30 kVA Three Phase Dry-Type Isolation Transformer 480V Primary to 208Y/120V Secondary Industrial Power Distribution

The 30kVA three phase dry-type isolation transformer is a robust and reliable solution for industrial power distribution, designed to step down 480V primary voltage to 208Y/120V secondary voltage while providing full electrical isolation between the input and output. This three phase dry type isolation transformer is widely used in industrial, commercial, and infrastructure power systems where safety, stability, and power quality are critical.

As a low-voltage industrial power transformer, the 30kVA isolation transformer helps protect downstream equipment from voltage disturbances, electrical noise, and grounding issues. The dry-type design eliminates the need for insulating oil, making this dry-type isolation transformer safer, cleaner, and more suitable for indoor installations compared with oil-filled power transformers. It is an ideal choice for modern factories, control panels, automation systems, and mission-critical electrical environments.

30kVA isolation transformer Technical Specifications

Core Structure & Working Principle

The 30kVA three phase isolation transformer operates on electromagnetic induction, using high-quality laminated silicon steel cores to minimize core losses and improve efficiency. The primary winding receives 480V three-phase input power, while the secondary winding delivers stable 208Y/120V low-voltage output, fully isolated from the primary side.

This electrical isolation breaks direct conductive paths between the power source and the load, helping to reduce common-mode noise, suppress voltage spikes, and improve overall system safety. As a step-down isolation transformer, it plays a critical role in protecting sensitive equipment and maintaining consistent voltage levels in industrial electrical systems.

Materials & Construction Quality

The dry-type three phase isolation transformer is manufactured using carefully selected raw materials and industrial-grade components. High-purity copper or aluminum windings provide excellent conductivity, thermal performance, and long service life. The core is constructed from precision-stacked silicon steel laminations to reduce eddy current losses and vibration noise.

The dry-type insulation system is designed for high thermal endurance, ensuring reliable operation under continuous industrial loads. Compared with oil-immersed transformers, the dry-type structure offers enhanced fire safety, minimal maintenance, and improved environmental compatibility. This makes the 30kVA dry-type power transformer suitable for factories, commercial buildings, and indoor power rooms.

Key Performance Advantages

• Reliable three phase power distribution for industrial applications

• Safe electrical isolation between primary and secondary circuits

• Efficient voltage step-down from 480V to 208Y/120V

• Low maintenance dry-type design for indoor installation

• Reduced electrical noise and improved power quality

• Long service life under continuous industrial operation

As an industrial isolation transformer, the 30kVA unit supports stable operation in demanding electrical environments and helps reduce downtime caused by power-related issues.

Typical Applications

The 30kVA three phase dry-type isolation transformer is widely applied across multiple industries and power systems, including:

• Industrial manufacturing plants and factories

• Automation systems and control panels

• CNC machinery and production lines

• Commercial buildings and infrastructure projects

• Data centers and IT power distribution

• HVAC systems and motor control centers

• Renewable energy and auxiliary power systems

Whether used as a low voltage isolation transformer, industrial electrical transformer, or three phase step-down transformer, this product adapts easily to diverse power distribution requirements.

Project Use & Application Scenarios

In industrial projects, the 30kVA dry-type isolation transformer is often installed between the main power supply and sensitive equipment to ensure stable voltage and improved electrical safety. In commercial infrastructure projects, it is used to support lighting systems, control circuits, and auxiliary loads requiring reliable 208Y/120V power.

For export and international projects, the transformer can be customized to meet different standards, frequencies, and installation requirements, making it a flexible solution for global power distribution systems.

Manufacturing, Supply & Global Sales

This 30kVA three phase dry-type isolation transformer is produced by a China-leading manufacturer, supplier, factory, and wholesale exporter with extensive experience in industrial power equipment. The product is supplied globally and sold to markets including the United States, Canada, Brazil, Argentina, Australia, Germany, France, Russia, Saudi Arabia, the United Arab Emirates, Indonesia, Malaysia, the Philippines, and other international regions.

The manufacturing process follows strict quality control procedures from material selection and winding assembly to final inspection and testing. Bulk production capacity supports wholesale supply, project orders, and long-term cooperation with distributors and EPC contractors.

OEM, ODM & Custom Branding Services

To meet diverse project requirements, OEM, ODM, and custom branding services are available. Voltage configurations, insulation class, enclosure design, labeling, and technical specifications can be customized to align with local standards and application needs. This flexibility makes the 30kVA three phase isolation transformer supplier a reliable partner for global industrial power projects.

Dependable Industrial Power Solution

With proven performance, durable construction, and global supply capability, the 30kVA three phase dry-type isolation transformer is a dependable choice for industrial and commercial power distribution. Whether serving as an industrial power transformer, dry-type isolation transformer, or three phase electrical transformer, it delivers safe, efficient, and stable power for modern electrical systems worldwide.

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