This document introduces a three-phase detection generator automatic voltage regulator board called EA15A3H, which is suitable for self-excited brushless generators. The features include a voltage adjustment rate of less than ±1%, suitable for 220/380/440VAC brushless generators, three-phase voltage detection, 15ADC large output current, selectable frequency of 50/60 Hz, low frequency protection and voltage slow build-up function, adjustable voltage, stability, and low frequency protection settings, and high breaking capacity fuse protection.
The EA15A3H is a universal three‑phase test generator regulator designed for self‑excited brushless generators. It accepts 220 V, 380 V or 440 V three‑phase input and provides up to 15 A continuous output current with a non‑continuous peak of 20 A for 10 seconds. Frequency can be set to 50 Hz or 60 Hz via a jumper, and the unit features low‑frequency protection and a slow voltage‑rise function.
Physical dimensions are 1500 mm × 1350 mm × 720 mm and the weight is approximately 867 g (±2%). The regulator operates from –40 °C to 65 °C, can be stored from –40 °C to about 85 °C, and tolerates vibration up to 3 g in the 100‑2000 Hz range. This manual is written in Chinese.
| Input Voltage | 220/380/440 VAC |
|---|---|
| Output Current (continuous) | 15 A |
| Output Current (non‑continuous) | 20 A for 10 s |
| Frequency Selection | 50 Hz / 60 Hz |
| Voltage Adjustment Rate | < 0.1 % |
| Maximum Power Consumption | 8 W |
| Dimensions (L×W×H) | 1500 mm × 1350 mm × 720 mm |
| Weight | 867 g ±2 % |
| Operating Temperature | -40 °C to 65 °C |
| Storage Temperature | -40 °C to ~85 °C |
| Vibration Resistance | 3 g @ 100‑2000 Hz |
It works with 220 V, 380 V or 440 V three‑phase AC input.
The regulator can deliver a continuous output current of 15 A.
Frequency is selectable between 50 Hz and 60 Hz using a jumper.
The unit measures 1500 mm × 1350 mm × 720 mm.