Oil-Immersed Transformer Manufacturer | up to 35kV
Custom oil-immersed transformers for industrial, utility and power distribution projects in Malaysia, Vietnam and Southeast Asia. Built to Spec in 3 weeks
- IEC 60076 Compliant & Type Test Reports Available
- Hermetically Sealed / Conservator Type
- High-Efficiency & Low Noise
- Customized Voltage (11kV / 22kV / 33kV / 35kV)
Distribution Transformer Manufacturer Since 1998
Yingben is a distribution transformer manufacturer based in Foshan, China, with manufacturing experience since 1998.
We produce oil-immersed transformers, cast resin dry type transformers and compact substations for industrial, commercial and power distribution projects.
Yingben supports projects in Southeast Asia, including Malaysia and the Philippines, with project-specific customization and designs available up to 35kV.
Oil-Immersed Distribution Transformer Range
Common Oil-Immersed Transformer Models and Capacities
Explore common Yingben oil immersed distribution transformer capacities for utility, industrial and power distribution projects. Project-specific voltage and technical configurations are available.
Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
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Oil Immersed Transformer
View Model →Transformer capacity, primary voltage, secondary voltage, vector group and other technical configurations can be customized according to project requirements.
Request Custom ConfigurationOil-immersed transformer specificationsand Custom Options
Yingben oil-immersed distribution transformers can be configured according to project voltage, capacity, load characteristics, installation environment and technical requirements. Final specifications are confirmed through engineering review before production.
| Parameter | Available Options |
|---|---|
| Product Type | Oil-Immersed Distribution Transformer |
| Rated Capacity | 50–10000 kVA or customized |
| Primary Voltage | 6kV, 10kV, 11kV, 20kV, 22kV, 33kV |
| Secondary Voltage | 0.4kV, 0.415kV, 0.44kV or customized |
| Maximum Voltage Class | Up to 35kV |
| Frequency | 50Hz / 60Hz |
| Phase | Three Phase |
| Cooling Method | ONAN |
| Vector Group | Dyn11, Yyn0 or customized |
| Winding Material | Copper / Aluminum |
| Tap Changer | Off-Circuit Tap Changer |
| Tapping Range | ±2 × 2.5% or customized |
| Insulating Fluid | Mineral Oil or project-specified option |
| Tank Structure | Hermetically Sealed / Conservator Type |
| Installation | Outdoor / Indoor |
| Manufacturing Standard | GB / Project-Specified Requirements |
| Customization | OEM / ODM Available |
Specifications shown above represent common configuration options. Actual parameters, testing requirements and applicable standards will be confirmed according to the project specification and destination market.
Production of oil-immersed distribution transformer
core cutting & stacking
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Certifications and Compliance
Yingben operates under an ISO 9001 quality management system and manufactures oil-immersed distribution transformers according to applicable GB standards and confirmed project specifications. Technical standards, testing requirements and certification needs are reviewed before production.
ISO 9001 Quality Management
Our quality management system supports controlled procedures across material inspection, manufacturing, assembly, testing and final product inspection.
GB Manufacturing Standards
Standard oil-immersed transformers are manufactured according to applicable Chinese GB requirements, with final parameters confirmed against the approved technical specification.
IEC-Based Project Requirements
Where IEC 60076-based requirements are specified, our engineering team can review the design parameters, testing scope and required technical documentation.
Local Certification Cooperation
For markets requiring local certification or utility approval, Yingben can evaluate OEM manufacturing and technical cooperation with qualified local partners.
Why Choose Yingben
Mature Supply Chain
Located within an established transformer manufacturing cluster, Yingben maintains long-term relationships with suppliers of silicon steel, copper, aluminum, insulating materials, transformer oil and electrical components.
Flexible Production & Delivery
Our flexible production system supports standard oil-immersed transformers, customized specifications and project-based quantities. Production schedules are confirmed according to each order’s requirements.
Competitive Manufacturing Cost
An established domestic supply chain, direct factory communication and efficient production management help control costs while maintaining reliable materials, quality inspections and routine testing.
Transformer Manufacturing Since 1998
Our team supports customized voltage, capacity, winding material, impedance, tapping range and accessories for power distribution, industrial and renewable energy projects.
Key Features of Yingben Oil-Immersed Transformers
Yingben oil-immersed distribution transformers combine proven manufacturing experience with flexible project customization. Available for common Southeast Asian grid voltages and operating environments, they provide reliable solutions for utility distribution, industrial facilities and renewable energy projects.
High-Efficiency Core Design
High-quality silicon steel cores and optimized winding structures help reduce no-load loss, load loss and operating noise while improving long-term energy efficiency.
Reliable Oil Cooling and Insulation
Mineral oil provides effective electrical insulation and natural ONAN cooling, supporting stable transformer operation under continuous and variable load conditions.
Tropical Environment Protection
Sealed tank structures, protective coatings and corrosion-resistant options can be configured for hot, humid, rainy and outdoor operating environments.
Grid-Compatible Voltage Options
Common configurations include 11kV, 22kV and 33kV systems with 50Hz or 60Hz frequency. Voltage ratios and tapping ranges can be adjusted to project requirements.
Stable Voltage Regulation
Off-circuit tap changers and project-specific tapping ranges help maintain suitable output voltage under different grid and load conditions.
Flexible Materials and Customization
Copper or aluminum windings are available according to efficiency and budget requirements. Capacity, vector group, impedance and accessories can also be customized.
Routine Testing Before Delivery
Each Yingben oil immersed transformer undergoes routine factory testing before shipment to verify electrical performance, connection accuracy and manufacturing quality according to the approved project specification.
Electrical & Factory Inspection
- Winding Resistance Measurement
- Voltage Ratio Verification
- Vector Group Verification
- No-Load Loss and No-Load Current Test
- Load Loss and Impedance Voltage Test
- Insulation Resistance Measurement
- Applied Voltage Test
- Induced Voltage Test
- Oil Leakage Inspection
Routine Test Records Available
Routine factory testing is carried out for each transformer before delivery. Relevant factory test records can be provided according to customer and project documentation requirements.
Third-Party Type Test Reports & Model Coverage
Independent third-party test documentation is available for selected Yingben oil immersed transformers and registered transformer series. Relevant type test reports, model registration documents and technical test records can be provided for project evaluation upon request.
400 kVA Oil Immersed Transformer — Third-Party Test Report
Selected pages from the available independent test documentation for the 400 kVA oil immersed transformer.
1250 kVA Oil Immersed Transformer — Third-Party Test Report
Selected pages from the available independent test documentation for the 1250 kVA oil immersed transformer.
S20-M Oil Immersed Transformer Series — 630 to 2500 kVA
The registered model range covers S20-M-630～2500/10-NX2. The available third-party type test report is based on an S20-M-2000/10-NX2 2000 kVA transformer sample from the same registered series.
The registration range includes transformer capacities within the S20-M 630–2500 kVA series. The third-party type test sample shown below is the 2000 kVA model and should not be interpreted as an individual type test for every capacity in the registered range.
Relevant third-party reports, model registration documents and technical records can be provided according to project requirements.
Configured for Southeast Asian Project Requirements
Power distribution requirements vary across Southeast Asian markets. Yingben reviews each project according to the local voltage level, frequency, installation environment and applicable technical requirements.
Grid Compatibility
Voltage and frequency configurations including 11kV, 22kV, 33kV, 50Hz and 60Hz can be reviewed according to the destination grid and project specification.
Tropical Environment Options
Sealing, coating, corrosion protection and accessories can be configured for humid, hot and outdoor operating environments.
Project-Based Customization
Capacity, voltage ratio, winding material, vector group, impedance, tapping range, terminal arrangement and accessories can be customized.
Local Partner Cooperation
For markets requiring local certification or utility approval, we can evaluate OEM cooperation with qualified local partners.
OEM Cooperation for Local Market Requirements
Yingben welcomes cooperation with transformer distributors, electrical contractors, EPC companies and qualified local manufacturers across Southeast Asia. We provide manufacturing support based on agreed technical specifications, quality requirements and branding needs.
OEM Manufacturing
Transformers can be manufactured according to agreed drawings, technical specifications, winding materials, accessories and testing requirements.
Private Label Support
Product nameplates, brand identification, documentation and packaging can be customized according to agreed private-label requirements.
Technical Coordination
Our engineering team reviews voltage ratio, capacity, impedance, vector group, tapping range, terminal arrangement and accessories before production.
Local Compliance Cooperation
For projects requiring local certification or utility approval, we can coordinate manufacturing and technical requirements with qualified local partners.
Frequently Asked Questions
Find answers about quotations, pricing, order quantities, production lead times, technical documents and after-sales support.
What information should I provide for an accurate transformer quotation?
Please provide the rated capacity, primary and secondary voltage, frequency, vector group, winding material, quantity, installation environment and delivery destination. If available, you may also send a technical datasheet, single-line diagram, BOQ or tender specification. Our engineering team will review the information before preparing the configuration and quotation.
How is the price of an oil-immersed transformer calculated?
Pricing depends on the rated capacity, voltage level, copper or aluminum windings, required loss level, impedance, tapping range, insulating fluid, accessories, testing requirements and order quantity. Packing and shipping terms also affect the final cost. Each transformer is therefore quoted according to the confirmed project specification.
Can I order one transformer or a small trial quantity?
Yes. Yingben supports single-unit project orders, small-batch procurement and trial orders, subject to the transformer specification and material availability. For distributors and OEM partners, a trial order can be used to confirm product quality, technical documentation, communication and delivery performance before regular purchasing begins.
What is the production lead time?
Production lead time depends on the transformer capacity, voltage level, customization, material requirements, order quantity and inspection scope. The final schedule is confirmed after the technical specification and drawings have been approved. We provide a clear timeline covering drawing confirmation, production, testing, inspection and packing.
What technical documents and inspection options are available?
Depending on the project, Yingben can provide a technical datasheet, general arrangement drawing, nameplate drawing, terminal arrangement, routine test report, packing list and installation instructions. Customer inspection, video inspection, factory acceptance testing or third-party inspection can also be arranged, with the scope, schedule and costs agreed before production.
What warranty and after-sales support do you provide?
Warranty terms are confirmed in the quotation and sales contract according to the product and project conditions. Yingben provides remote engineering support for installation guidance, commissioning questions and fault analysis. Spare parts can be supplied when required, while local installation or on-site service can be coordinated with the customer’s contractor or local partner.
Request a Quote for Your Transformer Project
Whether you need oil immersed transformers, dry type transformers, compact substations, or customized distribution transformer solutions, Yingben provides reliable products and professional technical support for power distribution projects.
Submit your project requirements to receive:
- Transformer technical datasheets and product specifications
- Customized quotation based on KVA, voltage level, installation type, and project requirements
- Engineering support for transformer selection and application solutions
Since 1998, Yingben has manufactured distribution transformers for industrial and power distribution projects, providing quality control, technical support and flexible OEM solutions.
Please fill in the form below with your project details. Our engineering team will review your within 24 hours. After receiving your requirements, we will provide: Recommended technical configuration ,Factory quotation , Estimated production lead time , Available drawings and test documents.