Leroy-Somer digital voltage regulators are designed to integrate easily in complex systems, providing regulation and security features to ensure optimal performance of the installation.

Excitation types including power factor (PF) regulation, kVAr regulation, manual mode and mains PF regulations are available, as well as advanced regulation functions such as Load Acceptance Module (LAM) or voltage droop to optimize load management and paralleling between gensets.

Digital voltage regulators Series

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The D350 digital automatic voltage regulator (AVR) for industrial alternators provides excitation current up to 5 A with excellent reliability for SHUNT, permanent magnet (PMG) or AREP (auxiliary winding) excitation types.

D350 includes advanced protections such as over-excitation limitation and voltage sensing loss. It also includes speed detection capabilities, with over- and under-speed alarms. D350 also features voltage droop for genset parallel operation, and it is equipped with a Load Acceptance Module (LAM) to handle load impact events.

Configuration & setup

D350 can be configured using the Leroy-Somer EasyReg Advanced software.

Technical notes

ER09 : D350 contactor setting for three different voltages