50 kVA Pole Mounted Single Phase Distribution Transformer for Utility Power

50 kVA Single Phase Pole Mounted Distribution Transformer

13.2 kV / 12.47 kV Primary | 120/240 V Secondary | Delta Connected | Overhead Utility Power Transformer

The 50 kVA single phase pole mounted distribution transformer is a robust and efficient solution designed for overhead utility power distribution systems. It steps down medium-voltage 13.2 kV or 12.47 kV primary power to standard 120/240 V secondary voltage, providing reliable electricity for residential, commercial, and light industrial loads.

Engineered for long-term outdoor operation, this transformer features delta-connected windings, high mechanical strength, and superior insulation performance, ensuring dependable service in demanding utility environments.

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Manufactured by PowerNex – Factory Direct Utility Transformer Supplier

Manufactured by PowerNex, a China-based professional distribution transformer manufacturer, supplier, factory, and wholesale exporter, this pole mounted transformer is widely supplied to North America and global utility markets, including:

United States, Canada, Mexico, Brazil, Chile, Peru, Australia, Southeast Asia, the Middle East, Africa, and Europe.

PowerNex specializes in utility-grade overhead transformers designed to meet international power standards and long service life requirements.

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Technical Specifications (Standard Model)

Item	Specification
Rated Capacity	50 kVA
Transformer Type	Single Phase Pole Mounted Distribution Transformer
Primary Voltage	13.2 kV / 12.47 kV
Secondary Voltage	120/240 V
Phase	Single Phase
Frequency	50Hz / 60Hz
Connection	Delta Connected
Cooling Method	ONAN (Oil Natural Air Natural)
Insulation Class	Class A / Class B (Optional)
Temperature Rise	55°C / 65°C
Tank Type	Hermetically Sealed / Conservator (Optional)
Mounting	Pole Mounted (Overhead)
Efficiency	High efficiency, low no-load and load losses

⚙️ Major Components & Construction Details

The 50 kVA pole mounted distribution transformer is built with high-quality components designed for long service life, mechanical strength, and stable electrical performance in overhead utility applications.

Main Transformer Components

Magnetic Core

• High-grade cold-rolled grain-oriented silicon steel

• Low core loss and low noise design

• Precision cut and stacked for optimal magnetic performance

Primary & Secondary Windings

• High-conductivity copper or aluminum conductors

• Uniform winding structure for improved short-circuit withstand

• Insulated for medium-voltage and low-voltage duty

Transformer Oil

• High-quality mineral insulating oil (IEC / ASTM compliant)

• Excellent dielectric strength and heat transfer performance

• Vacuum-filled to eliminate moisture and air pockets

Tank & Cover Assembly

• Heavy-duty steel tank designed for pole mounted operation

• Corrosion-resistant surface treatment and coating

• Hermetically sealed or conservator type (optional)

Bushings

• Porcelain or polymer bushings (as specified)

• Designed for outdoor and overhead utility conditions

• High mechanical and dielectric strength

Mounting Hardware

• Pole mounting brackets and accessories

• Designed for standard utility pole installation

• Withstands wind load and mechanical stress

Grounding & Protection Components

• Grounding terminals for safety compliance

• Surge and lightning compatibility

• Optional protective accessories per utility requirement

Each component is carefully selected and assembled to meet utility-grade reliability standards.

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🔧 Component Quality & Reliability Assurance

• Strict incoming material inspection

• Controlled manufacturing and assembly processes

• Routine electrical and mechanical testing

• Final inspection before shipment

This ensures each transformer delivers consistent performance, safety, and long-term reliability in overhead distribution networks.

📐 Transformer Drawing & Technical Documentation

PowerNex provides complete technical drawings and documentation for the 50 kVA single phase pole mounted distribution transformer to support engineering review, utility approval, and project execution.

Available Drawings & Documents

• Outline / Dimension Drawing
  Overall dimensions, mounting details, lifting lugs, and pole mounting configuration

• General Arrangement (GA) Drawing
  Tank layout, bushing positions, grounding points, and accessory locations

• Nameplate & Rating Diagram
  Electrical ratings, voltage combinations, impedance, cooling type, and standards reference

• Internal Structure Drawing (Upon Request)
  Core and winding arrangement, insulation structure, oil flow design

• Connection Diagram
  Primary and secondary terminal identification, delta connection configuration

Engineering Support

• Drawings provided for utility review and approval

• Custom drawings based on local utility specifications

• Revision support during tender, design, and construction stages

• Documentation available in PDF / DWG formats

All drawings are prepared by PowerNex engineering team to ensure accuracy, compliance, and project compatibility.

RELIABLE OVERHEAD POWER FOR UTILITY DISTRIBUTION

Designed for overhead distribution networks, the 50 kVA pole mounted transformer provides safe, stable, and efficient voltage conversion from medium-voltage utility lines to low-voltage consumer supply.

It is ideal for rural electrification, suburban distribution lines, and utility grid expansion projects, delivering consistent 120/240 V power for homes, small businesses, farms, and public facilities.

Oil-immersed construction ensures excellent thermal performance, extended insulation life, and continuous duty operation under varying load conditions.

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Get Your Customized Utility Solution

50 kVA single phase pole mounted distribution transformer, 13.2 kV / 12.47 kV to 120/240 V, delta connected overhead transformer manufactured in China for USA, Canada, Brazil, Australia and global utility markets – factory direct supply by PowerNex

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⚡ Key Features & Benefits

High Reliability for Utility Networks

Designed for continuous outdoor operation with reinforced tank structure, corrosion-resistant coating, and high short-circuit withstand capability.

Stable Medium- to Low-Voltage Conversion

Provides consistent 120/240 V output suitable for residential lighting, appliances, and commercial loads.

Oil-Immersed Thermal Performance

ONAN cooling ensures efficient heat dissipation, reduced hot-spot temperature, and long service life.

Pole Mounted, Space-Saving Design

Optimized for overhead installation, minimizing ground footprint and simplifying utility deployment.

Low Maintenance & Long Service Life

Sealed oil system reduces moisture ingress, oxidation, and maintenance requirements.

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🏭 Typical Applications

• Overhead utility distribution networks

• Residential power supply

• Rural and suburban electrification projects

• Commercial buildings and retail facilities

• Agricultural power distribution

• Infrastructure and public utility projects

This 50 kVA pole mounted distribution transformer is widely used wherever medium-voltage overhead lines must safely supply 120/240 V loads.

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🌍 North America & Global Utility Market Supply

PowerNex supplies pole mounted distribution transformers to utility companies and EPC contractors worldwide, including:

United States, Canada, Mexico, Brazil, Chile, Australia, Indonesia, Philippines, UAE, Saudi Arabia, South Africa, and European markets.

As a factory-direct transformer manufacturer, PowerNex supports:

• Utility tenders and grid projects

• OEM & ODM transformer production

• Bulk and long-term supply contracts

• Regional distributor partnerships

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🛠 Customization & Engineering Support

We offer fully customized single phase pole mounted transformers to meet utility project requirements:

• Custom primary voltages (11 kV, 13.2 kV, 12.47 kV, 22 kV, 33 kV)

• Different kVA ratings (10 kVA – 500 kVA)

• Delta or other connection options

• Special insulation and temperature rise

• Coastal, tropical, or high-altitude designs

Our engineering team ensures compliance with local utility standards and operating conditions.

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📜 Certifications & Standards Compliance

PowerNex pole mounted distribution transformers can be designed and tested to comply with:

• ANSI / IEEE

• IEEE C57

• IEC 60076

• DOE Efficiency Standards

• Utility-specific technical specifications

Certification scope depends on project location and customer requirements.

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📌 Project Case Study – Utility Distribution Upgrade

Project: Overhead Distribution Line Expansion
Location: North America
Application: Residential utility power supply
Product Supplied: 50 kVA Single Phase Pole Mounted Distribution Transformer (13.2 kV / 12.47 kV → 120/240 V)

Challenge:
The utility required a compact, efficient, and long-life transformer suitable for overhead installation with minimal maintenance.

Solution:
PowerNex supplied oil-immersed 50 kVA pole mounted transformers designed to ANSI standards with sealed tanks and delta connection.

Result:

• Stable and reliable residential power supply

• Reduced outage and maintenance frequency

• Successful integration into the utility network

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🔒 Safety, Protection & Performance Design

The PowerNex 50 kVA pole mounted transformer incorporates multiple safety and protection features:

• High dielectric strength insulation system

• Short-circuit and overload withstand capability

• Lightning and surge compatibility

• Hermetically sealed tank to prevent oil contamination

These features ensure safe and reliable operation in outdoor utility environments.

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🌡 Thermal Management & Insulation System

• Optimized core and winding design for low losses

• ONAN cooling for natural heat dissipation

• High-quality transformer oil for insulation stability

• Reduced hot-spot temperature to extend service life

Suitable for continuous duty under varying ambient conditions.

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🌱 Energy Efficiency & Environmental Benefits

Compared with older utility transformer designs, PowerNex transformers offer:

• Lower no-load and load losses

• Reduced energy waste across the grid

• Long service life with minimal oil degradation

• Environmentally responsible materials and processes

Supporting modern utility efficiency and sustainability goals.

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📦 Manufacturing, Testing & Quality Control

All PowerNex utility transformers are produced under strict quality systems:

• Precision core cutting and stacking

• Vacuum oil filling and sealing

• Routine and type testing

• Electrical, insulation, and functional verification

Each unit is inspected and tested before shipment.

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🚚 Packaging, Logistics & Global Delivery

PowerNex provides export-ready logistics solutions:

• Shock-resistant packaging

• Moisture and corrosion protection

• Sea freight and multimodal transport

• Full export documentation support

With extensive experience shipping to North America, South America, Australia, Africa, and global utility markets.

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📈 Long-Term Value for Utilities & EPC Contractors

Choosing PowerNex means:

• Factory-direct pricing

• Consistent quality across projects

• Reliable long-term supply

• Strong engineering and after-sales support

An ideal partner for utility companies, EPC contractors, and power distributors worldwide.

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📞 Contact PowerNex for Datasheets & Quotation

If you are sourcing a 50 kVA single phase pole mounted distribution transformer, or require customized overhead transformers for utility projects, PowerNex is ready to support your needs.

Contact us today for:

• Technical datasheets

• Engineering consultation

• Competitive pricing

• Delivery schedules