Stator Earth Fault Protection With 20 Hz Voltage Injection (Ansi 64G, -100 %) - Siemens Siprotec 7UM62 Manual

4.24 100–% Stator Earth Fault Protection with 20 Hz Voltage Injection (ANSI 64G, –100 %)
4.24 100–% Stator Earth Fault Protection with 20 Hz Voltage Injection
(ANSI 64G, –100 %)
Setting Ranges/
Resolution
Inherent Operating
Times
Dropout
Tolerances
Influencing
Variables for
Pickup
7UM62 Manual
C53000-G1176-C149-3
Alarm Stage R <
SEF
Tripping Stage R <<
SEF
Earth Currrent StageI
SEF
Delay Time
Supervision Threshold of 20 HZ Voltage
U20
I20
Correction Angle
Pickup Time R <, R
SEF SEF
Pickup Time I >
SEF
Dropout Time R <, R
SEF
Dropout Time I >
SEF
Dropout/Pickup Ratio
Resistance
Current
Delay Time
Power Supply Direct Voltage in Range
0.8 ≤ U ≤ 1.15
/U
H HN
Temperature in Range
–5 °C ≤ ϑ ≤ 55 °C
amb
Frequency in Range
0.95 ≤ f/f ≤ 1.05
N
Harmonics
– Up to 10 % 3rd Harmonics
– Up to 10 % 5th Harmonics
20 to 700 Ω
20 to 700 Ω
> 0.02 to 1.50 A
0.00 to 60.00 s
0.3 to 15.0 V
5 to 40 mA
–60° to +60°
≤ 1.3 s
<<
≤ 250 ms
≤ 0.8 s
<<
SEF
≤ 120 s
Approx. 1.2 to 1.7
Approx. 5 % or 2 Ω
3 % or 3 mA
1 % or 10 ms
≤ 1 %
≤ 0.5 %/10 K
≤ 1 %
≤ 1 %
≤ 1 %
(Increments 1 Ω)
(Increments 1 Ω)
(Increments 0.01 A)
(Increments 0.01 s
or ∞ (does not expire))
(Increments 0.1 V)
(Increments 1 mA)
(Increments 1°)
439