Siemens 7SR18 Solkor - Element Blocking

7SR18 Commissioning & Maintenance Guide
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of
50BF Setting (xIn) Test Current 50BF-1 Delay…………… 50BF-2 Delay……………….
(110%)………….
(90%)…………... No Operation No Operation
50BF CB Faulty Operation No Delay Operation No Delay
50BF-I4 Setting
(xIn)
Test Current 50BF-1 Delay…………… 50BF-2 Delay……………….
(110%)………….
(90%)…………... No Operation No Operation
50BF CB Faulty Operation No Delay Operation No Delay
If the circuit breaker can also receive a trip signal from a protection function where there is no increase in current,
this trip input should be mapped to 50BF Mech Trip in the INPUT CONFIG>INPUT MATRIX menu.
Initiate this binary input and simulate the circuit breaker remaining closed by ensuring the CB Closed binary Input
is energised and ensure operation of the 50BF-1 and 50BF-2 outputs after their programmed delays.
50BF Mech Trip 50BF-1 Delay…………… 50BF-2 Delay……………….
CB Closed
CB Open No Operation No Operation
4.1.1 ELEMENT BLOCKING
The CB Fail function can be blocked by Binary Input Inhibit. This functionality should be checked.
Element BI Inhibits
50BF