Product Overview

The OSG Series Three-Phase Dry-Type Autotransformer is designed for industrial power distribution, voltage conversion, and stable indoor/outdoor power supply applications. Featuring a NEMA 3R-rated metal enclosure, the transformer provides reliable voltage transformation with high efficiency, low loss, strong overload capability, and long-term operational stability.

Built with premium copper windings and dry-type oil-free construction, the OSG series is an ideal solution for industrial equipment, distribution systems, outdoor stations, and integrated electrical installations.

Key Features & Advantages

NEMA 3R Metal Enclosure for Enhanced Protection

The transformer is housed in a durable metal enclosure compliant with NEMA 3R protection standards, providing:

• Rain protection

• Dust resistance

• Protection against foreign object intrusion

• Excellent corrosion resistance

• Strong mechanical durability

Suitable for both indoor and outdoor installations in demanding industrial environments.

Dry-Type Autotransformer Design

The dry-type oil-free structure offers:

• Environmentally friendly operation

• No oil leakage risk

• Maintenance-free performance

• Safer long-term operation

The autotransformer topology reduces power loss and improves conversion efficiency, making it suitable for continuous industrial loads.

Premium Copper Windings

Manufactured with high-quality copper windings featuring:

• Excellent electrical conductivity

• Low temperature rise

• Strong overload capability

• Superior insulation performance

• Efficient heat dissipation

Ensures stable voltage output and extended service life.

Compact Structure & Easy Installation

The transformer features a compact and space-saving structure with standardized terminals and base design for:

• Convenient installation

• Simplified wiring

• Easy maintenance

• Flexible integration into control cabinets and electrical systems

Ideal for industrial panels, switchgear systems, and equipment integration.

Stable & Reliable Voltage Conversion

Provides accurate and stable voltage transformation for:

• Industrial distribution systems

• Imported machinery

• Production lines

• Outdoor power stations

• Integrated electrical equipment

Designed for reliable long-term continuous operation.

Typical Applications

✅ Industrial factory power distribution systems
✅ Imported machinery voltage conversion
✅ Production line power adaptation
✅ Outdoor substations and power stations
✅ Integrated industrial equipment
✅ Distribution cabinets and control systems
✅ Applications requiring high protection and stability

Product Advantages Summary

✅ NEMA 3R metal enclosure for indoor & outdoor protection
✅ Copper winding design with low loss and high efficiency
✅ Dry-type oil-free construction for safer operation
✅ Excellent insulation and heat dissipation performance
✅ Strong overload capability and stable voltage output
✅ Compact structure for easy installation and maintenance
✅ Reliable three-phase autotransformer design

Technical Features

Contact Us for Custom Autotransformer Solutions

Looking for a reliable three-phase autotransformer for industrial or outdoor applications?

We provide:

• OEM & customized transformer manufacturing

• Flexible voltage and capacity configurations

• Engineering support for industrial projects

• Fast production and worldwide delivery

📩 Contact us today with your voltage and power requirements for a fast quotation and professional recommendation.