What equipment is needed for transformer maintenance?

Here are some common transformer maintenance equipment and tools:
1. Testing and diagnostic equipment
Insulation resistance tester (megohmmeter): used to measure the insulation resistance of transformer windings and insulation materials.
Transformer ratio tester: used to check whether the transformer ratio meets the design requirements.
DC resistance tester: used to measure the DC resistance of transformer windings and check for short circuits or poor contacts in the windings.
Short circuit impedance tester: used to measure the short-circuit impedance of transformers and evaluate their electrical performance.
Partial discharge detector: used to detect partial discharge phenomena inside transformers and determine insulation status.
Oil chromatography analyzer: used to analyze the gas composition in transformer oil and diagnose internal faults (such as overheating or discharge).
Power factor tester: used to evaluate the overall condition of transformer insulation system.
2. Maintenance tools
Special wrench and tool set: used for disassembling and installing transformer housings, bolts, and other components.
Lifting equipment (such as cranes or hoists): used for lifting large transformers or internal components.
Vacuum pump and oil filter: used for filtering, drying, and degassing of transformer oil.
Heating equipment: used to heat transformer oil or windings to remove moisture or perform drying treatment.
Welding equipment: used for repairing transformer casings or connecting components.
3. Safety equipment
Insulated gloves and boots: ensure the safety of maintenance personnel when operating in high voltage environments.
Protective goggles and face shields: prevent eye injuries from splashes or oil stains during maintenance.
Grounding device: used to ensure reliable grounding of transformers during maintenance and prevent electric shock accidents.
Gas detector: used to detect the presence of harmful gases (such as hydrogen, methane, etc.) inside transformers.
4. Cleaning and maintenance of equipment
Transformer oil treatment equipment: including oil filters, oil tanks, and oil pumps, used for oil filtration, replacement, and replenishment.
Cleaning tools: such as brushes, vacuum cleaners, and non-woven fabrics, used to clean the inside and outside of transformers.
Drying equipment: such as a hot air gun or drying oven, used to remove moisture inside transformers.
5. Auxiliary equipment
Lighting equipment: used to provide sufficient lighting inside transformers or in low light environments.
Recording and measuring tools, such as thermometers, hygrometers, and recorders, are used to monitor environmental parameters during maintenance processes.
Computers and software: used for analyzing test data, generating reports, and recording maintenance processes.
6. Special equipment (for large transformers)
Winding disassembly and installation tools: used for repairing or replacing windings in large transformers.
Core grounding tester: used to detect the grounding status of transformer cores.
Cooling system detection equipment: used to check the operating status of the transformer cooling system (such as fans, oil pumps).