67/67N Directional Overcurrent & Earth Fault; Reference; Operate Angle; Operate Threshold - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 Performance Specification
2.22 67/67N Directional Overcurrent & Earth Fault

2.22.1 Reference

Parameter
u
Angle setting
s
I Applied current
V Applied voltage

2.22.2 Operate Angle

Attribute
Characteristic angle (I with respect
CA
to V)
Operating angle
Variation in
characteristic
angle

2.22.3 Operate Threshold

Attribute
Minimum levels for
operation

2.22.4 Operate and Reset Time

Attribute
Operate time
Reset time
Unrestricted Page 52 of 68
forward
reverse
10°C to +55°C
f - 3 Hz to f + 2 Hz
nom nom
I (p/f)
I (e/f)
V (p/f)
V (e/f)
Value
typically 25 < 40 ms at characteristic angle
typically < 65 ms at characteristic angle
Value
-95...+95 °
In
110 V phase-phase (63.5 V phase-earth)
Value
u
, ± 5 °
s
CA - 85 ° ± 5 ° to CA + 85° ± 5 °
(CA - 180°) - 85° ± 5 ° to (CA - 180°) + 85° ± 5 °
± 5 °
± 5 °
Value
> 5 % In
> 10 % In
> 1 V
> 1 V
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