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Protection Systems

Answers for infrastructure.

SIPROTEC 5 Line ProtectionDevices 7SA8, 7SD8, 7SL8, 7VK8, 7SJ86Catalog SIPROTEC 5.02 Edition 2

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2 SIPROTEC 5 Line Protection, Devices 7SA8, 7SD8, 7SL8, 7VK8, 7SJ86 Siemens SIPROTEC 5.02 Edition 2

System catalog

The system catalog describes the SIPROTEC 5 system features.

Device catalogs

The device catalogs describe device-specific features such asfunctional scope, hardware and applications.

Device manuals

The device manuals describe the functions and applications ofa specific SIPROTEC 5 device. The printed manual and the onlinehelp for the device have the same informational structure.

Hardware manual

The hardware manual describes the hardware componentsand device combinations of the SIPROTEC 5 device family.

Operating manual

The operating manual describes the basic principles andprocedures for operating and assembling the devices of theSIPROTEC 5 device family.

Communication protocol manuals

The communication protocol manuals include a description ofspecific protocols for communication within the SIPROTEC 5device family and to higher-level control centers.

Product information

The product information includes general information aboutdevice installation, technical data, limiting values for input andoutput modules, and conditions when preparing for operation.

This document is delivered with each SIPROTEC 5 device.DIGSI 5 online help

The DIGSI 5 online help contains a help package for DIGSI 5 andCFC. The help package for DIGSI 5 includes a description of thebasic operation of software, the DIGSI principles and editors. Thehelp package for CFC includes an introduction to CFC program-ming, basic examples of CFC handling, and a reference chapterwith all CFC blocks available for the SIPROTEC 5 device family.

Online help devices

The online help for devices has the same information structureas the device manual.

SIPROTEC 5 / DIGSI 5 Tutorial

The tutorial on the DVD contains brief information aboutimportant product features, more detailed information about theindividual technical areas, as well as operating sequences withtasks based on practical operation and a brief explanation.

System catalog

Manuals

Devicemanuals

Device catalogsCommunication

protocol manualsProduct

information

SIP

G-0

043.E

N.a

i

Hardwaremanual

Operatingmanual

Online help DIGSI 5Online help devices

SIPROTEC 5/DIGSI 5Tutorial

SoftwareCatalogs

Overview of documentation for the SIPROTEC 5 system

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Introduction 5

Line Protection Devices 6

Overview 6

Distance Protection Devices 7

Applications, application examples, functions andapplication templates

Distance protection 7SA84 7Distance protection 7SA86 10Distance protection 7SA87 14

Differential Protection Devices 18

Applications, application examples, functions and

application templates

Differential protection 7SD84 18Differential protection 7SD86 21Differential protection 7SD87 25

Differential and Distance Protection Devices 29

Applications, application examples, functions andapplication templates

Differential protection and distance protection 7SL86 29Differential protection and distance protection 7SL87 33

Circuit-Breaker Management 37



Circuit-breaker management device 7VK87 37

Overcurrent Protection for Overhead Line 40



Overcurrent protection for line 7SJ86 40

Description of the Device Functions 43

Functional integration, protection 43Control & automation 56Monitoring, field data acquisition & recording 57Recorder 58Communication 59Cyber Security, test 60

Overview of the Standard Variants 61

Legal Notice 63

The products and systems described in this catalogare manufactured and sold according to a certifiedmanagement system (acc. to ISO 9001, ISO 14001and BS OHSAS 18001).DNV Certificate No.: 92113-2011-AHSO-GER-TGAand Certificate No.: 87028-2010-AHSO-GER-TGA.

3SIPROTEC 5 Line Protection, Devices 7SA8, 7SD8, 7SL8, 7VK8, 7SJ86 Siemens SIPROTEC 5.02 Edition 2

Contents

SIPROTEC 5 Line Protection

Devices 7SA8, 7SD8,7SL8, 7VK8, 7SJ86Energy Automation

Catalog SIPROTEC 5.02 Edition 2

Invalid: Catalog SIP 5.02 V1.0

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Editorial

SIPROTEC has been a recognized brand leader in digitalprotection and field devices on the energy market for decades.The Siemens high-performance SIPROTEC devices cover theentire power spectrum and can be implemented in a wide rangeof fields from power generation to very high voltage transmis-

sion and distribution network applications.Smart automation for transmission grids is the Siemensresponse to the present and future challenges to achieve areliable and efficient energy supply. SIPROTEC 5 is an activecomponent of the energy-efficient smart grid and animportant building block in the complex distributed energysupply systems and networks solutions.

The next generation of SIPROTEC devices, SIPROTEC 5, is basedon the proven features of SIPROTEC 4 to provide you with a new,modern platform including both hardware and software.This platform offers an excellent solution to the challengesassociated with evolving grid structures and workflows.The quality, reliability and proven functions of the former

system have been preserved. Innovative approaches includingholistic workflow, safety and security, and network stabilitymonitoring (PMU functionality) have been added.

The pioneering system architecture places you in full controlof switchgear communications. A powerful, reliable communica-tion infrastructure, combined with the flexible engineeringcapabilities serves as the basis for monitoring and controlling ofdistributed, decentralized systems. Seamless communicationsis the central component of the SIPROTEC 5 system architectureto provide flexibility, safety and security in the automateddistributed network solutions.

With SIPROTEC 5, you are at the beginning of a new generationof intelligent, digital multifunction field devices. The new oper-

ating tool DIGSI 5 offers individual support for you handlesyour specific workflow requirements, from system designto device selection and testing, covering the entire device life-cycle. The new tool offers cost savings over the entire lifecyclewithout compromising safety and system availability.

With the new SIPROTEC 5 generation, you are well equippedto meet the growing economic and reliability demandsimposed on your networks. The philosophy of SIPROTEC 5is reflected in the modularity and flexibility of its hardware andsoftware components. Perfectly tailored fit the custom fitfor your switchgear and specifications for the application andstandardization of energy automation.

Ingo Erkens

General ManagerInfrastructure and Cities SectorSmart Grid DivisionEnergy Automation

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Introduction

SIPROTEC 5 Line protection devices

SIPROTEC 5 line protection devices are part of the modularsystem of SIPROTEC 5. They support all SIPROTEC 5 systemfeatures, and can be used individually as well as universallyin the framework of system solutions. In the following, thespecific properties of the SIPROTEC 5 line protection devices are

described. The description of the SIPROTEC 5 system features isfound in the system catalog.

In the system catalog, the following properties of SIPROTEC 5 areintroduced in detail:

The SIPROTEC 5 system

Areas of use

Hardware

Engineering

Communication

IEC 61850 Simply usable

Test and diagnostics

Safety concept DIGSI 5

The system catalog can be ordered free of chargefrom your Siemens contact partner under order numberE50001-K4605-A011-A1-7600.

SIPROTEC 5 line protection devices are based on the distanceprotection and differential protection principles. They protectoverhead lines and cables of all voltage levels with the highestpossible degree of selectivity and security. A large number ofadditional protection and automation functions makes use in allareas of line protection possible.

The devices also contain important auxiliary functions thatare necessary for safe network operation today. This includesfunctions for control, measurement and monitoring. The largenumber of communication interfaces and communicationprotocols satisfies the requirements of communication-basedselective protection, as well as automated operation.

Commissioning and maintenance work can be completed safely,quickly and thus cost-effectively with high-performance testfunctions. Because of a modular structure design, SIPROTEC 5line protection devices can always be flexibly adapted to specificrequirements.

SIPROTEC 5 system catalog

Order No. E50001-K4605-A011-A1-7600

Answers for energy.

Energy Automation

Cataog SIP 5.01 V1.

SIPROTEC 5 System OverviewProtection, Automation and Monitoring

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Features

The device types are defined by their main protection functionsand by essential distinguishing features.

Definition of device types based on designation

For devices with flexible configurability of the hardware quantitystructure, you can select various standard variants whenordering. Expandability through supplemental modules allowsfor individual adaptation to specific applications such as moreanalog channels for breaker-and-a-half schemes, or more binarycontacts (see Overview of the standard variants, page 58).

Function library and application templates

A common function library makes all protection, automation,monitoring and auxiliary functions for the SIPROTEC 5 lineprotection devices available. Thus, the same functions are trulythe same for all devices. Once established, configurations canbe transferred from device to device. This results in substantiallyreduced engineering effort.

On the following pages of this catalog, the selection of functionsavailable from the library is shown in table format. Pre-definedtemplates are available in DIGSI for standard applications. Thesetemplates contain basic configurations, required functions anddefault settings for standard applications.

7 XX YY

Main protection:

7 SA Distance protection

7 SD Differential protection

7 SL Distance and differential protection

7 SJ Overcurrent protection7 VK Circuit-breaker management

Essential distinguishing features:

7 84 exclusively 3-pole tripping Hardware quantity structure fixed

7 86 exclusively 3-pole tripping Hardware quantity structure flexibly configurable

7 87 1- and 3-pole tripping Hardware quantity structure flexibly configurable

Type designation 7SA84 7SA86 7SA87 7SD84 7SD86 7SD87 7SL86 7SL87 7VK87 7SJ86

Distance protection

Differential protection

Overcurrent protection for overhead line

Circuit-breaker management

3-pole trip command

1-/3-pole trip command

Flexibly configurable hardware

Table 1 Overview of the various distinguishing features of the main protection types

7SS8*

6MD8

7KE8*

7SD87

7SL87

7VK87

7SA87

7UT8*

7SJ86

7SS8*

7KE85*

7SA84

7SA86

7SJ86

7SD84

7SD86

7SL86

7UT8*

7SJ86

Distribution

Generation

Fig. 1 Areas of application of the SIPROTEC 5 devices in the power transmission system

Overview

Line Protection Devices

XX

Main protection functions

Distinguishing features

YY7

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Distance protection 7SA84 Applications

Distance Protection 7SA

Properties

Main protection function: Distance protection

Tripping: 3-pole, min. tripping time 25 ms

Inputs and outputs: 4 current transformers, 4 voltage transform-ers, 5 binary inputs, 8 binary outputs(1 standard, 7 fast relays). TheI/O quantity structure for 7SA84 is fixed;it cannot be changed with other modules ofthe SIPROTEC 5 modular system

Width of housing: 1/319"

Line protection for all voltage levels with 3-pole tripping

Selective protection of overhead lines and cables with single-and multi-ended feeders

Time-graded backup protection for differential protectionequipment

Suitable for radial, ring or any type of meshed systems of anyvoltage level with grounded, compensated or isolated neutralpoint

Main protection function: 6-system distance protection

Various additional functions

Protection of lines with capacitive series compensation

Suitable for protection of long and short lines

Adaptive power-swing blocking

Detection of CT saturation for fast tripping and high accuracyat the same time

Secure serial protection data communication, also over greatdistances and all available physical media (fiber-optic cable,2-wire connections and communication networks)

Control of switching devices

Measurement of operating values and synchrophasors Powerful fault recording

Consistent monitoring concept

Auxiliary functions for simple tests and commissioning.

Applications

The distance protection 7SA84 is a universal protection, controland automation device on the basis of the SIPROTEC 5 system.Due to its high flexibility, it is suitable as selective protectionequipment for overhead lines and cables with single- and multi-ended infeeds as well as time-graded backup protection forcomparison protection schemes. The device is delivered with theaforementioned number of analog and binary inputs and out-

puts. Apart from that, the device supports all SIPROTEC 5 systemcharacteristics. It enables future-oriented system solutions withhigh investment security and low operating costs.

Functions

Table 2 on page 9 shows all functions that are available in the7SA84. Basically, all functions can be configured freely withDIGSI 5. For the application of some of the functions, yourequire the appropriate number of free function points withinthe device. The function point calculator in the online configura-tor provides support in determining the required number offunction points for your device.

Application templates

Application templates are available in DIGSI for standardapplications. They comprise all basic configurations and defaultsettings. Table 2 on page 9 shows the functional scope andthe function point requirement for the application templatesdescribed. The following application templates are available:

7SA84 basic distance protection

Distance protection with 3-pole tripping for networks with allkinds of neutral point treatment

Non-directional overcurrent protection as emergency orbackup function

Teleprotection functions

Fault locator.

7SA84 distance protections for compensated/isolated systems

with AR

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesand cables in networks with compensated and isolated neutral

point.

7SA84 distance protection for overhead line for grounded

systems, with AR

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with grounded neutral point (Fig. 3).

7SA84 distance protection with MHO distance zone

characteristics for overhead line for grounded systems, with AR

Comprises the basic functions with MHO distance zonecharacteristics as well as additional functions that are typicallyrequired for the protection of overhead lines in networks withgrounded neutral point.

Fig. 2 Distance protection 7SA84

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Distance protection 7SA84 Application examples


Busbar with line feeder

V4

I1

I2

I3

I4

V1

V2

V3

CI

FG Circuit breaker

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

QA

Power line

Com.

52

FG Function group

MP Measuring point

PI Protection interface

CI Communication interface

CB Circuit breaker

BI Binary input

BO Binary output

FG Line

27 59 81

50/51

21 67N

68

PI

FL85

21 Distance protection

25 Synchrocheck, synchronizing function

27 Undervoltage protection

50/51 Overcurrent protection, phases, ground

50HS High speed instantaneous overcurrent protection

50BF Circuit-breaker failure protection

59 Overvoltage protection

67N Directional overcurrent protection for ground-faults

68 Power-swing blocking

79 Automatic reclosing

81 Frequency protect ion

85 Teleprotection schemesCtrl Control

FL Fault locator

Teleprotection (85) can use

conventional signalling or serial

protection interface

V-1ph

V-3ph

25

50BF

79

Ctrl

CB BIBO

I-3phV-3ph

I-3ph

50HS

7SA84

Fig. 3 Application example: Distance protection for overhead line

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Distance protection 7SA84 Functions, application templates



ANSI Function Abbr. Ava

ilable

in7

SA84

DIS

Basic

DIS

comp./isol.

systems,withAR

DIS

overheadline,

groundedsystems

DIS

MHO,overhead

line

,grounded

systems

Protection functions for 3-pole tripping 3-pole

21, 21N Distance protection Z<

25 Synchrocheck, synchronizing function Sync

27 Undervoltage protection, 3-phase V<

27 Undervoltage protection, positive-sequence system V1<

27 Undervoltage protection, 1-phase, Vx * Vx<

32, 37 Power protection active/reactive power P, Q

46 Negative-sequence system overcurrent protection with direction I2>, (V2,I2)

49 Thermal overload protection , It

50HS High speed instantaneous overcurrent protection I>>>

50BF Circuit-breaker failure protection CBFP

50/51 Overcurrent protection, phases I>,Ip>

50N/51N Overcurrent protection, ground faults IN>, INP>

59 Overvoltage protection, 3-phase V>

59 Overvoltage protection, positive-sequence system V1>

59 Overvoltage protection, compounding V1comp>

59 Overvoltage protection, negative-sequence system V2>

59N Overvoltage protection, zero-sequence system V0>

59 Overvoltage protection, 1-phase, Vx * Vx>

67 Directional overcurrent protection, phases I>, Ip (V,I)

67N Directional overcurrent protection for ground faults IN>, INP (V,I)

67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral * IN>, (V,I)

68 Power-swing blocking Z/t

74TC Trip-circuit supervision TCS

78 Out-of-step protection Z/t

79 Automatic reclosing AR

81O Overfrequency protection f>

81U Underfrequency protection f<

85/21 Teleprotection for distance protection

85/27 Weak or no infeed: Echo and tripping WI

85/67N Teleprotection for directional ground-fault protection

86 Lockout

FL Fault locator FL

FL Fault locator, two-ended measurement* FL-two

PMU Synchrophasor measurement PMU

Operational measured values, standard

Measured values, extended: Min, Max, Avg (function points per type)

Switching-statistic counters

CFC standard

CFC arithmetic

CFC switching sequences

Inrush current detection

External trip initiation

Control for 4 switching devices

Control for more than 4 switching devices (function points per switching device)

Fault recording of analog and binary signals

Monitoring and supervision

Protection interface, serial

Function points: 0 125 225 225

* Currently under development

Table 2 7SA84 functions, application templates

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Properties



Inputs and outputs:

Hardware flexibility:

12 predefined standard variants with 4/4 or8/8 current/voltage transformers, 5 to 31

binary inputs,8 to 46 binary outputs or flexibly adjustableI/O quantity structure within the scope of theSIPROTEC 5 modular system

Width of housing: 1/3 19" to 1/1 19"


Very short tripping time

Also used in switchgear with breaker-and-a-half scheme







Suitable for the protection of long and short lines



Secure serial protection data communication, also over greatdistances and all available physical media (fiber-optic cable,

2-wire connections and communication networks) Control of switching devices

Measurement of operating values and synchrophasors

Powerful fault recording


Auxiliary functions for simple test and commissioning.

Applications

The distance protection 7SA86 is a universal protection, controland automation device on the basis of the SIPROTEC 5 system.Due to its high flexibility, it is suitable as selective, fast protec-tion equipment for overhead lines and cables with single- and

multi-ended infeeds as well as time-graded backup protectionfor comparison protection schemes. The device supports allSIPROTEC 5 system characteristics. It enables future-orientedsystem solutions with high investment security and low operat-ing costs.

Functions



Application templates are available in DIGSI for standardapplications. They comprise all basic configurations and defaultsettings. Table 3 on page 13 shows the functional scope andthe function point requirement for the application templatesdescribed. The following templates are available:





Fault locator.

7SA86 distance protections for compensated/isolated systems

with AR

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesand cables in networks with compensated and isolated neutral

point.


systems, with AR



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Comprises the basic functions with MHO distance zonecharacteristics as well as additional functions that are typicallyrequired for the protection of overhead lines in networks withgrounded neutral point


systems, with AR for applications with breaker-and-a-half

scheme

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with grounded neutral point; prepared for applica-tions with breaker-and-a-half schemes (Fig. 6).



for applications with breaker-and-a-half schemes

Comprises the basic functions with MHO distance zonecharacteristics as well as additional functions that are typicallyrequired for the protection of overhead lines in networks

with grounded neutral point; prepared for applications withbreaker-and-a-half schemes (Fig. 6).



V4

I1

I2

I3

I4

V1

V2

V3

CI

FG Circuit breaker

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

QA

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

FG Line

27 59 81

50/51

21 67N

68

PI

FL85







59 Overvoltage protection67N Directional overcurrent protection for ground-faults




85 Teleprotection schemes

Ctrl Control

FL Fault locator




V-1ph

V-3ph

25

50BF

79

Ctrl

CBBI

BO

I-3phV-3ph

I-3ph

50HS

7SA86

SIP5

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V1

V2

V4

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

A-QA

V3

I1

I2

I3

I4

V1V2

V3

I1

I2

I3

I4

V4

MP

CT-3ph 2

Power line 1

Busbar 1

Busbar 2

B-QA

C-QA

Power line 2

Com.

CI

MP

VT-1ph 2

52

52

52

FG Function group

MP Measuring point



CB Circuit breaker

Summation of currents

BI Binary input

BO Binary output

27 59 81

50/51

21 67N

68

PI

FL85

FG Line











81 Frequency protection


87STUB STUB Differential protection

Ctrl ControlFL Fault locator




87STUB

FG Circuit breaker B-QA

FG Circuit breaker A-QA

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

I-3ph

V-3ph

50HS

7SA86

Fig. 6 Application example: Distance protection for overhead line with breaker-and-a-half scheme

SIP5

G-0034a

.EN

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ANSI Function Abbr. Available

in7SA86

DIS

Basic

DIS

comp./isol.

sys

tems,withAR

DIS

overheadline,

gro

undedsystems

DIS

MHO,overhead

line,grounded

sys

tems

DIS

overheadline,

gro

undedsystems

bre

aker-and-a-half

DIS

MHO,overhead

line

,groundedsystems

bre

aker-and-a-half


Hardware quantity structure expandable I/O


25 Synchrocheck, synchronizing function Sync 2 227 Undervoltage protection, 3-phase V<




46 Negative-sequence system overcurrent protection with direction I2>, U2/I2

49 Thermal overload protection


50BF Circuit-breaker failure protection CBFP 2 250/51 Overcurrent protection, phases I>, Ip>

50N/51N Overcurrent protection, ground faults IN>, INP> 59 Overvoltage protection, 3-phase V>








67Ns Sensitive ground-fault detection for systems with resonant orisolated neutral *

IN>, (V,I)




79 Automatic reclosing AR 2 281O Overfrequency protection f>



85/27 Weak or no infeed: Echo and tripping WI


86 Lockout

87STUB STUB differential protection (for breaker-and-a-half schemes) I

FL Fault locator FL




Measured values, expanded: Min, Max Middle(function points per type)


CFC standard CFC arithmetic

CFC switch sequences




Control for more than 4 switching devices (function pointsper switching device)




Function points: 0 125 225 225 375 375* Currently under development


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Properties


Tripping: 1- and 3-pole, min. tripping time 9 ms

Inputs and outputs:


12 predefined standard variations with 4/4or 8/8 current/voltage transformers, 5 to31 binary inputs, 8 to 46 binary outputs orflexibly adjustable I/O quantity structurewithin the scope of the SIPROTEC 5 modularsystem


Line protection for all voltage levels with 1- and 3-pole tripping

Very short tripping time

Also used in switchgear with breaker-and-a-half schemes







Suitable for protection of long and short lines



Secure serial protection data communication, also over greatdistances and all available physical media (fiber-optic cable,

2-wire connections and communication networks) Control of switching devices





Applications

The distance protection 7SA87 is a universal protection, controland automation device on the basis of the SIPROTEC 5 system.Due to its high flexibility, it is suitable as selective, fast protec-tion equipment for overhead lines and cables with single- andmulti-ended infeeds as well as time-graded backup protection

for comparison protection schemes. The device supports allSIPROTEC 5 system characteristics. It enables future-orientedsystem solutions with high investment security and low operat-ing costs.

Functions





Distance protection with 1-/3-pole tripping for networks withall kinds of neutral point treatment



Fault locator.

7SA87 distance protection for compensated/isolated systems

with AR

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with compensated and isolated neutral point.


systems, with AR



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7SA87 distance protection for overhead line in grounded

systems, with AR for applications with breaker-and-a-half

schemes

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with grounded neutral point; prepared for applica-

tions with breaker-and-a-half schemes (Fig. 9).


V4

I1

I2

I3

I4

V1

V2

V3

CI

FG Circuit breaker

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

QA

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

FG Line

27 59 81

50/51

21 67N

68

PI

FL85







59 Overvoltage protect ion






Ctrl Control

FL Fault locator




V-1ph

V-3ph

25

50BF

79

Ctrl

CBBI

BO

I-3phV-3ph

I-3ph

50HS

7SA87


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N

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V1

V2

V4

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

A-QA

V3

I1

I2

I3

I4

V1V2

V3

I1

I2

I3

I4

V4

MP

CT-3ph 2

Power line 1

Busbar 1

Busbar 2

B-QA

C-QA

Power line 2

Com.

CI

MP

VT-1ph 2

52

52

52

FG Function group

MP Measuring point

PI Protect ion interface

CI Communicat ion interface

CB Circuit breaker


BI Binary input

BO Binary output

27 59 81

50/51

21 67N

68

PI

FL85

FG Line














Ctrl Control

FL Fault locator




87STUB



25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

I-3ph

V-3ph

50HS

7SA87

Fig. 9 Application example: Distance protection for overhead line with breaker-and-a-half scheme

SIP5

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in7SA87

DIS

Basic

DIS

comp./isol.

sys

tems,withAR

DIS

overheadline,

gro

undedsystems

DIS

overheadline,

gro

undedsystems

bre

aker-and-a-half





25 Synchrocheck, synchronizing function Sync 2







50 HS High speed instantaneous overcurrent protection I>>>

50BF Circuit-breaker failure protection CBFP 250/51 Overcurrent protection, phases I>, IP














79 Automatic reclosing AR 2




85/27 Weak or no infeed infeed: Echo and tripping WI


86 Lockout


FL Fault locator FL




Measured values, extended: Min, Max, Avg (function points per type Switching-statistic counters

CFC standard

CFC arithmetic









Function points: 0 150 250 425* Currently under development


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Differential protection 7SD84 Applications

Differential Protection 7SD

Properties

Main protection function: Differential protection


Inputs and outputs: 4 current transformers,4 voltage transformers,

5 binary inputs, 8 binary outputs(1 standard, 7 fast relays)The I/O quantity structure for 7SD84 is fixed;it cannot be changed with the other modulesof the SIPROTEC 5 modular system.

Width of housing: 1/3 19"


Phase-selective protection of overhead lines and cables withsingle- and multi-ended infeeds of all lengths with 2 line ends

Transformers and compensating coils in the protection zoneare possible

Suitable for radial, ring or any type of meshed systems of any

voltage level with grounded, compensated or isolated neutralpoint


Main protection function is differential protection withadaptive algorithm for maximum sensitivity and stability evenat different CT errors, CT saturation and capacitive chargingcurrents

Directional backup protection and various additional functions

Secure serial protection data communication, also over greatdistances, and all available physical media (fiber-optic cable,2-wire connections and communication networks)






Applications

The differential protection device 7SD84 is a universalprotection, control and automation device on the basis of theSIPROTEC 5 system. Due to its high flexibility, it is suitable asselective protection equipment for overhead lines and cableswith single- and multi-ended infeeds with two ends. Transform-ers and compensating coils in the protection zone are also pos-sible. The device is delivered with the aforementioned numberof analog and binary inputs and outputs. Apart from that, thedevice supports all SIPROTEC 5 system characteristics. It enablesfuture-oriented system solutions with high investment securityand low operating costs.

Functions

Table 5 on page 20 shows all functions that are available in the7SD84. Basically, all functions can be configured freely withDIGSI 5. For the application of some of the functions, yourequire the appropriate number of free function points withinthe device. The function point calculator in the online configura-tor provides support in determining the required number offunction points for your device.



7SD84 basic differential protection

Phase-selective differential protection with 3-poletripping


Fault locator.

7SD84 differential protection for overhead line

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overheadlines: Circuit-breaker failure protection, AR, synchronizationfunction, voltage and frequency protection, thermal overloadprotection (Fig. 11).

7SD84 differential protection for overhead line with

transformer in the protection range

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overheadlines: Circuit-breaker failure protection, AR, synchronizationfunction, voltage and frequency protection, thermal overloadprotection

Considers a transformer in the protection range.

Fig. 10 Differential protection device 7SD84

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Differential protection 7SD84 Application examples



V4

I1

I2

I3

I4

V1

V2

V3

CI

FG Line FG Circuit breaker

MP

VT-1ph 1

27 59 81

FL

50/51

MP

CT-3ph 1

MP

VT-3ph 1

87L

PI

QA


27 Undervoltage protect ion




59 Overvoltage protect ion



87L Differential protection, line

Ctrl Control

FL Fault locator

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

V-1ph

V-3ph

25

50BF

79

Ctrl

CB BIBO

I-3ph

I-3ph

V-3ph

50HS

7SD84

Fig. 11 Application example: Line differential protection for overhead line

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Differential protection 7SD84 Functions, application templates




ilable

in7

SD84

DIFFBasic

DIFFOverheadline

DIFFOverheadline

withtransformer


87L Differential protection, line I

25 Synchrocheck, synchronizing function Sync








50BF Circuit-breaker failure protection CBFP

50/51 Overcurrent protection, phases I>, IP>









67Ns Sensit ive ground-fault detection for systems with resonant or isolated neutral * IN>, (V,I)


79 Automatic reclosing AR



86 Lockout

87L/87T Option for line differential protection: including power transformer I

Option for line differential protection:charging-current compensation

Broken-wire detection for differential protection

FL Fault locator FL

FL Fault locator, two-ended measurement * FL-two



Measured values, extended: Min, Max, Avg (function points per type)


CFC standard

CFC arithmetic









Function points: 0 175 275



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Properties



Inputs and outputs: 12 predefined standard variants with 4/4or 8/8 current/voltage transformers, 5 to31 binary inputs, 8 to 46 binary outputs orflexibly adjustable I/O quantity structurewithin the scope of the SIPROTEC 5 modularsystem



Phase-selective protection of overhead lines and cables withsingle- and multi-ended infeeds of all lengths with up to 6 lineends





Main protection function is differential protection withadaptive algorithm for maximum sensitivity and stability evenat different CT errors, CT saturation and capacitive chargingcurrents




Measurement of operating values and synchrophasors Powerful fault recording



Applications

The differential protection device 7SD86 is a universalprotection, control and automation device on the basis of theSIPROTEC 5 system. Due to its high flexibility, it is suitable asselective protection equipment for overhead lines and cableswith single- and multi-ended infeeds with up to 6 ends.Transformers and compensating coils in the protection zone arealso possible. The device is delivered with the aforementioned

number of analog and binary inputs and outputs. Apart fromthat, the device supports all SIPROTEC 5 system characteristics.It enables future-oriented system solutions with high investmentsecurity and low operating costs.

Functions





Phase-selective differential protection with 3-pole tripping


Fault locator.


Comprises the basic functions as well as additional functionsthat are typically required for the protection of overheadlines: Circuit-breaker failure protection, AR, synchronizationfunction, voltage and frequency protection, thermal overloadprotection (Fig. 13).

7SD86 differential protection for overhead line with transformerin the protection range

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overheadlines: Circuit-breaker failure protection, AR, synchronizationfunction, voltage and frequency protection, thermal overloadprotection.



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7SD86 differential protection for overhead line, for applications

with breaker-and-a-half schemes

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overheadlines: Circuit-breaker failure protection, AR, synchronizationfunction, voltage and frequency protection, thermal overload

protection.

Prepared for applications with breaker-and-a-half schemes(Fig. 14).


V4

I1

I2

I3

I4

V1

V2

V3

CI


MP

VT-1ph 1

27 59 81

FL

50/51

MP

CT-3ph 1

MP

VT-3ph 1

87L

PI

QA










Ctrl Control

FL Fault locator

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

V-1phV-3ph

25

50BF

79

Ctrl

CBBI

BO

I-3ph

I-3ph

V-3ph

50HS

7SD86


S

IP5

G-0037a.E

N

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V1

V2

V4

FG Line

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

A-QA

V3

I1

I2

I3

I4

V1V2

V3

I1

I2

I3

I4

V4

MP

CT-3ph 2

Power line 1

Busbar 1

Busbar 2

B-QA

C-QA

27 59 81

50/51

FL87L

PI

Power line 2

Com.

CI

MP

VT-1ph 2

52

52

52






59 Overvoltage p rotection





Ctrl Control

FL Fault locator

FG Function group

MP Measuring point



CB Circuit breaker


BI Binary input

BO Binary output

87STUB



25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

I-3ph

V-3ph

7SD86

50HS

Fig. 14 Application example: Line differential protection for overhead line with breaker-and-a-half scheme

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.EN

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ilable

in7

SD86

DIFFBasic

DIFFOverheadline

DIFFOverheadline

withtransformer

DIFFOverheadline,

breaker-and-a-half



87L Line differential protection for 2 line ends Z<

87L Line differential protection for 3 to 6 line ends I








50 HS High speed instantaneous overcurrent protection I>>>

50BF Circuit-breaker failure protection CBFP 2

50/51 Overcurrent protection, phases I>, IP>














86 Lockout

87L/87T Option for line differential protection: including power transformer I

Option for line dif ferential protection:charging-current compensation



FL Fault locator FL




Measured values, expanded: Min, Max, Avg (function points per type)


CFC standard CFC arithmetic











Table 6 7SD86 functions, application templates

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Properties


Tripping: 1- and 3-pole, min. tripping time 9 ms

Inputs and outputs: 12 predefined standard variants with 4/4or 8/8 current/voltage transformers, 5 to

31 binary inputs, 8 to 46 binary outputs orflexibly adjustable I/O quantity structurewithin the scope of the SIPROTEC 5 modularsystem


Line protection for all voltage levels with 1- and 3-pole tripping

Phase-selective protection of overhead lines and cables withsingle- and multi-ended infeeds of all lengths with up to 6 lineends





Main protection function is differential protection with adap-tive algorithm for maximum sensitivity and stability even inthe most varied transformer errors, CT saturation and capaci-tive charging currents


Secure serial protection data communication, also over greatdistances and all available physical media (fiber-optic cable,2-wire connections and communication networks)






Applications

The differential protection device 7SD87 is a universalprotection, control and automation device on the basis of theSIPROTEC 5 system. Due to its high flexibility, it is suitable asselective protection equipment for overhead lines and cableswith single- and multi-ended infeeds with up to 6 ends.Transformers and compensating coils in the protection zone are

also possible. The device is delivered with the aforementionednumber of analog and binary inputs and outputs. Apart fromthat, the device supports all SIPROTEC 5 system characteristics.It enables future-oriented system solutions with high investmentsecurity and low operating costs.

Functions





Phase-selective differential protection with 1- and 3-poletripping


Fault locator.


Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead lines:Circuit-breaker failure protection, synchronization function,voltage and frequency protection, thermal overload protection(Fig. 16).

7SD87 differential protection for overhead line with transformer

in the protection range

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead lines:Breaker failure protection, AR, synchronization function, volt-age and frequency protection, thermal overload protection.



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7SD87 differential protection for overhead line, for applications

with breaker-and-a-half schemes

Comprises the basic functions as well as additional functions thatare typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltageand frequency protection, thermal overload protection.



V4

I1

I2

I3

I4

V1

V2

V3

CI


MP

VT-1ph 1

27 59 81

FL

50/51

MP

CT-3ph 1

MP

VT-3ph 1

87L

PI

QA










Ctrl Control

FL Fault locator

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

V-1phV-3ph

25

50BF

79

Ctrl

CBBI

BO

I-3ph

I-3ph

V-3ph

50HS

7SD87


S

IP5

G-0032a.E

N

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V1

V2

V4

FG Line

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

A-QA

V3

I1

I2

I3

I4

V1V2

V3

I1

I2

I3

I4

V4

MP

CT-3ph 2

Power line 1

Busbar 1

Busbar 2

B-QA

C-QA

27 59 81

50/51

FL87L

PI

Power line 2

Com.

CI

MP

VT-1ph 2

52

52

52






59 Overvoltage p rotection





Ctrl Control

FL Fault locator

FG Function group

MP Measuring point



CB Circuit breaker


BI Binary input

BO Binary output

87STUB



25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

I-3ph

V-3ph

7SD87

50HS

Fig. 17 Application example: Line differential protection for overhead line with breaker-and-a-half scheme

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.EN

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in7SD87

DIF

FBasic

DIF

FOverheadline

DIF

FOverheadline

withtransformer

DIF

FOverheadline,

bre

aker-and-a-half




87L Line differential protection for 2 line ends I

87L Line differential protection for 3 to 6 line ends I









50BF Circuit-breaker failure protection CBFP 2

50/51 Overcurrent protection, phases I>, Ip>














86 Lockout

87L/87T Option for line protection: including power transformer I

Option for line differential protection: charging-current compensation



FL Fault locator FL




Measured values, expanded: Min, Max, Avg (function points per type)


CFC standard

CFC arithmetic











Table 7 7SD87 functions, application templates

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Differential protection and distance protection 7SL86 Applications

Differential Protection and Distance Protection 7SL

Properties

Main protection function: Differential protection and distance protec-tion


Inputs and outputs:


12 predefined standard variants with 4/4 or8/8 current/voltage transformers, 5 to 31binary inputs,8 to 46 binary outputs or

flexibly adjustable I/O quantity structurewithin the scope of the SIPROTEC 5 modularsystem



Phase-selective protection of overhead lines and cables withsingle- and multi-ended infeeds

Used on lines of all lengths with up to 6 line ends





Two independent main protection functions with variousprotection algorithms

Main 1 protection: Differential protection with very shorttripping time. The adaptive algorithm guarantees maximumsensitivity and stability, even in case of di fferent CT errors,CT saturation and capacitive charging currents.

Main 2 protection: 6-system distance protection with very

short tripping time and high accuracy also when detectingCT saturation.









Applications

The combined differential and distance protection 7SL86 is auniversal protection, control and automation device on the basisof the SIPROTEC 5 system.

Due to its high flexibility, it is suitable as selective protectionequipment for overhead lines and cables with single- and multi-ended infeeds of all lengths with up to 6 ends. Transformers andcompensating coils in the protection zone are also possible. Thedevice is delivered with the aforementioned number of analogand binary inputs and outputs. Apart from that, the devicesupports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and lowoperating costs.

Functions

Table 8 on page 32 shows all functions that are available in the7SL86. Basically, all functions can be configured freely withDIGSI 5. For the application of some of the functions, yourequire the appropriate number of free function points withinthe device. The function point calculator in the online configura-tor provides support in determining the required number of

function points for your device.Application templates


7SL86 basic differential and distance protection

Phase-selective differential protection with 3-pole tripping




Fault locator.

7SL86 differential and distance protection for overhead line in

grounded systems

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with grounded neutral point: Circuit-breakerfailure protection, AR, synchronization function, voltage andfrequency protection, thermal overload protection.

Fig. 18 Differential protection and distance protection 7SL86

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Differential protection and distance protection 7SL86 Application examples


7SL86 differential and distance protection with MHO distance

zone characteristic for overhead line in grounded systems

Comprises the basic functions with MHO distance zonecharacteristics as well as additional functions that are typicallyrequired for the protection of overhead lines in networks withgrounded neutral point (Fig. 19).

7SL86 differential and distance protection for overhead line

in grounded systems, with AR for applications with

breaker-and-a-half schemes

Comprises the basic functions as well as additional functionsthat are typically required for the protection of overhead linesin networks with grounded neutral point


7SL86 differential and distance protection with MHO distance

zone characteristics for overhead line in grounded systems,

with AR for applications with breaker-and-a-half schemes

Comprises the basic functions with MHO distance zonecharacteristics as well as additional functions that are typicallyrequired for the protection of overhead lines in networks with

grounded neutral point Prepared for applications with breaker-and-a-half schemes

(Fig. 20).


V4

I1

I2

I3

I4

V1

V2

V3

FG Circuit breaker

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

QA

Power line

Com.

52

FG Function group

MP Measuring point



CB Circuit breaker

BI Binary input

BO Binary output

FG Line

V-3ph

27 59 81

50/51

21 67N

6887L

PI

FL85

CI






50BF Circuit-breaker failure protection59 Overvoltage protect ion





85 Teleprotection schemes for 21 and/or 67 N

Ctrl Control

FL Fault locator




I-3ph V-1ph

V-3ph

25

50BF

79

Ctrl

CBBI

BO

I-3ph

7SL86

50HS

Fig. 19 Application example: Combined line differential and distance protection for overhead line

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Differential protection and distance protection 7SL86 Application examples


V1

V2

V4

MP

VT-1ph 1

MP

CT-3ph 1

MP

VT-3ph 1

A-QA

V3

I1

I2

I3

I4

V1V2

V3

I1

I2

I3

I4

V4

MP

CT-3ph 2

Power line 1

Busbar 1

Busbar 2

B-QA

C-QA

Power line 2

Com.

CI

MP

VT-1ph 2

52

52

52

FG Function group

MP Measuring point



CB Circuit breaker


BI Binary input

BO Binary output

FG Line

I-3ph

27 59 81

50/51

21 67N

6887L

PI




FL85

87STUB



25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

25

50BF

79

Ctrl

CBBI

BO

V-1ph

V-3ph

I-3ph

V-3ph

7SL86

50HS












85 Teleprotection schemes for 21 and/or 67N

87L Differential protect ion, l ine

87STUB STUB Differential protectionCtrl Control

FL Fault locator

Fig. 20 Application example: Combined line differential and distance protection for overhead line with breaker-and-a-half scheme

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Differential protection and distance protection 7SL86 Functions, application templates




in

7SL86

DIFF/DISBasic

DI

FF/DISoverhead

lin

e,

grounded

sy

stems

DI

FF/DISMHO

,

ov

erheadline

,

gr

oundedsystems

DI

FF/DISoverhead

lin

e,

groundedsyst.

br

eaker-and-a-h

alf

DI

FF/DISMHO

,over-

he

adline

,grounded

br

eaker-and-a-h

alf




87L Line differential protection for 2 line ends I

87L Line differential protection for 3 to 6 line ends I 25 Synchrocheck, synchronizing function Sync 2 227 Undervoltage protection, 3-phase V< 27 Undervoltage protection, positive-sequence system V1< 27 Undervoltage protection, 1-phase, Vx * Vx< 32, 37 Power protection active/reactive power P, Q 46 Negative-sequence system overcurrent protection with direction I2>, (V2,I2) 49 Thermal overload protection , It 50HS High speed instantaneous overcurrent protection I>>>

50BF Circuit-breaker failure protection CBFP 2 250/51 Overcurrent protection, phases I>, Ip>



59 Overvoltage protection, positive-sequence system V1> 59 Overvoltage protection, compounding V1comp> 59 Overvoltage protection, negative-sequence system V2>

Documents

7SA87