Instantaneous Measured Earth Fault; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR224 Technical Manual

2.7 50G Instantaneous Measured Earth Fault
2.7.1

Reference

Parameter
Is Setting
I Applied Current (for operate time)
t Delay setting
d
2.7.2

Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
Transient overreach
(X/R ≤ 100)
-10 °C to +55 °C
Variation
f
nom
2.7.3

Operate and Reset Time

Attribute
t Element basic operate time
basic
t Operate time following delay
op
Repeatability
Overshoot time
Disengaging time
©2010 Siemens Protection Devices Limited
Value
0.005, 0.006 ...0.1, 0.105 .. 2.5, 2.55 ... 25 xIn
5 x Is
0.00, 0.01...20.00, 20.50... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % Is, ± 5 % or ± 1% In
≥ 95 % I
± 1 %
≤ -5 %
≤ 5 %
+ 2 Hz ≤ 5 %
- 3 Hz to f
nom
Value
0 to 2 xIs: 35 ms, ± 10ms
0 to 5 xIs: 25 ms, ± 10ms
t + t
basic
± 1 % or ± 10ms
< 40 ms
< 50 ms
7SR224 Argus Performance Specification
op
, ± 1 % or ± 10ms
d
Chapter 3 Page 24 of 49