R448 Avr For Leroy Somer Generator

We are offering to our customers R448 AVR for Leroy Somer Generator at very reasonable price.

For both AREP & PMG excitation systems,the alternator voltage regulator is the R 448. With AREP excitation,
the R 448 electronic AVR is powered by two auxiliary windings which are independent of the voltage equal circuit.
The primary winding has a voltage in ratio to that of the alternator (characteristic Shunt),
the next 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 transistor.
With PMG excitation, a permanent magnet generator (PMG) added to the alternator supplies the AVR with voltage
which is free of the main alternator winding. This is builtin at the rear of the machine and connected to the R 448 AVR,
and the ST9 jumper must be disconnected. These two principles provide the machine with a short circuit current capacity of 3 IN for 10 s, and good protection to distortions generated by the load.
The AVR monitors and corrects the alternator output voltage by adjusting the excitation current.
In SHUNT excitation, R 448 AVR.is supplied by main windings (140V - 50/60 Hz) to X1, X2.