Single Phase To 3 Phase Transformer Manufacturers – Phase Conversion Experts
Subian Electric manufactures phase conversion transformers that allow three-phase equipment – motors, compressors and machinery – to run from a single-phase supply. Our 50,000-square-metre factory in Xuzhou, Jiangsu, China, has supplied power equipment to 50+ countries since 2019.
As a factory-direct manufacturer and supplier, we build single-phase input, three-phase output units from 5 kVA to 500 kVA, engineered to your motor starting method and duty cycle, with complete test documentation.
Tell us your single-phase supply, motor rating and starting method. Our export team will confirm the design, price and lead time.
Since 2019 · 50,000m² · 350+ Staff
Single-Phase Input Transformers We Manufacture
Custom 1-to-3 phase conversion transformers on oil-immersed and dry-type platforms, sized for motor starting and continuous three-phase loads in agriculture, workshops and small industry.
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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 Single Phase To 3 Phase Transformer? Types & Buyer Guide
A single phase to three phase transformer – also called a phase conversion transformer – derives a three-phase output from a single-phase supply using passive windings and phase-shifting capacitors or inductors. It lets standard three-phase motors and equipment run where only single-phase power is available.
The most common use is driving three-phase irrigation pumps, workshop machinery and air compressors from a single-phase rural or commercial supply. A properly designed unit starts the motor reliably and balances the phases under load.
- Motor-start capable – designs sized for locked-rotor current and starting method.
- 5 kVA – 500 kVA – custom capacity range for agriculture and light industry.
- Passive and robust – no power electronics – reliable in remote locations.
- 50,000m² factory – winding, drying, assembly and testing under one roof.
- 350+ employees – engineering support for motor and load matching.
- OEM / ODM & wholesale – private labelling, packaging and volume pricing.
Main Types of Single Phase To Three Phase Transformers
Three build options cover most single-phase input projects:
Capacitor-assisted static type
Phase-shifting capacitors create the missing phases – simple and economical for fixed motor loads.
Winding-connected type
Dedicated conversion winding with balanced three-phase output for continuous and mixed loads.
Dry-type indoor unit
Fire-safe, low-maintenance build for workshops, pump rooms and commercial facilities.
Single Phase To Three Phase Transformer Specifications
| Parameter | Specification |
|---|---|
| Input | Single-phase 0.22 kV – 0.4 kV |
| Output | Three-phase 0.4 kV / 0.48 kV |
| Rated capacity | 5 kVA – 500 kVA |
| Frequency | 50/60 Hz |
| Motor starting | Direct-on-line / star-delta compatible |
| Standard | IEC 60076 / GB 1094 |
Phase Conversion Manufacturing at Our 50,000 m² Factory
Each unit passes controlled material preparation, winding, vacuum drying, assembly, inspection and packing at our Xuzhou facility, with the conversion performance verified in the factory test room.
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 Single Phase To Three Phase Transformer Supply
Rebrand or resell phase conversion transformers with full factory backing – custom nameplates, packaging and documentation included.
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
Transformer-Based Phase Conversion vs Rotary and Static Converters
Rotary converters use a motor-generator set that is noisy, heavy and power-hungry. Static electronic converters are cheap but harmonic-rich and weak at motor starting. A transformer-based phase converter balances the two – robust, clean output and strong starting torque.
For irrigation and workshop duty where the motor must start every day and run unattended, the transformer-based solution delivers the best balance of reliability, maintenance and total cost.
Choosing a Single Phase To 3 Phase Transformer Manufacturer
The critical question is whether the manufacturer can size the unit for your motor’s starting current – most catalogue units cannot start a three-phase motor reliably. Look for engineering support and test evidence, not just a price list.
Subian Electric brings a 50,000m² factory, 350+ employees, ISO9001, CE and UL certification and export to 50+ countries, with in-house winding design for phase conversion projects.
Send your motor rating, starting method and duty cycle – our engineers will confirm the unit design and price before production.
Certifications & Quality Assurance
Our phase conversion transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and factory testing on every unit.
Product Certifications
Single Phase To 3 Phase Transformer FAQ: Motor & Sourcing Questions
Answers to the questions buyers ask most when running three-phase equipment from a single-phase supply.
Can a single-phase supply run a three-phase motor?
How do I size the transformer for my motor?
What is the difference between a static converter and this type of transformer?
Can the unit run more than one motor?
Do you support OEM branding?
What is the lead time?
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.