Operate And Reset Level; Power Factor; Reference; Operate And Reset Time - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 Performance Specification

2.19 55 Power Factor

2.19.1 Reference

Parameter
55-n Setting
PF
s
t 55-n Delay setting
d

2.19.2 Operate and Reset Level

Attribute
PF Operate Level
op
Reset Level
Repeatability
Variation

2.19.3 Operate and Reset Time

Attribute
t Element basic operate time
basic
t Operate time following delay
op
Disengaging time

2.19.4 Operate Threshold

Attribute
Minimum levels for
operation
Unrestricted Page 48 of 68
Under PF
Over PF
-10 °C to +55 °C
+ 2 Hz ± 0.05
f – 3 Hz to f
nom nom
I
V
Value
0.05...0.99
0.00 ... 14400 s
Value
± 0.05
PF
s
£PF
+ 0.02
op
³PF
- 0.02
op
± 0.05
± 0.05
Value
£ 70 ms
, ± 1 % or ± 10ms
t + t
basic d
< 80 ms
Value
2.5 % In
2.5% Vn
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