Three Phase Oil Immersed Transformer Manufacturers – Utility Grade Supply
Subian Electric manufactures three phase oil immersed transformers from 30 kVA to 63000 kVA at our 50,000-square-metre factory in Xuzhou, Jiangsu, China. Our 350+ employees have supplied utilities and industry in 50+ countries since 2019.
As a factory-direct manufacturer and supplier, we provide three-phase oil-immersed units with factory pricing, custom configurations and complete test documentation.
Send your voltage, capacity and standard. Our export team will respond with a quotation and technical proposal.
2019年以降 · 50,000m² · 350人以上のスタッフ
Three Phase Oil Immersed Transformers We Manufacture
Three phase oil immersed transformers from 30 kVA to 63000 kVA, 6 kV to 132 kV class, for grid, industrial and commercial distribution with routine testing on every unit.
What Is a Three Phase Oil Immersed Transformer?
A three phase oil immersed transformer converts three-phase voltage levels using oil-cooled windings, delivering economical and reliable power for distribution networks and industrial loads.
Three-phase units are the standard building block of power distribution – feeding substations, industrial plants, commercial complexes and public infrastructure with proven oil-immersed reliability.
- Three-phase design – standard vector groups Yyn0 / Dyn11 / YNd11.
- 6-132 kV class – voltage classes for distribution and sub-transmission.
- 50,000m²工場 – in-house winding, vacuum drying, oil filling and testing.
- 350人以上の従業員 – engineering, production and export teams.
- Type test evidence – reports to 110 kV class for project approval.
- OEM / ODM & 卸売 – カスタムブランディング、パッケージング、ボリューム供給。.
Main Types of Three Phase Oil Immersed Transformers
We manufacture three three-phase configurations:
Distribution type
30 kVA – 2500 kVA for pole, pad and substation distribution.
Power type
Up to 63000 kVA for regional distribution substations.
Pad-mounted type
Enclosed ground-level units for urban and commercial sites.
Three Phase Oil Immersed Transformer Specifications
| パラメータ | 仕様 |
|---|---|
| 定格電圧 | 6 kV – 132 kV class |
| 定格容量 | 30 kVA – 63000 kVA |
| 周波数 | 50/60 Hz |
| 冷却 | ONAN / ONAF |
| ベクトルグループ | Yyn0 / Dyn11 / YNd11 |
| 標準 | IEC 60076 / GB 1094 |
Three Phase Oil Immersed Manufacturing at Our 50,000 m² Factory
From material preparation to winding, vacuum drying, oil filling, assembly and testing – every three-phase unit is built and tested at our Xuzhou facility.
OEM/ODM & Wholesale Three Phase Oil Immersed Transformer Supply
Distributors and utilities can brand or resell three-phase units with custom nameplates, packaging and documentation.
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
Three Phase vs Single Phase Oil Immersed Transformers
Three-phase units supply balanced power to three-phase networks and industrial loads at lower cost per kVA than equivalent single-phase banks. Single-phase units serve rural and single-phase networks.
We manufacture both and recommend the configuration that matches your network and load.
Choosing a Three Phase Oil Immersed Transformer Manufacturer
Verify vacuum drying capability, type test evidence and utility reference deliveries. These factors determine transformer reliability and life.
Subian Electricは、50,000m²の工場、350人以上の従業員、ISO9001、CEおよびUL認証を提供し、50か国以上に輸出しています。.
Request a quotation with your voltage and capacity – we confirm the design before production.
認証 & 品質保証
Our three-phase oil-immersed transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports.
製品認証
Three Phase Oil Immersed Transformer FAQ
Common questions about three phase oil immersed transformers and factory sourcing.
三相油浸変圧器とは何ですか？
What vector groups are available?
What capacities do you manufacture?
Can you build to a specific standard?
Why choose a three-phase transformer instead of three single-phase units?
What are your delivery terms?
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.