1. Product Overview

250kVA 11kV/0.4kV Three Phase Oil Immersed Distribution Transformer

The HENTG POWER 250kVA 11kV/0.4kV Three Phase Oil Immersed Transformer is designed for reliable power distribution in Southeast Asian utility networks, industrial plants, commercial buildings, infrastructure projects, and renewable energy applications. Manufactured according to IEC 60076 standards, this transformer delivers high efficiency, low losses, stable voltage regulation, and long service life under tropical climate conditions.

Built with premium-grade silicon steel cores and high-conductivity copper or aluminum windings, the transformer ensures excellent electrical performance while reducing operating costs. The sealed oil-filled design provides efficient cooling, enhanced insulation strength, and protection against moisture and environmental contamination.

Product Advantages

High Energy Efficiency

Designed with low-loss CRGO silicon steel core to minimize no-load and load losses, reducing electricity consumption and lifecycle costs.

Excellent Voltage Stability

Provides stable voltage output even under fluctuating load conditions, helping protect sensitive equipment and improve power quality.

Tropical Climate Adaptability

Suitable for high-temperature, high-humidity, and coastal environments commonly found in Southeast Asian countries.

Long Service Life

High-quality insulation materials and transformer oil ensure dependable operation for over 25 years with proper maintenance.

Low Maintenance Requirements

Hermetically sealed tank design reduces oil oxidation and minimizes maintenance costs.

Strong Short-Circuit Withstand Capability

Mechanical structure is optimized to withstand network disturbances and fault conditions.

Reliable Cooling Performance

ONAN cooling system ensures efficient heat dissipation and stable operation.

5. FAQ for Southeast Asian Distributors & EPC Contractors

Q1. Can the transformer be customized for local utility requirements?

A: Yes. We can customize voltage, frequency, vector group, impedance, tap changer range, cooling method, and accessories according to local utility standards and project specifications.

Q2. Does this transformer comply with IEC standards?

A: Yes. The transformer is manufactured and tested according to IEC 60076 standards and can provide routine test reports before shipment.

Q3. Is copper winding available?

A: Yes. Both copper winding and aluminum winding options are available based on project requirements and budget considerations.

Q4. Can HENTG POWER support EPC and government tender projects?

A: Yes. We have extensive experience supporting EPC contractors, utility companies, industrial projects, and government tenders with technical documentation and project-specific designs.

Q5. What documents can be provided?

A: We can provide GA drawings, nameplate drawings, test reports, technical datasheets, operation manuals, packing lists, certificates, and inspection documents.

Q6. How long is the production lead time?

A: Normally 15–30 days depending on technical specifications, order quantity, and project requirements.

Q7. Is the transformer suitable for tropical climates?

A: Yes. The transformer can be designed for high humidity, high temperature, coastal, and tropical environments commonly found in Indonesia, Philippines, Vietnam, Thailand, Malaysia, and Cambodia.

Q8. Why do distributors choose HENTG POWER?

A: Distributors choose HENTG POWER because of competitive factory pricing, stable product quality, flexible customization, fast delivery, professional engineering support, and long-term partnership opportunities.

About HENTG POWER

HENTG POWER is a professional transformer manufacturer with a production base covering over 100,000㎡ and more than 250 employees, including 30+ senior engineers.

We specialize in:

• Oil Immersed Transformers
• Dry Type Transformers
• Pad Mounted Transformers
• Compact Substations
• Power Transformers
• Distribution Transformers

Our products are exported to Southeast Asia, Africa, the Middle East, South America, and other international markets, serving utility companies, EPC contractors, industrial users, and transformer distributors.

Our mission is to provide reliable, efficient, and customized power distribution solutions that help customers improve grid stability and reduce operating costs.

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Send us your technical requirements today and receive a customized transformer solution from our engineering team. We support OEM, ODM, distributor partnerships, EPC projects, and utility tenders worldwide.