R438 Magnet Generator or A.R.E.P or Auxiliary Winding type generator voltage regulator is a compatible replacement for Leroy Somer R450, and AEM110RE016 and also Olympian FG Wilson .
The R438 AVR is powered by two auxiliary windings which are self-sufficient of the voltage match circuit, the first winding has a voltage in proportion to that of the alternator(characteristic shunt), the second has a voltage in proportion to the stator current(compound characteristic: booster effect). The power supply voltage is rectified and filtered before being used by the AVR monitoring transisitor.
1.itable for high levels of vibration and harsh environments
2.and overload current:8A-10s
3.ase to phase voltage sensing
4.andard power supply: AREP or PMG