Leroy Somer R449
The R 449 voltage regulator is of a shunt type. 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 synchronisation.
Different excitation systems
Leroy-Somer offers different excitation systems to match application requirements. An excitation system uses the alternator output to build an excitation current that is then used to power the rotating magnetic field of the rotor. This principle allows for the control of the output power.
Shunt Arep PMG
R449 AVR Is very versatile. IT can be installed as 3 different versions. Shunt , Arep or PMG.
These options are described in manual file.
Fast and sharp
R449 is an AVR which is very fast for load reactions. At instant high load currents , R449 replies well through its design.