Section 3: Supervision Functions; 46Bc & 46Bc U/C Broken Conductor; Reference; Operate And Reset Level - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 Performance Specification

Section 3: Supervision Functions

3.1 46BC & 46BC U/C Broken Conductor
3.1.1

Reference

Setting (NPS to PPS ratio)
U/C Guard setting
t Delay setting
f
3.1.2

Operate and Reset Level

I Operate level
curr
Reset level
Repeatability
Variation
3.1.3

Operate and Reset Time

t Basic operate time 1x In to 0 A
basic
Operate time
Repeatability
Variation
Unrestricted Page 56 of 68
Parameter
Attribute
- 10 °C to + 55 °C
f - 3 Hz to f + 2 Hz
nom nom
harmonics to f
cutoff
Attribute
f - 3 Hz to f + 2 Hz
nom nom
harmonics to f
cutoff
20...100 %
0.05, 0.1 ... 4.95, 5
0.02...1000 s
± 5 %
100 % I
set
± 5 %
90 % I
curr ,
± 1 %
£ 5 %
£ 5 %
40 ms
, ± 1 % or ± 20 ms
t + t
f basic
± 1 % or ± 20 ms
£ 5 %
© 2013 Siemens Protection Devices Limited
Value
Value
Value