Leroy Somer R448 AVR Replacements

EA448

Automatic Voltage Regulator 160 Vdc 10 Amp

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.

Brochure

Manual

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  • All manufacturer names and numbers are used for reference purpose only and do not imply that any part is the product of these manufacturer.

Features

  • Voltage regulation < +/-0.5%
  • Load acceptance module (LAM)
  • 50/60 Hz selectable
  • Under frequency & 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 – 110V = 95 – 140V
Terminal
0 – 220V = 170 – 260V
Terminal
0 – 380V = 340 – 520V
Frequency
50/60 Hz selectable
Power Input
Voltage
40 to 150 Vac 3 phase
Output Current Max. 10A
Current Droop Max. 7% @ P.F.=0.7
Voltage Regulation < +/-0.5% (with 4% engine governing)
Build Up Voltage Residual volts at AVR terminal > 5 Vac
Voltage Output Max. 160 Vdc @ 120 Vac
External Voltage Adjustment +/-10% @ 1 kΩ 1 watt trimmer
Auxiliary Winding 6 – 150 Vac (No load rms)
Response Time 0.3 to 1 second @ +/-20% voltage vibration
LAM Voltage Droop Rate 4.5 to 6.5V/Hz @ 220 Vac selectable
Environment
Operating Temperature
-40 to +60 °C
Storage Temperature
-40 to +85 °C
Relative Humidity
Max. 95%
Vibration
1.5Gs @ 5 to 30 Hz
5.0Gs @ 30 to 500 Hz
AVR Control Functions
VOLT
Voltage adjustment
STAB
Stability adjustment
V/HZ
UFRO knee point set
EXC.MAX
Excitation current limit
STAT
Droop adjustment
Dimension 200.0 (L) x 140.0 (W) x 62.0 (H) mm
Weight 970 g +/-2%

Diagram and Dimensions

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