REPAIRING TRANSFORMER
Transformer repair involves diagnosing issues like overheating, oil leaks, or damaged windings, followed by de-energizing the unit, performing a thorough assessment, and executing targeted repairs such as winding replacement, core repairs, oil filtration, or complete overhauling to restore functionality and safety. The process requires qualified technicians and often involves specialized facilities for large-scale work, with costs varying based on the transformer's size, the extent of damage, and the complexity of the required repairs.
Steps in Transformer Repair
​
1.Initial Assessment:
A professional assessment is crucial to identify the exact nature and extent of the fault, such as a short circuit or insulation failure.
​
2 .Safety & De-energization:
The transformer must be safely disconnected and isolated from the power grid to prevent electrical hazards before work begins.
​
3 .Diagnosis:
Technicians use diagnostic tools and methods to pinpoint the root cause of the failure.
​
4 .Repair Strategy:
-
Winding Repairs: If windings are damaged, they may need to be replaced or rewound.
-
Core Issues: The magnetic core can be repaired or replaced if damaged.
-
Oil Filtration: If there is an oil leak or degradation, the transformer will undergo oil filtration and replacement.
-
Overhauling/Refurbishment: For extensive damage, the entire transformer may be overhauled and refurbished.
​
5 .Testing:
After repairs, the transformer is tested to ensure it meets efficiency and safety standards.
​
When to Repair a Transformer
-
Overheating: Caused by overloading or insufficient cooling, leading to accelerated insulation aging and potential failure.
-
Oil Leaks: Requires stopping the leak and potentially replacing the oil.
-
Short Circuits: Can occur in the windings, requiring replacement of the damaged coils.
-
Degradation: General wear and tear that affects the transformer's reliability and safety.
​
​
