Leroy Somer AEM110RE019 replacement

ADVR-250

Automatic Voltage Regulator (AVR) compatible with Leroy Somer R250

With two-line sensing, ADVR-250 is a hybrid analog-digital AVR for self-excited (shunt) generators. It's compatible with Leroy Somer* R250 and can also replace R230. The innovative heat sink design significantly improves the heat radiation efficiency.

Comparison Table

Features

  • Compact size, robust and high reliability
  • Innovative heat sink significantly increases cooling efficiency
  • Load Acceptance Module (LAM) protection
  • Soft start voltage ramping
  • Over excitation protection
  • Digital low frequency protection circuit, prevents thermal drift
  • EMI suppression
  • Built-in high capacity fuse

Specifications

  • Sensing & Power Input
    (Average Reading)
  • Voltage 85 to 140 Vac 1 phase 2 wire
    Frequency 50/60 Hz (Potentiometer setting)
  • Excitation Output
  • 63 Vdc @ 120 Vac single phase
    continuous 5A Max. 110 Vdc 5A for 10 seconds
  • Excitation Resistance
  • Min. 18 ohms
    Max. 100 ohms
  • Fuse Spec.
  • Slow blow 5 x 20 mm 8A
  • External Volts Adjustment
  • +/-14% with 1 kΩ 1 watt trimmer
  • Build Up Voltage
  • Residual volts at power input terminal > 5 Vac 25 Hz
  • Soft Start Ramp Time
  • 3 seconds +/-10%
  • Volts Regulation
  • Less than +/-0.5% (with 4% engine governing)
  • Response Time
  • Less than 20 ms
  • Static Power Dissipation
  • Max. 4 watts
  • EMI Suppression
  • Internal electromagnetic interference filtering
  • Under Frequency Protection
    (Factory Setting)
  • 50 Hz system presets knee point at 48 Hz
    60 Hz system presets knee point at 58 Hz
  • Over Excitation Current Limiting
  • Excitation Current 5A +/-10%
  • Voltage Thermal Drift
  • Less than 3% at -40 to +70 °C
  • Under Frequency Knee Point Thermal Drift
  • Less than +/-0.1 Hz at -40 to +70 °C

Environment

  • Operating Temperature
  • -40 to +70 °C
  • Storage Temperature
  • -40 to +85 °C
  • Relative Humidity
  • Max. 95%
  • Vibration
  • 5.5 Gs @ 60 Hz

Physical Specifications

  • Dimensions
  • 140.0 (L) x 81.0 (W) x 46.0 (H) mm
    5.51 (L) x 3.19 (W) x 1.81 (H) inch
  • Weight
  • 300 g +/-2%
    0.66 lb +/-2%

Downloads

Dimensions

Accessories

  • 6.35 mm Flag Type Terminal
  • x 1
  • M5L35 Screw
  • x 4
  • 6.35 mm connection PIN
  • x 2