750 kVA Three Phase Oil Filled Distribution Transformer, Medium Voltage 13.8 kV / 13.2 kV / 12.47 kV Primary to 480Y/277 V or 208Y/120 V Secondary

Key Features & Benefits

• High Efficiency & Energy Savings: Optimized core and windings reduce no-load and load losses, improving operational efficiency.

• Robust Oil-Immersed Design: Provides excellent thermal stability, overload tolerance, and extended service life.

• Reliable Voltage Conversion: Stable 480Y/277 V or 208Y/120 V output from medium voltage feeders.

• ANSI & IEC Compliance: Suitable for North American and international utility, commercial, and industrial applications.

• Durable Construction: Corrosion-resistant steel tank, high-quality insulation, and rugged bushings for outdoor installation.

• Low Maintenance: Reduced maintenance requirements ensure long-term operational reliability.

• Versatile Applications: Utility, commercial, industrial, renewable energy, and residential distribution networks.

Transformer Drawings & Engineering Documentation

PowerNex offers comprehensive technical drawings and schematics for all 750 kVA oil-filled distribution transformers:

• Dimensional drawings for site planning and installation

• Electrical wiring and connection schematics

• 3D CAD models for engineering integration

• Custom layouts for OEM, EPC, or utility projects

Technical drawings are available in PDF, CAD, and DXF formats, ensuring seamless integration into engineering and procurement processes.

Components & Construction

• Premium Core: Low-loss, grain-oriented silicon steel for high efficiency.

• Copper or Aluminum Windings: Optimized for thermal and electrical performance.

• Oil Tank & Conservator: High-quality steel tank with insulating oil for cooling and dielectric protection.

• Bushings & Insulators: ANSI / IEC compliant for primary and secondary connections.

• Cooling System: Natural oil circulation with air cooling (ONAN), optional radiators for high-load environments.

• Protection Devices: Pressure relief, conservator, and optional thermal sensors for temperature monitoring.

Detailed Project Case Study – South American Industrial Upgrade

Location: Brazil
Application: Industrial medium-to-low voltage distribution upgrade
Transformer Supplied: 750 kVA Three Phase Oil-Filled Distribution Transformer, 13.2 kV to 480Y/277 V

Challenge: The plant required a reliable, ANSI/IEC compliant transformer to feed critical production equipment and control systems with minimal maintenance and high thermal efficiency.

Solution: PowerNex supplied a 750 kVA oil-immersed transformer, complete with technical drawings, installation support, and compliance with ANSI/IEC standards.

Outcome:

• Stable low voltage supply to critical machinery

• Long-term reliability with minimal maintenance

• Seamless integration into the plant’s existing distribution system

• Compliance with international safety and quality standards

Leading Manufacturer & Advanced Production Facility

PowerNex is a leading transformer manufacturer in China, combining decades of industry experience with state-of-the-art production facilities and a strong commitment to research and development. Our factory is equipped with precision winding machines, automated core assembly lines, modern oil filling and insulation equipment, and advanced testing laboratories, ensuring every oil-filled transformer meets the highest ANSI, IEC, UL, and CE standards.

Our experienced R&D and engineering team continually develops innovative transformer designs, optimizing for energy efficiency, thermal performance, noise reduction, and long-term reliability. From prototype design to full-scale production, every unit undergoes strict quality control and performance verification, guaranteeing consistent, high-quality transformers for industrial, commercial, and utility applications worldwide.

With a workforce of skilled engineers, technical operators, and quality assurance specialists, PowerNex has successfully delivered customized transformer solutions for global projects across North and South America, Europe, the Middle East, and Southeast Asia. Our combination of technical expertise, cutting-edge manufacturing, and global project experience ensures that clients receive reliable, high-performance transformers tailored to their specific requirements.

Applications

Utility Distribution: Ideal for substations, urban and rural networks, and public utility grids, providing stable voltage conversion and reliable power supply for municipal and industrial feeders.

Industrial Plants: Suitable for manufacturing facilities, heavy industry, and processing plants, supporting critical machinery, control panels, and automation systems with high reliability and thermal performance.

Commercial Complexes: Designed for office buildings, malls, hospitals, and data centers, ensuring safe, stable low-voltage supply for lighting, HVAC, elevators, and IT equipment.

Infrastructure & Renewable Energy: Perfect for airports, railway stations, solar and wind farms, providing efficient medium-to-low voltage conversion and grid stability.

Residential & Rural Communities: Suitable for suburban and rural electrification, farms, and small commercial loads, delivering continuous and reliable power in areas with fluctuating demand.