50Bf Circuit Breaker Fail; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR12 Argus Manual

3.2

50BF Circuit Breaker Fail

Reference

3.2.1
Parameter
Is Setting
I4 Setting
t Stage 1 Delay setting
CBF1
t Stage 2 Delay setting
CBF2

Operate and Reset Level

3.2.2
Attribute
I
Operate level
op
I Reset level
reset
Repeatability
Variation

Operate and Reset Time

3.2.3
Attribute
Stage 1
t
op
Stage 2
Repeatability
Overshoot
Disengaging time
©2017 Siemens Protection Devices Limited
-10 °C to +55 °C
f ± 5 %
nom
7SR11 & 7SR12 Performance Specification
Value
0.050, 0.055... 2.0 xIn
0.050, 0.055... 2.0 xIn
20, 25... 60000ms
20, 25... 60000ms
Value
100 % Is, ± 5 % or ± 1% In
<100 % I , ± 5 % or ± 1% In
op
± 1 %
≤ 5 %
≤ 5 %
Value
, ± 1 % or ± 20ms
t
CBF1
, ± 1 % or ± 20ms
t
CBF2
± 1 % or ± 20ms
< 2 x 20ms
< 20ms
Chapter 3 Page 53 of 56