Understanding Transformer Voltage Ratings: From 110V Low Voltage to 35kV Medium Voltage Power Systems

Transformer voltage ratings from 110V low voltage to 35kV medium voltage power systems, dry-type and oil-immersed power transformers, capacity range 1kVA to 40000kVA, single-phase and three-phase, IEC ANSI IEEE compliant, manufactured by China transformer factory supplier for wholesale and global sales to USA, Canada, Brazil, Argentina, Mexico, South Africa, Indonesia, and Malaysia, PowerNex

Why Transformer Voltage Ratings Matter in Power System Design

Selecting the correct transformer voltage rating is just as critical as choosing the right capacity (kVA). Voltage mismatch can lead to inefficient operation, overheating, equipment damage, or even system failure—especially in industrial and utility-scale power systems.

Power transformers are designed to step voltage up or down to match load requirements, grid standards, and installation conditions. From low-voltage industrial equipment to medium-voltage utility distribution, understanding voltage ratings ensures safe, stable, and long-term power delivery.

PowerNex manufactures a full range of dry-type and oil-immersed transformers supporting voltage levels from 110V up to 35kV, serving industrial, commercial, and utility applications worldwide.

Common Transformer Voltage Ranges and Applications

Low Voltage Transformers (110V – 690V)

Low-voltage transformers are widely used in:

  • Industrial machinery and production lines

  • Commercial buildings and infrastructure

  • Control systems, lighting, and automation equipment

Typical voltage combinations include:

  • 480V / 208V

  • 400V / 230V

  • 380V / 220V

  • 220V / 110V

PowerNex supplies dry-type transformers and isolation transformers in the 10 kVA to 2500 kVA range, designed for indoor installations where safety, low noise, and minimal maintenance are required.

Low-voltage dry-type and isolation transformer for industrial power distribution, 1kVA–5000kVA capacity, 110V–1000V voltage ratings, single-phase and three-phase design, UL and CE certified transformer manufactured by China factory for wholesale supply and global sales to USA, Canada, Brazil, Argentina, Mexico, South Africa, Indonesia, and Malaysia, PowerNex

Medium Voltage Transformers (3.3kV – 35kV)

Medium-voltage transformers are essential for:

  • Utility distribution networks

  • Substations and grid connection points

  • Renewable energy projects (solar & wind)

  • Large industrial facilities with high power demand

Common medium-voltage ratings include:

  • 3.3kV

  • 6.6kV

  • 10kV

  • 11kV

  • 13.8kV

  • 22kV

  • 33kV

  • Up to 35kV

PowerNex manufactures oil-immersed distribution and power transformers with capacities from 500 kVA to 40,000 kVA, engineered for outdoor operation, long service life, and stable performance under heavy loads.

Low and medium voltage power transformers for utility and industrial applications, capacity from 1kVA to 40000kVA, voltage classes from 110V to 35kV, dry-type and oil-immersed transformers, single-phase and three-phase, IEC ANSI IEEE compliant, manufactured by China transformer factory supplier for wholesale and global sales to USA, Canada, Brazil, Argentina, Mexico, South Africa, Indonesia, and Malaysia, PowerNex

Matching Voltage Ratings with Transformer Capacity (kVA)

Voltage level and transformer capacity must be selected together based on load characteristics.

Examples:

  • Low voltage + small to medium capacity (10–1000 kVA)
    → Ideal for factories, workshops, and commercial facilities

  • Medium voltage + medium capacity (1000–5000 kVA)
    → Suitable for industrial plants, data centers, and renewable energy systems

  • Medium voltage + high capacity (5000–40,000 kVA)
    → Used in substations, utilities, and large infrastructure projects

PowerNex engineering teams assist customers in calculating voltage levels, capacity margins, and load growth to ensure long-term system reliability.

Medium voltage power transformer for utility and infrastructure grid applications, 1MVA–40MVA capacity, 3kV–35kV voltage ratings, oil-immersed and dry-type design, IEC ANSI IEEE compliant, manufactured by China factory supplier for wholesale and global sales to USA, Canada, Brazil, Argentina, Mexico, South Africa, Indonesia, and Malaysia, PowerNex

Dry-Type vs Oil-Immersed Transformers by Voltage Level

Dry-Type Transformers

  • Typically used up to 35kV (application dependent)

  • Indoor installations

  • Fire-resistant, environmentally friendly

  • Common in commercial buildings, data centers, and manufacturing plants

Oil-Immersed Transformers

  • Preferred for medium-voltage and high-capacity systems

  • Excellent heat dissipation

  • Designed for outdoor and utility applications

  • Suitable for harsh environments and continuous operation

PowerNex offers both types with custom voltage configurations to meet IEC, ANSI, and regional grid requirements.

Customized Voltage Solutions for Global Power Systems

Different regions require different voltage standards. As a China-based transformer manufacturer and factory, PowerNex provides OEM, wholesale, and customized transformer solutions for global markets, including:

  • United States & Canada

  • Brazil, Argentina, Mexico

  • South Africa

  • Indonesia & Malaysia

Our transformers support:

  • 110V to 35kV voltage levels

  • Single-phase and three-phase systems

  • 50Hz / 60Hz power networks

Each unit is engineered to match local grid codes, installation environments, and application-specific requirements.

Work with a Professional Transformer Manufacturer

Choosing the right transformer voltage rating requires technical expertise, application knowledge, and manufacturing experience.

PowerNex combines:

  • In-house engineering

  • Factory-controlled production

  • Strict quality inspection

  • Global project support

Whether you need a low-voltage dry-type transformer or a medium-voltage oil-immersed power transformer, we deliver reliable, efficient, and application-specific solutions.

Discuss Your Voltage Requirements with PowerNex

If you are planning a new project, upgrading an existing power system, or sourcing transformers for wholesale or distribution, PowerNex is ready to support you.

Contact our engineering team today to receive professional guidance on transformer voltage selection, capacity sizing, and customized manufacturing solutions for your application.

    PowerNew
    PowerNew

    PowerNex – Industrial Power Equipment Manufacturer PowerNex is a professional manufacturer and solution provider specializing in power transformers, voltage regulation systems, and industrial electrical equipment. With in-house engineering and factory-controlled production, PowerNex designs and manufactures dry type transformers, oil-immersed transformers, isolation transformers, voltage regulators, VFD systems, and customized power distribution solutions for industrial, utility, and infrastructure applications. Serving global markets across North America, Africa, and Southeast Asia, PowerNex supports capacity ranges from 1 kVA to 40,000 kVA and voltage levels from 110V to 35kV, covering both low-voltage and medium-voltage power systems. All equipment is designed for single-phase and three-phase applications, operating at 50Hz and 60Hz, and manufactured in compliance with IEC, ANSI, IEEE, UL, CE, and CSA standards. With a strong focus on customization, quality assurance, and long-term technical support, PowerNex works closely with EPC contractors, system integrators, and end users to deliver reliable, compliant, and application-specific power solutions for projects worldwide.