BEMAC UST-205-D Control Circuit Board
Discover the genuine BEMAC UST-205-D Automatic Voltage Regulator (AVR). This control circuit board ensures stable voltage regulation for brushless generators, featuring over-excitation and under-frequency protection for reliable power output.
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BEMAC UST-205-D Control Circuit Board
The BEMAC UST-205-D is a high-performance Automatic Voltage Regulator (AVR) designed to provide stable and reliable voltage control for brushless generators. This robust control circuit board ensures consistent generator output by automatically adjusting the excitation current. It features a compact design and incorporates essential protection functions such as Under Frequency Protection (UFRO), soft start voltage ramping, and over-excitation protection to safeguard the generator and connected equipment. The UST-205-D is ideal for a wide range of industrial and commercial power generation applications, offering precise voltage regulation and dependable performance.
Technical Specifications:
- Model: UST-205-D
- Application: Automatic Voltage Regulator (AVR) for Brushless Generators
- Sensing Input Voltage: 220/380/440 VAC, 1 Phase, 2 Wire (Selectable via DIP switch)
- Power Input Voltage: 100~300 VAC, 1 Phase, 2 Wire
- Excitation Output Voltage: Max 90 VDC at 240 VAC input
- Output Current: Continuous 12A, Intermittent 20A for 10 seconds
- Voltage Regulation: < ±0.5% (with 4% engine governing)

| Brand | BEMAC |
|---|---|
| Model | UST-205-D |
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