Leroy Somer AVR R120 – Automatic Voltage Regulator

The Leroy Somer R120 is a compact and reliable Automatic Voltage Regulator (AVR) designed for small alternators using a SHUNT excitation system. It ensures precise voltage regulation and stable generator performance, even under fluctuating load conditions. Engineered for simplicity and long-lasting performance, the R120 is ideal for portable and standby generators, offering excellent cost-effectiveness and dependable operation.

Key Specifications:

• Voltage Regulation: ±1% steady-state accuracy

• Excitation Current: Up to 3 A continuous

• Sensing Voltage Range: 170 V – 260 V AC (50/60 Hz)

• Response Time: <500 ms typical

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

• Excitation System: SHUNT type

• Protection: Over-excitation and thermal protection integrated

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