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.


2019年以降 · 50,000m² · 350人以上のスタッフ
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.
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工場 – winding, drying, assembly and testing under one roof.
- 350人以上の従業員 – engineering support for motor and load matching.
- OEM / ODM & 卸売 – 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
| パラメータ | 仕様 |
|---|---|
| Input | Single-phase 0.22 kV – 0.4 kV |
| Output | Three-phase 0.4 kV / 0.48 kV |
| 定格容量 | 5 kVA – 500 kVA |
| 周波数 | 50/60 Hz |
| Motor starting | Direct-on-line / star-delta compatible |
| 標準 | 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.
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
工場直送
当社の標準プラットフォームに基づいて構築されたカスタムブランディング、パッケージング、製品バリアント – 名札から完全な製品設計まで。.
カスタム名札 · カスタムパッケージ · 完全な試験書類
卸売供給
ボリューム価格
柔軟なコンテナ数量、コンテナごとの混合モデル、ボリュームバイヤーおよび輸入業者向けの信頼できるグローバル配送を伴う工場価格。.
コンテナMOQ · 混合モデル · グローバル配送
ディストリビューターサポート
チャンネルパートナー
ディストリビューターおよびプロジェクトクライアント向けの専任アカウント管理、技術文書、優先生産。.
アカウントマネージャー · 販売資料 · 優先リードタイム
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.
認証 & 品質保証
Our phase conversion transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and factory testing on every unit.
製品認証
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.
単相電源で三相モーターを動かすことはできますか?
モーターに対してトランスをどのようにサイズ設定すればよいですか?
静的コンバータとこのタイプのトランスの違いは何ですか?
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.




















