Product Introduction

MX321 is a three phase sensed Automatic Voltage Regulator and forms part of the excitation system for a brushless generator.Excitation power is derived from a three phased permanent magnet generator(PMG),to isolate the AVR control circuits from the effects of nonlinear loads and to reguce radio frequency interence on the generator terminals.Sustained generator short circuit current is another feature of the PMG system.
The AVR sense the voltage in the main generator winding and controls the excitation to maintain the generator output voltage with the specified limits,compensating for load,speed,temperature and power factor of the generator.Thress phase RMS sensing is emplyed for superior voltage regulation.Adjustable soft start circuitry is included to provide a smooth controlled build up of generator output voltage.

Specification

Sensing input:
Voltage 190-264V ac max, 2 or 3 phase
Frequency 50-60 Hz nominal
Power input:
Voltage 170-220V ac max, 3 phase, 3 wire
Current 3A/phase
Frequency 100-120 Hz nominal
Output
Voltagemax 120V dc
Current continuous 3.7 A
Intermittent 6A for 10 secs.
Resistance 15 ohms minimum
Regulation +/- 0.5% RMS with 4% engine goveming