KUTAI Automatic Voltage Regulator (AVR) compatible with Leroy Somer R250 # ADVR-250

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 Input: (Average Reading), Voltage 85 to 140 Vac 1 phase 2 wire, Frequency 50/60 Hz Potentiometer setting
• Excitation Output: 120 Vac 1 phase Continuous 63 Vdc 3.5A Max. 110 Vdc 5A for 10 seconds, Resistance Min. 18 ohms Max. 100 ohms
• Fuse Spec: Slow blow 5 x 20 mm 8A
• External Voltage Adjustment: Max. +/-14% @ 1K ohm 1 watt potentiometer
• Voltage Regulation: Less than +/-0.5% (with 4% engine governing)
• Build Up Voltage: 5Vac 25Hz residual volts at power input terminal
• Soft Start Ramp Time: 3 seconds +/-10%
• Typical System Response: Less than 20 ms
• EMI Suppression: Internal electromagnetic interference filtering
• Static Power Dissipation: Max. 4 watts
• Under Frequency Protection: (Factory Presets) 50 Hz system knee point at 48 Hz, 60 Hz system 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

Accessories

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

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%