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Siemens SIPROTEC 7SS522 V4.6 User Manual

Siemens SIPROTEC 7SS522 V4.6
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Appendix
342
7SS52 V4 Manual
C53000-G1176-C182-3
A.3 Connection Diagrams
Figure A-3 Connection diagram central unit (continued in Figure A-4, page 343)
Legend:
BI: Binary Input
CZ: Check zone
BU: Bay unit
I-DIFF: Differential current
I-SUM: Summation current
CB: Circuit breaker
M: Alarm reley
BZ: Bus zone
BF: Breaker failure
ISO: Isolator
CU: Central unit
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Siemens SIPROTEC 7SS522 V4.6 Specifications

General IconGeneral
BrandSiemens
ModelSIPROTEC 7SS522 V4.6
CategoryPower distribution unit
LanguageEnglish

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