7SR21 & 7SR22 Performance Specification
3.6
81HBL2 Inrush Detector
3.6.1
Reference
Parameter
Setting
I
(Ratio of 2nd Harmonic current to
Fundamental component current)
3.6.2
Operate and Reset Level
Attribute
I
Operate level
op
Reset level
Repeatability
Variation
3.6.3
Operate and Reset Time
Attribute
t
Element basic operate time
basic
Reset Time
Unrestricted Page 62 of 68
- 10 °C to + 55 °C
+ 2 Hz £ 5 %
f
- 3 Hz to f
nom
nom
Value
0.10, 0.11... 0.5
Value
100 % I, ± 4 % or ± 1 % In
, ± 4 % or ± 1 % In
100 % I
op
± 1 %
£ 5 %
Value
Will pick-up before operation of any protection element due
to magnetic inrush
Will operation until drop-off of any protection element due
to magnetic inrush
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