Potential Transformer manufacturer

WEISHO is a leading potential transformer manufacturer in the EU, specializing in the production of high-voltage electrical instrument transformers that fully comply with EU IEC standards. Our product range covers epoxy resin cast, fully enclosed metal shell, and compact modular designs, integrating safety, precision measurement performance and long-term operational reliability. These PT products are widely applied in power transmission, distribution, commercial power stations and industrial power systems across the globe.

What are our advantages

Production Technology

Adopting industry-leading epoxy casting & precision winding manufacturing processes, we continuously optimize production workflows to boost product precision, stability and production efficiency for potential transformers.

Customization and OEM/ODM

Supports full OEM/ODM customization services. We can design tailor-made potential transformer solutions to meet your specific demands, including custom voltage ratio, rated burden, accuracy class, logo & brand marking, installation dimensions and technical parameters.

High performance-price ratio

Efficient automated production lines and mature supply chain management guarantee stable high-quality PT products at competitive prices, effectively lowering your overall procurement cost.

Long term partnership

We take customer demand as the core, build long-term stable cooperative relations with global power distributors, contractors and power grid operators, and provide full-cycle technical support to assist your business growth.

EU Standard Potential Transformer Product Range

Our EU standard potential transformers focus on accuracy and safety, fully compliant with IEC 61869 & IEC 60044-2 standards.

Compact in structure, they cover various voltage ratios and accuracy grades for substations and industrial power systems.

High-grade epoxy resin and precise casting ensure stable long-term performance for voltage measurement and protection.

Why choose WEISHO as your Potential Transformer manufacturer

Advanced Design of IEC Standard Potential Transformer

High Durability

Our epoxy cast potential transformers are engineered for long-term stable grid operation without performance degradation. High-strength epoxy insulation delivers outstanding service life and reliable metering performance complying with IEC standards.

Sleek Design

Our IEC standard potential transformers feature streamlined compact epoxy-cast structures, which fit neatly inside standard switchgear cabinets for all power distribution projects.

Variety of Options

We supply a full range of IEC standard potential transformers to meet diverse power system demands, covering standard epoxy cast models and customized special measurement & protection PT solutions.

User Safety

Safety performance is the core of our IEC standard potential transformers. Our fully epoxy insulated PTs eliminate high-voltage leakage risks and prevent insulation breakdown, delivering secure operation for power distribution systems.

Get Your Customized Quotation!

We provide customized solutions. Tell us your needs for a precise quote.

More Than Just a Potential Transformer Manufacturer

We not only produce high-quality potential transformers fully compliant with IEC 61869 & IEC 60044-2 standards, but also provide diversified OEM & customized technical solutions to meet your personalized demands for power grid and industrial power projects. We focus on quality control and technical innovation, strictly controlling raw epoxy materials and casting processes to guarantee safe, precise, and long-term stable operation performance of all our PT products.

Service Consultation

Whether your potential transformer demand is for simple power distribution or large-scale grid tender projects, our technical team can deliver professional technical guidance and full standard compliance consultation. For complex high-voltage projects, we provide in-depth engineering technical support to help you select optimal PT models and complete system matching solutions.

Product Recommendations

Unsure which potential transformer fits your power system? Our senior power engineers offer free customized PT selection advice based on your actual voltage level, accuracy class, installation space and end user IEC tender requirements, to pick products that fully satisfy your metering and protection demands.

Logistics Support

If you have no cooperative freight forwarder in China, we can arrange full transportation from factory to your project site with transparent cost. Our professional logistics team ensures on-time and safe delivery of epoxy cast PTs, avoiding project delays and minimizing your supply chain downtime.

Installation Support

Do you need technical installation guidance for PTs? Our after-sales technical team is on standby to answer all your installation & commissioning questions and provide practical operation guidance. For large grid and industrial projects, we can arrange on-site engineers to offer field technical assistanc

What are our clients saying

Read authentic feedback from our satisfied partners who have adopted our IEC-standard potential transformers. Their testimonials reflect the outstanding precision, long-term operational stability and full IEC compliance our PTs bring to global power distribution and grid projects.

“The IEC standard potential transformers greatly stabilized our substation metering system! They deliver precise measurement and superb long service life.”

John Doe

Grid Operator

“We have a full range of PT specifications to match various power project demands, and our clients are fully satisfied with consistent quality.”

Tom Johnson

Electrical Contractor

“Purchasing WEISHO potential transformers was a wise choice for our industrial power station renovation.”

James Brown

Power Plant Owner

“As a field electrical engineer, I highly recommend these epoxy cast PTs for easy installation and reliable insulation performance.”

Maria Smith

Senior Electrical Engineer

WEISHO employs the most advanced production equipment and precise testing methods at all times, providing a solid guarantee for the company’s product manufacturing and quality inspection.

All products of the entire series have undergone strict environmental and electrical tests.

At the same time, the company has obtained ISO9001 quality management system and ISO14001 environmental management system certifications.

♥Wide selection
♥OEM Quality
♥100% Satisfaction Guarantee

Looking forward to working with you

Your trusted electrical equipment supplier

FAQ

Find answers to common questions about our IEC-standard potential transformers. This section helps you fully understand our PT’s technical parameters, IEC compliance specifications, performance advantages and on-site installation & commissioning procedures.

What is an IEC standard potential transformer?

A potential transformer (PT) is a special instrument transformer for high-voltage power systems. Our IEC standard PTs fully comply with IEC 61869 and IEC 60044-2 standards, including epoxy cast dry-type and oil-immersed models, used for accurate voltage measurement and power system protection.

How do I select the right PT for my power system project?

Please confirm your system rated voltage, required voltage ratio, accuracy class, installation space and indoor/outdoor working environment. Our technical team will recommend the most matching PT model and customized solution for your grid or industrial project.

What core technical parameters should I check for potential transformers?

Key parameters include rated primary voltage, secondary rated voltage, rated burden, accuracy class, insulation level and anti-resonance performance, all of which can be customized to meet tender and grid specifications.

Are epoxy cast PTs easy to install in standard switchgear?

Yes. Our compact epoxy cast PTs adopt unified modular installation dimensions, which fit most standard 10kV/35kV switchgears. We also provide detailed installation drawings and technical guidance for quick assembly.

Can your oil-immersed PTs be used for outdoor substation projects?

Absolutely. Our oil-immersed PTs feature high-strength oil tank and reinforced silicone shed insulation, with excellent rainproof, anti-pollution and anti-aging performance, suitable for outdoor 35kV, 110kV substation applications.

Do you provide customized PT solutions with custom voltage ratios & logos?

Yes, we support full OEM & ODM customization. We can customize voltage ratio, accuracy grade, installation size, laser logo and technical parameters according to your project or brand demands.

What is the warranty period for your IEC compliant potential transformers?

We offer a 12-year standard warranty for all IEC standard PTs. Free spare parts and remote technical troubleshooting are provided within the warranty period.

How to guarantee long-term operation safety of potential transformers?

All our PTs pass strict factory tests including insulation withstand, temperature rise and short-time withstand voltage tests. High-quality epoxy or insulating oil eliminates breakdown risks and ensures stable long-term safe operation.

Are your PTs low-loss and energy-saving for long-term grid operation?

Yes. Our PTs adopt low-loss silicon steel core and precision winding technology, featuring low no-load loss and stable power consumption, effectively reducing long-term grid operation energy cost.

Do you supply professional on-site installation and commissioning technical support?

We provide full-cycle technical services, including remote online guidance for all orders. For large-scale grid and industrial EPC projects, we can arrange professional engineers to your site for on-site installation, testing and commissioning support.