400kVA 10Kv/0.4Kv oil immersed transformer

400kVA Oil Immersed Transformer Manufacturer for Distribution Projects

Reliable 10kV oil immersed distribution transformer manufactured for industrial power distribution, commercial facilities and utility projects.

YINGBEN provides tested transformer solutions with stable performance, flexible voltage configuration and complete technical documentation for overseas projects.
400 kVA Rated Capacity
10/0.4 kV Rated Voltage
Dyn11 Vector Group
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400kVA Oil Immersed Transformer

400kVA Oil Immersed Transformer Technical Specifications

The following specifications are based on a tested 400kVA oil immersed transformer sample. Customized voltage levels and technical requirements are available for different project applications.
Rated Capacity 400 kVA Rated Voltage 10/0.4 kV
Frequency 50 Hz Phase Three Phase
Vector Group Dyn11 Cooling Method ONAN
HV Rated Current 23.1 A LV Rated Current 577.4 A
Tap Range ±2 × 2.5% Insulation Level 12/75/35 kV
Impedance Voltage 4% No-load Current 1%
No-load Loss 0.095 kW Load Loss 0.9 kW
Transformer Type Oil Immersed Distribution Transformer

Designed for Reliable Medium Voltage Distribution

Built with proven transformer technology for stable operation in industrial, commercial and utility distribution projects.
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Stable Power Distribution

Designed for industrial facilities, commercial buildings and utility networks with reliable electrical performance.

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Proven 10kV Transformer Design

Mature transformer structure with stable operation and long service life.

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Low Loss & High Efficiency

Optimized core and winding design helps reduce no-load and load losses.

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Strong Mechanical Structure

Robust oil tank and internal components ensure reliable transportation and outdoor installation.

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Flexible Voltage Configuration

Available for 10kV, 11kV and customized medium voltage systems.

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Complete Technical Documentation

Factory test reports and technical documents support project approval.

Suitable for Industrial and Infrastructure Power Distribution

400kVA oil immersed transformers provide reliable power conversion for industrial facilities, commercial buildings, renewable energy projects and utility distribution networks.
Industrial Facility Transformer Application

Industrial Facilities

Factory power supply and production lines requiring stable medium voltage distribution.

Commercial Building Transformer Application

Commercial Buildings

Shopping malls, offices and public facilities with reliable power requirements.

Solar Energy Transformer Application

Renewable Energy Projects

Solar and energy storage systems requiring efficient power distribution solutions.

Utility Distribution Transformer Application

Utility Distribution Networks

Medium voltage distribution networks and local power supply projects.

Why Choose YINGBEN Oil Immersed Transformers

Reliable transformer manufacturing capability backed by 26 years of production experience, quality management and project support.
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Manufacturer Since 1998

26 years of transformer manufacturing experience for reliable power distribution solutions.

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15,000㎡ Manufacturing Facility

Professional production environment with mature manufacturing equipment and processes.

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ISO 9001 Quality Management

Controlled production process to ensure consistent transformer quality.

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Mature Local Supply Chain

Stable supplier network supporting efficient production and delivery.

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Tested Transformer Design

Transformers tested according to applicable standards before delivery.

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OEM Project Support

Flexible customization support for overseas distributors and EPC partners.

Routine Testing Before Delivery

Every YINGBEN transformer is carefully tested before shipment to verify electrical performance, safety and long-term reliability for project applications.

Complete Factory Testing

Before delivery, each transformer is inspected and tested according to applicable transformer standards.

Testing Includes:

  • Transformer ratio test
  • No-load loss measurement
  • Load loss measurement
  • Insulation resistance test
  • Short-circuit withstand verification
  • Appearance inspection

400Kva Type Test Report

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Delivery performance test of finished oil immersed power transformer, factory quality inspection procedure

IEC Standard Based Transformer Design

Designed and tested according to IEC 60076 series requirements for reliable medium voltage distribution applications.

International Transformer Standards

YINGBEN oil immersed transformers are manufactured according to internationally recognized transformer standards to support industrial, infrastructure and utility projects.

  • IEC 60076 series transformer requirements
  • Internationally recognized design principles
  • Reliable performance for overseas applications
  • Technical documents available for project approval

IEC 60076 Series Standards

IEC 60076-1 Power transformers – General requirements
IEC 60076-2 Temperature rise requirements
IEC 60076-3 Insulation levels and dielectric tests
IEC 60076-5 Ability to withstand short circuit
IEC 60076 Series Compliance Supporting international transformer projects with reliable technical documentation.

Customized Transformer Solutions for Southeast Asia Projects

YINGBEN provides flexible oil immersed transformer solutions according to local grid requirements, project specifications and installation conditions.

Voltage Configuration Available

10kV / 0.4kV
11kV / 0.4kV
20kV / 0.4kV
22kV / 0.4kV
33kV / 0.4kV
35kV / 0.4kV

Project Customization Support

  • Voltage level customization
  • Transformer accessories selection
  • Terminal configuration
  • Technical documentation
  • OEM manufacturing support
Supporting Southeast Asian Power Projects Flexible transformer solutions for EPC contractors, distributors and industrial customers.

Customized Transformer Solutions for Southeast Asia Projects

YINGBEN provides flexible oil immersed transformer solutions according to local grid voltage requirements, project specifications and installation conditions.

High Voltage Level Customization

10kV
11kV
20kV
22kV
33kV
35kV

Project Customization Support

  • High voltage level customization
  • Transformer accessories selection
  • Terminal configuration
  • Technical documentation
  • OEM manufacturing support
Supporting Southeast Asian Power Projects Flexible transformer solutions for EPC contractors, distributors and industrial customers.

Frequently Asked Questions About 400kVA Oil Immersed Transformers

Find answers to common questions about specifications, customization, testing and project support.
What is the application of a 400kVA oil immersed transformer?
A 400kVA oil immersed transformer is commonly used for industrial facilities, commercial buildings, infrastructure projects and medium voltage distribution systems requiring reliable power supply.
Can the transformer voltage be customized according to project requirements?
Yes. YINGBEN can customize transformer voltage levels according to local grid requirements, project specifications and customer application conditions.
Do you provide transformer test reports?
Yes. Factory test reports and technical documents are available to support project evaluation, approval and installation.
What standards are used for transformer design and testing?
YINGBEN transformers are designed and tested according to internationally recognized transformer standards, including IEC 60076 series requirements.
Can you support OEM and customized transformer projects?
Yes. YINGBEN provides OEM manufacturing support, customized specifications and technical cooperation for overseas distributors, EPC contractors and project partners.
What is the typical production lead time?
Production lead time depends on transformer specifications, customization requirements and order quantity. Contact YINGBEN for project-specific delivery schedules.

Need a Reliable 400kVA Oil Immersed Transformer?

Contact YINGBEN for specifications, pricing and technical support.

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