The Cummins 305-0823 is a three phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brush-less generator. Excitation power is derived from a three-phase permanent magnet generator (PMG), to isolate the AVR control circuits from the effects of non- linear loads and to reduce radio frequency interference on the generator terminals. Sustained generator short circuit current is another feature of the PMG system.
TECHNICAL DATA:
SENSING INPUT
Voltage :190-250V ac max, 2 or 3 phase
Frequency :50-60 Hz nominal
POWER INPUT (PMG)
Voltage: 170-220V ac max, 3 phase, 3 wire
Current :3A/phase
Frequency: 100-120 Hz nominal
OUTPUT
Voltage: max 120V dc
Current: continuous 3.7 A
Intermittent 6A for 10 secs.
Resistance:15 ohms minimum
REGULATION:+/- 0.5% RMS with 4% engine goveming
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