Siemens SIPROTEC 7UM62 - 4.27 Rotor Earth Fault Protection R, fn (ANSI 64 R)

Technical Data
4.27 Rotor Earth Fault Protection R, fn (ANSI 64R)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
502
4.27 Rotor Earth Fault Protection R, fn (ANSI 64R)
Setting Ranges / Increments
Admissible Rotor Earth Capacity C
E
Times
Dropout Ratios
Alarm Stage R
E ALARM
3.0 kΩ to 30.0 kΩ Increments 0.1 kΩ
Tripping Stage R
E TRIP
1.0 kΩ to 5.0 kΩ Increments 0.1 kΩ
Delay Times
T
RE ALARM
0.00 s to 60.00 s
or ∞ (ineffective)
Increments 0.01 s
T
RE TRIP
0.00 s to 60.00 s
or ∞ (ineffective)
Increments 0.01 s
Reactance in X
COUPLING
in coupling circuit (capacitive)
–100 Ω up to 800 Ω Increments 1 Ω
Resistance in R
BRUSHES
in coupling circuit 0 Ω up to 999 Ω Increments 1 Ω
Pickup value of I RE< disturbance indication 1.0 mA to 50.0 mA
or 0.0 (stage is inactive)
Increments 0.1 mA
Correction angle W0 I RE
for rotor earth fault current
-15.0° to +15.0° Increments 0.1°
For the tolerances stated, and for
detecting an interruption of the measuring circuit
0.15 µF ≤ C
E
≤ 3.0 µF
Admissible Operating Range of Injected Voltage
(Alarm U
RE
< at U ≤ 20 V)
AC 20 V to 100 V
Pickup Times
- Alarm Stage, Tripping Stage ≤ 80 ms
Dropout Times
- Alarm Stage, Tripping Stage ≤ 80 ms
R
E ALARM
, R
E TRIP
approx. 1.25
Alarm I
RE
< approx. 1.20 or 0.5 mA dropout difference
Alarm U
RE
< approx. 5 V dropout difference