This type transformers are used to change the input and output voltages up to 36 kV voltage level with capacity of 5000kVA power in desired ratios. The heat generated during operation is maintained and cooled at the normal temperature level with transformer oil.
Dry Type (Cast Resin) Transformers differ from oil type transformers by the cooling method. HV windings of transformer are coated with epoxy cast resin under vacuum. LV windings of transformer can be produced by both cast resin and resin impregnated prepreg method.
These transformers are produced in a range of 25- 5000kVA, up to 72,5kV mv level, designed with low losses, considering the harmonics, with short circuit and voltage fluctation resistivity. They have some very unique characteristics that require careful consideration.
These power transformers are used in electricity transmission and distribution networks to overcome differences between primary (input) & secondary (output) voltage. These are designed and manufactured according to the customer requirements at 5000 kVA and 72.5 kV voltage level and above.