Transformer Oil & Dry Type

Oil and Dry Type Transformer from Arpan Power Projects is designed for efficient power transmission and distribution, with superior insulation, cooling performance and operational reliability. It is available in two types, oil filled and dry type, so you can match the transformer to your site. Instead of describing the two types in the abstract, this page follows a transformer through its working life, from the day you choose it to the day your load grows, and shows where each type makes life easier.

Day One: Choosing an Oil and Dry Type Transformer

An oil filled transformer uses insulating oil to insulate the windings and carry heat away, while a dry type transformer uses air to cool its windings and has no insulating oil. Neither type is better in every case. The right choice depends on where the unit will stand, the fire safety expectations of that location and the load it must carry. Arpan Power Projects offers both in our Oil and Dry Type Transformer range, so you can compare them with a single supplier. For a quick refresher on the main kinds of transformer, see this overview of transformer types.

Week One: Installation and Location

Oil filled units are commonly installed outdoors, in a yard or on a plinth, where there is room for the unit and for sensible oil containment. A dry type unit is usually the choice when the transformer must sit inside a building, close to the load, because it contains no insulating oil. If you want the full story on each type, see our Oil Filled Transformer and Dry Type Transformer pages.

Year One: Running Day to Day

Once energised, a transformer works quietly in the background. Our units are built for safe voltage transformation and reduced energy losses, which means less power wasted as heat and a lower cost to run over the years. In an oil filled unit, the oil carries heat to the radiators, and in a dry type unit, air does the cooling. Either way, good ventilation around the transformer helps it run at its best.

Year Five and Beyond: Looking After It

Oil filled transformers need periodic oil checks as part of their maintenance. Dry type transformers have no oil to test or top up, but they do need to be kept clean and dry, because dust and moisture can affect performance. Whichever type you buy, follow the maintenance schedule supplied with the unit and keep a simple log of inspections.

The Four Costs Over a Transformer’s Life

When you compare an Oil and Dry Type Transformer, look beyond the purchase price. Think about four costs. The first is the purchase itself. The second is installation, which includes civil work and any oil containment. The third is running cost, which depends on energy losses. The fourth is maintenance over the years. Looking at all four together gives a truer picture than price alone, and our team can help you compare them for your site.

When Your Load Grows

Loads rarely stay still. A new production line, an extra floor or a new feeder can push a transformer close to its limit. When that happens, review the rating before the unit is overloaded. Our oil filled range and our dry type range both go up to 10,000 kVA, so there is room to step up. Send us your present and expected load, and we will recommend the right kVA and type for your site.

Why Choose Arpan Power Projects for Oil and Dry Type Transformer

Arpan Power Projects supplies transformers and HT switchgear with practical technical guidance. We help you choose the type and rating, and we support you through to commissioning. A transformer works with protection and switching, so you can also look at our Compact Sub Station, our Control & Relay Panels, or browse the complete Transformer range.

Oil and Dry Type Transformer: What People Ask Before Buying

Which type should I choose if I am not sure?
Tell us where the unit will be installed, the load it must carry and any fire safety requirements. With those three details we can recommend oil filled or dry type.

Can I get both types from Arpan Power Projects?
Yes, our Oil and Dry Type Transformer range covers both oil filled and dry type units.

Does the transformer reduce energy losses?
Our transformers are designed for reduced energy losses. The actual figure depends on the rating and design, so ask us for the losses of the unit you select.

How often does a transformer need servicing?
It depends on the type, the load and the site. Oil filled units need periodic oil checks, while dry type units need cleaning and inspection. Follow the schedule supplied with your unit.

Can the transformer be used in industrial, commercial and utility projects?
Yes, it is suited to industrial, commercial, utility and infrastructure applications.