ABB REQ650 Product Manual page 41

Breaker protection REQ650 2.1 IEC
Product version: 2.1
Table 32. Rotor earth fault protection
Function
For machines with:
• rated field voltage up to
• static exciter with rated supply
voltage up to
Supply voltage 120 or 230 V
Operate earth fault resistance
value
Influence of harmonics in the DC
field voltage
Permitted leakage capacitance
Permitted shaft earthing
resistance
Protective resistor
ABB
SEMOD175176-2 v5
Range or value
350 V DC
700 V 50/60 Hz
50/60 Hz
Approx. 1–20 kΩ
Negligible influence of 50 V, 150
Hz or 50 V, 300 Hz
(1–5) μF
Maximum 200 Ω
220 Ω, 100 W, plate
(the height is 160 mm (6,2
inches) and width 135 mm (5,31
inches))
1MRK 505 358-BEN B
41