A Guide to Know About the Dry Type Transformer
Dry-type transformers make use of solid and insulator materials to provide insulation to windings and also to natural air for cooling. This is in contrast with the conventional type of transformers. These are supplied mineral oil to insulate the windings. The insulation given is non- combustible and you do not have to worry about the leakage issues.
The manufacturing and the repair process are costly for dry-type transformers, which makes them costlier than the oil-filled transformers. The company Surplec sells power transformers in Canadian provinces of Quebec, Alberta, and Ontario. The company supplies medium voltage dry type transformers certified CSA / UL. The products provided by the company can be personalized according to your requirements.
Know About the Dry Type Transformer
These come in two types. They are:
- Cast Resin Transformer (CRT)
- Vacuum Pressure Impregnated (VPI)
Cast Resin Transformer (CRT)
This transformer is mostly used in such areas which are subjected to moisture. This is mainly because its windings are enclosed with epoxy resin. Due to this, the moisture cannot go deep into the winding material. The transformer can work in good condition without any kind of damage in moisture affected areas. It is non-absorbent type.
These have excellent overload ability and are very efficient. It is not inflammable. So, no risk of fire and indoor insulations can be done. The maintenance cost is also less.
Vacuum Pressure Impregnated (VPI)
Less amount of flammable material is used for providing the insulation of windings. The windings are made of trips in the form of continuous layers. The changes are made in winding to accommodate higher voltages. The windings are made of disks. The optimum level of moisture protection is provided.
These have various benefits like for instance they have high level of mechanical strength. No instances of temperature fluctuation. Maintenance is easier and there are a smaller number of fire hazards.
Main Advantages of Dry Type Transformer and Its Application
The safety of the people and the property is maintained. These can be installed easily, are environmentally friendly, overloads can be supported. The fire hazard is avoided, is durable, good resistance to short circuit events and these can be used in moisture prevalent and contaminated areas.
Dry-type transformers are used extensively in oil, gas and chemical industries and also in the places which are very sensitive in regards to the environment.
Thus dry-type transformers are the best option for the installations, which focus on environmental protection and fire safety. Mainly the indoor substations are included and even the outdoor ones which are near the sensitive sites.