7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited
Page 51 of 68
2.21 64H Restricted Earth Fault Protection
2.21.1 Reference
Parameter
Value
Is
Setting
0.005, 0.006… 0.95 x
In
t
d
Delay setting
0.00, 0.01… 20.0, 20.1… 100.0, 101.…1000, 1010 …
10000 , 10100 … 14400 s
2.21.2 Operate and Reset Level
Attribute
Value
I
op
Operate level
100 %
Is
,
±
5 % or
±
1 %
xIn
Reset level
95 %
I
op
,
±
5 % or
±
0.1 %
xIn
Repeatability
±
1 %
Transient overreach
(X/R
£
100)
£
-5 %
Variation
-10 °C to +55 °C
£
5 %
f
nom
- 3 Hz to
f
nom
+ 2 Hz
£
5 %
2.21.3 Operate and Reset Time
Attribute
Value
t
basic
Element basic operate time
t
op
Operate time following delay
t
basic
+
t
d
,
±
1% or
±
10 ms
Repeatability
±
1% or
±
10 ms
Overshoot time
< 40 ms
Disengaging time
< 50 ms
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 ...
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