67/67N/67G/67Sef Directional Overcurrent & Earth Fault; Reference; Operate Angle; Operate Threshold - Siemens 7SR10 Argus Series Manual

2.20 67/67N/67G/67SEF Directional Overcurrent & Earth Fault

2.20.1 Reference

Parameter
θ Angle setting
s
I Applied current
V Applied voltage

2.20.2 Operate Angle

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

2.20.3 Operate Threshold

Attribute
Minimum levels for
operation

2.20.4 Operate and Reset Time

Attribute
Operate time
Reset time
© 2018 Siemens Protection Devices Limited
forward
reverse
10 °C to +60 °C
f ± 5 %
nom
I (p/f)
I (e/f)
I (SEF)
V (p/f)
V (e/f)
Value
-95...+95 °
In
110 V phase-phase (63.5 V phase-earth)
Value
θ , ± 5 °
s
CA - 85 ° ± 5 ° to CA + 85 ° ± 5 °
(CA - 180°) – 85 ° ± 5 ° to (CA - 180°) + 85 ° ± 5 °
± 5 °
± 5 °
Value
> 10 % I
n
> 10 % I
n
> 5 % I
n
> 3 V
> 3 V
Value
typically 32, < 40 ms at characteristic angle
+ 50/51/50G/51G/50SEF/51SEF/50N/51N element
operate time
typically < 65 ms at characteristic angle
7SR10 Performance Specification
Chapter 3 Page 45 of 52