Leroy Somer D350 – Digital Automatic Voltage Regulator
The D350 is an advanced digital AVR developed for brushless alternators requiring a rated field current up to 5 A. It supports SHUNT, AREP and PMG excitation types and delivers high-precision regulation and robust protection. Designed for industrial generator systems, the D350 offers excellent response to load changes, short-circuit events and genset-parallel operation. ardgenerator.com+4acim.nidec.com+4leroy-somer.com+4

Key Specifications:

• Rated Excitation Current: 5 A continuous (10 A for 10 s) nidec-netherlands.nl+1

• Regulation Accuracy: ±0.25% typical nidec-netherlands.nl+1

• Supported Excitation Modes: SHUNT, AREP or PMG leroy-somer.com+2leroy-somer.com+2

• Voltage Sensing: Three-phase or single-phase up to ~530 V AC max. leroy-somer.com+1

• Frequency Range: 10-100 Hz typical ardgenerator.com+1

• Protection & Features: Over-excitation limitation, loss of sensing, stator current monitoring, droop/quadrature droop, Load Acceptance Module (LAM), parallel operation support. acim.nidec.com+2sorilux.com+2

• Operating Temperature Range: –40 °C to +65 °C (storage down to –55 °C) nidec-netherlands.nl+1