Supervisory Functions
149
7SS52 V4 Manual
C53000-G1176-C182-3
Figure 5-34 Annunciations and behaviour of the blocking in the case of isolator malfunction and acknowledgement
The following applies for the isolator position:
Blocking occurs only when the bay with the Isolator position fault is assigned to a busbar.
An alarm is generated, e.g. "
$01 $02
" (
FNo. 176.1110/CU
,
176.1115/CU,176.1120/
CU,176.1125/CU,176.1130/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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