ABB UC Load Break Switch Service Manual

About this manual

This manual provides detailed instructions for the safe maintenance and repair of the ABB UC load break switch equipped with a BUE/BUL drive unit. It covers required safety measures, proper grounding, and compliance with local regulations before any work begins.

The document also describes oil handling procedures, component replacement steps, required tools and materials, and testing methods to ensure reliable operation after service. Illustrations and part lists help technicians perform the work efficiently. This manual is written in Chinese.

What's inside

• Safety Precautions
• Power Disconnection and Grounding
• Oil Handling and Safety
• Component Replacement
• Repair Procedures
• Tools and Materials
• Testing and Adjustment
• Appendix: Part List

Frequently asked questions

What safety steps must be taken before working on the UC load break switch?

Power must be disconnected, the equipment must be grounded, and local safety regulations must be followed before any work.

What must be done with the oil chamber after oil removal?

The oil chamber must be grounded and kept free of moisture; check oil level before restarting the equipment.

Are there specific tools required for the repair?

Yes, the manual lists required electrical tools, hand tools, and replacement parts for each repair step.