7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited
Page 45 of 68
2.17 51SEF Time Delayed Sensitive Earth Fault
2.17.1 Reference
Parameter
Value
Is
Setting
0.005, 0.006…1 x
In
char
Characteristic setting
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
Tm
Time multiplier
1.0
t
d
Delay setting
0.00…20.00 s
t
res
Reset setting
DECAYING, 0, 1…60 s
I
Applied current (for
operate time)
IDMTL
2 to 20x
Is
DTL
5 x
Is
2.17.2 Operate and Reset Level
Attribute
Value
I
op
Operate level
105 %
Is
,
±
4 % or
±
1% In
Reset level
³
95 %
I
op
±
4 % or
±
1% In
Repeatability
±
1 %
Variation
-10 °C to +55 °C
£
5 %
f
nom
- 3 Hz
to
f
nom
+ 2 Hz
harmonics to
f
cutoff
£
5 %
Summary of Contents for Argus 7SR21
Page 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...Contents 7SR11 and 7SR12 Page 2 of 2 2018 Siemens Protection Devices Limited ...
Page 185: ...7SR210 Settings Guide Unrestricted 2018 Siemens Protection Devices Limited Page 61 of 61 ...
Page 277: ...7SR220 Settings Guide Unrestricted Page 72 of 107 2013 Siemens Protection Devices Limited ...
Page 382: ...7SR220 Technical Manual Chapter 4 Page 2 of 96 2017 Siemens Protection Devices Limited ...
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