Current transformer manufacturer

WEISHO, as a leading manufacturer of current transformers in the market, not only creates high-quality products with strict processes, but also provides the most competitive prices with its complete supply chain advantages. At the same time, we support OEM manufacturing and personalized customization services to help customers enhance their brand competitiveness and market value.

What are our characteristics

Production technology

Adopting industry-leading manufacturing processes for current transformers, continuously optimizing production processes, and improving efficiency and accuracy. We strictly control insulation performance, ratio error and phase angle error to ensure product stability and reliability.

Customization and OEM/ODM

Supports OEM/ODM services and can provide customized solutions according to your needs, including rated current, accuracy class, insulation level, installation structure, and brand identification, etc.

High performance-price ratio

Efficient production and strong supply chain management ensure high-quality current transformers at low prices, reducing customer procurement costs while meeting IEC, GB and other international and domestic standards.

Long term partnership

Putting customers at the center, establishing long-term stable cooperation, and assisting in the growth of customer business. We provide full-life cycle technical support for current transformers, including installation guidance, maintenance and performance testing.

Current Transformer Product Range

Our current transformer product line emphasizes accuracy and reliability, strictly complies with IEEE, ANSI, IEC, and other international standards, features a compact and robust design, and offers excellent performance in harsh environments. The product covers multiple types and specifications, including metering, protection, and measuring current transformers, suitable for power generation, transmission, distribution, and industrial applications. High-quality magnetic materials and advanced manufacturing technology ensure minimal ratio error and phase angle error, providing users with a stable, accurate, and secure electrical measurement and protection solution.

Why choose Weisho Electric as your American switch and socket manufacturer

Advanced manufacturing capabilities: Our state-of-the-art factory produces over 100,000 current transformers annually, utilizing precision winding, vacuum casting, and automated testing processes to ensure consistent quality and compliance with IEEE, ANSI, IEC, and GB standards.
Quality assurance for current transformers: Each current transformer undergoes rigorous testing, including ratio error and phase angle error calibration, insulation withstand voltage testing, temperature rise testing, and thermal stability testing, to ensure a service life of over 15 years in harsh power system applications.
Affordable current transformer solutions: As a direct manufacturer, we eliminate intermediary costs while maintaining excellent quality. Compared to European suppliers, our current transformers can save 30-40% in price without affecting compliance with international standards and manufacturing quality.

Advanced design of Current Transformer

Variety of Styles

Choose from a wide range of current transformers to match your power system configuration and application requirements.

Safety Features

All our current transformers comply with international safety standards (IEEE, IEC, GB), ensuring stable and reliable operation in power systems of all scales.

Overvoltage protection design：Resists transient overvoltage impacts to avoid insulation breakdown
High-temperature resistant insulation materials：Prevents thermal aging and ensures long-term operational safety
Short-circuit withstand capability：Maintains performance stability under fault current conditions to protect the power grid

Easy Installation

Our current transformers are designed for streamlined installation, reducing on-site workload and ensuring rapid integration into your power system

Energy Efficiency

Our current transformers are engineered to minimize energy loss and optimize power measurement accuracy, supporting efficient energy management for your power system.

Get Your Customized Quotation!

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

More Than Just a Current Transformer Manufacturer

We not only produce high-quality current transformers that comply with IEEE, ANSI, IEC, and GB standards, but also provide diverse customization and value-added services to meet your personalized needs in power generation, transmission, distribution, and industrial projects. We focus on quality and technological innovation, strictly controlling core materials and manufacturing processes to ensure that our products are both highly reliable and long-lasting.

Service Consultation

Whether your requirements are for metering, protection, or specialized industrial applications, our team can provide professional advice and technical consultation. For high-difficulty power system projects, we provide in-depth engineering support to ensure that you choose the best current transformers and application solutions..

Product Recommendations

Not sure which current transformer is suitable for your power system? Our experts will provide free customized advice based on your specific operational and environmental requirements, ensuring that you receive the product that best meets your measurement, protection, and insulation needs.

Logistics Support

If you lack a reliable freight forwarder, we can arrange transportation from the factory to your project site at no additional cost. Our logistics team ensures timely and safe delivery of current transformers, ensuring that your power project proceeds as planned and minimizing downtime and delays.

Installation Support

Do you need installation assistance for current transformers? Our technical team is always ready to answer your questions and provide practical support. For large-scale power projects, we can even dispatch engineers to your site to provide on-site guidance for installation, calibration, and commissioning.

What are our clients saying

Check out the experiences of our satisfied customers who chose our current transformers.

“The 0.2S class current transformers have drastically improved our energy metering accuracy. Their stable performance has eliminated billing discrepancies for our commercial clients.”

John Doe

Power Utility Engineer

“These current transformers fit seamlessly into our industrial power systems. The compact design and high insulation level make them ideal for our harsh factory environments.”

Tom Johnson

Plant Maintenance Manager

“I was able to complete the on-site calibration myself. The technical manual was clear, and the pre-tested performance saved us hours of debugging.”

James Brown

Electrical Contractor

“I trust these current transformers for all my power distribution projects. They are reliable, easy to install, and consistently meet IEEE standards.”

Maria Smith

Project 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

Get the answers to your questions about current transformers right here.

What types of current transformers are available?

We offer metering-grade (Class 0.2/0.2S), protection-grade (Class 5P/10P), and measuring-grade (Class 0.5/1.0) current transformers, covering busbar-type, wound-type, and split-core designs for indoor/outdoor applications.

Are current transformers safe to use?

Yes. Our current transformers comply with IEEE, IEC, and GB standards, featuring high-voltage insulation, overcurrent withstand capability, and flame-retardant materials to ensure safe operation in power systems.

How do I install a current transformer?

Installation steps include: verifying the rated current/voltage matches your system, mounting the transformer on busbars or cables, connecting secondary wiring to meters/relays, and performing insulation resistance testing. We provide detailed manuals and on-site support for large projects.

What is the average lifespan of current transformers?

With proper installation and maintenance, our current transformers have a typical lifespan of 15–20 years, with core materials and insulation designed to resist thermal aging and environmental stress.

Can I use current transformers in older power systems?

Yes. Our products are compatible with legacy systems. We can provide customized solutions to match your existing busbar layouts and voltage levels, ensuring seamless integration.

Do current transformers come with a warranty?

We offer a 3-year warranty on all current transformers, covering manufacturing defects and performance issues. Extended warranty options are available for industrial applications.

What are the key performance parameters of current transformers?

Core parameters include ratio error, phase angle error, insulation level, short-circuit withstand capacity, and accuracy class (e.g., 0.2S for high-precision metering).

How do I choose the right current transformer?

Selection depends on your application:

For energy metering: Choose Class 0.2/0.2S for high accuracy
For fault protection: Select Class 5P/10P to handle transient currents
Also consider installation type (busbar/cable), rated voltage, and environmental conditions (temperature, humidity)

Are customizable current transformers available?

Yes. We offer customization for rated current, accuracy class, insulation level, mounting structure, and branding to meet your specific project requirements.

Where can I buy current transformers?

You can purchase directly from our factory, via our global distributors, or through our official website. We also provide support for OEM/ODM partnerships.