Time Delayed Overcurrent; Reference; Operate And Reset Level - Siemens 7SR224 Technical Manual

2.9

51 Time Delayed Overcurrent

2.9.1

Reference

Parameter
Is Setting
char Characteristic setting
Tm Time Multiplier setting
Applied current
I
(for operate time)
t Delay setting
d
t Reset setting
res
2.9.2

Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
-10 °C to +55 °C
Variation
f
nom
©2010 Siemens Protection Devices Limited
Value
0.05, 0.06... 2.5 xIn
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
Manufacturer specific curves
See 'Performance Specification Appendix 1'
0.025, 0.05... 1.6
2 to 20 xIs
IDMTL
DTL
5 xIs
0, 0.01... 20 s
ANSI DECAYING, 0, 1... 60 s
Value
105 % Is, ± 4 % or ± 1% In
≥ 95 % I
± 1 %
≤ 5 %
+ 2 Hz ≤ 5 %
- 3 Hz to f
nom
7SR224 Argus Performance Specification
op
Chapter 3 Page 26 of 49