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R448 Leroy-Somer electronic generator automatic voltage regulator voltage regulator board in AVR R448

R448 Leroy-Somer electronic generator automatic voltage regulator voltage regulator board in AVR R448
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  • Description
  • Reviews(134)
brand Leroy Somer


For SHUNT and PMG excitation system of permanent magnet brushless excitation system, such as the Leigh Larsen Ma series generator etc..

Through the transformer isolation sampling, with 0-380, 0-220, 0-110 third voltage sampling.

Built in anti excitation high protection circuit, and when the generator speed drops, the output voltage decreases with frequency protection circuit.

The bus adjustment function is excellent, and it has the function of LAM.

The excitation current is controlled by IGBT tube.

Power input: 70-140VAC, (PMG, or auxiliary winding, single, three-phase)
Induction test: 90-480VAC
Output: DC, 10A, 125V
Protection function: built in low speed, over excitation, LAM, function
Adjustment rate: better than 0.5%


Input AC power supply voltage: 80-130V

Output DC power: 140V, 10A

Adjustment accuracy: 0.5%

Field resistance: 2-100OHM

When remanence is greater than 4V, automatic pressure build-up is applied

Size: 215*150*65mm

Weight: 1.1kg


  • Product features
    • Voltage regulation < < 0.5%
    • With LAM function, increasing the transient stability of the throwing moment
    • Select 50/60Hz with the connection line
    • With low frequency protection and over excitation current limit function
    • Single phase or three-phase voltage detection function is available
    • With slow starting function, stable initial voltage
    • With two segments, the reaction time is stable and adjusted
    • Packing: carton packing

      Warranty: one year

      Provide: Chinese manual or English manual


We offer a one year warranty for all our products. If in the warranty period, because our product quality problems, you can choose to return, exchange or free maintenance. If the warranty period is over, but there is a warranty requirement, you can contact us directly, and we will contact the special technical engineer to contact you.

Our company specializes in producing all kinds of generator and generator parts. The main products are: deep series lead-acid battery charger, controller, solenoid valve (switch), switch, current transformer, rectifier, regulator, sensors, actuators, starting relay, AVR, generator shell etc.. If necessary, please call us. Thirteen billion twenty-four million nine hundred and thirty-two thousand two hundred and twenty-five

Average rating: 4.0 based on 134 reviews
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