Product Overview
OverviewTheD550 Leroy Somer AVR (Automatic Voltage Regulator)represents the pinnacle of digital voltage regulation technology for industrial and commercial generator applications. Engineered by Leroy Somer, a global leader in alternator manufacturing, the D550 delivers exceptional excitation current control with unmatched reliability and precision. This advanced digital AVR is designed to work seamlessly with SHUNT, permanent magnet generator (PMG), and AREP (auxiliary winding) excitation systems, making it one of the most versatile voltage regulators available for Leroy Somer alternators. Whether you're operating critical backup power systems, prime power installations, or industrial generator sets, the D550 ensures stable, consistent voltage output across varying load conditions and operating environments.What sets the D550 apart from conventional voltage regulators is its digital architecture, which provides superior voltage stability, faster response times, and enhanced protection features compared to analog predecessors. The regulator continuously monitors generator output and instantly adjusts excitation current to maintain precise voltage levels, even during sudden load changes or fluctuating input conditions. With a broad frequency range of 10 Hz to 400 Hz and a voltage setting range of ±30%, the D550 accommodates diverse applications from standard 50/60 Hz power generation to specialized high-frequency aerospace and military applications. This genuine OEM Leroy Somer component is built to exacting standards, ensuring long service life, minimal maintenance requirements, and seamless integration with LSA series alternators. When you choose the D550, you're investing in proven technology backed by decades of Leroy Somer engineering excellence.Key SpecificationsSpecificationValueModel NumberD550ManufacturerLeroy SomerRegulation TypeDigital Automatic Voltage RegulatorExcitation SystemsSHUNT, PMG, AREPFrequency Range10 Hz - 400 HzVoltage Setting Range±30%Voltage
