Voltage Controlled Overcurrent; Reference; Operate And Reset Level - Siemens 7SR224 Technical Manual

2.12 51V Voltage Controlled Overcurrent

2.12.1 Reference

Parameter
Setting
Vs
m multiplier
Is Setting

2.12.2 Operate and Reset Level

Attribute
V Operate level
op
Reset level
Repeatability
-10 °C to +55 °C
f
nom
Variation
harmonics to f
Operate and Reset Time
As per Phase Fault Shaped Characteristic Element (ANSI 51).
Where Pickup Level = Is for Voltage > Vs
Pickup Level = (Is x m) for Voltage < Vs
©2010 Siemens Protection Devices Limited
Value
60V
0.5
1xIn
Value
100 % Vs, ± 1 % or ± 0.25V
≤ 105 % V
± 1 %
≤ 5 %
- 3 Hz
to f + 2 Hz
nom
≤ 5 %
cutoff
7SR224 Argus Performance Specification
op
Chapter 3 Page 35 of 49