High Voltage Voltage Transformer Manufacturers – HV VT Metering Supply
Subian Electric manufactures high voltage voltage transformers – also called potential transformers – for metering and protection up to 35 kV class, 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 HV VTs 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
High Voltage Voltage Transformers We Manufacture
HV voltage transformers from 10 kV to 35 kV class for substation metering and protection – cast resin and oil immersed versions with routine testing.
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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 High Voltage Voltage Transformer?
A high voltage voltage transformer (VT), also called a potential transformer (PT), steps HV line voltage down to a standard low level for protection relays and meters. Its insulation must handle the full line voltage safely.
HV VTs are essential in substations and switchgear for voltage sensing, synchronising and protection – accuracy and insulation quality decide how well the scheme performs.
- 10-35 kV class – HV VTs for substation and switchgear duty.
- Metering & protection – accuracy classes to suit your scheme.
- Cast resin or oil – construction matched to your environment.
- 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 High Voltage Voltage Transformers
We supply two HV VT types:
Single-phase VT
Standard units for line-to-line and line-to-earth sensing.
Three-phase VT
Combined units for balanced three-phase measurement.
HV Voltage Transformer Specifications
| Parámetro | Specification |
|---|---|
| Voltaje nominal | clase 10 kV / 35 kV |
| Voltaje secundario | 100 V / 110 V / 120 V |
| Clase de precisión | 0.2 – 3P |
| Aislamiento | Cast resin / oil immersed |
| Frecuencia | 50/60 Hz |
| Estándar | IEC 61869 |
HV VT Manufacturing at Our 50,000 m² Factory
From winding to casting, assembly and testing – every HV VT is built and tested at our Xuzhou facility with insulation and ratio verification.
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.
High Voltage Voltage Transformer Factory Price – Request a Quote
OEM/ODM & Wholesale HV VT Supply
Utilities and panel builders can brand or resell HV VTs 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
Voltage Transformer vs Current Transformer
A voltage transformer measures voltage; a current transformer measures current. Both feed protection and metering with proportional signals, and both are part of a complete substation package.
We supply VTs alongside CTs and switchgear for coordinated protection packages.
Choosing a High Voltage Voltage Transformer Manufacturer
Verify accuracy test evidence and insulation quality. VT performance directly affects protection sensitivity and metering accuracy.
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 HV voltage transformers are produced under ISO9001, ISO14001 and ISO45001 management systems, with CE and UL certification and type test reports.
Product Certifications
High Voltage Voltage Transformer FAQ
Answers to the questions buyers ask most about high voltage voltage transformers.
¿Qué es un transformador de alta tensión?
What is the difference between VT and PT?
What accuracy classes are available?
Can VTs be supplied with switchgear?
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.