Leroy Somer R 130 B Automatic Voltage Regulator (AVR) – Generator Excitation & Voltage Control Module

The Leroy Somer R 130 B Automatic Voltage Regulator (AVR) is an industrial generator voltage regulation module designed to control and maintain the excitation of synchronous alternators. It is manufactured by Moteurs Leroy Somer, France, and is intended for use in generator and alternator excitation systems.

The R 130 B AVR provides essential voltage regulation functions including voltage sensing, excitation control, voltage droop adjustment, stability adjustment and under-frequency protection. The front-panel terminal markings provide connections for voltage detection, excitation output, external voltage adjustment and protection functions.

The unit supports voltage sensing arrangements marked for 220V and 380V, with dedicated excitation terminals identified as - Exciter and + Exciter. The AVR also provides a connection for an external voltage potentiometer, allowing voltage adjustment from a remote control panel when configured appropriately.

The built-in voltage droop function is useful for generator applications where stable voltage sharing and parallel operation are required. The S1 stability adjustment allows the regulator response to be tuned according to the alternator and operating conditions.

The R 130 B also incorporates an under-frequency / under-speed protection function, helping regulate excitation behavior when generator speed falls below the configured operating threshold.

This Leroy Somer R130B AVR is a suitable for service component for compatible Leroy Somer alternators and industrial generator systems. Buyers should verify the terminal configuration, sensing voltage, excitation requirements and generator compatibility before installation.