This document introduces the EA45A220 Generator Automatic Voltage Regulator produced by Kutai in Qianfu Street, Qianzhen District, Kaohsiung City, Taiwan. This product is suitable for self-excited carbon brush generators, with features such as voltage adjustment rate < ±1%, adjustable voltage, stability, and magnetic field limitation. It can choose between full-wave and half-wave types and can be equipped with low-frequency protection and parallel functions.
This manual describes the KUTAI EA45A220 automatic voltage regulator for self‑excited and brushed generators. It highlights key features such as a voltage adjustment rate of less than ±1%, compatibility with 50/60 Hz systems, selectable full‑wave or half‑wave models, adjustable voltage, stability and magnetic field limits, optional low‑frequency protection, parallel operation, and built‑in fan cooling.
Technical parameters are listed, including input voltage detection range (170‑265 VAC), single‑phase two‑wire input, required AVR input of 5 VAC at ≥25 Hz, voltage adjustment range of ±10%, continuous current 45 A (60 A for 10 s non‑continuous), operating temperature –40 °C to 60 °C, dimensions 330 mm × 190 mm × 180 mm, weight 4.5 kg (H model) or 5.2 kg (F model), minimum resistance 9 Ω, and magnetic field output limits (90 VDC for half‑wave, 180 VDC for full‑wave). This manual is written in Chinese.
| Voltage detection range | 170~265 VAC |
|---|---|
| Required AVR input voltage | 5 VAC, ≥25 Hz |
| Frequency compatibility | 50/60 Hz |
| Voltage adjustment range | ±10% |
| Continuous current rating | 45 A |
| Non‑continuous current rating | 60 A for 10 s |
| Operating temperature | -40 °C to 60 °C |
| Dimensions (L×W×D) | 330 mm × 190 mm × 180 mm |
| Weight (H model) | 4.5 kg |
| Weight (F model) | 5.2 kg |
| Voltage adjustment rate | < ±1% |
| Magnetic field output (H model) | max 90 VDC |
| Magnetic field output (F model) | max 180 VDC |
The voltage adjustment rate is less than ±1%.
The regulator operates between –40 °C and 60 °C.
It is rated for 45 A continuous current, with a non‑continuous rating of 60 A for up to 10 seconds.