Siemens Argus 7SR21 - Section 3: Supervision Functions; 46 BC & 46 BC U;C Broken Conductor; Operate and Reset Level; Operate and Reset Time

7SR21 & 7SR22 Performance Specification
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Section 3: Supervision Functions
3.1 46BC & 46BC U/C Broken Conductor
3.1.1 Reference
Parameter Value
Setting (NPS to PPS ratio) 20…100 %
U/C Guard setting 0.05, 0.1 ... 4.95, 5
t
f
Delay setting 0.02…1000 s
3.1.2 Operate and Reset Level
Attribute Value
I
curr
Operate level
100 % I
set
± 5 %
Reset level
90 % I
curr ,
± 5 %
Repeatability
± 1 %
Variation
- 10 °C to + 55 °C
£ 5 %
f
nom
- 3 Hz to f
nom
+ 2 Hz
harmonics to f
cutoff
£ 5 %
3.1.3 Operate and Reset Time
Attribute Value
t
basic
Basic operate time 1x In to 0 A 40 ms
Operate time
t
f
+ t
basic
, ± 1 % or ± 20 ms
Repeatability
± 1 % or ± 20 ms
Variation
f
nom
- 3 Hz to f
nom
+ 2 Hz
harmonics to f
cutoff
£ 5 %