Gold Member Since 2015
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Yueqing Heyi Electrical Co., Ltd.

Automatic Voltage Regulator for Generator Set, Generator Voltage Regulator, AVR for Generator manufacturer / supplier in China, offering R438 Leroy Somer AVR Automatic Voltage Regulator, Three Phase Current Transformer D363 50-600A 3 in 1 Combined Cts, Kct-24 Split Core CT Clamp Current Transformer with Earthphone Plug and so on.

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Supplier Homepage Product Generator AVR controller Automatic voltage regulator AVR R438 Leroy Somer AVR Automatic Voltage Regulator

R438 Leroy Somer AVR Automatic Voltage Regulator

Purchase Qty.:
(Pieces)
10-99 100-999 1,000+
FOB Unit Price: US $76.62 US $75.62 US $74
Purchase Qty. (Pieces) FOB Unit Price
10-99 US $76.62
100-999 US $75.62
1,000+ US $74
Get Latest Price
Production Capacity: 100000PCS/ Month
Transport Package: 0.35kg/18*13*4cm/Per PC
Payment Terms: L/C, T/T, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: R438
  • Input Voltage: 160~260V
  • Phase: Single and Three Phase
  • Sensing Input Voltage: 190 -264V AC Max,2 or 3 Phase
  • Max Input Current: 0.33A
  • Set Point: 75VDC
  • Specification: Rosh package
  • Purpose: Generator
  • Resistance: 10ohms Minimum
  • Function: Paralleling Fucntion
  • Output Voltage: Max 120V AC
  • Test.Temperature: 75 Degree
  • Trademark: OEM/HEYI
  • Origin: Zhejiang Yueqing
Product Description

The R438 AVR is powered by two auxiliary windings which are self-sufficient of the voltage match circuit, the first winding has a voltage in proportion to that of the alternator(characteristic shunt), the second 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 transisitor.

1.itable for high levels of vibration and harsh environments

2.and overload current:8A-10s 

3.ase to phase voltage sensing

4.andard power supply: AREP or PMG

 Voltage Regulation  ±0.5%
 Remote voltage adjustment range ±0.5%
 Short circuit capability 3 x Irated for 10 seconds
 Standard power supply AREP or PMG
 Rated overload current 8 A - 10 s
 Voltage sensing 5 VA isolated via transforme
 0-110V terminals 95 to 140V
 0-220V terminals 170 to 260V
 0-380V terminals 340 to 520V
 Voltage regulation ± 1%
 Current sensing C.T.2.5VA cl1,secondary 1 A 
 Voltage sensing 95~140 volts (50/60 Hz) 
 170~260 volts (50/60 Hz) 
 340~520 volts (50/60 Hz)
 Fit for 1000 series generator
 2000 series generator
 3000 series generator

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