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.

  • 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

  • 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 < +/-0.5% (with 4% engine governing)
Response Time < 20 milliseconds
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 < 3% at -40 to +70 °C
Under Frequency Knee Point Thermal Drift < +/-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
5.5Gs @ 60 Hz
Dimension 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%

Documents

Dimension

Accessories

  • 6.35 mm Flag type Terminal * 1
  • M4L25 Screw * 4
  • 6.35 mm connection PIN * 2