Birlesik ltd.

Oil Type Distribution Transformers

Oil type distribution transformers are transformers up to 5000 kVA power and 66 kV voltage class, with no-load or on-load tap changer, ONAN or ONAF cooling type, single-phase or 3-phase, suitable for external or internal environment. Oil-type transformers provide cooling of the transformer by dissipating the heat generated during operation with transformer oil.

- Hermetically Sealed Transformers

Hermetic transformers are transformers that are completely closed to the atmosphere, where the oil does not come into contact with the air.
Since the transformer oil does not absorb moisture, hermetic transformers have a longer life than conservator/free breathing transformers (with expansion tanks) and do not require oil change.

- Conservator/Free Breathing Transformers

Active parts of conservator/free breathing transformers (with expansion tanks) have the same features as hermetic transformers.
Transformers with expansion tanks are open to the atmosphere. The air dryer (silica gel) in the tank of the transformer ensures that the moisture formed in the transformer is removed.

Medium Power Transformers

Oil type transformers are produced with power between 5000 - 31500 kVA and voltage class up to 66 kV, with no-load or on-load tap changer, ONAN or ONAF cooling type, which are suitable for external or indoor environments.