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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 R448 3 Phase Leroy Somer AVR Generator Voltage Regulator, Ce RoHS Split Core Current Transformer Manufacturer Flexible Low Voltage CT for Energy Monitoring, Top Sell Three Phase Power Capacitor for Capacitor Battery and so on.

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Supplier Homepage Product Generator AVR controller Automatic voltage regulator AVR R448 3 Phase Leroy Somer AVR Generator Voltage Regulator

R448 3 Phase Leroy Somer AVR Generator Voltage Regulator

Purchase Qty.:
10-99 100-999 1,000+
FOB Unit Price: US $92.74 US $91.74 US $90
Purchase Qty. (Pieces) FOB Unit Price
10-99 US $92.74
100-999 US $91.74
1,000+ US $90
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.: R448
  • 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

R448 3 phase Leroy Somer avr generator voltage regulator
The circuitry of the R448 Automatic Voltage Regulator (AVR) provides closed loop control of the alternator output voltage by regulating the exciter field current. 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). Which is powered by two auxiliary windings which are independent of the voltage equal circuit. The power supply voltage is rectified and filtered before being used by the AVR monitoring transistor. With PMG excitatioin, a permanent magnet generator (PMG) added to the alternator supplies the AVR with voltage which is free of the main alternator winding. This is built-in at the rear of the machine and connected to the R448 AVR, and the ST9 jumper must be disconnected.    
*Quadrature droop adjustment
*AVR Voltage adjustment
*Stability adjustment
*LAM Threshold (underspeed) adjustment
*Excitation ceiling adjustment
*Selection of single phase or three phase*
*voltage sensing
*Selection of normal or rapid response time
*50 Hz or 60 Hz frequency option
*Remote voltage adjustment option
*LAM enable/disable option
*Alternator frame selection
*Excitation system selection
Input voltage: 70-140V AC, (PMG, or auxiliary 
winding, single, three phases)
Reaction is measured : 90-480V AC
MAX. output :DC 10A 125V
Function: Built-in low-speed , over excitation

 Voltage regulation
 ± 0.5%
 Remote voltage adjustment range ± 5%
 Short circuit capability 3 x Irated for 10 seconds
 Voltage sensing 95 to 140 volts (50/60 Hz)
 170 to 260 volts (50/60 Hz)
 340 to 520 volts (50/60 Hz)
 Response time Normal (1 sec) for ± 20% voltage variation
 Rapid (0.3 sec) for ± 20% voltage variation

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