Siemens SIPROTEC 7UM62 - 4.21 90-%-Stator Earth Fault Protection (ANSI 59 N, 64 G, 67 G)

Technical Data
4.21 90-%-Stator Earth Fault Protection (ANSI 59N, 64G, 67G)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
496
4.21 90-%-Stator Earth Fault Protection (ANSI 59N, 64G, 67G)
Setting Ranges / Increments
Times
Dropout Ratio / Dropout Difference
Tolerances
Influencing Variables
Displacement voltage U0> 2.0 V to 125.0 V Increments 0.1 V
Earth current 3I0> 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
U0
3I0
directional
approx. 50 ms
approx. 50 ms
approx. 70 ms
Dropout Times
U0
3I0
directional
approx. 50 ms
approx. 50 ms
approx. 70 ms
Displacement voltage U0 approx. 0.70
Earth current 3I0 approx. 0.70 or 1 mA
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 direct voltage in range 0.8 ≤ U
Aux
/U
AuxN
≤ 1.15 ≤ 1 %
Temperature in range 23.00 °F (–5 °C) ≤ Θ
amb
≤ 131.00 °F (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 %