Siemens Siprotec 7UM612 - Stator Earth Fault Protection (ANSI 59 N, 64 G, 67 G)

4 Technical Data
330
7UM61 Manual
C53000-G1176-C127-3
4.16 90-%-Stator Earth Fault Protection (ANSI 59N, 64G, 67G)
Setting Ranges / Increments
Times
Dropout Ratio / Dropout Difference
Tolerances
Influencing Variables
Displacement Voltage U
Earth
2.0 V to 125.0 V Increments 0.1V
Earth current I
Earth
2 mA to 1000 mA Increments 1 mA
Earth current angle criterion 0° to 360° Increments 1°
Delay Time T
SEF
0.00 s to 60.00 s
or ∞ (ineffective)
Increments 0.01 s
The set times are pure delay times.
Pickup Times
U
Earth
I
Earth
directional
approx. 50 ms
approx. 50 ms
approx. 70 ms
Dropout Times
U
Earth
I
Earth
directional
approx. 50 ms
approx. 50 ms
approx. 70 ms
Displacement voltage U
Earth
approx. 0.70
Earth current I
Earth
approx. 0.70
Angle criterion (dropout difference) 10° towards network
Displacement Voltage 1 % of setting value or 0.5 V
Earth current 1 % of setting value or 0.5 mA
Delay times T 1 % of setting value or 10 ms
Power Supply DC Voltage in Range
0,8 ≤ U
PS
/U
PSN
≤ 1.15
≤ 1 %
Temperature in Range
23°F or –5 °C ≤ Θ
amb
≤ 131°F or 55 °C
≤ 0.5 % / 10 K
Frequency in Range
0,95 ≤ f/f
N
≤ 1.05
≤ 1 %
Harmonics
– Up to 10 % 3rd harmonic
– Up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
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