Restricted Earth Fault Protection; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR12 Argus Manual

7SR11 & 7SR12 Performance Specification
2.20 64H Restricted Earth Fault Protection

Reference

2.20.1
Parameter
Is Setting
t Delay setting
d

Operate and Reset Level

2.20.2
Attribute
I Operate level
op
Reset level
Repeatability
Transient overreach
(X/R ≤ 100)
Variation

Operate and Reset Time

2.20.3
Attribute
t Element basic operate time
basic
t Operate time following delay
op
Repeatability
Overshoot time
Disengaging time
©2017 Siemens Protection Devices Limited
-10 °C to +55 °C
f ± 5 %
nom
Value
0.005, 0.006 ... 0.100, 0.105 ... 0.950 xIn
SEF Input
0.05, 0.055.... 0.95 xIn
EF Input
0.00, 0.01...20.00, 20.10... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % Is, ± 5 % or ±1% xIn
, ± 5 % or ±0.1% xIn
95 % I
op
± 1 %
≤ -5 %
≤ 5 %
≤ 5 %
Value
0 to 2 xIs, 45 ms, ± 10ms
0 to 5 xIs, 35 ms, ± 10ms
, ± 1% or ± 10ms
t + t
basic d
± 1% or ± 10ms
< 40 ms
< 50 ms
Chapter 3 Page 48 of 56