Operate And Reset Level; Time Delayed Measured Earth Fault; Reference - Siemens Argus 7SR21 Technical Manual

2.15 51G Time Delayed Measured Earth Fault

2.15.1 Reference

Parameter
Is Setting
Char Characteristic setting
Tm Time Multiplier setting
t Delay setting (DTL)
d
t Reset setting
res
Applied current (for
I
operate time)

2.15.2 Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
-10 °C to +55 °C
Variation
f
nom
Unrestricted © 2013 Siemens Protection Devices Limited
Value
0.005, 0.006... 1.0 xIn
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
0.025, 0.05... 1.6
0, 0.01... 20 s
ANSI DECAYING, 0, 1... 60 s
IDMTL 2 to 20 xIs
DTL 5 xIs
Value
105 % Is, ± 4 % or ± 1% In
³ 95 % I
± 1 %
£ 5 %
+ 2 Hz £ 5 %
- 3 Hz to f
nom
7SR21 & 7SR22 Performance Specification
op
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