Transformer Manufacturer, Factory, Supplier & Wholesaler – Power, Isolation & Marine Transformers, VFD & Stabilizers

⭐ WHO WE ARE

Global Leader in Industrial, Utility & Renewable Energy Transformer Solutions

PowerNex is a global-leading manufacturer, supplier, wholesaler, and factory specializing in high-performance electrical transformers and power-quality solutions. Based in China, we provide advanced Dry Type, Oil-Filled, Isolation, and Distribution Transformers engineered for capacities up to 5000 kVA and voltage classes strictly within low and medium voltage levels up to 35 kV, including 415V, 690V, 3.3kV, 6kV, 10kV, 11kV, 20kV, 33kV, and 35kV. Our product portfolio also includes industrial-grade Voltage Stabilizers, Automatic Voltage Regulators (AVR), and VFD-compatible transformer solutions for precise and stable power delivery.

PowerNex products are widely used across industrial plants, utilities, renewable energy systems, infrastructure projects, commercial buildings, and data-center power distribution networks. With strong engineering expertise and rigorous quality control, we ensure safe, reliable, and durable power solutions trusted in global markets—including the United States, Canada, Australia, Germany, France, the United Kingdom, Brazil, and Argentina.

All PowerNex transformers comply with international standards such as IEC, IEEE, ANSI, CE, UL, CSA, and GOST. Whether for step-up, step-down, or custom-engineered 35 kV transformer solutions, we deliver efficient, certified, and dependable power systems tailored to a wide range of global applications.

⭐ WHAT WE DO

Custom-Engineered Transformer Solutions for Industrial, Utility & Renewable Applications

PowerNex provides fully customized transformer and power-quality solutions designed to meet the highest international standards for performance, safety, and efficiency. Our engineering team collaborates with clients from initial design through manufacturing and commissioning to deliver solutions optimized for 35 kV and below voltage systems, ensuring compatibility with regional grids and demanding industrial conditions.

We support applications across power generation, distribution networks, industrial manufacturing, and renewable-energy systems, including solar plants, wind power infrastructure, BESS battery storage, and high-load facilities such as mining sites, VFD-driven equipment, and modern data centers. Our transformers are engineered to operate reliably under fluctuating loads, harmonic-rich environments, and continuous industrial duty cycles.

PowerNex solutions are tailored to site conditions—from air-cooled and oil-cooled configurations to specialized insulation systems, noise-reduction design, and harmonic-mitigation compatibility. Supported by advanced manufacturing, routine testing, type testing, and strict quality validation, PowerNex ensures stable, long-life performance for global industrial and utility sectors operating within the ≤35 kV voltage class.

What We Manufacture: Advanced Voltage Regulators & Transformer Systems

Oil-filled medium voltage distribution transformer (oil immersed MV transformer) 6–35kV 50kVA–5000kVA for industrial and utility power distribution, China leading manufacturer and supplier with global sales including USA, Canada, Brazil, Germany, Saudi Arabia – PowerNex

Distribution Transformers

UL certified pad mounted transformer 50–9000kVA (pad-mount distribution transformer, ground-mounted transformer) for utility and industrial power distribution, China leading manufacturer and wholesale supplier with global sales including USA, Canada, Brazil, Germany, Saudi Arabia – PowerNex

Pad Mounted Transformers

Overhead pole-mounted distribution transformer 10–500kVA (utility-grade pole transformer) for North American power distribution, China leading manufacturer and wholesale supplier with global sales including USA, Canada, Brazil, Australia, Germany, Saudi Arabia – PowerNex

Pole Mount transformers

Three-phase dry-type distribution transformer (cast resin dry transformer, air-cooled transformer) 50kVA–5000kVA for commercial and industrial power systems, China leading manufacturer and wholesale supplier with global sales including USA, Canada, Brazil, Germany, Saudi Arabia – PowerNex

Dry Type Transformers

Dry Type Isolation Transformer 1kVA–2500kVA single-phase and three-phase industrial grade electrical isolation solution, China leading manufacturer and supplier with global sales including USA, Canada, Brazil, Australia, Germany, Saudi Arabia – PowerNex

Isolation Transformers

High voltage power transformer 6–35kV up to 10,000 MVA (HV electrical power transformer, transmission and distribution transformer) for utility and industrial power systems, China leading manufacturer and supplier with global sales including USA, Canada, Brazil, Germany, Saudi Arabia – PowerNex

Electrical Power Transformers

Automatic Voltage Stabilizer 1kVA–3000kVA single-phase and three-phase industrial-grade voltage regulation system, China leading manufacturer and supplier with global sales including USA, Canada, Brazil, Australia, Germany, Saudi Arabia – PowerNex

Automatic Voltage Regulator (AVR)

Variable frequency drive VFD 0.75kW–500kW (AC drive, frequency inverter, motor inverter) for single-phase and three-phase industrial motor speed control, China leading manufacturer and wholesale supplier with global sales including USA, Canada, Brazil, Germany, Saudi Arabia – PowerNex

Variable Frequency Drives (VFDs)

Automatic Voltage Regulator (AVR) 1kVA–2500kVA single-phase and three-phase industrial voltage control system for global power applications, China leading manufacturer and supplier, worldwide sales including USA, Canada, Brazil, Australia, Germany, Saudi Arabia – PowerNex

Variable Voltage Regulator

WHY CHOOSE US

More Than Power Equipment — Engineering You Can Rely On

At PowerNex, we deliver more than electrical equipment — we engineer complete power distribution, voltage regulation, and motor control solutions built for demanding industrial and utility environments. As a professional manufacturer, our product portfolio includes medium and high voltage power transformers from 6kV to 35kV with capacities up to 10,000 KVA, oil-filled and dry-type distribution transformers from 50 kVA to 9000 kVA, as well as dry-type isolation transformers ranging from 1 kVA to 2500 kVA.

Beyond transformers, we provide a full range of automatic voltage stabilizers and automatic voltage regulators (AVR) from 1 kVA to 3000 kVA, along with variable frequency drives (VFDs) from 0.75 kW to 500 kW, supporting both single-phase and three-phase systems. This integrated product lineup allows us to support complete power systems — from voltage transformation and stabilization to precise motor speed control.

Every project begins with a technical conversation. We work closely with our customers to understand load conditions, site environments, grid quality, and operational objectives. Whether for utility power distribution, industrial plants, infrastructure projects, or commercial facilities, each solution is engineered to meet specific application requirements while optimizing performance, efficiency, and lifecycle cost.

With strong in-house manufacturing capabilities, strict quality control, and extensive global project experience, PowerNex supplies reliable power solutions to customers across North America, South America, Europe, the Middle East, and Asia-Pacific. Our commitment is simple: engineered reliability, consistent quality, and long-term value — enabling our customers to power their operations with confidence.

Request a Custom Solution

Custom Power Solutions

At PowerNex, customization is built into everything we do. We engineer tailored power and motor control solutions to match your exact voltage levels, capacity requirements, application conditions, and international standards. From 6kV–35kV power transformers up to 10,000 KVA to voltage stabilizers, AVRs, and VFDs, every solution is designed for reliable, efficient, and long-term operation.

Our Customization Process

Consult
We evaluate your load profile, voltage range, operating environment, and project objectives to ensure the voltage regulation solution matches real-world application demands.

设计
Our engineers develop a tailored solution, defining electrical ratings, regulation range, insulation system, cooling method, enclosure type, and protection features for reliable operation.

Manufacture
All products are manufactured in-house under strict quality control, fully compliant with IEC, IEEE, ANSI, and UL standards to ensure consistent performance and durability.

Test
Each unit undergoes comprehensive factory testing, including electrical performance, insulation, and functional verification, ensuring safety, accuracy, and long-term reliability.

Request a Custom Solution

Applications

Power and motor control solutions worldwide.

Utilities & Power Grid: Medium- and high-voltage transformers and voltage regulation systems for reliable transmission and distribution networks.

Industrial Manufacturing: Power transformers, voltage control equipment, and VFD solutions designed to improve efficiency and reduce downtime in factories.

Oil & Gas & Mining: Heavy-duty power transformation and motor control systems engineered for harsh and demanding operating environments.

Renewable Energy: Grid-connected transformers, voltage stabilization, and frequency control solutions for solar and wind power projects.

Data Centers: Low-loss transformers and isolation solutions delivering clean, stable, and uninterrupted power for critical equipment.

Commercial & Infrastructure: Flexible power distribution and regulation systems for airports, hospitals, transit systems, and large buildings.

Water Treatment: Energy-efficient transformers and VFD solutions enabling precise pump control in water and wastewater facilities.

Ports & Offshore: Corrosion-resistant power and motor control systems designed for coastal, port, and offshore industrial applications.

Heavy Machinery: Customized transformers, voltage regulators, and frequency drives supporting large motors and high-load industrial equipment.

Power Solutions & Global Support

Empowering Your Projects Worldwide
At PowerNex, we go beyond manufacturing. We provide comprehensive electrical solutions that help industries operate safely, efficiently, and reliably. From industrial plants to renewable energy systems and critical infrastructure, our team ensures your power systems are optimized for performance, safety, and longevity.

How We Support Your Success

1. Expert Consultation
Our experienced technical team works closely with you to gain a deep understanding of your power requirements, load characteristics, operating environment, and system objectives. Through professional analysis and clear communication, we provide practical recommendations that help you select the most effective and reliable solution for your application.

2. Tailored Solution Planning
Based on your project needs, we design customized solutions for power distribution, motor control, and voltage regulation. Each system is engineered with the correct electrical ratings, protection features, and configuration options, ensuring full compliance with international standards and optimal performance under real operating conditions.

3. Implementation & Quality Assurance
All equipment is manufactured in our own factory using controlled production processes and strict quality management procedures. From component selection to final assembly, every stage is carefully monitored to ensure consistent performance, operational safety, and long-term reliability across industrial, utility, and commercial applications.

4. Continuous Support & Optimization
Our support continues beyond delivery. We provide technical assistance, troubleshooting guidance, and system optimization advice to help maintain stable operation, improve efficiency, and support future expansion. With global service capabilities, we ensure dependable performance throughout the entire lifecycle of your system.

Request a Custom Solution

Wholesale supplier of voltage stabilizers in China, 1kVA–3000kVA, single phase & three phase voltage regulators factory and supplier for USA, Canada, Brazil, Argentina, Australia and global markets – PowerNex

Voltage & Transformer Factory

PowerPex is a leading electrical power equipment manufacturer and factory in China, specializing in the production of transformers, variable frequency drives (VFDs), and voltage regulators. With a complete in-house production line—including core and coil processing, PCB assembly, insulation treatment, testing, and final assembly—we ensure high-quality products and timely delivery.

As a trusted industrial power equipment supplier,PowerPex provides customized solutions that meet international standards such as CE, UL, CSA, and ISO. Our products are widely used in utilities, industrial manufacturing, renewable energy systems, data centers, and infrastructure projects. We export to over 50 countries worldwide, providing reliable and durable solutions for global clients.

Distribution transformer manufacturer in China, 10kVA–5000kVA, 6kV–35kV oil-immersed and dry type distribution transformers factory and supplier for USA, Canada and global markets – PowerNex

Dry type transformer manufacturer in China, 10kVA–4000kVA, 0.4kV–35kV cast resin and VPI dry type transformers factory and supplier for USA, Canada and global markets – PowerNex

Pole mounted transformer manufacturer in China, 5kVA–500kVA, 11kV 13.8kV 33kV overhead pole type distribution transformers factory and supplier for USA, Canada and global markets – PowerNex

Electrical power transformer manufacturer in China, 10kVA–100MVA, 6kV–110kV power and distribution transformers factory and supplier for United States, Canada and global markets – PowerNex

Electrical isolation transformer manufacturer in China, 1kVA–3000kVA single phase and three phase isolation transformers factory and supplier for USA, Canada, Brazil, Australia and global markets – PowerNex

Industrial Variable Frequency Drive VFD manufacturer in China, 0.75kW–1000kW, 220V–690V motor drive factory and supplier for USA, Canada, Brazil, Australia, UAE and global markets – PowerNexIndustrial Variable Frequency Drive VFD manufacturer in China, 0.75kW–1000kW, 220V–690V motor drive factory and supplier for USA, Canada, Brazil, Australia, UAE and global markets – PowerNex

Custom electrical equipment factory and manufacturer in China producing power transformers, variable frequency drives and voltage regulators for United States, Canada and global markets – PowerNex

Pad mounted transformer manufacturer in China, 75kVA–5000kVA, 11kV–35kV underground distribution pad-mount transformers factory and supplier for United States, Canada and global markets – PowerNex

Voltage stabilizer and regulator manufacturer in China, 1kVA–3000kVA automatic and servo voltage stabilizers factory and supplier for United States, Canada and global markets – PowerNexVoltage stabilizer and regulator manufacturer in China, 1kVA–3000kVA automatic and servo voltage stabilizers factory and supplier for United States, Canada and global markets – PowerNex

Frequently Asked Questions (FAQ)

What products does PowerNex manufacture?

PowerNex specializes in manufacturing a wide range of electrical power equipment, including power transformers, distribution transformers, pad-mounted transformers, pole-mounted transformers, dry type transformers, isolation transformers, voltage stabilizers, automatic voltage regulators (AVRs), and variable frequency drives (VFDs). We provide both standard and customized solutions for industrial, commercial, utility, and infrastructure applications.

Can you provide customized transformers or electrical equipment?

Yes. PowerNex offers fully customized solutions based on your requirements, including capacity, voltage, phase type, enclosure type, and special applications. Our in-house design and production teams can develop tailored solutions that comply with international standards such as CE, UL, CSA, and ISO.

Which countries does PowerNex export to?

We provide global sales and export our products to more than 70 countries, including the United States, Canada, Brazil, Argentina, Australia, Indonesia, Malaysia, Philippines, UAE, Saudi Arabia, Germany, France, and many other regions worldwide.

What are the standard lead times for orders?

Lead times vary depending on the product and customization level. Typically, standard products can be shipped within 4–6 weeks, while customized solutions may require 6–12 weeks. We always aim to provide timely delivery and can offer expedited production if needed.

Are your products certified?

Yes. PowerNex products comply with major international certifications such as CE, UL, CSA, ISO, and GOST. We ensure that every product meets safety, performance, and quality standards required in global markets.

Do you offer wholesale or OEM services?

Absolutely. PowerNex provides wholesale, OEM, and private-label services. We can manufacture products under your brand or provide bulk solutions for distributors, EPC contractors, and industrial clients.

What is your after-sales support policy?

PowerNex offers full after-sales support, including technical consultation, installation guidance, maintenance instructions, and warranty services. Our technical team is available to provide remote support or on-site assistance where necessary.

How can I place an order?

You can contact our sales team directly via email or website inquiry form. Provide the product type, specifications, quantity, and delivery location. We will offer a quotation, production schedule, and shipping details promptly.