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This is a three-phase dry-type non-encapsulated eco-friendly ventilated distribution transformer with rated capacity of 250kVA and voltage class of 33kV / 35kV. It adopts a non-encapsulated structure with natural ventilation, featuring high safety, environmental protection, low loss, and stable operation. It is widely used in urban power grids, industrial and mining enterprises, commercial buildings, and various indoor power distribution systems.


Non-encapsulated structure, good ventilation and heat dissipation
Eco-friendly, flame-retardant, and pollution-free
High mechanical strength, strong short-circuit resistance
Low noise, high efficiency, and low operation cost
Suitable for indoor and environment-sensitive places
Long service life and easy maintenance


Capacity: 250kVA
Phase: Three-phase
Voltage Class: 33kV, 35kV
Type: Dry-type, non-encapsulated, ventilated
Cooling: Natural air cooling
Insulation Class: F or H
Frequency: 50Hz / 60Hz
Application: Indoor power distribution, urban grid, industrial & commercial use


Urban power distribution substations
Industrial and mining enterprises
Commercial buildings, hospitals, data centers
Environmentally sensitive and fire-safety required places
High-rise buildings and infrastructure projects