NTS | Services

Services We Provide

1. Erection, Testing, Commissioning of Power, Furnace, Traction and Distribution Transformers and Reactors.

Power transformer is second most costly equipment installed in power system. Hence, special care to be taken during installation of a new power transformer in an electrical substation. During accessing the interior of a power transformer, the worker should empty their pockets of all loose articles so that there would not be any risk of falling anything inside the transformer from their pocket. The tools used during the work, should be securely tied with cotton tap so that they can be recovered if accidentally fall into the transformer interior. Jute should not be used as cleaning materials for a transformer. Loose fibers of the jute may be remained even after completing the cleaning work, which may affect the insulating properties of the equipment in future. Cleaning should be done by clean cotton cloth without any suspended loose fibers. Generally, many parts of a power transformer are transported from manufacturers separately.

All the parts or components dispatched separately should be properly cleaned from inside and outside before being fitted to the transformer body. Special attention, to be given if, interior surface of the any component is found rusty.Transformer oil is also dispatched in separate sealed steel drums. This oil is highly inflammable hence no flame should be brought nearer to the transformer oil. Transformer oil and the cellulose-based insulating material used in transformer, both absorb moisture easily hence, transformer oil and cellulose-based insulated parts of the transformer should be handled very carefully. The main body of power transformer can be supplied by the manufacturer without or with insulating oil inside it. In both cases it is best practice to circulate dry and warm oil through it until its temperature is 5°C to 10°C above ambient. This should be done before allowing external access to the interior of the tank. The warm and dry oil should be circulated in the transformer during all the time the transformer remains open to atmosphere. The oil pump and all joints in the oil pipe work should be properly air tight otherwise air will enter in the transformer and get lodged in the vulnerable places such as winding.

2. Servicing, Site Repair, Overhauling and Re-conditioning of Power, Furnace, Traction and Distribution all kind of Transformers.

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