VR1 dc voltage regulator user manual, introduces the types, levels, voltage adjustment steps, external dimensions and other information of VR1 dc voltage regulator
This manual describes the VR1 series of DC step‑down voltage regulators used in shipboard power systems. It explains the principle of operation, the voltage‑relay adjustment, and how to select the appropriate regulator type and step based on battery charging voltage.
The document also includes physical dimensions, load current ratings, and the temperature‑controlled fan cooling system, together with wiring diagrams and adjustment procedures for the voltage relay. This manual is written in Chinese.
| Voltage step (regulation) for VR1‑3 | 3 V |
|---|---|
| Regulation step options | 1.5 V, 3 V, 4.5 V |
| Regulation step options | 1.5 V, 3 V, 4.5 V |
| Regulation step options | 1.5 V, 3 V, 4.5 V |
| Maximum load current | 100 A–120 A, 200 A |
| Physical size (VR1‑21) | 270 mm × 160 mm × 85 mm |
| Physical size (VR1‑31) | 320 mm × 160 mm × 8 mm |
| Fan activation temperature | ≈ 45 °C |
The VR1‑3 regulator provides a 3 V step‑down voltage difference.
When the regulator temperature exceeds about 45 °C, the fan automatically starts.
The VR1 series can handle load currents of 100 A to 120 A, with some models rated up to 200 A.