Leroy Somer AVR R250 – Automatic Voltage Regulator

The Leroy Somer R250 is a robust and high-performance Automatic Voltage Regulator (AVR) designed for industrial alternators using SHUNT or AREP excitation systems. It provides precise voltage control and exceptional stability, ensuring reliable generator performance under varying load conditions. With durable construction and advanced regulation features, the R250 is ideal for medium generator sets used in demanding industrial and commercial environments.

Key Specifications:

• Voltage Regulation: ±1% steady-state accuracy

• Excitation Current: 5 A continuous, 10 A maximum for 10 seconds

• Sensing Voltage Range: 85 V – 520 V AC (50/60 Hz)

• Response Time: Approx. 500 ms

• Operating Temperature: –40 °C to +70 °C

• Excitation System: SHUNT or AREP type

• Protection: Over-excitation and thermal protection built-in

• Compatibility: Suitable for Leroy Somer LSA and TAL series alternators, and equivalent models