EA448 Leroy Somer R448 AVR Replacements

EA448

Automatic Voltage Regulator 160Vdc 10Amp

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, R438, and AEM110RE016 and also Olympian FG Wilson 922 124.

* It can be used with KUTAI IVT Generator Excitation Booster to increase motor starting capacity.

Features

  • Voltage regulation less than +/-0.5%
  • Load acceptance module (LAM)
  • 50/60 Hz selectable
  • Under frequency and Exc. max protection
  • Single phase or three phase voltage sensing optional
  • Soft start voltage ramping
  • Normal rapid response time (option)
  • Apply with KUTAI IVT-1260/IVT-2460 to exceeds normal generator motor starting capabilities

Specifications

  • Sensing Input
  • Terminal 0 to 110 Vac = 95 to 140 Vac
    Terminal 0 to 220 Vac = 170 to 260 Vac
    Terminal 0 to 380 Vac = 340 to 520 Vac
    Frequency 50/60 Hz selectable
  • Power Input
  • Voltage 40 to 150 Vac 3 phase
  • Excitation Output
  • Voltage Max. 160 Vdc @ power input 120 Vac
    Current Max. 10A
  • External Voltage Adjustment
  • +/-10% @ 1K ohm 1 watt potentiometer
  • Voltage Regulation
  • Less than +/-0.5% (with 4% engine governing)
  • Build Up Voltage
  • 5Vac residual volts at power input terminal
  • Response Time
  • 0.3 to 1 second @ +/-20% voltage vibration
  • Quadrature Droop Input
  • Max. 7% @ P.F. = 0.7
  • Auxiliary Winding
  • 6 to 150 Vac (No load rms)
  • LAM Voltage Droop Rate
  • 4.5 to 6.5 V/Hz @ 220 Vac selectable

AVR Control Functions

  • VOLT
  • Voltage adjustment
  • STAB
  • Stability adjustment
  • V/HZ
  • UFRO knee point set
  • EXC.MAX
  • Excitation current limit
  • STAT
  • Droop adjustment

Environment

  • Operating Temperature
  • -40 to +70 °C
  • Storage Temperature
  • -40 to +85 °C
  • Relative Humidity
  • Max. 95%
  • Vibration
  • 1.5 Gs @ 5 to 30 Hz
    5.0 Gs @ 30 to 500 Hz

Physical Specifications

  • Dimensions
  • 200.0 (L) x 140.0 (W) x 62.0 (H) mm
  • Weight
  • 950 g +/-2%

Downloads

Dimensions

Rotating Image