Leroy Somer AVR EM10 – Automatic Voltage Regulator

The Leroy Somer EM10 is a compact and efficient Automatic Voltage Regulator (AVR) designed for small alternators using SHUNT excitation systems. It provides reliable voltage stability and smooth generator performance, ensuring consistent output under varying load conditions. Built with robust components and simple installation in mind, the EM10 is ideal for portable generators, standby units, and light industrial applications.

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: Integrated over-excitation and thermal protection

• Compatibility: Suitable for small Leroy Somer alternators and equivalent generator models