Siemens SIPROTEC 7UM62 - Page 503

Technical Data
4.27 Rotor Earth Fault Protection R, fn (ANSI 64R)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
503
Tolerances
Influencing Variables for Pickup Values
Alarm Stage, Tripping Stage 5 % for R
E
≤ 5 kΩ and 0.15 ≤ C
E
/µF≤ 3
10 % for R
E
≤ 10 kΩ and 0.15 ≤ C
E
/µF≤ 3
10 % for 10 ≤ R
E
/kΩ ≤ 3 and C
E
≤ 1 µF
Delay times T 1 % 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 %