Specification

Normal AVR supply power: 2 auxiliary windings Shunt supply: 150V – 50/60Hz Rated overload current: 10A,10s Electronic built- in(overload, short circuit, and loss of sensing) protection: If excitation current raises over 10 Amps for more than 10 seconds, excitation current will drops automatically to about 1A. To reset AVR protection, generator must be stopped(or by cutting supply voltage to the AVR). Protection of power inputs by fuses F1 Voltage sensing 5VA insulated transformer with input voltages taps at: Terminals 0-110V=95-140V Terminals 0-220V=170-260V Terminals 0-380V=340-520V

Automatic Voltage Regulator AVR Module Card R448
AVR R448 for leroy somer generator,Leroy Somer avr R448
Technical parameter: Input voltage: 70-140V AC, (PMG, or auxiliary winding, single, three phases)
Reaction is measured: 90-480V AC
MAX. Output: DC 10A 125V
Function: Built-in low-speed, over excitation
REGULATION: +/-0.5%
The R448 Automatic Voltage Regulator or AVR for Leroy Somer is designed to fit LSA46.2 to LSA50.2 alternators with shunt and PMG exciter alternator systems. The R448 AVR is also suitable for paralleling alternators.
This unit also replaces FG Wilson Part 922-124 and CAT 922-124