AVR R449 Automatic Voltage Regulator for Diesel Generator


Availability: 20 in stock

Substitute Leroy Somer Alternator Voltage Regulator AVR R449
Now in stock for Original purchase

Sharing is caring!


The circuitry of the R449 Automatic Voltage Regulator (AVR) provides closed loop control of the alternator output voltage by regulating the exciter field current. Which can be powered by either AREP or the PMG field excitation systems and is fitted as standard on 8100 Series Alternators & 9100 Series Alternators.


*Normal AVR supply power:2Auxiliary windings(X1,X2,and Z,Z2)

*Shunt supply:150V-50/60Hz

*Rated overload current:10A,10s

*Electronic built-in(overload,shortcircuit,and loss of sensing)

*Protection of power inputs by fuses F1

*Voltage Sensing:5VA insulated transformer with input voltage taps at:

*Terminals 0-110V=95 to 140V

*Terminals 0-220V=170 to 260V

*Terminals 0-380V=340 to 520V

NameGenerator Voltage Regulator AVR R449
Steady state voltage regulation±0.5%
Remote voltage adjustment range±5%
Short circuit capability3 x Irated for 10 seconds
Voltage sensing0-110v Terminals = 95 to 140 volts (50/60 Hz)
0-220v Terminals = 170 to 260 volts (50/60 Hz)
0-380v Terminals = 340 to 520 volts (50/60 Hz)
Response timeNormal (1 sec) for ± 20% voltage variation
Rapid (0.3 sec) for ± 20% voltage variation

Find out more generator Automatic Voltage Regulator

Similar Products


There are no reviews yet.

Be the first to review “AVR R449 Automatic Voltage Regulator for Diesel Generator”
Review now to get coupon!

Your email address will not be published. Required fields are marked *

Scroll to Top