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R449 Leroy-Somer generator voltage regulator board adjusting plate automatic voltage regulator AVR R449

R449 Leroy-Somer generator voltage regulator board adjusting plate automatic voltage regulator AVR R449
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  • Description
  • Reviews(147)
brand Excelle


R449/448 automatic voltage regulator (AVR) is a hermetically sealed electronic device designed specifically for AC brushless generators. AVR realizes the automatic regulation of generator output voltage by controlling the excitation current of generator AC exciter.


Technical parameter:
Power input: 70-140VAC, (PMG, or auxiliary winding, single, three-phase)
Induction test: 90-480VAC
Output: DC, 12A, 125V
Protection function: built in low speed, over excitation, LAM, function
Adjustment rate: better than 0.5%

Size: 21.5*15*6CM

Effect: in the boot generator generator, using a weak remanence voltage, the voltage feedback to the excitation coil of the generator produces a stronger magnetic field, a high voltage, this voltage has grown slowly. When the output voltage is higher than the set value, the excitation board will control the output voltage to be low, and the excitation current will be smaller. On the contrary, the output voltage will not be controlled or controlled very small, the voltage will rise.


The load regulation module function of R438, R448, and R449 can ease the impact of heavy load change on the engine;The reliable AVR R series AVR is independently developed and manufactured by Leigh Larsen Mar, which is monitored by transistors,
Therefore, a guaranteed voltage regulation rate can be guaranteed, even under a distorted load condition;
At steady-state constant speed operation, the rate of voltage can reach +/-0.5%; the R series AVR (except R230) has many standard characteristics,By installing various modules to achieve the use of shaft drilling machine (installing current transformer),
Power factor adjustment and R726 voltage matching module and three-phase detection (R731);
AVR is sealed with epoxy resin to resist various vibrations and is applicable to all kinds of harsh environments


Average rating: 5.0 based on 147 reviews
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