Siemens SIPROTEC 7UM62 - Page 519

Technical Data
4.37 Additional Functions
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
519
Amplitude of Rotor Voltage Injec-
tion
U
gen
in V
Range 0.0 V to 60.0 V
Tolerance 0.5 V
Rotor Circuit Current I
N, Gen
in mA
Range 0.00 mA to 20.00 mA
Tolerance 0.05 mA
Charge at Polarity Reversal Q
C
in mAs
Range 0.00 mAs to 1.00 mAs
Tolerance 0.01 mAs
Rotor Earth Resistance R
Earth
in kΩ
Range 0.0 kΩ to 999.9 kΩ
Tolerance < 5 % or 0.5 kΩ
for R
earth
< 100 kΩ and for C
e
< 1µF
< 10 % or 0.5 kΩ
for R
earth
< 100 kΩ and for C
e
< 4µF
Operational measured values of 100-%-Stator Earth Fault Protection (20 Hz)
Stator circuit bias voltage U
SEF
in V
Range 0.0 V to 200.0 V
Tolerance 0.2 % of measured value,
or ± 0.2 V ± 1 digit
Earth Current of Stator Circuit I
SEF
in A
Range 0.0 mA to 1600.0 mA
Tolerance 0.2 % of measured value,
or ± 0.1 mA ± 1 digit
20 Hz Phase Angle ϕ
SEF
in °
Range – 180.0° to +180.0°
Tolerance 1.0 %
Stator Earth Resistance (sec.) R
SEF
in Ω
Range 0 Ω up to 9999 Ω
Tolerance 5 % or 2 Ω
Stator Earth Resistance (prim.) R
SEFP
in Ω
Range 0 kΩ to 9999.99 kΩ
Tolerance 5 % or (5 kΩ · conversion factor)