Controlling Device Functions
235
7SS52 V4 Manual
C53000-G1176-C182-3
Figure 6-20 Deleting annunciations of a bay unit in DIGSI.
Click RESETTING STORED DATA.
Click Execute. Next a security prompt takes place.
Click Yes to delete the data.
6.3.4 Circuit Breaker Test
You can test the trip circuits and circuit breakers during operation by applying an on-
off circuit via the corresponding bay unit. You can also use DIGSI to test the circuit
breakers or directly via the operator panel of the bay unit.
The following prerequisites must be met:
• The necessary test commands CB Test L1 to CB Test L3 (7636/BU to 7638/
BU) have been configured to the command relays.
• The feeder current must not exceed the set limit I> MAN TRIP (6316/CU)
As is shown in Figure 6-21, page 236, the circuit breaker test of the bay unit can be
triggered by the following actions:
• by applying the F2 function key (3-phase),
• via binary input “>CB Test” (FNo. 1156/BU) (3-phase),
• via the parameter CB TEST LIVE TRIP (4400/BU) (1- and 3-phase).
The command for the circuit breaker test is reset after a fixed time of 2 s.
DANGER!
A successfully launched test cycle may cause the circuit breaker to close if an external
automatic reclosing device exists!
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