Features
7
7SS52 V4 Manual
C53000-G1176-C182-3
•
Circuit breaker failure protection (CBF), selectable per bay, for low-current faults in
the variants
−
I
>
query (1-stage CBF)
−
TRIP repetition with overcurrent detection I
>
(2-stage CBF)
−
Unbalancing (1-stage CBF)
−
TRIP repetition with following unbalancing (2-stage CBF)
−
Single-pole or three-pole start by external breaker failure protection and tripping
via the isolator replica
•
Direct operation of the circuit breaker by the bay unit
•
Direct tripping of busbar sections via binary inputs of the central unit
Figure 1-2 Pick-up characteristics of the busbar and breaker failure protection (unbalancing)
Figure 1-3 Earth fault characteristic
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Содержание SIPROTEC 7SS522 V4.6
Страница 326: ...Maintenance and Repair 310 7SS52 V4 Manual C53000 G1176 C182 3 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 432: ...Appendix 416 7SS52 V4 Manual C53000 G1176 C182 3 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 438: ...Index 422 7SS52 V4 Manual C53000 G1176 C182 34 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...