New after-market AVR is the same fit, form & function as the genuine Leroy Somer R449.

Save $1800.00 - $2000.00!  The Genuine R 449 sells for approx. $2500.00!

Replaces the following part numbers:

• R449 LS/A
• R449 LS/B
• R449 LS/C
• AEM220RE010 (AEM 220 RE 010)

 This replacement voltage regulator for R 449 is a shunt type AVR. It is designed to fit as standard on A50 to A 54 alternators.

It can be supplied with power either by a power VT, or by the AREP field excitation system, or by a single-phase or 3-phase PMG.
Using the R 726 external module, the regulator can control the power factor (2F) and can match the alternator voltage to the mains voltage (3F) prior to synchronization.

The output power is 7amps @ 63VDC under normal conditions and 15A for 10s under overload conditions.

The power can be supplied:
- using 2 independent auxiliary windings integrated in the alternator stator (AREP excitation)
- using a single or 3-phase power VT
- using a single or 3-phase PMG.

Note: The single or 3-phase input voltage must not exceed 240V AC.

• Part #: R449-A