TRANSFORMERS REPAIR:

in the place of installation
in the repair shop

Internal revisions of transformers on work stand.

- Visual examination of windings together with connections,
- Transformer’s core visual examination,
- Tap changer and selector visual examination,
- Screw joints checking,
- Winding terminals checking,
- Seal wires, winding insulating layers checking
- Condition of coil shields checking

Assembly and disassembly of new transformers and transformer after repair up to 500 MVA.
Assembly and disassembly of bushing insulators of power transformers.
Oil treatment and its replacement on work stand.
- treatment of oil and vacuum circulation degassing with special vacuum aggregates

Replacement of seals:

- bushing insulators,
- manholes,
- main seal,
- and others

Inspection, replacement of the transformer’s equipment: oil pumps, fans, zinc coated radiators, safety valves.
Maintenance technician repairs.
Transformer’s oil-paper insulation drying
- Transformer’s oil-paper insulation vacuum drying aimed at increasing the temporary and long-term operation reliability of the unit
Dehumidifier and absorbent replacement.
Cleaning and painting of transformers.

 

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