NEWAGE MX321 AVR FOR NEWAGE ALTERNATORS
NEWAGE E000-23212, ONAN 305-0823

General Description / Specifications

MX321 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 nonlinear loads and to reduce radio frequency interference on the generator terminals. Sustained generator short circuit current is another feature of the PMG system.

The AVR senses the voltage in the main generator winding and controls the excitation to maintain the generator output voltage within the specified limits, compensating for load, speed, temperature and power factor of the generator. Three phase RMS sensing is employed for superior voltage regulation.

General Characteristics

> Standard Applications: > Standard Applications: 190-264V ac max, 1 phase, 2 wire.   

> POWER INPUT 140-220V ac max, 3 phase, 3 wire. 3A/phase

> OUTPUT: max 120V dc. continuous 3.7 A. 15 ohms minimum

> REGULATION: +/- 1%

> THERMAL DRIFT: 0.02% per deg. C change in AVR ambient

> SOFT START RAMP TIME: 0.4 - 4 seconds

> EXTERNAL VOLTAGE ADJUSTMENT: +/-10% with 1 k ohm 1 watt trimmer

> UNIT POWER DISSIPATION: 18 watts maximum

> QUADRATURE DROOP INPUT: 10 ohms burden. 50-60 Hz nomina

Standard Applications PMG

Stamford Alternator UC22, UC27, HC4, HC5, HC6, P7, MV7