Three Phase Potential Transformer Manufacturers – Balanced Measurement
Subian Electric manufactures three phase potential transformers for balanced voltage measurement in substations and switchgear, at our 50,000-square-metre factory in Xuzhou, Jiangsu, China. Our 350+ employees have served utilities in 50+ countries since 2019.
As a factory-direct manufacturer and supplier, we provide three-phase PTs with accurate ratios, stable accuracy and complete test documentation.
Send your voltage class and accuracy requirements. Our export team will respond with a quotation and technical data.
2019年以降 · 50,000m² · 350人以上のスタッフ
Three Phase Potential Transformers We Manufacture
Three phase potential transformers for substation and switchgear duty, 10 kV to 35 kV class, with factory-tested accuracy and insulation.
What Is a Three Phase Potential Transformer?
A three phase potential transformer measures all three phase voltages with one unit, providing a compact solution for balanced three-phase systems where space is limited.
Three-phase PTs are common in switchgear and compact substations where three single-phase units would be impractical. Correct vector connection is critical and factory-verified.
- Compact three-phase – one unit measures all three phase voltages.
- 10-35 kV class – voltage classes for switchgear and substations.
- Factory-verified vector – connection and ratio tested with the panel.
- 50,000m²工場 – in-house winding, casting and testing.
- 350人以上の従業員 – エンジニアリング、品質、輸出チーム。.
- 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 Potential Transformers
We supply two three-phase PT types:
Metering type
High-accuracy three-phase units for energy measurement.
Protection type
Three-phase units for voltage protection schemes.
Three Phase PT Specifications
| パラメータ | 仕様 |
|---|---|
| 定格電圧 | 10 kV / 35 kVクラス |
| Secondary | 3 × 100/110/120 V |
| 精度クラス | 0.2 / 0.5 / 3P |
| 絶縁 | Cast resin / oil immersed |
| 周波数 | 50/60 Hz |
| 標準 | IEC 61869 |
Three Phase PT Manufacturing at Our 50,000 m² Factory
From winding to casting, vector connection and testing – every three-phase PT is built and tested at our Xuzhou facility.
OEM/ODM & Wholesale Three Phase PT Supply
Panel builders and distributors can brand or resell three-phase PTs with custom nameplates 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 PT vs Three Single-Phase PTs
A three-phase PT saves space and cost in balanced systems; three single-phase PTs give redundancy and flexibility for unbalanced or high-voltage systems.
We supply both arrangements and recommend the right one for your scheme.
Choosing a Three Phase Potential Transformer Manufacturer
Verify vector group test evidence and accuracy class – three-phase units are more sensitive to connection errors than single-phase types.
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。.
Send your voltage class and accuracy requirements – we confirm the design before production.
認証 & 品質保証
Our three-phase potential 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 Potential Transformer FAQ
Common questions about three phase potential transformers and factory sourcing.
三相電圧変圧器とは何ですか？
When should I choose a three-phase PT?
What is the difference from three single-phase PTs?
What accuracy classes are available?
What testing is done?
最小注文数量とは何ですか？
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.