The MX321 is a three phase, thyristor type Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brushless generator.
Most sensitive AVR model
Stamford MX 321 is very sensitive AVR model. Regulation is +/- 0,5% . This is very sharp for alternator voltages and regulation.
Over Voltage Detection
Another useful spect of MX 321 is over voltage protection
Set point is 300 VDC , time delay is 1 second..
Best regulation +/- 0,5%
Over voltage protection
Remote voltage adjustment
3,7A Out continously