50Bf Circuit Breaker Fail; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR224 Technical Manual

3.2

50BF Circuit Breaker Fail

3.2.1 Reference

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

3.2.2 Operate and Reset Level

Attribute
I Operate level
op
I Reset level
reset
Repeatability
-10 °C to +55 °C
Variation
f
nom

3.2.3 Operate and Reset Time

Attribute
t Element basic operate time
basic
Stage 1
t
op
Stage 2
Repeatability
Overshoot
Disengaging time
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Value
0.005, 0.010... 2.0 xIn
0, 2, 0.205... 60000ms
0, 2, 0.205... 60000ms
Value
100 % Is, ± 5 % or ± 1% In
<100 % I
± 1 %
≤ 5 %
+ 2 Hz ≤ 5 %
- 3 Hz to f
nom
Value
< 20ms
, ± 1 % or ± 20ms
t
CBF1
, ± 1 % or ± 20ms
t
CBF2
± 1 % or ± 20ms
< 2 x 20ms
< 20ms
7SR224 Argus Performance Specification
, ± 5 % or ± 1% In
op
Chapter 3 Page 42 of 49