Siemens 7SR12 Argus User Manual

7SR11 & 7SR12 Commissioning and Maintenance Guide
©2017 Siemens Protection Devices Limited Chapter 6 Page 61 of 72
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 □
3.1.1 Element Blocking
The CB Fail function can be blocked by Binary Input Inhibit. This functionality should be checked.
Element
BI Inhibits
50BF

Siemens 7SR12 Argus Specifications

General

Brand	Siemens
Model	7SR12 Argus
Category	Protection Device
Language	English