(1) 67/51N (2)

Three-phase directional overcurrent protection,low stage, low-voltage side

DPHLPDOC1 3I>->(1) 67/51P (2)

Fuse failure supervision, low-voltage side SEQRFUF1 FUSEF 60 (2)


Ground voltage measurement RESVMMXU1 U0 VG




Function IEC 61850 IEC 60617 ANSIGround non-directional time overcurrentprotection, low stage (Measured)

EFLPTOC1 I0>(1) 51G

Ground non-directional time overcurrentprotection, high stage 1 (Measured)


Ground non-directional time overcurrentprotection, low stage (Calculated), low-voltageside

EFLPTOC3 I0>(3) 51N (2)

Optional functions




3.4.2.1 Default I/O connections

Table 15: Default connections for binary inputs

Binary input Description Connector pinsX110-BI1 Blocking of O/C high stage (high voltage) and instantaneous

stage (low voltage)X110-1,2

X110-BI2 External protection trip X110-3,4

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

X110-BI4 Circuit breaker spring charged indication X110-7,6

X110-BI5 High-voltage side disconnector closed X110-8,9

X110-BI6 High-voltage side disconnector open X110-10,9

X110-BI7 High-voltage side circuit breaker closed X110-11,12

X110-BI8 High-voltage side circuit breaker open X110-13,12

X130-BI1 BCD sign bit (tap changer position) X130-1,2

X130-BI2 BCD bit 1 LSB X130-2,3

X130-BI3 BCD bit 2 X130-4,5

X130-BI4 BCD bit 3 X130-5,6

X130-BI5 BCD bit 4 X130-7,8

X130-BI6 BCD bit 5 MSB X130-8,9

Table 16: Default connections for binary outputs

Binary output Description Connector pinsX100-PO1 Close high-voltage 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)




Binary output Description Connector pinsX100-SO2 General operate indication X100-13,14

X100-PO3 Open circuit breaker/trip coil 1 high voltage X100-15-19

X100-PO4 Open circuit breaker/trip coil 2 low voltage X100-20-24

X110-SO1 Overcurrent operate alarm X110-14,15,16

X110-SO2 Differential protection operate alarm X110-17,18,19

X110-SO3 Earth fault operate alarm X110-20,21,22

X110-SO4Thermal overload and negative phase-sequence protectionoperate alarm X110-23,24

Table 17: Order codes

LED label Order code optionsLED label 1 HATBBABAxAE1BNNxXC

HATBBABAxBE1BNNxXC

HATBBABAx3E1BNNxXC

LED label 2 HATBBABAxFE1BNNxXC

HATBBABAxGE1BNNxXC

Table 18: Configuration option LED assignments

LED label 1 LED label 2LED1 Phase A Phase A

LED2 Phase B Phase B

LED3 Phase C Phase C

LED4 Neutral/Ground Neutral/Ground

LED5 Time Time

LED6 Instantaneous Instantaneous

LED7 Differential/REF Differential/REF

LED8 Voltage Voltage

LED9 Breaker failure/Alarm Breaker failure/Alarm

LED10 Overload alarm/Trip Overload alarm/Trip

LED11 Arc flash detection

3.4.3 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.

The analog channels are assigned to different functions as shown in the functionaldiagrams. The common signal marked with IA,IB,IC(1) represents the three phasecurrents of the high-voltage side of the transformer and IA,IB,IC(2) represents thethree phase currents of the low-voltage side of the transformer. The signal marked withIG represents the measured neutral current measured between the neutral point of thetransformer and grounding.

3.4.3.1 Functional diagrams for protection

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

X120

1

23

45

67

89

1011

1213

14IG

IA (2)

IB (2)

IC (2)

ABC

S1

S2

P1

P2

52

IC (1)

IA (1)

IB (1)

S2

S1

52

abc

P2

P1

S2

S1


P2

P1

LV

HV

TRANSFORMER DIFFERENTIAL PROTECTION

TR2PTDF1

TRIPIA,IB,IC (1)

87T3dI>T

OPR_LSIA,IB,IC (2)

OPR_HSBLOCK

BLKD2HBLK_OPR_LS-T

BLKDD5HBLK_OPR_HS-T

BLKDWAV

LED7

GUID-D739D833-1759-446D-A5B0-224D0DBC2F3D V1 EN

Figure 26: Stabilized and instantaneous differential protection for 2W-transformers

The stabilized differential protection for 2W-transformers (87T) provides protection ofpower transformer unit including, for example, winding short-circuit and interturnfaults. The IED compares the phase currents on both sides of the object to be protected.



If the differential current of the phase currents in one of the phases exceed the settingof the stabilized operation characteristic or the instantaneous protection stage of thefunction, the function provides an operate signal.

For transformers having an on-line tap changer, the tap position information isrecommended to be used in differential protection, as the ratio difference of tapchanger movements can be corrected in 87T.

The position indication of the OLTC is recommended for differential protection toincrease sensitivity.

All operate signals are connected to the Master Trip 1 and 2 and also to the alarm LEDs.

3I>(1)

PICKUPIA, IB, ICBLOCK

ENA_MULT

51P(1)

PHLPTOC2PICKUPIA, IB, IC

BLOCK

ENA_MULT

51P(2)


BLOCK

ENA_MULT

50P(2)


BLOCK

ENA_MULT

50P(1)INRPHAR1

BLK2HIA, IB, IC

BLOCK

INR

TRIP_PhA

86/94 LED

TRIP_PhA

OR

LED1

86/94 LEDOR

LED 2

PHASE B TRIP

86/94 LEDOR

LED 3

PHASE C TRIP

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhBTRIP_PhB

TRIP_PhCTRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP_PhA

TRIP_PhB

TRIP_PhC

PHASE A TRIP

Trip1

LEDPTRC

LEDPTRC

TRIP

TRIP

TRIP

TRIP

NOTE 1

NOTE 1

NOTE 1

NOTE 1

NOTE 1: AVAILABLE ONLY FOR LED INDICATION.

AVAILABLE FOR MAPPING USINGSMT TOOL IN PCM TO ANY PROTECTION,DEPENDING ON APPLICATION.

OR

LED6

INSTANTANEOUS TRIP

PHASE OVERCURRENT PROTECTION INDICATION

OR

LED5

TIME TRIP

symbolIEC60617

Number/AcronymANSI Device/Function

LEDPTRC

Trip1

Trip1

PHLPTOC1

3I>(2)

3I>>(1)

3I>>(3)

3I2f>

identificationIEC61850

DPHLPDOC1PICKUPIA, IB, IC

BLOCK

ENA_MULT

67/51P(2)TRIP_PhA

TRIP_PhB

TRIP_PhC

TRIP

NOTE 1

3I>->(1)

GUID-CC5F6801-F1D1-45C5-B315-261F724291CB V1 EN

Figure 27: Phase overcurrent protection

Two stages for both high-voltage and low-voltage sides as a total of four overcurrentstages are offered for overcurrent and short-circuit protection. The inrush detection



block’s (INR) output BLK2H provides the possibility to either block the function ormultiply the active settings for any of the shown protection function blocks.

A selective backup overcurrent protection can be achieved by using blockings betweenhigh-voltage side and low-voltage side overcurrent stages. This kind of blockingscheme enables coordinated overlapping of overcurrent protection zones. In addition,there is one directional overcurrent protection provided on the low side of the transformer.

EFLPTOC2PICKUP

BLOCK

51N(1)

EFLPTOC3PICKUP

BLOCK

51N(2)

EFHPTOC5PICKUP

BLOCK

50N(2)

PICKUP

BLOCK

50N(1)

ORTRIP

TRIP

TRIP

TRIP

EFHPTOC3

BI 1 (Blocking)

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

IA, IB, IC

BLOCK

ENA_MULT

OR

TRIP_NEUT

86/94 LED

TRIP_NEUT

Trip 1

NEUTRAL OVERCURRENT PROTECTION

LED4

TRIPNEUTRAL/GROUND

LED 6

TRIPINSTANTANEOUS

LED 5

TIME TRIP

LEDPTRC

I0>(2)

I0>>(5)

I0>>(3)

I0>(3)

OR

GUID-4570E2D8-8FDD-4ABB-82B0-7CB64557E765 V1 EN

Figure 28: Non-directional ground-fault protection



EFLPTOC1PICKUPIG

BLOCK

ENA_MULT

51G

EFHPTOC1PICKUPIG

BLOCK

ENA_MULT

50G

TRIP_NEUT

86/94LED

TRIP_NEUT

OR

LED4

TRIP

TRIP

TRIPNEUTRAL / GROUND

TRIP(1)

LED6

TIME TRIP

INSTANTANEOUS

GROUND OVERCURRENT PROTECTION

BI 1 (Blocking)

LED5

TRIP

LEDPTRC

I0>(1)

I0>>(1)

I0>->(1)

PICKUP

TRIP

I0

U0

ENA_MULT

RCA_CTL

BLOCK

DEFLPDEF1

67/51N(2)

OR

GUID-C61E777D-5FB0-4E90-99C7-AFA81839FA20 V1 EN

Figure 29: Ground overcurrent protection

Two stages are offered for non-directional ground-fault protection for high and lowside of the transformers. In addition, there are two stages of ground-fault protectionbased on measured ground current. One directional ground overcurrent protection isalso provided on the low side of the transformer.



LREFPNDF1

PICKUP3I

IG

87LOZREF(2)

TRIP

dIoLo>

REF_PICKUP

REF_TRIP

LED4

RESTRICTED EARTH FAULT PROTECTION

LED7

GUID-58D2DD05-C1F9-47C0-8DBB-DA27BD8E1162 V1 EN

Figure 30: Restricted low-impedance earth-fault protection

The configuration includes restricted low-impedance earth-fault protection function forlow-voltage side of two-winding power transformers, 87LOZREF(2). The numericaldifferential current stage operates exclusively on ground faults occurring in theprotected area, that is, in the area between the phase and neutral current transformers.A ground fault in this area appears as a differential current between the residual currentof the phase currents and the neutral current of the conductor between the star-point ofthe transformer and earth.

THERMAL OVERLOAD PROTECTION

T2PTTR1TRIP

ALARM

IA, IB, IC

BLK_CLOSE

PICKUP

BLK_OPR

ENA_MULT

LED10

OVERLOAD ALARM

OR

3Ith>T

GUID-156D07E7-E15D-481C-8A78-F9E7988F3568 V1 EN

Figure 31: Three-phase thermal overload protection for power transformers



Three-phase thermal overload protection for power transformers, 49T(1), providesindication on overload situations, and it is connected to the CT's on high side of thetransformer.

PO2

89

X100

BREAKER FAILURE PROTECTION

Circuit Breaker failureprotection trip toassociated breaker(s)

TRRET

TRBU

IA, IB, IC

PICKUP

POSCLOSE

BREAKER FAILURE

CB_FAULT_AL

CB_FAULT

IN

BLOCK

LED9

50BF(2)

51P(2) Trip

50P(2) Trip

51G Trip

51N(2) Trip

50G Trip

AFD-2(2) Trip

87T Trip

AFD-3(2) Trip

87LOZREF(2) Trip

50N(2) Trip

AFD-1(2) Trip

OR


3I>/Io>BF(1)

BI 2 (Breaker Close Status)

67/51P(2) Trip

67/51N(2) Trip

CCBRBRF1

GUID-A4F87E7F-EC8C-48AF-978F-489028D08CD4 V1 EN

Figure 32: Circuit-breaker failure protection

The circuit-breaker failure protection 50BF(2) is initiated via the start input by anumber of different protection stages in the IED. 50BF(2) offers different operatingmodes associated with the circuit-breaker position and the measured phase and residualcurrents.

50BF(2) has two operating outputs: TRRET and TRBU. The TRRET operate output isused for retripping its own circuit breaker. The TRBU output is used for retrippingboth the high-voltage and low-voltage side circuit breakers through Master Trip 1 and2. The TRBU operate output signal is connected to the output PO2 (X100: 8-9). LED 6is used for backup (TRBU) operate indication.



3.4.3.2 Functional diagrams for digital fault recorder and trip circuit monitoring


DREC

DFR

AI#2

AI#1

AI#4

AI#3

AI#6

AI#5

AI#8

AI#7

AI#10

AI#9

AI#12

AI#11

IA(1)-A

IB(1)-A

IC(1)-A

IG-A

IA(2)-A

IB(2)-A

IC(2)-A

Disabled

VA-kV

VB-kV

VC-kV

VG-kV

DR

GUID-59704261-9FCB-43C7-BB87-AD27711D70A2 V1 EN

Figure 33: Digital fault recorder, AI#1...12




DREC

DFR

BI#2

BI#1

BI#4

BI#3

BI#6

BI#5

BI#8

BI#7

BI#10

BI#9

BI#12

BI#11

BI#14

BI#13

BI#16

BI#15

BI#17

51P(1) Trip

50P(1) Trip

51P(2) Trip

50P(2) Trip

51G Trip

50N(2) Trip

67/51P(2) Trip

67/51N(2) Trip

49T(1) Trip

49T(1) AlmThm

50BF(2) OpEx

50BF(2) OpIn

BI#18

BI#20

BI#19

BI#22

BI#21

BI#24

BI#23

BI#25

AFD-1(2) FADet

AFD-2(2) FADet

AFD-3(2) FADet

AFD-2(2) Trip

AFD-1(2) Trip

Spare

AFD-3(3) Trip

Spare

BI#26

BI#27

BI#28

Spare

Spare

Spare

BI#30

BI#29

BI#31

BI#32Spare

TCM-1 Alarm

Spare

TCM-2 Alarm

Spare

DR

51N(1) Trip

51N(2) Trip

50G Trip

50N(1) Trip


GUID-5EDB38A6-8216-4E32-B53F-DD5E3130C277 V1 EN

Figure 34: Digital fault recorder BI#1…32



DREC

DFR

BI#34

BI#33

BI#36

BI#35

BI#38

BI#37

BI#40

BI#39

BI#42

BI#41

BI#44

BI#43

BI#46

BI#45

BI#48

BI#47

BI#49

59(2) Trip

52CM(2) TRV_T_OP_ALM

52CM(2) TRV_T_CL_ALM

52CM(2) Alarm

52CM(2) CB_LIFE_ALM

BI#50

BI#52

BI#51

BI#54

BI#53

BI#56

BI#55

BI#57

BI#58

BI#59

BI#60

BI#62

BI#61

BI#63

BI#64

X110-7X110-5X110-3

X110-6X110-4X110-2 X110-8

27(2) Trip

59G(2) Trip

47(2) Trip

60(2) Str

37(1) Trip

87LOZREF(2) Trip

87T Trip


DR

X110-1 XA130-1

XA130-2

XA130-3

XA130-4

Spare

Spare

Spare

Spare

Spare

Spare

Spare

Spare

GUID-54246FB6-5089-4330-A68D-69F46CF536AA V1 EN

Figure 35: Digital fault recorder BI#33…64

The digital fault recorder has 64 digital inputs. All pickup and trip signals from theprotection stages are routed to trigger the digital fault recorder or alternatively only tobe recorded by the digital fault recorder depending on the parameter settings.



BI 2 (CB Close Status) OROR86/94-1 Trip

TRIP CIRCUIT MONITORING

TCM-1

ALARMBLOCK

TCSSCBR1

86/94-2 TripLED9

TRIP CIRCUIT FAILURE

TCM-2

ALARMBLOCK

TCSSCBR2

TCS(1)

TCS(2)

GUID-61C004AA-FD1D-4C9E-A63B-919119E20B62 V1 EN

Figure 36: Trip circuit monitoring

Two separate TCM functions have been included: TCM-1 for PO3 (X100:16-19) andTCM-2 for PO4 (X100:20-23).

3.4.3.3 Functional diagrams for control and interlocking

MASTER TRIP 1 LOGIC

16

151918TCM-1

PO317

51P(1) Trip50P(1) Trip51N(1) Trip50N(1) Trip49T(1) Trip87T Trip87LOZREF(2) Trip

X100+

OR

OpenSignal to

86/94-1

TRIPCL_LKOUT

BLOCKTRIP

RST_LKOUT


TRPPTRC1OR

BI4

52 (2) EXE_OP

Trip Coil 1

Breaker

2)

NOTES: 1) NON-LATCHED MODE AS DEFAULT.

Trip(1)

GUID-15DD976C-E8B7-4D23-B156-A41CDB744C8B V1 EN




22

23

24TCM-2

PO421

20

MASTER TRIP 2 LOGIC

51P(2) Trip50P(2) Trip51G Trip51N(2) Trip50G Trip

AFD-2(2) Trip

50BF(2) TripAFD-3(2) Trip

87T Trip87LOZREF(2) Trip

50N(2) TripAFD-1(2) Trip

20X100

+

OR

OpenSignal to

86/94-2

TRIP

CL_LKOUT

BLOCK

TRIP

RST_LKOUT


TRPPTRC2OR

BI4

52 (2) EXE_OP

Trip Coil 2

Breaker

2)


2) NON-LATCHED MODE AS DEFAULT.

Trip(2)

67/51N(2) Trip67/51P(2) Trip

GUID-4B8A34C2-BF8B-46C4-9CD8-0DE5EAFEAEE8 V1 EN


The operate signals from the protections are connected to the two trip output contactsPO3 (X100:15-19) and PO4 (X100:20-24) via the corresponding Master Trips 86/94-1and 86/94-2. Open control commands to the circuit breaker from local or remoteCBXCBR1-exe_op are connected directly to the output PO3 (X100:16-19).

86/94-1 and 2 provide the lockout/latching function, event generation and the tripsignal duration setting. If the lockout operation mode is selected, one binary input canbe reassigned to the RST_LKOUT input of the Master Trip to enable external resetwith a push button.

BI 3 (Breaker Open Status)BI 2 (Breaker Close Status)

Always True

OR

67

PO1

+

X100

79 CLOSE_CB

CIRCUIT BREAKER CONTROL AND INTERLOCKING52 EXE_OP

52(2)

SELECTEDENA_OPEN

ENA_CLOSE

BLK_OPEN

BLK_CLOSE

EXE_OP

EXE_CL

OPENPOS

CLOSEPOS

EXE_OP

EXE_CL

OPENPOS

CLOSEPOS

OKPOS

CBXCBR1

CloseBreaker

X110

56

7BI 4

BI 3PRES_ALM_INPRES_LO_INSPR_CHR_STSPR_CHRRST_IPOW

TRV_T_OP_ALMTRV_T_CL_ALMDIFTRVTOPALMDIFTRVTCLALMSPR_CHR_ALM

OPR_ALMOPR_LO

IPOW_ALMIPOW_LO

CB_LIFE_ALMMON_ALM

PRES_ALMPRES_LO

OPENPOSINTERMPOSCLOSEPOS

BLOCKPOSOPEN

52CM(2)CBCM

OR

LED9

(CB CONDMONITOR)

POSCLOSE

RST_CB_WEAR

CB Spring Charged

GAS Pressure Alarm

SSCBR1

I<->O CB

GUID-E0814F4D-61DD-4324-BF97-41D502857F55 V1 EN

Figure 39: Circuit breaker control and interlocking



The circuit breaker closing is enabled when the ENA_CLOSE input is activated. TheENA_CLOSE input can be activated by the configuration logic, which is acombination of the status of the Master Trip Logics. The open operation is always enabled.

If the ENA_CLOSE and BLK_CLOSE signals are completely removedfrom the breaker control function block 52(2) with PCM600, thefunction assumes that the breaker close commands are allowedcontinuously.

The circuit breaker condition monitoring function (SSCBR) supervises the circuitbreaker status based on the binary input information connected and measured currentlevels. The function introduces various supervision methods. The correspondingsupervision alarm signals are routed to LED 9.

COMMON PICKUP SIGNAL

LEDPTRC1

86/94 LED

TPGAPC1

TP-1

PICKUP

TRIP

PICKUP

TRIP

PICKUP

TRIP

PICKUP

TRIP

Pickup SignalSO#1 (X100:10-11-12)

1) THERE ARE FOUR PULSE TIMERS AVAILABLE-ONE OF THEM IS USED FOR DEFAULT CONFIGURATIONS.ALL PULSE TIMERS INCLUDING TP-1 CAN BE MAPPEDFOR SPECIFIC APPLICATIONS USING SMT IN PCM TOOLS.

NOTE:

1)

Trip1 TP-1

GUID-B48DB1BC-8B98-4413-8D58-9980404EB9AD V1 EN

Figure 40: Common pickup signal



TRPPTRC1

PICKUP

TRIP

PICKUP

TRIP

TRPPTRC2

PICKUP

TRIP

PICKUP

TRIP

Trip SignalSO#2 (X100:13-14-15)

Trip(1)

Trip(2)

GUID-C56EFFDC-0D03-4F95-A632-4D1D33E2BB1A V1 EN

Figure 41: Common trip signal

The signal outputs from the IED are connected to give dedicated information onpickups and trips.

• Pickup of any protection function SO1 (X100:10-12)• Trip of any protection function SO2 (X100:13-15).

The TP-1 is a timer and used for setting the minimum pulse length for the outputs.



TAP CHANGER POSITION INDICATION

TPOSSLTC1

SIGN_BIT

BI1BI0

BI4BI5

BI2BI3

TPOSM

X130

12

3

45

6BI 4

BI 3

BI 2

BI 1

BI 8

BI 712

13

11

BCD BIT 5

BCD BIT 4

BCD BIT 3

BCD BIT 2

BCD BIT 1

BCD SIGN BIT

X110

GUID-3F69093C-4456-43C3-B7BC-CDEC293754EF V1 EN

Figure 42: Tap changer position indication

To increase the sensitivity of the stabilized differential function, the tap positioninformation from the tap changer is connected to the IED via the tap changer positionindication function 84T. 84T is connected to the binary inputs of the X130 BIO card.84T uses binary-coded methods to generate the integer value of the tap changer position.

3.4.3.4 Functional diagram for voltage protections

One overvoltage (59(2)), one undervoltage (27(2)), one residual overvoltage (59G(2))and one negative sequence undervoltage (47(2)) protections are provided for alarmpurpose only in default configuration. Users can select any or all of the protections fortripping using the Signal Matrix tool.



OVER & UNDER VOLTAGE PROTECTION

OR

59G(2)

PICKUPBLOCK

TRIP

U0>(1)ROVPTOV1

27(2)

PICKUPBLOCK

TRIP

3U<(1)PHPTUV1

59(2)

PICKUPBLOCK

TRIP

3U>(1)PHPTOV1

47(2)

PICKUPBLOCK

TRIP

U2>NSPTOV1

LED8

OVER & UNDER VOLTAGE PROTECTION

60(2)Pickup

GUID-E6DCBFA8-7FED-45E7-9044-A9D58F17301E V1 EN

Figure 43: Overvoltage and undervoltage protection

3.4.3.5 Functional diagram for optional ARC flash detection

Optional ARC flash detectors (AFD 1-3) are included in the standard configuration.The ARC flash detection offers individual function blocks for each of the three ARCsensors that can be connected to the IED. Each ARC protection function block has twodifferent operation modes, with or without the phase current check.



ARCSARC1

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODE

REM_FLT_ARC

IG

ARCSARC2

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODEREM_FLT_ARC

IG

ARCSARC3

TRIP

ARC_FLT_DET

IA, IB, IC

BLOCK

OPR_MODE

REM_FLT_ARC

IG

LED11

ARC(1)

ARC(2)

ARC(3)

GUID-14D00EE3-5F20-4E67-9174-675DB88AAA02 V1 EN

Figure 44: Arc flash detection

Trip signals from the ARC protection function blocks are connected to the Master TripLogic and also to the alarm LED 11 as a common arc flash detection.



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 theCT is correctly selected, a fast and reliable short circuit protection can be enabled.

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 settings of the IED should be defined in accordance with theCT performance as well as other factors.

Appropriate 'C' class CT should be used based on the total resistances of the CTsecondary circuit. If other accuracy class CTs are used then refer the followingdiscussions.

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 transformer oftype 5P10 has the accuracy class 5P and the accuracy limit factor 10. For protectivecurrent transformers, the accuracy class is designed by the highest permissiblepercentage composite error at the rated accuracy limit primary current prescribed forthe accuracy class concerned, followed by the letter "P" (meaning protection).

Table 19: 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

1MAC201230-MB A Section 4Requirements for measurement transformers


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 if thereare accuracy requirements for the metering functions (current metering, powermetering, and so on) of the IED.

The CT accuracy primary limit current describes the highest fault current magnitude atwhich the CT fulfils the specified accuracy. Beyond this level, the secondary current ofthe CT is distorted and it might have severe effects on the performance of theprotection IED.

In practise, the actual accuracy limit factor (Fa) differs from the rated accuracy limitfactor (Fn) and is proportional to the ratio of the rated CT burden and the actual 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 the accuracyclass 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 thermal anddynamic strength of the current measuring input of the IED is not exceeded. This isalways 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 theIED. For that reason, in practice, even a few times smaller nominal primary current canbe used than given by the formula.

Section 4 1MAC201230-MB ARequirements for measurement transformers


Recommended pickup current settingsIf Ikmin is the lowest primary current at which the highest set overcurrent stage is totrip, the pickup current should be set using the formula:

Current pickup value < 0.7 x (Ikmin / I1n)

I1n is the nominal primary current of the CT.

The factor 0.7 takes into account the protection IED inaccuracy, current transformererrors, and imperfections of the short circuit calculations.

The adequate performance of the CT should be checked when the setting of the highset stage overcurrent protection is defined. The trip time delay caused by the CTsaturation is typically small enough when the overcurrent setting is noticeably lowerthan Fa.

When defining the setting values for the low set stages, the saturation of the CT doesnot need to be taken into account and the pickup current setting is simply according tothe formula.

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

With definite time mode of operation, the saturation of CT may cause a delay that is aslong as the time the constant of the DC component of the fault current, when thecurrent is only slightly higher than the pickup current. This depends on the accuracylimit factor of the CT, on the remanence flux of the core of the CT, and on the trip timesetting.

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

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

Fa > 20*Current pickup value / I1n

The Current pickup value is the primary pickup current setting of the IED.

1MAC201230-MB A Section 4Requirements for measurement transformers


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.

A071142-ANSI V2 EN

Figure 45: Example of three-stage overcurrent protection

The maximum three-phase fault current is 41.7 kA and the minimum three-phase shortcircuit current is 22.8 kA. The actual accuracy limit factor of the CT is calculated to be59.

The pickup current setting for low-set stage (51P) is selected to be about twice thenominal current of the cable. The trip time is selected so that it is selective with thenext IED (not visible in the figure above). The settings for the high-set stage andinstantaneous stage are defined also so that grading is ensured with the downstreamprotection. In addition, the pickup current settings have to be defined so that the IEDoperates with the minimum fault current and it does not trip with the maximum loadcurrent. The settings for all three stages are as in the figure above.

For the application point of view, the suitable setting for instantaneous stage (50P-3) inthis 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 the IEDsetting is considerably below the Fa. In this application, the CT rated burden couldhave been selected much lower than 10 VA for economical reasons.

Section 4 1MAC201230-MB ARequirements 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 20: Inputs for phase currents

Terminal DescriptionX120-1, 2 IA2

X120-3, 4 IB2

X120-5, 6 IC2

X120-7, 8 IA

X120-9, 10 IB

X120-11, 12 IC

5.1.1.2 Ground current

Table 21: Inputs for ground current

Terminal DescriptionX120-13, 14 IG

5.1.2 Auxiliary supply voltage inputThe auxiliary voltage of the IED is connected to terminals X100/1-2. At DC supply,the positive lead is connected to terminal X100-1. The permitted auxiliary voltagerange is marked on the LHMI of the IED on the top of the HMI of the plug-in unit.

1MAC201230-MB A Section 5IED physical connections


Table 22: 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, to unlatchoutput contacts, to trigger the digital fault recorder or for remote control of IEDsettings.

Table 23: Binary input terminals X110-1...13Binary input terminals X110-1...13

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, +

X110-8 BI5, +

X110-9 BI5, -

X110-9 BI6, -

X110-10 BI6, +

X110-11 BI7, +

X110-12 BI7, -

X110-12 BI8, -

X110-13 BI8, +

Table 24: Optional binary input terminals X130-1...9Binary input terminals X130-1...9

Terminal DescriptionX130-1 BI1, +

X130-2 BI1, -

X130-2 BI2, -

X130-3 BI2, +

X130-4 BI3, +


Section 5 1MAC201230-MB AIED physical connections


Terminal DescriptionX130-5 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 fibers are connected to inputs X13, X14 andX15, see the terminal diagrams.For further information, see arc flash detector.

The IED is provided with connection sockets X13, X14 and X15 only ifthe optional communication module with light sensor inputs has beeninstalled. If the arc flash detector option is selected when ordering anIED, the light sensor inputs are included in the communication module.

Table 25: 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 signals from allthe protection stages are routed to PO3 and PO4.



Table 26: Output contacts

Terminal DescriptionX100-6 PO1, NO

X100-7 PO1, NO

X100-8 PO2, NO

X100-9 PO2, NO

X100-15 PO3, NO (TCM resistor)

X100-16 PO3, NO

X100-17 PO3, NO

X100-18 PO3 (TCM1 input), NO

X100-19 PO3 (TCM1 inputr), NO

X100-20 PO4, NO (TCM 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 slot X110 orSO1, SO2 and SO3 in slot X130 (optional) can be used for signalling on pickup andtripping of the IED. On delivery from the factory, the pickup and alarm signals from allthe protection stages are routed to signalling outputs.

Output contacts of slot X110 are optional. Output contacts of slot X130 are available inthe optional BIO module (BIOB02A).

Table 27: 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

Section 5 1MAC201230-MB AIED physical connections




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 of theprotection IED. Under normal operating conditions, the IED is energized and thecontact is closed (X100/3-5). When a fault is detected by the self-supervision system orthe auxiliary voltage is disconnected, the output contact drops off and the contactcloses (X100/3-4).

Table 30: IRF contact

Terminal DescriptionX100-3 IRF, common

X100-4 Closed; IRF, or Vaux disconnected

X100-5 Closed; no IRF, and Vaux connected



74

Section 6 Glossary

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

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

ANSI American National Standards InstituteBI Binary inputBO Binary outputCT Current transformerDFR Digital fault recorderDNP3 A distributed network protocol originally developed by

Westronic. The DNP3 Users Group has the ownership of theprotocol and assumes responsibility for its evolution.

EMC Electromagnetic compatibilityGOOSE Generic Object Oriented Substation EventHMI Human-machine interfaceIEC 61850 International standard for substation communication and

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

periods. Each server connected to the Internet is assigned aunique IP address that specifies the location for the TCP/IPprotocol.

LAN Local area networkLC Connector type for glass fiber cableLCD Liquid crystal displayLED Light-emitting diodeLHMI Local human-machine interfaceModbus A serial communication protocol developed by the Modicon

company in 1979. Originally used for communication in PLCsand RTU devices.

1MAC201230-MB A Section 6Glossary


PCM600 Protection and Control IED ManagerRJ-45 Galvanic connector typeTCP/IP Transmission Control Protocol/Internet ProtocolWAN Wide area networkWHMI Web human-machine interface

Section 6 1MAC201230-MB AGlossary


77

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RET615 Transformer Protection and Control ANSI ...Section 2RET615 overview 2.1 OverviewRET615 is a dedicatedtransformer protection and control IED (intelligent electronic device) for