Leroy somer reserves the right to modify the characteristics of its products at any. The avr monitors the alternator output.
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Leroy somer avr r448 wiring diagram. Avr 4531 en 22 pmg excitation system with pmg excitation a permanent magnet generator pmg added to the alternator supplies the avr with voltage which is independent of the main alternator winding. V installation and maintenance. En e. Using the r726 external module the regulator can control the power factor 2f and can match the alternator. Check that the st3 frequency selection jumper is on the correct frequency setting. It is designed to fit as standard on a50 to a54 alternators.
Potentiometer p1. A wide variety of leroy somer avr r options are available to you leroy somer generator avr r r r r r r. 12 wires marked t1 to t12. Rotating switch selection 1. Have been made properly as shown in the attached wiring diagram. With arep excitation the r 448 electronic avr is powered by two auxiliary windings which are independent of the voltage match circuit.
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. Potentiometer p3. Leroy somer avr r448 wiring diagram. Leroy somer r automatic voltage regulator download as pdf file pdf text r r avr. Potentiometer p2. Open switch d.
The leroy somer manuals are available as free downloads. The excitation current the exciter is switched off by disconnecting should increase to its preset ceiling remain the avr power supply 1 wire on each. Optional operating modes. 2 auxiliary windinqs xix2 and z z2 shunt supply. 23082018 23082018 2 comments on leroy somer avr r448 wiring diagram. 31 electrical checks on the avr check that all connections have been made properly as shown in the attached wiring diagram.
R448 r448 v50 avr. Leroy somer 3972 en 052008 e 5 2 supply 21 arep excitation system for both arep pmg excitation systems the alternator voltage regulator is the r 448. R r v avr. Check whether the st4 jumper or the remote adjustment potentiometer have been connected. R448 automatic voltage regulator r448 automatic voltage regulator avr specificationinstallation and adjustments specifications normal avr supply power. Frequency uf function lam function.
Page 14 leroy somer installation and maintenance 3972 en 022008 d r448 r448 v50 avr. 150v5060hz rated overload current. Electronic built in overload short circuit and loss of. Warning symbol for general. The r449 voltage regulator is of a shunt type. This system provides the machine with a short circuit current capacity of 3 in for 10 s.
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