7SR10 Performance Specification
© 2018 Siemens Protection Devices Limited
Chapter 3 Page 26 of 52
2.10 50N Instantaneous Derived Earth Fault
2.10.1 Reference
Parameter
Value
Is
Setting
0.05, 0.06…2.5,2.55 …25.0,25.5…. 50xI
n
t
d
Delay setting
0.00, 0.01…20.00, 20.10… 100, 101… 1000, 1010…
10000, 10100… 14400 s
2.10.2 Operate and Reset Level
Attribute
Value
I
op
Operate level
100 % I
s
,
±
5 % or
±
1 % I
n
Reset level
≥
95 % I
op
Repeatability
±
1 %
Transient overreach
(X/R
≤
100)
≤
-5 %
Variation
-10 °C to +60 °C
≤
5 %
f
nom
± 5 %
≤
5 %
2.10.3 Operate and Reset Time
Attribute
Value
t
basic
Element basic operate time
#
0 to 2xI
s
: 40 ms,
±
10 ms
0 to 5xI
s
: 30 ms,
±
10 ms
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
< 57 ms
#
The operating timings are measured on the basis of fundamental measurement algorithm, with protection
functions and communication ports configured in the relay.
Содержание 7SR10 Argus Series
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