The MX321 is a three phase, thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.
SENSING INPUT
Voltage: 190 – 264V 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 governing
THERMAL DRIFT
0.02% per deg. C chance in AVR ambient
SOFT START RAMP TIME
0.4 – 4 seconds
TYPICAL SYSTEM RESPONSE
AVR response 10 ms
Field current to 90% 80 ms
Machine Volts to 97% 300 ms
