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EA448

Automatic Voltage Regulator 160VDC 10Amp

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Leroy Somer R448 AVR Replacements

EA448 Permanent Magnet Generator or A.R.E.P or Auxiliary Winding type generator voltage regulator is a compatible replacement for Leroy Somer R448, R449 and R438 regulators and can be paired up with original equipment of R726 3 phase module.

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Features

Specifications

Sensing Input Terminal 0-110V = 95~140V
Terminal 0-220V = 170~260V
Terminal 0-380V = 340~520V
Frequency 50/60 Hz Selectable
Power Input Voltage 40~150 VAC, 3 Phase
Auxiliary Winding 6~150 VAC (No load rms)
Voltage Output Max. 160 VDC @ 120 VAC
Output Current Max. 10A
Response Time 0.3~1sec. @ ±20% Voltage Vibration
Current Droop Max. 4% @ P.F.=0.8
Voltage Regulation < ±0.5% (with 4% engine governing)
External Voltage Adjustment ±10% @ 1 KΩ
Voltage Build Residual volts at AVR terminal > 5 VAC
LAM Voltage Droop Rate 10% & 15% Selectable
Environment
  • Vibration : 1.5 G @ 5~30 Hz , 5.0 G @ 30~500 Hz
  • Relative Humidity : Maximum 95%
  • Operating Temperature : -40~60 °C
  • Storage Temperature : -40~85 °C
AVR Controls Functions
  • VOLT : Voltage Adjustment
  • STAB : Stability Adjustment
  • V/HZ : UFRO Knee Point Set
  • EXC.MAX : Excitation Current Limit
  • STAT : Droop Adjustment
Dimensions 203.0(L) x 153.0(W) x 60.5(H) mm
Weight 970 g ± 2%

Mechanical Specifications

Mechanical Specifications

Related Products

Leroy Somer R230 AVR Compatible
EA230

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Use for reference purpose only and not a genuine Leroy Somer product.