Sensitive Earth Fault Protection B (Ansi 51Gn) - Siemens SIPROTEC 7UM62 Manual

Technical Data

4.25 Sensitive Earth Fault Protection B (ANSI 51GN)

4.25 Sensitive Earth Fault Protection B (ANSI 51GN)
Setting Ranges / Increments
Pickup Current I
Delay Time T
Pickup Current I
Delay Time T
Pickup Seal-In Time IeeB>
Pickup Seal-In Time IeeB<
Measurement Method when Used as Rotor Earth Fault
Protection
Times
Pick-up times
Dropout times
Drop-off to pick-up ratio
Pickup Current I
I <
Ns-B
Tolerances
Pickup current
Time delay
Influencing Variables
Power supply direct voltage in range 0.8 ≤ U
Temperature in range 23.00 °F (–5 °C) ≤ Θ
Frequency in range 0.95 ≤ f/f
Harmonics
- Up to 10 % 3rd harmonic
- Up to 10 % 5th harmonic
500
>
EE-B
>
IEE-B
<
EE-B
>
IEE-B
>
EE-B
≤ 1.05
N
0.3 mA to 1000.0 mA
0.00 s to 60.00 s
or ∞ (ineffective)
0.3 mA to 500.0 mA
or 0 (ineffective)
0.00 s to 60.00 s
or ∞ (ineffective)
0.00 s to 60.00 s
0.00 s to 60.00 s
- Fundamental
- 3. Harmonics
- 1. and 3rd harmonic
approx. 50 ms
approx. 50 ms
approx. 0.90 or 0.15 mA
approx. 1.10 or 0.15 mA
1 % of setting value or 0.1 mA
1 % of set value or 10 ms
/U ≤ 1.15 ≤ 1 %
Aux AuxN
≤ 131.00 °F (55 °C) ≤ 0.5 %/10 K
amb
≤ 1 %
≤ 1 %
≤ 1 %
C53000-G1176-C149-7, Release date 03.2010
Increments 0.1 mA
Increments 0.01 s
Increments 0.1 mA
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
SIPROTEC, 7UM62, Manual