37Sef Undercurrent; Reference; Operate And Reset Level - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 Performance Specification
2.6 37G & 37SEF Undercurrent
2.6.1

Reference

Parameter
Is Setting
t Delay setting
d
2.6.2

Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
Variation
2.6.3 Operate and Reset Time
Attribute
t Element basic operate time
basic
t Operate time following delay
op
Repeatability
Overshoot time
Disengaging time
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-10 °C to +55 °C
+ 2 Hz £ 5 %
f - 3 Hz to f
nom nom
Value
0.005, 0.10...5.0 xIn
0.00, 0.01...20.00, 20.50... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % Is, ± 5 % or ± 1% In
£ 105 % I ± 0.1 % In
or I
op op
± 1 %
£ 5 %
Value
1.1 to 0.5 xIs: 35 ms, ± 10 ms
, ± 1 % or ± 10 ms
t + t
basic d
± 1 % or ± 10 ms
< 40 ms
< 60 ms
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