Expansion Tanks
Technicial Specifications
Power Range:
All standard and intermediate powers between 25 kVA and 5000 kVA
Voltage Range:
All voltage levels between 0-36 kV
Number of Phases:
With 1 phase or 3 phase options
Tap Type:
With idle or on-load tap changer
Cooling Method:
ONAN and/or ONAF
Place of Use:
Internal and/or External areas
Loss Class:
Standard production A+ class (AooAk); optional according to customer requirements
Conductor Type:
Aluminum and/or copper
Terminal Type:
Porcelain insulator, plug-in, cable box, side outlet
Structure:
Distribution Transformers with Expansion Tank are designed to be open to the atmosphere and do not require any pressure adjustment. Only the level adjustment of the insulation oil is sufficient. The expansion tank tolerates the expansion of the insulation oil by expelling the air gap inside it to the atmosphere and withdrawing it. This tank is designed according to the maximum expansion rate of the insulation oil and the level is adjusted according to this expansion amount during filling. Air exchange is carried out with a system that protects against humidity; an air dryer is used that removes humidity and is replaced when it becomes humid.
Advantages:
> No dangerous pressure will ever form inside the transformer. Therefore, there will be no pressure problems in overload.
> Deformation in the metal will be less since there is no expansion.
> It has a more suitable structure for on-site maintenance/repair.
The Most Important Disadvantage:
It has elements and components that require periodic control, testing, replacement and maintenance.
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