Table of Contents

Siemens / SIPROTEC 7SS52 V4.7 setting parameters & highlights (SI4017)

Table of Contents

Overview (7SS522 V4.7, 7SS523 V3.3 and 7SS525 V3.3 devices)

The SIPROTEC 7SS52 numerical protection is a selective, reliable and fast protection for busbar faults and breaker failure in medium, high and extra-high voltage substations with various possible busbar configurations.

For more detailed information on “SIPROTEC 7SS52” relays, refer to SIPROTEC 4 devices manuals.

To see other supported devices, click here.

Bus Coupler Protection – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
106A Combi-Coupler   YES
NO		 NO Combi-Coupler
6101 STAB FAC:BZ   0.10 .. 0.80 0.65 Stabilising factor – selective
6102 Id> BZ   0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold – selective
6103 STAB FAC:CZ   0.00 .. 0.80 0.50 Stabilising factor – check zone
6104 Id> CZ   0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold – check zone
6105A CrossStabFac BZ   0.00 .. 1.00 0.40 Cross stabilisation factor – BZ
6107A CrossStabFac CZ   0.00 .. 1.00 0.40 Cross stabilisation factor – CZ
6108A Is< BZ s. char.   0.00 .. 25.00 I/Ino 5.00 I/Ino Stabilising current threshold – BZ – sens. char.
6109A Id> BZ s. char.   0.05 .. 4.00 I/Ino 0.25 I/Ino Diff-current threshold – selective – sens. char.
6110A Is< CZ s. char.   0.00 .. 25.00 I/Ino 4.50 I/Ino Stabilising current threshold – CZ – sens. char.
6111A Id> CZ s. char.   0.05 .. 4.00 I/Ino 0.25 I/Ino Diff-current threshold – check zone – sens. char.
6120A Add. crit.   existent
nonexistent		 nonexistent Additional criterion for tripping
6319A Superv. A.crit.   OFF
alarm only
blocking		 OFF Supervision BI add. criterion
6320A Sens. charact.   released
blocked		 blocked Sensitive characteristic switchover
6321A Superv. S. char   NO
YES		 YES Supervision BI sensitive characteristic

Check Zone Protection – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
6103 StAB FAC:CZ   0.00 .. 0.80 0.50 Stabilising factor check zone
6104 Id> CZ   0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold – check zone
6110A Is< CZ s. char.   0.00 .. 25.00 I/Ino 4.50 I/Ino Stabilising current threshold – CZ sens. char.
6111A Id> CZ s. char.   0.05 .. 4.00 I/Ino 0.25 I/Ino Diff-current threshold – CZ sens. char.

Circuit Breaker Failure Protection – Settings for the Central Unit – Part 1

Addr. Parameter C Setting Options Default Setting Comments
118 I> BF   0.10 .. 2.00 I / In 0.50 I / In Current threshold for BF
119A I> BF s. char.   0.05 .. 2.00 I / In 0.25 I / In Current threshold for BF – sens. char.
6201 STAB FAC:BF   0.00 .. 0.80 0.50 Stabilising factor BF protection
6202A Is< BF s. char.   0.00 .. 25.00 I/In 5.00 I/Ino Stabilising current threshold – BF
– sens. char.

Circuit Breaker Failure Protection – Settings for the Central Unit – Part 2

Addr. Parameter C Setting Options Default Setting Comments
114 BF BI MODE   1-ch w/o sup
1-ch w sup
2-ch w/o sup
2-ch w sup		 1-ch w sup Binary input mode / supervision BF
115 BF OP MODE   non existent
external
BZ unbalance
trip rep/unbal
I>query
trip rep/I>quer		 BZ unbalance Operation mode BF
116 BF I<   ON
OFF		 OFF Low-current mode BF
117 TRIP REP. MODE   1pole
3pole		 1pole TRIP repeat mode
118 I> BF   0.10 .. 2.00 I / In 0.50 I / In Current threshold for BF
119A I> BF s. char.   0.05 .. 2.00 I / In 0.25 I / In Current threshold for BF – sens. char.
120 T-BF-1P   0.05 .. 10.00 s 0.25 s Time delay for BF with 1-pole faults
121 T-BF-mP   0.05 .. 10.00 s 0.25 s Time delay for BF with multi-pole faults
122 T-BF I<   0.05 .. 10.00 s 0.25 s Time delay for BF low current mode
123A T-BF IMP   0.05 .. 10.00 s 0.50 s Time delay for BF pulse mode
124 T-BF CB fault   0.00 .. 10.00 s 0.10 s Time delay BF after CB fault
125 T-TRIP repeat   0.00 .. 10.00 s 0.12 s Time delay for TRIP repeat
127 T-BF rel sup   0.02 .. 15.00 s 15.00 s Supervision bin. input BF-re- lease
128 T-BF 2chan   0.06 .. 1.00 s 0.06 s Supervision time BF start / re- lease
6106 Tmin TRIP   0.01 .. 32.00 s 0.15 s Minimum duration of TRIP com- mand
6320A Sens. charact.   released
blocked		 blocked Sensitive characteristic switcho- ver

End Fault Protection – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
118 I> BF   0.10 .. 2.00 I / In 0.50 I / In Current threshold for BF
119A I> BF s. char.   0.05 .. 2.00 I / In 0.25 I / In Current threshold for BF – sens. char.
120 T-BF-1P   0.05 .. 10.00 s 0.25 s Time delay for BF with 1-pole fault
121 T-BF-mP   0.05 .. 10.00 s 0.25 s Time delay for BF with multi-pole faults
125 T-TRIP repeat   0.00 .. 10.00 s 0.12 s Time delay for TRIP repeat
126 T-CB open   0.00 .. 10.00 s 0.00 s Time delay for CB open
129 End Fault Prot   ON
OFF		 OFF End fault protection

Supervisory Protection Functions – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
112 Bay status   out of service
in service
maintenance		 in service Bay status
127 T-BF rel sup   0.02 .. 15.00 sec 15.00 sec Supervision bin. input BF-release
128 T-BF 2chan   0.06 .. 1.00 sec 0.06 sec Supervision time BF start / release
6102 Id> BZ   0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold – selective
6104 Id> CZ   0.20 .. 4.00 I/Ino 1.00 I/Ino Diff-current threshold – check zone
6109A Id> BZ s. char.   0.05 .. 4.00 I/Ino 0.25 I/Ino Diff-current threshold – BZ sens. char.
6111A Id> CZ s. char.   0.05 .. 4.00 I/Ino 0.25 I/Ino Diff-current threshold – CZ sens. char.
6312A ZERO CR SUPERV   ON
OFF		 Ein Zero crossing supervision
6301 DCO TIME   1.00 .. 180.00 sec 7.00 sec Limit value disconnector time
6302 DCO Malfunct   alarm only
blocking
block./release
block./acknow.		 alarm only Reaction on disconnector mal- function
6303 DCO DC FAIL   OLD
ON		 OLD Treatment disconnector status on DC fail
6304 DCO ST 1/1   OLD
ON		 OLD Treatment disconn. status not plausible
6306 DIFF SUPERV   ON
OFF		 ON Differential current supervision
6307 T-Idiff SUPERV   1.00 .. 10.00 sec 2.00 sec Time delay for diff-current supervision
6308 Id> SUPERV BZ   0.05 .. 0.80 I/Ino 0.10 I/Ino Limit value diff-current supervision -BZ
6309 Id> SUPERV CZ   0.05 .. 0.80 I/Ino 0.10 I/Ino Limit value diff-current supervision -CZ
6310 DIF SUP mode BZ   alarm only
blocking
block./release		 blocking Diff-current supervision mode -BZ
6311 DIF SUP mode CZ   alarm only
blocking
block./release		 alarm only Diff-current supervision mode -CZ
6315 CB SUP TIME   1.00 .. 180.00 sec 7.00 sec CB supervision time

Oscillographic Fault Recording – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
6401A fault rec mode   global storage, local initiation
global storage, initiation by CU
local storage, local initiation		 global storage, ini- tiation by CU Mode of fault recording
6404 MAX. LENGTH   0.30 .. 5.00 sec 2.00 sec Max. length of a Waveform Cap- ture Record
6405 PRE. TRIG. TIME   0.05 .. 0.50 sec 0.20 sec Captured Waveform Prior to Trigger
6406 POST REC. TIME   0.05 .. 0.50 sec 0.20 sec Captured Waveform after Event
6407 BinIn CAPT.TIME   0.10 .. 5.00 sec; ∞ 0.40 sec Capture Time via Binary Input

Oscillographic Fault Recording – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7402 INITIATION   STORAGE BY FD.
STORAGE BY TRIP
START WITH TRIP		 STORAGE BY FD. Start/storage criterion for fault recording

Device – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
5299A TO IV-Bit T103   0 .. 1,500 min 1,380 min Timeout IV-Bit T103

Power System Data – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
5104 FREQUENCY   50 Hz
60 Hz		 50 Hz Nominal frequency

Power System Data – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7899 FREQUENCY   50 Hz
60 Hz		 50 Hz Rated system frequency

Protection General – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
112 Bay status   out of service
in service
maintenance		 in service Bay status
113 I> TRIP   0.00..25.00 I / In 0.00 I / In Current threshold for TRIP release
115 BF OP MODE   non existent
external
BZ unbalance
trip rep/unbal
I>query
trip rep/I>quer		 BZ unbalance Operation mode BF
118 I> BF   0.10..2.00 I / In 0.50 I / In Current threshold for BF
119A I> BF s. char.   0.05..2.00 I / In 0.25 I / In Current threshold for BF – sens. char.
151A Maint. Dco1   YES
NO		 YES Maintenance for disconnector 1
156A Maint. CB   YES
NO		 YES Maintenance for CB
5401 PROT TR BUS   YES
NO		 YES Selective protection for transfer busbar
5108A Test mode SK   YES
NO		 OFF Test mode for module SK
5111 Language BU   German
English
French
Spanish
Italian
Russian		 English Language of bay units
6106 Tmin TRIP   0.01.. 32.00 s 0.15 s Minimum duration of TRIP command
6316 I> MAN TRIP   0.00 .. 2.50 I/In; ∞ 0.05 I/In Limit value for circuit breaker test
6317 T-TRIP-Rel sup   0.06 .. 1.00 s 0.06 s Supervision bin. input TRIP-Release
6318 CTRL REL BU   released
blocked		 released Control release for bay units

Protection General – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
128 T-BF 2chan   0.06 .. 1.00 s 0.06 s Supervision time BF start / release
1141 T TRIP   0.01..32.00 s 0.15 s Minimum trip command duration
7101 LANGUAGE   DEUTSCH
ENGLISH
FRANCAIS
ESPANOL
ITALIANO
PYCCK.		 ENGLISH Operating language

Integrated Operation of the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7101 LANGUAGE   DEUTSCH
ENGLISH
FRANCAIS
ESPANOL
ITALIANO
PYCCK.		 ENGLISH Operating language
7120 OPER.1st L.   IL1, IL2, IL3, IE
I-DIFF. L1, I-DIFF. L2, I-DIFF. L3
I-RESTR. L1, I-RESTR. L2, I-RESTR. L3		 IL1 Display of measured values in the 1st line of the quiescent- state indication in 4-line mode
7121 OPER.1st L.   PRIMARY
SECONDARY
NORMALIZED		 SECONDARY Display of measured values in the 1st line as primary or secondary (percent) values
7122 OPER.2nd L.   IL1, IL2, IL3, IE
I-DIFF. L1, I-DIFF. L2, I-DIFF. L3
I-RESTR. L1, I-RESTR. L2, I-RESTR. L3		 IL2 Display of measured values in the 2nd line of the quiescent- state indication in 4-line mode
7123 OPER.2nd L.   PRIMARY
SECONDARY
NORMALIZED		 SECONDARY Display of measured values in the 2nd line as primary or secondary (percent) values
7124 OPER.3rd L.   IL1, IL2, IL3, IE
I-DIFF. L1, I-DIFF. L2, I-DIFF. L3
I-RESTR. L1, I-RESTR. L2, I-RESTR. L3		 IL3 Display of measured values in the 3rd line of the quiescent- state indication in 4-line mode
7125 OPER.3rd L.   PRIMARY
SECONDARY
NORMALIZED		 SECONDARY Display of measured values in the 3rd line as primary or secondary (percent) values
7126 OPER.4th L.   IL1, IL2, IL3, IE
I-DIFF. L1, I-DIFF. L2, I-DIFF. L3
I-RESTR. L1, I-RESTR. L2, I-RESTR. L3		 IE Display of measured values in the 4th line of the quiescent- state indication in 4-line mode
7127 OPER.4th L.   PRIMARY
SECONDARY
NORMALIZED		 SECONDARY Display of measured values in the 4th line as primary or secondary (percent) values

PC Port of the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7208 FUNCT. TYPE   1 .. 254 160 Function type in accordance with VDEW/ZVEI
7211 PC INTERF.   DIGSI V3
ASCII		 DIGSI V3 Data format
7215 PC BAUDRATE   1200 Baud
2400 Baud
4800 Baud
9600 Baud
19200 Baud		 9600 Baud Transmission rate for PC poirt
7216 PC PARITY   DIGSI V3
No parity,2 stopbits
No parity,1 stopbit		 DIGSI V3 Parity of transmission telegrams
7233 SYS SUBV.T   1.. 600 s ; +* 120 s Supervision time for system interface

Fault Recording in the Bay Unit (”Local Fault Recording”) – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7402 INITIATION   STORAGE BY FD.
STORAGE BY TRIP
START WITH TRIP		 STORAGE BY TRIP Start/storage criterion for fault recording
7410 T-MAX   0.30 .. 5.00 s 2.00 s Maximum time period available for one fault record
7411 T-PRE   0.05 .. 0.50 s 0.20 s Pre-trigger time for fault recording
7412 T-POST   0.05 .. 0.50 s 0.20 s Post-fault time for stopping the fault recording after the fault criterion disappears
7431 T-BINARY IN   0.10 . .5.00 s
infinite		 0.40 s Storage time when fault recording is initiated via a binary input
7432 T-KEYBOARD   0.10 .. 5.00 s 0.40 s Storage time when fault recording is initiated via the membrane keyboard

Scope of Protective Functions in the Bay Unit – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
112 Bay status   out of service
in service
maintenance		 in service Bay status
5104 FREQUENCY   50 Hz
60 Hz		 50 Hz Nominal frequency

Scope of Protective Functions in the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
7812 CHARAC. PH   Definite time
INVERSE TIME		 Definite time O/C protection characteristic for phase currents
7815 CHARAC. E   DEFINITE TIME
INVERSE TIME		 DEFINITE TIME O/C protection characteristic for the earth current
7899 FREQUENCY   50 Hz
60 Hz		 50 Hz Rated system frequency

Power System Data of the Bay Unit – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
5104 FREQUENCY   50 Hz
60 Hz		 50 Hz Nominal frequency
6106 Tmin TRIP   0.01 .. 32.00 sec 0.15 sec Minimum duration of TRIP command

Power System Data of the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
1101 CT STARPNT   TOWARDS LINE
TOWARDS BUSBAR		 TOWARDS LINE Current transformer polarity lies
1105 In PRIMARY   10 .. 50000 A 400 A Primary rated current
1141 T TRIP   0.01 .. 32.00 sec 0.15 sec Minimum TRIP command duration

Overcurrent Protection in the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
1201 O/C PHASES   ON
OFF		 ON O/C protection for phase currents
1202 I>>   0.05 .. 25.00 IN 2.00 IN Pick-up value of the high-set stage I>>
1203 TI>>   0.00 .. 60.00 s; +* 0.10 s Trip time delay of the high-set stage for phase currents
1206 MEAS.REPET   YES
NO		 NO Option to set a measurement repetition
1211 CHARACTER.   NORMAL INVERSE
VERY INVERSE
EXTREMELY INVERS		 NORMAL IN- VERSE Tripping characteristic for the phase current
1212 I>   0.05 .. 25.00 IN 1.00 IN Pick-up value of the overcurrent stage I>
1213 TI>   0.00 .. 60.00 s; +*
infinite		 0.50 s Trip time delay of the overcurrent stage I>
1214 Ip   0.10 .. 4.00 IN 1.00 IN Pick-up value of the overcurrent stage Ip> for the phase currents
1215 TIp   0.05 .. 10.00 s
0; +*		 0.50 s Time multiplier for phase currents
1216 RMS FORMAT   FUNDAMENTAL
TRUE RMS		 FUNDAMENTAL RMS format for inverse time O/C protection
1221 MAN.CLOSE   I>> UNDELAYED
I> /Ip UNDELAYED
INEFFECTIVE		 I>> UNDELAYED Overcurrent stage valid for phase currents when the circuit breaker is manually closed
1501 O/C EARTH   ON
OFF		 ON O/C protection for the earth current
1502 IE>>   0.05 .. 25.00 IN 0.50 IN Pick-up value of the earth current for the high-set stage
1503 TIE>>   0.00 .. 60.00 s; +* 0.50 s Trip time delay of the high-set current stage for the earth current
1506 MEAS.REPET   YES
NO		 NO Option to set a measurement repetition
1511 CHARACTER.   NORMAL INVERSE
VERY INVERSE
EXTREMELY INVERS		 NORMAL IN- VERSE Tripping characteristic for the earth current
1512 IE>   0.05 .. 25.00 IN 0.20 IN Pick-up value of the earth current for the overcurrent stage
1513 TIE>   0.00 .. 60.00 s; +* 0.50 s Trip time delay of the overcurrent stage for the earth current
1514 IEp   0.10 .. 4.00 IN 0.10 IN Pick-up value of the overcurrent stage IEp for the earth current
1515 TIEp   0.05 .. 10.00 s
0; +*		 0.50 s Time multiplier for earth current
1516 RMS FORMAT   FUNDAMENTAL
TRUE RMS		 FUNDAMENTAL RMS format of the earth current for inverse time O/C protection
1521 MAN.CLOSE   IE>> UNDELAYED
IE> /IEp UNDELAYED
INEFFECTIVE		 IE>> UNDELAYED Overcurrent stage valid for earth current when the circuit breaker is manually closed
7812 CHARAC. PH   SCOPE OF FUNCTIONS DEFINITE TIME Characteristic O/C protection phases
7815 CHARAK. E   SCOPE OF FUNCTIONS DEFINITE TIME Characteristic O/C protection earth

User-Defined Annunciations – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
2801 T-Annunc.1   0.00..10.00 s 0.00 s Delay time for 1st user defined annunciation
2802 T-Annunc.2   0.00..10.00 s 0.00 s Delay time for 2nd user defined annunciation
2803 T-Annunc.3   0.00..10.00 s 0.00 s Delay time for 3rd user defined annunciation
2804 T-Annunc.4   0.00..10.00 s 0.00 s Delay time for 4th user defined annunciation
2811 ANNUN1byCU   NO
YES		 NO Processing of annunciation 1 by central unit
2812 ANNUN2byCU   NO
YES		 NO Processing of annunciation 2 by central unit
2813 ANNUN3byCU   NO
YES		 NO Processing of annunciation 3by central unit
2814 ANNUN4byCU   NO
YES		 NO Processing of annunciation 4 by central unit
2821 ANN1Fct.No   0..9999 0 Binary input annunciation (Fct.no) by annunc.1
2822 ANN2Fct.No   0..9999 0 Binary input annunciation (Fct.no) by annunc.2
2823 ANN3Fct.No   0..9999 0 Binary input annunciation (Fct.no) by annunc.3
2824 ANN4Fct.No   0..9999 0 Binary input annunciation (Fct.no) by annunc.4
2831 ANN1Inp.No   0..9999 0 Input annunciation (no.) for user logic1
2832 ANN2Inp.No   0..9999 0 Input annunciation (no.) for user logic2
2833 ANN3Inp.No   0..9999 0 Input annunciation (no.) for user logic3
2834 ANN4Inp.No   0..9999 0 Input annunciation (no.) for user logic4

Backup Breaker Failure Protection in the Bay Unit – Settings for the Central Unit

Addr. Parameter C Setting Options Default Setting Comments
114 BF BI MODE   1-ch w/o sup
1-ch w sup
2-ch w/o sup
2-ch w sup		 1-ch w sup Binary input mode / supervision BF
115 BF OP MODE   non existent
external
BZ unbalance
trip rep/unbal
I>query
trip rep/I>quer		 BZ unbalance Operation mode BF
121 T-BF-mP   0.05 .. 10.00 s 0.25 s Time delay for BF with multi-pole faults
124 T-BF CB fault   0.00 .. 10.00 s 0.10 s Time delay BF after CB fault

Backup Breaker Failure Protection in the Bay Unit – Settings for the Bay Unit

Addr. Parameter C Setting Options Default Setting Comments
3901 BackUp CBF   ON OFF OFF State of back-up circuit breaker failure protection function
3911 B.U.CBF-I   0.10 .. 4.00 I/In 0.50 I/In Current threshold of back-up breaker failure protection
3912 B.U.CBF-T   0.06 .. 60.00 s; +* 0.12 s Time delay of the back-up breaker failure protection
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