Installation and usage instructions for ABB UZE and UZF on‑load tap changers with BUF‑3 electric mechanism.
This manual provides step‑by‑step guidance for installing, commissioning, and maintaining ABB UZE and UZF type on‑load tap changers. It covers required tools, materials, oil handling, wiring, pressure‑relay setup, and safety precautions.
The document also includes detailed procedures for oil filling, dry‑in operation, transportation, and final testing, as well as appendices on welding and assembly of the electric mechanism and oil tank. This manual is written in Chinese.
| Torque wrench range | 5‑85 Nm |
|---|---|
| Compressed air pressure range | 0‑100 kPa |
After oil filling, the equipment must rest for at least three hours at atmospheric pressure to allow air bubbles to escape before the transformer can be energized.