A low voltage power transformer,of which the voltage ratio is lower than 1000V, is an electrical device used in power systems, industrial equipment, and control circuits to transforer working voltage to a safe operating level. It operates on the principle of electromagnetic induction, enabling energy transfer between the primary and secondary windings. Typical characteristics include a wide power range, single phase or three phase configurations, and cast resin dry type or oil immersed designs. 25 kva power supply transformers 3 phase 110v to 220v provide functions such as electrical isolation and voltage regulation, while emphasizing low losses, high short circuit withstand capability, effective heat dissipation, and overall safety and reliability.
1.Voltage transformation and isolation:
A 3 phase 25 kva power supply transformer reduces higher voltage from 220V to below 110 V to supply equipment with a safe operating voltage, while electrically isolating different circuits.
2.Power distribution:
A 3 phase 25 kva power supply transformer steps down voltage within distribution systems to enable economical and efficient power transmission.
3.Voltage regulation:
Certain transformer types, such as magnetic saturation transformers, are capable of providing voltage stabilization.
1.By cooling method: Dry type and oil immersed transformers are commonly used. Dry type transformers are typically selected for indoor installations where low noise levels and oil-free operation are required.
2.By structure: Available in single phase and three phase designs.
1.Low losses: High quality core materials are used to minimize magnetic and copper losses.
2.High withstand capability: Windings and core structures are designed to tolerate high short circuit currents and mechanical stresses.
3.Safety and reliability: Enclosures are verified through airtightness testing and stress analysis to ensure safe operation.
4.Compact design: Optimized structural design allows reduced size and easy installation without compromising performance.
|
Rated Capacity |
25 kVA |
|
Primary Voltage |
220 V,400 V, 380 V, 415 V, 480 V |
|
Secondary Voltage |
400 V, 380 V, 208 V, 220 V, 240 V or customized |
|
Phase Number |
Three Phase |
|
Vector Group |
Y/Y、Δ/Y、Y/Δ |
|
No Load Loss |
120 to180 W |
|
Load Loss |
400 to600 W |
|
InsulationClass |
Class F, Class H (dry type); Class A (oil immersed) |
|
Cooling Type |
AN/AF (dry type); ONAN(oil immersed) |
|
Altitude |
≤ 1000 M (standard) |
|
1000M to 3000 M (customized) |
|
Aluminum Alloy |
A Transformer with Enclosure |
Stainless Steel |
|
Winding |
Casting Resin |
Ready to assemble |
Amorphous Alloy Core |
|
Winding Workshop |
Casting Storage Area |
Winding Drying Area |
Finished Product Storage |
|
Transformer Oven |
Casting Equipment |
Foil winding machine |