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.
Since 2019 · 50,000m² · 350+ Staff
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.
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Transformador de tipo seco de 10kV - serie SCBH Aleación Amorfosa
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Transformador de tipo seco de 20-35KV
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Transformador de tipo seco de resina epóxica serie SCB de 20-35KV
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Transformador de distribución sumergido en aceite de 20KV
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Transformador de Potencia Sumergido en Aceite de 35KV
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Transformador de distribución de potencia sumergido en aceite de 6-10KV
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Transformador de Corriente –10KV Interior Alta Tensión
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Transformador de corriente–Transformador de corriente enrollado LMZK 300/5a
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Transformador de corriente–LSY-10 transformador CT integrado
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transformador de corriente–LXK secuencia cero de alta tensión
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transformador de distribución de tipo seco - serie SCB de resina epóxica de 6-10 KV
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Transformadores eléctricos–JDZ – 10 Voltaje de potencia
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 factory – in-house winding, casting and testing.
- 350+ employees – engineering, quality and export teams.
- OEM / ODM & wholesale – custom branding, packaging and volume supply.
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
| Parámetro | Specification |
|---|---|
| Voltaje nominal | clase 10 kV / 35 kV |
| Secondary | 3 × 100/110/120 V |
| Clase de precisión | 0.2 / 0.5 / 3P |
| Aislamiento | Cast resin / oil immersed |
| Frecuencia | 50/60 Hz |
| Estándar | 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.
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.
Three Phase Potential Transformer Factory Price – Request a Quote
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
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
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 offers a 50,000m² factory, 350+ employees, ISO9001, CE and UL certification and export to 50+ countries.
Send your voltage class and accuracy requirements – we confirm the design before production.
Certifications & Quality Assurance
Our three-phase potential transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports.
Product Certifications
Three Phase Potential Transformer FAQ
Common questions about three phase potential transformers and factory sourcing.
¿Qué es un transformador de potencial trifásico?
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?
What is the minimum order quantity?
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.