Power Electronics SE-4E15 Automatic Voltage Regulator (AVR) – 3-Phase, 20A Continuous, 350–500V AC Sensing, 0–120V DC Output

The Power Electronics SE-4E15 Automatic Voltage Regulator (AVR) is a high-performance generator excitation and voltage regulation controller designed for demanding industrial and power-generation applications. The SE-4E15 uses a three-phase full-wave phase-control design and is specifically suited for high-current brushless generators.

According to the manufacturer's published specifications, the SE-4E15 accepts a 350–500V AC three-phase sensing input and provides an excitation output of 0–120V DC with 20A continuous current capability. The AVR is powered through a 1.5 kVA special transformer that provides isolation, supporting reliable operation within generator excitation systems.

This Power Electronics AVR is suitable for use in industrial generators, marine generator systems, brushless alternators, power-generation equipment and generator excitation control applications where stable automatic voltage regulation is required.

The product shown in the photographs is marked MODEL: SE-4E15 and AVR Manufacture Greece. The physical condition should be evaluated from the supplied photographs and tested before installation if sold as used or surplus equipment.