Siemens 7SR18 Solkor - 67;67 N Directional Overcurrent & Earth Fault; Reference; Operate Angle; Operate Threshold

7SR18 Performance Specification
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2.10 67/67N Directional Overcurrent & Earth Fault
2.10.1 Reference
Parameter Value
θ
s
Angle setting -95…+95
°
I
Applied current
In
V Applied voltage 110 V phase-phase (63.5 V phase-earth)
2.10.2 Operate Angle
Attribute Value
CA
Characteristic angle (I with respect
to V)
θ
s
, ± 5 °
Operating angle
forward
CA - 85 ° ± 5 ° to CA + 85° ± 5 °
reverse (CA - 180°) - 85° ± 5 ° to (CA - 180°) + 85° ± 5 °
Variation in
characteristic
angle
10°C to +55°C ± 5 °
f
nom
± 5 %
± 5 °
2.10.3 Operate Threshold
Attribute Value
Minimum levels for
operation
I (p/f) > 5 % In
I (e/f) > 10 % In
V (p/f) > 1 V
V (e/f) > 1 V
2.10.4 Operate and Reset Time
Attribute Value
Operate time
typically 32 < 40 ms at characteristic angle + element
operate time
Reset time typically < 65 ms at characteristic angle