3 Phase To Single Phase Transformer Manufacturers – Factory-Direct Supply
Jiangsu Subian Power Equipment Co., Ltd. manufactures custom phase conversion transformers that take a three-phase supply and deliver a balanced single-phase output, from our 50,000-square-metre factory in Xuzhou, Jiangsu, China. Since 2019, our 350+ employees have supplied transformers to agriculture, industry and utilities in more than 50 countries.
As a factory-direct manufacturer and supplier, we engineer each phase conversion unit to your voltage, capacity and connection requirements, with type test documentation, factory pricing and OEM/ODM support.
Send us your input supply, required output and load details. Our export team will respond with a quotation, lead time and connection proposal.
Since 2019 · 50,000m² · 350+ Staff
Phase Conversion Transformers We Manufacture
Custom 3 phase to single phase transformers built on oil-immersed and dry-type platforms – single-phase pole-mounted units, three-phase input designs and dual-output configurations for agricultural, industrial and commercial applications.
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10kV Dry-Type Transformer-SCBH series Amorphous Alloy
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20-35KV Dry-Type Transformer
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20-35KV SCB Series Epoxy Resin Dry-Type Transformer
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20KV Oil-immersed Distribution Transformer
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35KV Oil-immersed Power Transformer
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6-10KV Oil-Immersed Power Distribution Transformer
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Current Transformer –10KV Indoor High Voltage
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Current Transformer–LMZK Wound Current Transformer300/5a
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Current Transformer–LSY-10 transformer Integrated CT
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current transformer–LXK high voltage zero sequence
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dry type distribution transformer-6-10 KV SCB series epoxy resin cast
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Electrical Transformers–JDZ – 10 Power Voltage
What Is a 3 Phase To Single Phase Transformer? Types & Buyer Guide
A 3 phase to single phase transformer converts a three-phase supply into a single-phase output, either through a connected winding arrangement or an isolated conversion unit. It lets equipment that only needs single-phase power – lighting, heating, small motors – run from an existing three-phase network without re-wiring the site.
These transformers are commonly specified for agricultural irrigation, rural electrification, workshops and commercial buildings fed from a three-phase line. The right unit keeps the single-phase load balanced across the three phases, protecting both the transformer and the supply network.
- Custom phase conversion – 3-to-1 and dual-output configurations engineered to your supply and load.
- Voltage range to 132 kV – phase conversion transformers for low voltage and medium voltage networks.
- 50,000m² factory – in-house winding, drying, assembly and testing under one roof.
- 350+ employees – engineering, production, quality and export teams per order.
- Type test evidence – reports and connection diagrams supplied for project approval.
- OEM / ODM & wholesale – private labelling, custom packaging and container volume supply.
Main Types of Phase Conversion Transformers
Three configurations cover most phase conversion projects:
Oil-immersed conversion
Outdoor-rated units for agricultural and industrial sites, cooled and insulated by transformer oil.
Dry-type conversion
Cast-resin or open-wound indoor units where fire safety and low maintenance matter.
Dual-output custom
Single and three-phase outputs from one transformer for mixed-load workshops and facilities.
Phase Conversion Transformer Specifications
| Parameter | Specification |
|---|---|
| Input supply | Three-phase, 0.4 kV – 132 kV class |
| Output | Single-phase, 0.22 kV – 11 kV |
| Rated capacity | 10 kVA – 3000 kVA (custom) |
| Rated frequency | 50/60 Hz |
| Connection | Yyn0 / Dyn11 / custom conversion winding |
| Standard | IEC 60076 / GB 1094 |
Phase Conversion Transformer Manufacturing: Full Factory Control
From material preparation to winding, vacuum drying, assembly, inspection and delivery – every custom unit is built and tested at our Xuzhou facility, and buyers are welcome to audit the factory before shipment.
Production Workshop
Controlled winding, core processing and vacuum drying with quality checkpoints between every stage, so quality is built in from the start.
Quality & Testing Center
Routine inspection on every unit before delivery, with type test reports supporting project approval and market certification.
Materials & Components
Core materials, windings and components are checked against the approved bill of materials on every production run.
OEM / ODM / Agency Supply
Custom branding, packaging and configurations for global partners – from nameplate to complete product design – supported by a dedicated export team.
OEM, ODM & Wholesale Phase Conversion Transformer Supply for Distributors
Brand the units yourself or resell them – we provide the factory backing, custom engineering and volume pricing that distributors and importers need.
OEM / ODM
Factory-Direct
Custom branding, packaging and product variants built on our standard platforms – from a nameplate to full product design.
Custom nameplate · Custom packaging · Full test docs
Wholesale Supply
Volume Pricing
Factory pricing with flexible container quantities, mixed models per container and reliable global shipping for volume buyers and importers.
Container MOQ · Mixed models · Global shipping
Distributor Support
Channel Partners
Dedicated account management, technical documentation and priority production for distributors and project clients.
Account manager · Sales material · Priority lead times
Static Converter vs Phase Conversion Transformer: Which Solution Fits?
Electronic static converters are compact and inexpensive at small ratings, but they generate harmonics, cannot start heavy motors reliably and shorten the life of sensitive loads. A phase conversion transformer is passive, robust and delivers a true sinusoidal output with no harmonic content.
For irrigation pumps, workshop machinery and remote facilities that must run for years with minimal maintenance, a transformer-based solution usually wins on reliability and total cost of ownership – especially at higher capacities where converters become costly.
3 Phase To Single Phase Transformer Manufacturers & Suppliers: How to Choose
Phase conversion transformers are a specialist product, so buyers should look for manufacturers with real transformer engineering rather than generic trading companies. Compare certification, type test evidence and the ability to engineer the conversion winding to your supply.
Subian Electric engineers custom conversion windings on our standard oil-immersed and dry-type platforms, backed by a 50,000m² factory, 350+ employees and ISO9001, CE and UL certification.
To request a quotation, send your input voltage, output requirement, capacity and quantity. We confirm connection details on drawings before production.
Certifications & Quality Assurance
Every phase conversion transformer we ship is produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports – verifiable evidence of quality and compliance.
Product Certifications
3 Phase To Single Phase Transformer FAQ: Selection & Factory Sourcing
Common questions about phase conversion transformers, how they are sized and how to source them from a factory.
What is a 3 phase to single phase transformer?
How do I size a phase conversion transformer?
What is the difference between a phase converter and a phase conversion transformer?
What connection types are used for phase conversion?
Do you build custom phase conversion transformers?
What documents are provided with each unit?
Contact Subian
Need the Right Specification?
Tell us your target market, product type, quantity and technical requirements. Our team will help you identify a suitable configuration for your project.