Section 3: Supervision Functions; 50Bf Circuit Breaker Fail; Reference; Operate And Reset Level - Siemens 7SR242 Duobias Technical Manual

Section 3: Supervision Functions

3.1

50BF Circuit Breaker Fail

3.1.1 Reference

Parameter
Is Setting: 50BF-n
Is Setting: 50BF-n-I4
t Stage 1 Delay setting
CBF1
t Stage 2 Delay setting
CBF2

3.1.2 Operate and Reset Level

Attribute
I Operate level
op
I Reset level
reset
Repeatability
Variation

3.1.3 Operate and Reset Time

Attribute
t Element basic operate time
basic
Stage 1
t
op
Stage 2
Repeatability
Overshoot
Disengaging time
©2015 Siemens Protection Devices Limited
-10 °C to +55 °C
f - 3 Hz to f + 2 Hz
nom nom
Chapter 3) 7SR242 Duobias Performance Specification
Value
0.050, 0.055... 2.0 xIn
0.005, 0.010... 2.0 xIn
0, 5... 60000ms
0, 5... 60000ms
Value
100 % Is, 5 % or 1% In
100 % I , 5 % or 1% In
op
1 %
5 %
5 %
Value
< 20ms
t , 1 % or 20ms
CBF1
t , 1 % or 20ms
CBF2
1 % or 20ms
< 2 x 20ms
< 20ms
Chapter 3 Page 47 of 50