400kVA oil immersed transformer distibution type three phase

Advanced 400kVA Oil-Immersed Distribution Transformer | High-Efficiency Power Solution

Welcome to our premier line of power distribution equipment. Our 400kVA oil-immersed transformer is expertly engineered to deliver robust, reliable, and energy-efficient power transformation for industrial, commercial, and utility applications. Utilizing state-of-the-art manufacturing techniques and premium-grade materials, this three-phase oil-immersed transformer ensures minimal energy loss, superior thermal performance, and an exceptionally long operational lifespan.

Whether you are upgrading an existing electrical substation or powering a new heavy-duty facility, our 400kVA step-down transformer provides the dependable voltage regulation and safety standards your infrastructure demands.

Inquire Now Next Product

Specification of 400kVA oil immersed transformer

Detailed Technical Specifications Table

Technical Parameter	Specification Detail
Rated Capacity	400 kVA
Primary Voltage	10kV, 11 kV, 22kV, 33 kV (Customizable)
Secondary Voltage	0.4kV 400V 230V, Customizable)
Frequency	50Hz or 60Hz
Number of Phases	Three-Phase
Vector Group	Dyn11, Yyn0 (or as requested)
Cooling Type	ONAN (Oil Natural Air Natural)
Winding Material	Electrolytic Copper 99.9 purity or Aluminum
Core Material	High-grade cold-rolled grain-oriented (CRGO) silicon steel sheets
Tap Changer	Off-circuit tap changer 2 *2.5% or 5% or OLTC
Insulation Level	A-class / Mineral insulating oil
Impedance Voltage	4% to 4.5%(Standard)
Ambient Temperature	-25℃ to +40℃
Altitude	≤1000m

Features of oil transformer

400kVA Oil-Immersed Distribution Transformer

Rated Capacity: 400kVA power output, delivering stable and consistent voltage regulation for heavy-duty applications.
High-Efficiency Design: Low no-load and load losses compliant with international standards, significantly reducing long-term operating costs and energy waste.
Advanced Cooling System: Superior mineral oil immersion ensures exceptional heat dissipation, maintaining optimal operating temperatures even under continuous peak loads.
Robust Construction: Hermetically sealed or conservator tank options built with high-grade cold-rolled grain-oriented (CRGO) silicon steel cores and electrolytic copper (or aluminum) windings for extended service life.
Enhanced Safety & Protection: Equipped with pressure relief devices, oil level indicators, and thermometer provisions to safeguard against overloads and internal faults.
Weather & Corrosion Resistant: Rugged corrugated or radiator tanks finished with multi-layer anti-corrosion coating, suitable for both indoor and harsh outdoor environments.
Compliance Standards: Manufactured in strict adherence to IEC 60076, IEEE, and ISO9001 quality management standards.

400kVA oil transformer application

Industrial parks, factories, and manufacturing plants
Commercial real estate, office complexes, and high-rise buildings
Municipal utility grids and rural power distribution networks
Renewable energy setups (Solar and wind farm step-up substations)

400kVA oil transformer application

FAQ

Q: What are the primary voltage and secondary voltage options available for this 400kVA transformer?

A: The standard primary voltages are10kV, 11kV, 22kV, or 33 kV, and the standard secondary voltage is 0.4 kV 400V 230V. However, we fully support custom voltage ratios tailored to your local grid requirements.