50Sef Instantaneous Sensitive Earth Fault; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR10 Argus Series Manual

2.11 50SEF Instantaneous Sensitive Earth Fault

2.11.1 Reference

Parameter
Is Setting
t Delay setting
d

2.11.2 Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
Transient overreach
(X/R ≤ 100)
Variation

2.11.3 Operate and Reset Time

Attribute
t Element basic operate time
basic
t Operate time following delay
op
Repeatability
Overshoot time
Disengaging time
Variation
#
The operating timings are measured on the basis of fundamental measurement algorithm, with protection
functions and communication ports configured in the relay.
© 2018 Siemens Protection Devices Limited
-10 °C to +60 °C
f ± 5 %
nom
harmonics to f
cutoff
#
f ± 5 %
nom
Value
0.005, 0.006,0.010,0.105,... 5.0xI
0.00, 0.01...20.00, 20.10... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % I , ± 5 % or ± 1 % I
s
≥ 95 % I or I - 0.1 % I
op op
± 1 %
≤ -5 %
≤ 5 %
≤ 5 %
Value
0 to 2xI : 35 ms, ± 10 ms
s
0 to 5xI : 25 ms, ± 10 ms
s
t + t , ± 1 % or ± 10 ms
basic d
± 1 % or ± 10 ms
< 40 ms
< 50 ms
≤ 5 %
7SR10 Performance Specification
n
n
n
Chapter 3 Page 27 of 52