The 75kVA Conventional Type Single Phase Pole Mounted Transformer is an oil-immersed distribution transformer designed for overhead power distribution systems. It is manufactured according to international standards and can be customized based on utility requirements, voltage levels, environmental conditions, and installation specifications.

General Specifications

Electrical Specifications

High Voltage Specifications

Low Voltage Specifications

Transformer Core Specifications

Core Advantages:

✔ Reduced no-load losses
✔ Improved energy efficiency
✔ Lower operating temperature
✔ Longer service life

Winding Specifications

Tank & Mechanical Structure

Cooling & Insulation System

Environmental Specifications

Protection & Accessories Options

The transformer can be equipped with:

Standard Accessories

✔ HV bushing
✔ LV bushing
✔ Grounding terminal
✔ Nameplate
✔ Drain valve
✔ Oil level indicator (optional)

Optional Accessories

• Fuse cutout
• Lightning arrester
• Low voltage circuit breaker
• Oil temperature indicator
• Pressure relief device
• Thermometer
• Smart monitoring device

Performance Parameters

Compliance Standards

The 75kVA Single Phase Pole Mounted Transformer can comply with:

• IEC 60076 — Power Transformer Standard
• IEEE C57 Series — Distribution Transformer Standard
• ANSI C57.12 — Utility Transformer Standard
• Regional utility specifications

Typical Configuration Example

75kVA Single Phase Pole Mounted Transformer

Custom Engineering Available

The transformer can be customized according to:

✔ Utility standards
✔ Country voltage requirements
✔ Climate conditions
✔ Installation method
✔ Protection requirements
✔ Customer specifications

The 75kVA Conventional Type Single Phase Pole Mounted Transformer provides a reliable, efficient, and cost-effective solution for overhead distribution networks, rural electrification, residential power supply, and utility infrastructure projects worldwide.

The 75kVA Conventional Type Single Phase Pole Mounted Transformer can be customized according to different utility requirements, regional power standards, installation environments, and project specifications. Flexible OEM solutions are available for voltage configuration, materials, protection accessories, and special operating conditions.

1. Electrical Parameter Customization

Rated Voltage Customization

The transformer can be designed according to different distribution network requirements.

High Voltage (HV) Options:

• 2.4kV
• 4.16kV
• 7.2kV
• 11kV
• 12.47kV
• 13.2kV
• 13.8kV
• 15kV
• 20kV
• 24.9kV
• 33kV
• 34.5kV

Low Voltage (LV) Options:

• 120/240V
• 220/380V
• 230/400V
• 240/480V
• Customized voltage available

2. Frequency Customization

Available frequency options:

• 50Hz
• 60Hz

Suitable for different regional power systems:

• North America
• Latin America
• Middle East
• Africa
• Southeast Asia

3. Winding Material Customization

Copper Winding

Advantages:

✔ Higher electrical conductivity
✔ Better overload capability
✔ Lower losses
✔ Longer service life

Recommended for:

• Utility networks
• Industrial applications
• High reliability projects

Aluminum Winding

Advantages:

✔ Cost-effective solution
✔ Lightweight design
✔ Good electrical performance

Recommended for:

• Rural electrification
• General distribution systems
• Cost-sensitive projects

4. Core Design Customization

Different core designs can be selected according to efficiency requirements.

Options:

• Grain-Oriented Silicon Steel Core
• Step-Lap Core Design
• High-Efficiency Low-Loss Core
• Amorphous Metal Core (Optional)

Benefits:

• Reduced no-load losses
• Improved energy efficiency
• Lower operating temperature
• Reduced electricity costs

5. Insulation & Cooling Customization

Insulating Oil Options:

• Mineral Oil
• Environmentally Friendly Vegetable Oil
• Biodegradable Insulating Fluid

Cooling Design:

• ONAN (Standard)
• Enhanced cooling design for high-temperature environments

Suitable for:

• Desert regions
• Tropical climates
• High-load operation

6. Protection Accessory Customization

Different protection solutions can be integrated.

Standard Accessories:

• HV bushing
• LV bushing
• Grounding terminal
• Nameplate
• Drain valve

Optional Protection:

• Fuse Cutout
• Lightning Arrester
• Surge Protection Device
• Low Voltage Circuit Breaker
• Oil Temperature Indicator
• Pressure Relief Device
• Oil Level Indicator
• Smart Monitoring Unit

7. Tank Structure Customization

Different tank designs are available:

Corrugated Tank

Features:

• Compact structure
• Better heat dissipation
• Low maintenance

Conventional Tank

Features:

• Strong mechanical strength
• Suitable for utility applications

Fully Sealed Tank

Advantages:

• Prevents oil oxidation
• Reduces maintenance
• Extends transformer life

8. Environmental Adaptation Customization

Special designs are available for harsh environments.

High Temperature Areas

Suitable for:

• Middle East
• Africa
• Desert regions

Options:

• High-temperature insulation materials
• Enhanced cooling design
• Special coating

Coastal & High Salt Areas

Options:

• Anti-corrosion coating
• Stainless steel accessories
• Salt spray protection treatment

Tropical & Humid Areas

Options:

• Moisture-resistant insulation
• Anti-condensation design
• Improved sealing structure

9. Installation Customization

According to local installation requirements:

Options:

• Pole mounting structure
• Cross-arm mounting accessories
• Special lifting arrangement
• Customized dimensions
• Utility-specific mounting design

10. Standards & Certification Customization

The transformer can be manufactured according to:

• IEC 60076
• IEEE C57 Series
• ANSI C57.12
• CSA Standards
• AS/NZS Standards
• Customer-specific utility standards

11. OEM Branding Customization

Available OEM services:

✔ Customer logo
✔ Customized nameplate
✔ Product identification labels
✔ Customized color coating
✔ Technical documentation with customer requirements

12. Documentation Support

Complete technical documents can be provided:

• Product datasheet
• Technical drawings
• Outline dimensions
• Wiring diagram
• Factory test report
• Installation manual
• Operation instructions

Recommended Configurations for Different Markets

OEM Customization Capability

With flexible manufacturing capability, the 75kVA Conventional Type Single Phase Pole Mounted Transformer can be configured for residential distribution, rural electrification, utility networks, and industrial power applications.

Customized voltage + reliable materials + advanced protection options provide a dependable transformer solution for global power distribution projects.

The 75kVA Conventional Type Single Phase Pole Mounted Transformer undergoes strict factory testing before shipment to ensure reliable electrical performance, insulation safety, mechanical strength, and long-term operation in outdoor distribution networks.

All tests are performed according to international transformer standards, including IEC 60076, IEEE C57, and ANSI C57 requirements. Each transformer is fully inspected and tested before leaving the factory.

1. Raw Material Inspection

Before production begins, all major materials are inspected to ensure quality and reliability.

Inspection Items:

✔ Silicon steel core quality
✔ Copper/aluminum conductor material
✔ Insulation paper performance
✔ Transformer oil quality
✔ Steel tank material
✔ Bushing and accessory specifications

Purpose:

• Ensure stable transformer performance
• Prevent material-related failures
• Improve service life

2. Core Assembly Test

The transformer core is inspected after assembly.

Testing Includes:

• Core stacking accuracy
• Silicon steel sheet condition
• Core grounding inspection
• Magnetic circuit verification

Purpose:

✔ Reduce no-load losses
✔ Improve energy efficiency
✔ Minimize operating noise

3. Winding Manufacturing Inspection

The transformer windings undergo strict process control.

Inspection Items:

• Winding dimensions
• Turn number verification
• Insulation structure
• Conductor quality
• Mechanical strength

Purpose:

• Ensure correct voltage ratio
• Improve short-circuit withstand capability
• Guarantee reliable operation

4. Routine Electrical Tests

Winding Resistance Test

The resistance of HV and LV windings is measured.

Purpose:

• Verify winding quality
• Check electrical connections
• Confirm resistance balance

Voltage Ratio Test

The transformer turns ratio is tested.

Purpose:

• Confirm accurate voltage conversion
• Verify tap position
• Ensure correct output voltage

Polarity Test

Checks the relationship between primary and secondary windings.

Purpose:

• Confirm correct internal connection
• Ensure proper system installation

No-Load Loss and No-Load Current Test

The transformer is energized without load.

Measured:

• No-load loss
• Excitation current

Purpose:

✔ Verify core performance
✔ Confirm energy efficiency
✔ Check magnetic circuit quality

Load Loss and Impedance Test

The transformer is tested under short-circuit conditions.

Measured:

• Load loss
• Short-circuit impedance

Purpose:

• Verify winding performance
• Confirm efficiency
• Ensure thermal design reliability

5. Insulation Performance Tests

Insulation Resistance Test

Insulation resistance is measured between:

• HV winding and ground
• LV winding and ground
• HV and LV windings

Purpose:

✔ Verify insulation condition
✔ Prevent electrical breakdown
✔ Improve operating safety

Dielectric Withstand Test

High voltage withstand testing verifies insulation strength.

Purpose:

• Detect insulation defects
• Confirm electrical safety
• Ensure reliable operation under voltage stress

Induced Voltage Test

Checks internal winding insulation performance.

Purpose:

• Verify turn-to-turn insulation
• Improve long-term reliability

6. Oil Quality & Leakage Testing

For oil-immersed pole mounted transformers:

Transformer Oil Test

Inspection includes:

• Dielectric strength
• Moisture content
• Oil quality
• Insulation performance

Oil Leakage Test

The transformer tank is tested to ensure:

• No oil leakage
• Reliable sealing
• Long-term outdoor operation

7. Mechanical Structure Inspection

The transformer body is inspected before shipment.

Inspection items:

✔ Tank welding quality
✔ Surface coating condition
✔ Bushing installation
✔ Nameplate information
✔ Grounding connection
✔ Lifting structure

8. Final Performance Inspection

Before shipment, engineers perform final verification.

Includes:

• Appearance inspection
• Dimension check
• Accessory confirmation
• Electrical parameter verification
• Test data review

Factory Routine Test Summary

Test Documents Provided

Each 75kVA Conventional Type Single Phase Pole Mounted Transformer can be supplied with:

• Factory Test Report
• Routine Test Certificate
• Quality Inspection Record
• Product Datasheet
• Technical Drawings
• Installation Instructions

Quality Assurance

Every transformer is tested before delivery to ensure:

✔ Reliable outdoor operation
✔ Stable voltage performance
✔ High insulation strength
✔ Low energy loss
✔ Long service life

Strict manufacturer testing ensures that each 75kVA Single Phase Pole Mounted Transformer is ready for safe and reliable operation in utility distribution networks, rural electrification projects, residential power systems, and agricultural applications worldwide.

1. What is a 75kVA Conventional Type Single Phase Pole Mounted Transformer?

The 75kVA Conventional Type Single Phase Pole Mounted Transformer is an oil-immersed distribution transformer designed for overhead electrical distribution systems. It reduces medium voltage electricity from utility distribution lines to low voltage power suitable for residential, agricultural, commercial, and small industrial applications.

It is commonly installed on utility poles and provides a reliable, economical solution for decentralized power distribution.

2. What are the main applications of a 75kVA pole mounted transformer?

The transformer is widely used in:

• Residential communities
• Rural electrification projects
• Agricultural power supply
• Small commercial buildings
• Workshops and small factories
• Utility distribution networks
• Solar distributed power systems
• Remote area electrification

3. What voltage levels are available for the 75kVA transformer?

The transformer can be customized according to different country and utility requirements.

High Voltage Side:

• 2.4kV
• 4.16kV
• 7.2kV
• 11kV
• 12.47kV
• 13.2kV
• 13.8kV
• 15kV
• 20kV
• 24.9kV
• 33kV
• 34.5kV

Low Voltage Side:

• 120/240V
• 220/380V
• 230/400V
• 240/480V

Customized voltage configurations are available.

4. Is the 75kVA transformer suitable for outdoor installation?

Yes. The transformer is designed for outdoor operation and can withstand various environmental conditions.

Features include:

• Weather-resistant tank design
• Outdoor anti-corrosion coating
• Oil insulation and cooling system
• UV-resistant surface protection
• Reliable sealing structure

It can be customized for:

• Desert environments
• Tropical climates
• Coastal areas
• High humidity regions

5. What type of cooling system does this transformer use?

The standard cooling method is:

ONAN (Oil Natural Air Natural)

This means:

• Transformer oil transfers heat from internal components
• External air cools the tank surface naturally
• No additional cooling equipment is required

This design provides reliable and low-maintenance operation.

6. What winding materials are available?

Customers can choose:

Copper Winding

Advantages:

• Higher conductivity
• Lower electrical losses
• Better overload capability
• Longer service life

Aluminum Winding

Advantages:

• Cost-effective
• Lightweight
• Suitable for standard distribution applications

7. What standards does the transformer comply with?

The transformer can be manufactured according to:

• IEC 60076 Power Transformer Standard
• IEEE C57 Distribution Transformer Standard
• ANSI C57.12 Utility Transformer Standard
• Customer-specific utility standards

8. What tests are performed before delivery?

Every transformer undergoes strict factory testing.

Routine tests include:

✔ Winding resistance test
✔ Voltage ratio test
✔ Polarity test
✔ No-load loss test
✔ No-load current test
✔ Load loss test
✔ Impedance test
✔ Insulation resistance test
✔ Dielectric withstand test
✔ Transformer oil test
✔ Leakage test
✔ Final appearance inspection

A complete factory test report can be provided.

9. Can the transformer be customized?

Yes. OEM customization is available.

Customization options include:

• HV/LV voltage
• Frequency (50Hz/60Hz)
• Copper or aluminum winding
• Core material
• Transformer oil type
• Tank design
• Protection accessories
• Mounting structure
• Customer logo and nameplate

10. What protection accessories are available?

Optional accessories include:

• Fuse cutout
• Lightning arrester
• Surge protection device
• Low voltage circuit breaker
• Oil level indicator
• Oil temperature indicator
• Pressure relief device
• Smart monitoring system

11. What is the expected service life of a 75kVA pole mounted transformer?

With proper installation and maintenance, the transformer can typically provide:

30 years or more of reliable service life

Service life depends on:

• Operating load
• Environmental conditions
• Maintenance practices
• Installation quality

12. How is the transformer transported?

The transformer is prepared for safe international shipment.

Transportation methods:

• Sea freight
• Land transportation
• Railway transportation

Packing includes:

• Waterproof protection
• Anti-impact protection
• Secure fixing
• Export standard packaging

13. What documents are provided with the transformer?

Customers can receive:

• Product datasheet
• Technical specifications
• Factory test report
• Quality certificate
• Installation manual
• Operation instructions
• Packing list
• Certificate of origin

14. What is the difference between conventional type and CSP pole mounted transformers?

Conventional Type Transformer:

• Basic and economical design
• Requires external protection devices
• Commonly used in utility distribution systems

CSP (Completely Self-Protected) Transformer:

• Includes built-in protection functions
• Contains internal protection components
• Provides additional safety features

The conventional type is preferred where external protection systems are already available.

15. Why choose a 75kVA Single Phase Pole Mounted Transformer?

Main advantages:

✔ Reliable overhead distribution solution
✔ Compact and easy installation
✔ Low maintenance requirements
✔ High outdoor durability
✔ Flexible voltage options
✔ Cost-effective power supply solution
✔ Suitable for global utility applications

The 75kVA Conventional Type Single Phase Pole Mounted Transformer is a proven solution for reliable electricity distribution, providing efficient and durable power supply for residential, rural, agricultural, and utility projects worldwide.