7sv600x catalog

Function overview

Description

Siemens SIP · 2008

10 Relays for Various Protection Applications / 7SV600

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Protection functions

• Circuit-breaker failure protection (sin-gle or three-pole with/without current)

• Independently settable delay times foroperation with and without current

• Single or two-stage time delay of thebusbar trip command

• Re-trip (cross trip) stage(1st stage of the 2-stage operation)

• Intertrip facility (via teleprotectioninterface)

• End-fault protection with intertrip

• “No current” control using the cir-cuit-breaker auxiliary contacts

Features

• Highly sensitive current detection

• 2-out-of-4 check of the currentdetectors

• Short reset time, negligible overshoottime

• Can be initiated by phase-segregated orcommon-phase trip commands

• End-fault protection

• Assignable output relays, LEDs andbinary inputs

Monitoring functions

• Monitoring of circuit-breaker auxiliarycontacts

• Operational current measured values

• Self-supervision of the relay

• Event buffer

• Fault protocols

• Oscillographic fault recording

Communication interfaces

• 1 x RS485 interface– IEC 60870-5-103 protocol– DIGSI

Hardware

• Digital inputs:– 3 binary inputs

• Digital outputs:– 4 output relays

Front design

• Display for operation and measuredvalues

• 6 LEDs for local alarm

SIPROTEC 7SV600Numerical Circuit-Breaker Failure Protection Relay

The SIPROTEC 7SV600 is a numericalrelay used for circuit-breaker failureprotection. A failure occurs when thecircuit-breaker fails to correctly open andclear the fault after single or three-pole tripcommands have been issued by the protec-tion unit. It is then necessary to trip therelevant busbar zone (section) to ensurefault clearance.

Generally, the monitoring of the current issufficient as the criterion for the indicationthat the circuit-breaker has successfullycleared the fault (“current condition”).However, under certain fault conditions(e.g. overvoltage), little or no current mayflow, making the measurement of currentunreliable for indication of the circuit-breaker status (“no current condition”).The 7SV600 operates correctly for boththese conditions. The relay is suitable foruse at all voltage levels and in all applica-tions. The current transformers can eitherbe of the closed iron core or linear type.The relay can be incorporated in conven-tional switchgear systems and modemsubstation control systems e.g. SICAM.

Fig. 10/26SIPROTEC 7SV600numerical circuit- breakerfailure protection relay

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Application

The numerical circuit-breaker failureprotection relay 7SV600 provides rapidbackup fault clearance instruction to theassociated circuit-breakers in case thecircuit-breaker nearest to the fault failsto respond.

It is suitable for power systems of allvoltage levels. The initiation signal can bederived from any protection or supervisionequipment or, in case of manual opening,from the control discrepancy switch of thebreaker. Information from the circuit-breaker auxiliary contact is required forthe breaker failure protection to functionduring faults which produce little or nocurrent flow (possible only with common-phase initiation).

Fig. 10/27 Typical applications

Simplified applicationdiagram of circuit-breakerfailure protection.

Simplified application diagramof circuit-breaker failureprotection by means of acircuit-breaker auxiliary contact.

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Construction

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Protection functions

The relay contains all the componentsneeded for

• Acquisition and evaluation of measuredvalues

• Operation and display

• Output of signals and trip commands

• Input and evaluation of binary signals

• SCADA interface (RS485)

• Power supply

The rated CT currents applied to theSIPROTEC 7SV600 can be 1 or 5 A. This isselectable via a jumper inside the relay.

Three different housings are available. Theflush-mounting versions have terminalsaccessible from the rear. The surface-mounting version has terminals accessiblefrom the front.

Fig. 10/28Rear view of surface-mounting housing

The breaker failure protection can operatesingle-stage or two-stage. When used assingle-stage protection, the bus trip com-mand is given to the adjacent circuit-breakers if the protected feeder breakerfails. When used as two-stage protection,the first stage can be used to repeat the tripcommand to the relevant feeder breaker,normally on a different trip coil, if the ini-tial trip command from the feeder protec-tion is not successful. The second stage willresult in a bus trip to the adjacent breakers,if the command of the first stage is not suc-cessful.

The bus trip command from the breakerfailure protection can be routed to all cir-cuit-breakers linked to the same busbar(section) as the breaker that failed. It canalso be transmitted to the remote end bymeans of a suitable communication link(e.g. PLC, radio wave, or optical fiber).

The isolator replica which is necessary incase of multiple busbar sections is not partof the 7SV600 relay.

The current level is monitored in each ofthe three phases against a set threshold. Inaddition, the zero-sequence component orthe negative-sequence component of thephase currents derived by symmetricalcomponent analysis is monitored. This en-sures high security against malfunction byuse of a 2-out-of-4 check of the current de-tectors.

The version with phase-segregated initia-tion enables reliable breaker failure detec-tion even during single-pole auto-reclosecycles, provided the phase-segregated tripsignals of the feeder protection are con-nected to the 7SV600.

If the protected circuit-breaker is not oper-ational (e.g. air pressure failure or springnot charged), instantaneous bus trip of theadjacent circuit-breakers can be achievedfollowing a feeder protection trip, providedthe relay is informed via binary input ofthe breaker status (possible only for com-mon-phase initiation).

An end-fault protection function is inte-grated in the 7SV600 relay. An end fault isa short-circuit located between the circuit-breaker and the current transformer setof the feeder. For this fault, current flow isdetected, although the auxiliary contactsof the breaker indicate open breaker poles.A command signal is generated which canbe transmitted to the remote-end breaker(possible only for common-phase initia-tion).

Special measures are taken to prevent mal-function of the relay. Besides the men-tioned 2-out-of-4 check of the currentdetection elements, the trip signals of thefeeder protection can be connected in aredundant manner, so that they can bechecked for plausibility (possible only forcommon-phase initiation).

Continuous monitoring of the measuredvalues permits rapid annunciation of anyfault in the instrument transformer cir-cuits. Continuous plausibility monitoringof the internal measured value processingcircuits and monitoring of the auxiliaryvoltages to ensure that they remain withintolerance are obviously inherent features.

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Serial data transmission

A PC can be connected to ease setup of therelay using the Windows-based programDIGSI which runs under MS-Windows.

It can also be used to evaluate up to8 oscillographic fault records, 8 fault logsand the operational event buffer. As anoption, a system interface is available.

The SIPROTEC 7SV600 transmits a subsetof data via IEC 60870-5-103 protocol:

• General fault detection of the device

• General trip of the device

• Current in phase L2 [%] =

• Breaker failure trip T1 (local trip)

• Breaker failure trip T2 (busbar trip)

• Circuit-breaker defective: Trip

• Trip by end-fault protection

• Trip by monitoring current symmetry

• Breaker failure protection is active

Fig. 10/29Wiring communication RS485For convenient wiring of the RS485 bus,use bus cable system 7XV5103 (see part 15 of this catalog)

Connection diagrams

Fig. 10/30Connection example for single-stage breaker failureprotection with phase-segregated initiation

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Connection diagrams

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Fig. 10/31Connection example for 2-stage breaker failure pro-tection, common phase initiation, CB interrogation

Fig. 10/32Connection example for single-stage breaker failureprotection with common phase initation andBuchholz protection, CB interrogation is imperative;additional intertrip signal to the opposite line end incase of breaker failure or end fault

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Technical data

General unit data

Measuring circuits

Rated current IN 1 to 5 A

Rated frequency fN

can be parameterized50 or 60 Hz (selectable)

Power consumption of currentinputs

At IN = 1 AAt IN = 5 A

< 0.1 VA< 0.2 VA

Overload capability current path,Thermal (r.m.s.)

Dynamic (pulse current)

100 x IN for ≤ 1 s30 x IN for ≤ 10 s4 x IN continuous

250 x IN one half cycle

Auxiliary voltage

Power supply via integrated DC/DC converter

Rated auxiliary voltage VAux DC 24 / 48 V DC60 / 110 / 125 V DC220 / 250 V DC

Permissible variations 19 to 58 V DC48 to 150 V DC176 to 300 V DC

SuperimposedAC voltagePeak-to-peak

≤ 12 % at rated voltage≤ 6 % at limits of admissible voltage

Power consumptionQuiescentEnergized

Approx. 2 WApprox. 4 W

Bridging time during fail-ure/short-circuit of auxiliary voltage

≥ 50 ms at Vrated ≥ 110 V DC≥ 20 ms at Vrated ≥ 24 V DC

Rated auxiliary voltage VAux 115 V AC, 50/60 Hz230 V AC, 50/60 Hz

Permissible variations 92 to 133 V AC184 to 265 V AC

Heavy duty (command) contacts

Command (trip) relays, numberContacts per relaysSwitching capacity

MakeBreak

Switching voltagePermissible current

2 (can be marshalled)2 NO

1000 W / VA30 W / VA250 V5 A continuous30 A for 0.5 s

Signal contacts

Signal/alarm relaysContact per relaysSwitching capacity

MakeBreak

Switching voltagePermissible current

2 (can be marshalled)1 CO

1000 W/VA30 W/VA250 V5 A

Binary inputs

NumberRated operating voltageCurrent consumption

Pick-up thresholdRated aux. voltage24/48/60 V DCRated aux. voltage110/125/220/250 V DC

3 (can be marshalled)24 to 250 V DCApprox. 2.5 mA,independent of operating voltageselectable by plug-in jumpersVpickup ≥ 17 V DCVdrop-off < 8 V DCVpickup ≥ 74 V DCVdrop-off < 45 V DC

Unit design

HousingDimensions

WeightIn housing for surface mountingIn housing for flush mounting

7XP20Refer to part 17 for dimensiondrawings

Approx. 4.5 kgApprox. 4.0 kg

Degree of protectionacc. to EN 60529

HousingTerminals

IP 51IP 21

Serial interface

IsolatedStandardTest voltageConnection

RS4852.8 kV DCData cable on terminals, two datawires, one frame reference, forconnection of a personal computeror similar; core pairs with shield,shield must be earthed; communica-tion possible via modem

Baud rate As delivered 9600 baudmin. 1200 baud; max. 19200 baud

Electrical tests

Specifications

Standards IEC 60255-5; ANSI/IEEE C37.90.0

Insulation tests

High voltage test (routine test)except DC voltage supply inputand RS485

2 kV (r.m.s.); 50 Hz

High voltage test (routine test)only DC voltage supply inputand RS485

2.8 kV DC

High voltage test (type test)Between open contacts oftrip relaysBetween open contactsof alarm relays

1.5 kV (r.m.s.), 50 Hz

1 kV (r.m.s.), 50 Hz

Impulse voltage test (type test)all circuits, class III

5 kV (peak); 1.2/50 µs; 0.5 J;3 positive and 3 negative impulsesat intervals of 5 s

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Technical data

EMC tests for noise immunity; type tests

Standards: IEC 60255-6, IEC 60255-22 (product standards);EN 50082-2 (generic standard) VDE 0435, part 303

High frequencyIEC 60255-22-1, class III

2.5 kV (peak); 1 MHz; τ =15 µs;400 shots/s; duration 2 s

Electrostatic dischargeIEC 60255-22-2, class III andIEC 61000-4-2, class III

4 kV/6 kV contact discharge;8 kV air discharge; both polarities;150 pF; Ri = 330 Ω

Irradiation with radio-frequencyfield, non-modulated;IEC 60255-22-3 (report), class III

10 V/m; 27 to 500 MHz

Irradiation with radio-frequencyfield, amplitude-modulated;IEC 61000-4-3, class III

10 V/m; 80 to 1000 MHz;80 % AM; 1 kHz

Irradiation with radio-frequencyfield, pulse-modulated;IEC 61000-4-3/ENV 50204, class III

10 V/m; 900 MHz;repetition frequency 200 Hz;duty cycle 50 %

Fast transients/burstsIEC 60255-22-4 and IEC 61000-4-4,class III

2 kV; 5/50 ns; 5 kHz; burst length15 ms; repetition rate 300 ms; bothpolarities; Ri = 50 Ω; duration 1 min

Line-conducted HF, amplitude-modulated IEC 61000-4-6, class III

10 V; 150 kHz to 80 MHz;80 % AM; 1 kHz

Magnetic field with power frequencyIEC 61000-4-8, class IV

IEC 60255-6

30 A/m continuous;300 A/m for 3 s; 50 Hz0.5 mT; 50 Hz

Oscillatory surge withstandcapability ANSI/IEEE C37.90.1(common mode)

2.5 to 3 kV (peak);1 to 1.5 MHz, decaying oscillation;50 surges per s; duration 2 s;Ri = 150 Ω to 200 Ω

Fast transient surge withstandcapability ANSI/IEEE C37.90.1(common mode)

4 to 5 kV; 10/150 ns;50 surges per s; both polarities;duration 2 s; Ri = 80 Ω

Radiated electromagneticinterference ANSI/IEEE C37.90.2

10 to 20 V/m; 25 to 1000 MHz;amplitude and pulse modulated

High frequency testdocument 17C (SEC) 102

2.5 kV (peak, alternating polarity);100 kHz, 1 MHz, 10 and 50 MHz,decaying oscillation; Ri = 50 Ω

EMC tests for interference emission; type tests

Standard EN 50081-* (generic standard)

Conducted interference voltage,aux. voltageCISPR 22, EN 55022

150 to 30 MHz

Limit class B

Radio interference field strengthCISPR 11, EN 55011

30 to 1000 MHzLimit class A

Mechanical stress tests

Vibration, shock stress and seismic vibration

During operation

Standards IEC 60255-21 and IEC 60068-2

VibrationIEC 60255-21-1, class IIEC 60068-2-6

Sinusoidal10 to 60 Hz: ± 0.035 mm amplitude;60 to 150 Hz: 0.5 g accelerationSweep rate 1 octave/min20 cycles in 3 orthogonal axes

ShockIEC 60255-21-2, class I

Half-sineAcceleration 5 g, duration 11 ms,3 shocks in each direction of3 orthogonal axes

Seismic vibrationIEC 60255-21-3, class IIEC 60068-3-3

Sinusoidal1 to 8 Hz: ± 3.5 mm amplitude(horizontal axis)1 to 8 Hz: ± 1.5 mm amplitude(vertical axis)8 to 35 Hz: 1 g acceleration(horizontal axis)8 to 35 Hz: 0.5 g acceleration(vertical axis)Sweep rate 1 octave/min1 cycle in 3 orthogonal axes

During transportation

Standard IEC 60255-21 and IEC 60068-2

VibrationIEC 60255-21-1, class IIIEC 60068-2-6

Sinusoidal5 to 8 Hz: ± 7.5 mm amplitude;8 to 150 Hz: 2 g accelerationSweep rate 1 octave/min20 cycles in 3 orthogonal axes

ShockIEC 60255-21-2, class IIEC 60068-2-27


Continuous shockIEC 60255-21-2, class IIEC 60068-2-29


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Technical data

Climatic stress tests

Temperatures

Permissible temperatureduring service

–20 °C to +70 °C(> 55 °C decreased display contrast)

Recommended temperatureduring service

–5 °C to +55 °C

Permissible temperature duringstorage

–25 °C to +55 °C

Permissible temperature duringtransport

Storage and transport withstandard works packaging!

–25 °C to +70 °C

Humidity

Permissible humidityWe recommend that all units areinstalled such that they are not sub-jected to direct sunlight, nor to largetemperature fluctuations which maygive rise to condensation.

Mean value per year ≤ 75 % relativehumidity; on 30 days per year 95 %relative humidity; condensation notpermissible!

Service conditions

The relay is designed for use in in-dustrial environment, for installationin standard relay rooms and com-partments so that with proper instal-lation electromagnetic compatibility(EMC) is ensured. The followingshould also be heeded:

• All contactors and relays whichoperate in the same cubicle or onthe same relay panel as the digitalprotection equipment should, as arule, be fitted with suitable spikequenching elements.

• All external connection leads insubstations from 100 kV upwardsshould be shielded with a shieldcapable of carrying power cur-rents and earthed at both sides.No special measures are normallynecessary for substations of lowervoltages.

• The shield of the RS485 cablemust be earthed.

• It is not permissible to withdrawor insert individual modules un-der voltage. In the withdrawncondition, some components areelectrostatically endangered;during handling the standardsfor electrostatically endangeredcomponents must be observed.The modules are not endangeredwhen plugged in.

WARNING! The relay is notdesigned for use in residential,commercial or light-industrialenvironment as defined in EN 50081.

Functions

Breaker supervision

Current detectionSetting range

Drop-off ratio

Tolerance

0.05 x IN to 4.00 x IN (steps 0.01 x IN)

Approx. 0.9

0.01 x IN or 5 % of set value

Initiation conditions

Depending on ordered version Phase-segregated initiation (single-pole trip from feeder protection) orcommon-phase initiation (three-poletrip from feeder protection) andcommon-phase initiation (three-poletrip from non-short-circuit protec-tion)

Times

Pickup time Approx. 15 ms with measuredquantities presentApprox. 25 ms after switch-on ofmeasured quantities

Drop-off time with sinusoidalmeasured quantitiesDrop-off time maximum

≤ 10 ms

≤ 25 ms

Delay times for all time stages 0.00 s to 32.00 s (steps 0.01 ms)or deactivated

Delay time tolerance 1 % of set value or 10 ms

The set times are pure delay times.

Additional functions

Operational value measurements

Operational current valuesMeasurement rangeTolerance

IL1; IL2; IL3

0 % to 240 % IN

3 % of rated value or of measuredvalue

Steady-state measured value supervision

Current unbalance Imax / Imin > symmetry factoras long as I > Ilimit

Fault event data storage

Storage of annunciations of the lasteight faults with max. 30 messageseach

Time assignment

Resolution for operationalannunciationsResolution for fault eventannunciations

1 s

1 ms

Max. time deviation 0.01 %

Data storage for fault recording (max. 8 fault events)

Total storage time (fault detectionor trip command = 0 ms)

Max. 5 s, selectable pre-trigger andpost-fault time

Max. storage periodper fault event Tmax

Pre-trigger time Tpre

Post-fault time Tpost

0.30 to 5.00 s (steps 0.01 s)

0.05 to 0.50 s (steps 0.01 s)0.05 to 0.50 s (steps 0.01 s)

Sampling rate 1 instantaneous value per msat 50 Hz1 instantaneous value per 0.83 msat 60 Hz

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Selection and ordering data Description Order No.

7SV600 numerical circuit-breaker failure protection relay 7SV600�-��A00 -�DA0

Rated current; rated frequency1 A; 50/60 Hz 1

5 A; 50/60 Hz 5

Rated auxiliary voltage24, 48 V DC 2

60, 110, 125 V DC 4

220, 250 V DC / 115 V AC, 50/60 Hz 5

230 V AC, 50/60 Hz 6

Unit designFor panel surface mounting with terminals on both sides B

For panel surface mounting with terminals at top and bottom D

For panel flush mounting/cubicle mounting E

OptionsFor common phase initiation 0

For common phase initiation or phase-segregated initiation 1

AccessoriesDIGSI 4Software for configuration and operation of Siemens protection unitsrunning under MS Windows (version Windows 2000/XP Professional Edition)device templates, Comtrade Viewer, electronic manual includedas well as “Getting started” manual on paper, connecting cables (copper)

BasisFull version with license for 10 computers, on CD-ROM(authorization by serial number) 7XS5400-0AA00

ProfessionalDIGSI 4 Basis and additionally SIGRA (fault record analysis),CFC Editor (logic editor), Display Editor (editor for defaultand control displays) and DIGSI 4 Remote (remote operation) 7XS5402-0AA00

RS232 (V.24)�RS485 converter* 7XV5700-��00

Plug-in auxiliary power supply unit 220 V/50 Hz AC 0

Plug-in auxiliary power supply unit 110 V/60 Hz AC 1

With RS485 connecting cable for 7SJ6, 7RW6, 7SD6, 7SV6 A

With RS485 connecting cable with 9-pin connector for SIMEAS Q B

With RS485 connecting cable with plug connector for SIMEAS T C

Without RS232 connecting cable A

With RS232 connecting cable 7XV5100-2 for PC/notebook, 9-pin connector (female) B

With RS232 adapter, 25-pin connector (male) to 9-pin connector (female)for connection to notebook/PC C

Converter full-duplex fiber-optic cable - RS485With power supply 24 - 250 V DC and 110/230 V AC 7XV5650-0BA00

Manual for 7SV600English C53000-G1176-C123

*) RS485 bus system up to 115 kbaudRS485 bus cable and adaptor7XV5103-�AA��; see part 15.

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Connection diagram

Fig. 10/33General connection diagram of 7SV600 with presettings for common phase initiation

Fig. 10/34General connection diagram of 7SV600 with presettings for phase-segregated initiation

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Dimension drawings in mm / inch

Side view

Fig. 17/15Housing for panel flush mounting/cubicle mounting, terminals at rear (1/6 x 19")

Front view

Fig. 17/16Housing for surface mounting,terminals at top and bottom (1/6 x 19")

Dimension drawings for 1/6 x 19" housing (7XP20)

View from the rear Panel cutout

Side view

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Dimension drawings in mm / inch

Side view

Dimension drawings for 1/6 x 19" housing (7XP20)

Front view

Fig. 17/17Housing for panel surface mounting,terminals on the side (1/6 x 19")

7sv600x catalog

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