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The word “Overhauling” means where each and every part of the equipment isinspected after its complete dismantling and abnormalities whatever observed arerectified with the view to bring back the equipment to its original condition fortotally trouble free and safe operation. It differs from routine preventive and breakdown maintenance where inspection is limited to important part or parts,which are likely to fail or have failed.

The electrical device which can transfer electrical energy from one circuit to another circuit (without any connection) by means of mutual induction between the windings, is called a transformer. It works on the principle of electromagnetic induction. The transformer consists of the primary winding and secondary winding. It is used to increase or decrease the voltage levels of a circuit. In the entire electrical distribution system, the transformer is the main part. If the transformer doesn’t work properly, then the entire distribution system may get damaged and there will be no chance of transferring electrical energy.

Present development and production of power transformers with lower losses in addition to replacement of outdated transformers assume regular measurement of losses in both load and no-load regime. These measurements are very demanding especially in the case of on-situ measurements. The complexity of the measurements grows with the size of transformer. This paper presents one typical test of losses measuring in load and no-load regime of power transformer with nominal power of 40 MVA in HPP Perucica.

With the aid of our experienced team, we are devoted to providing an exquisite range of Oil Cooled Transformer Repairing Service to our prestigious clients. This repairing service is available in various types. Also, we believe in offering complete satisfaction to the clients and for this, we provide repairing service as per client need.

A power transformer is the most costly and essential equipment piece of equipment within an electrical substation. As such it is desirable to perform various preventative maintenance activities to ensure the transformer maintains a high level of performance and a long functional life. A power transformer requires various routine maintenance tasks including measurement and testing of different parameters of the transformer. There are two main types of maintenance of transformer. We perform one group on a routine basis (known as preventative maintenance), and the second group on an ad-hoc basis (i.e. as required). That means for getting smooth performance from a transformer we have to perform some maintenance actions on a regular basis.