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

2.2

37 Undercurrent

2.2.2

Reference

Parameter
Is Setting
t Delay setting
d
2.2.3

Operate and Reset Level

Attribute
I Operate level
op
Reset level
Repeatability
-10 °C to +55 °C
Variation
f
nom
2.2.4

Operate and Reset Time

Attribute
Element basic operate time
t
basic
t Operate time following delay
op
Repeatability
Overshoot time
Disengaging time
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Value
0.05, 0.10...5.0 xIn
0.00, 0.01...20.00, 20.50... 100, 101... 1000, 1010...
10000, 10100... 14400 s
Value
100 % Is, ± 5 % or ± 1% In
≤ 105 % I
± 1 %
≤ 5 %
+ 2 Hz ≤ 5 %
- 3 Hz to f
nom
Value
1.1 to 0.5 xIs: 35 ms, ± 10ms
t + t
basic
± 1 % or ± 10ms
< 40 ms
< 60 ms
7SR224 Argus Performance Specification
op
, ± 1 % or ± 10ms
d
Chapter 3 Page 17 of 49