Supervisory Functions
147
7SS52 V4 Manual
C53000-G1176-C182-1
Figure 5-37 Annunciations and behaviour of the blocking in the case of isolator malfunction and acknowledgement
The following applies for the isolator position:
A blocking is only carried out if the bay is assigned to a busbar because of the intermediate position,
i.e. the isolator is “CLOSED“.
An alarm is generated, e.g. "$01 $02" (FNo. 176.1110/CU - 176.1113/CU).
a) 1-1 Position t
v
= 500 ms 6304/CU is effective
During the delay time t
v
the old isolator position is kept.
b) 0-0 Exceeding of the runtime t
v
= 6301/CU (isolator in “CLOSED“ position)
The isolator position “CLOSED” is kept.
c) 0-0 Auxiliary voltage failure t
v
= 500 ms 6303/CU is effective
During the delay time t
v
the old isolator position is kept.
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