25kVA Conventional Type Single Phase Pole Mounted Transformer

The 25kVA Conventional Type Single Phase Pole Mounted Transformer is a compact and reliable distribution transformer designed for overhead power distribution networks. It is widely used to step down medium-voltage electricity from utility lines to low-voltage power suitable for residential users, rural communities, agricultural facilities, and small commercial applications.

Designed with a traditional pole-mounted structure, this transformer offers an economical and practical solution for areas where space, installation cost, and maintenance efficiency are important considerations. Its lightweight and compact design allows easy installation on distribution poles, reducing the need for additional land resources and supporting rapid deployment in rural and remote areas.

The transformer adopts a high-quality grain-oriented silicon steel core and optimized winding technology to achieve low energy losses, stable voltage regulation, and high operational efficiency. The oil-immersed ONAN cooling system provides effective heat dissipation and reliable insulation performance, ensuring continuous operation under various load conditions.

Built for outdoor environments, the transformer features a durable sealed tank structure with excellent resistance to moisture, dust, temperature variations, and harsh weather conditions. The robust construction helps extend service life while reducing routine maintenance requirements.

Manufactured according to international standards such as IEC 60076 and ANSI C57.12, the 25kVA Single Phase Pole Mounted Transformer can be customized with different voltage ratings, frequency requirements, winding materials, and accessories to meet specific project needs. Each unit undergoes strict factory testing, including insulation tests, winding resistance tests, voltage ratio tests, and performance inspections before shipment.

With reliable performance, economical installation, and long-term durability, the 25kVA Conventional Type Single Phase Pole Mounted Transformer is an ideal power distribution solution for utilities, EPC contractors, rural electrification programs, and residential distribution projects worldwide.

About ZISHENG ELECTRICAL

Zisheng are a professional 19+ years manufacturer in producing Oil-Immersed Transformers, Compact Substation, Pad Mounted Transformers, Pole Mounted Transformers and Dry Type Transformers. We own the certificates of ISO/CE/IEC 60076 and TUV Rheinland.
Transformers undergo rigorous FAT and type testing, support voltage/capacity customization. Welcome to consult for Catalog and Product. you can contact us at email [email protected].

Rural Electrification Project – Southeast Asia

A 25kVA Conventional Type Single Phase Pole Mounted Transformer was supplied for a rural electrification project in Southeast Asia to provide reliable electricity access for remote residential communities.

The project required a cost-effective and easy-to-install distribution solution for areas with limited power infrastructure. The transformer was installed on existing overhead utility poles to convert medium voltage electricity into safe low-voltage power for households, street lighting, and community facilities.

With its compact structure, efficient oil cooling system, and durable outdoor design, the transformer ensures stable operation under local environmental conditions while reducing maintenance requirements.

Project Highlights

Application: Rural Residential Electrification
Capacity: 25kVA
Transformer Type: Single Phase Pole Mounted Transformer
Primary Voltage: 11kV
Secondary Voltage: 230V
Installation: Overhead Pole Mounted Distribution System
Cooling Method: Oil Immersed, ONAN

Project Benefits

Improved electricity access for remote communities
Reduced installation costs through pole-mounted design
Reliable power supply for residential and public facilities
Easy maintenance and long service life

Location: Southeast Asia
Customer Type: Utility Company / EPC Contractor / Rural Electrification Program

Rated Power	25 kVA
Rating Primary Voltage	12.4-34.5kV
Secondary Voltage	480-240V 240-120V 277V Customized
Frequency	50/60Hz
Vector Group	Ii0,Ii6
Winding Material	Aluminum/Copper
Efficiency	As IEEE,Doe 2016,CAS Std or Customized
Impedance Voltage	Nominal 2% or Customized 1.1-5.75%
Altitude	≤1,000m or Customized
Color	ANSI 70 Light gray/Munsell 7GY3.29/1.5 or customized etc
Tank material	Mild Steel, 304 Stainless Steel
Insulating Oil Weight	45 kg
Total Weight	258 kg
Outline Dimensions（W×D×H）	560×590×935 (mm)

Lifting Lug

Tap Changer

Pressure Relief Valve

Tank Cover and clamp

L.V Bushing

HV Bushing

Ground Strap

Nameplate

Non-PCB decal

High Voltage Warning Signs

Suport lug

Oil fill valve

Rural Electrification Projects
The 25kVA Conventional Type Single Phase Pole Mounted Transformer is widely used in rural and remote areas to provide reliable electricity supply for villages, households, schools, and community facilities through overhead distribution networks.

Residential Power Distribution
Suitable for individual homes, small residential communities, and low-load areas, providing safe and stable voltage conversion from medium voltage to low voltage.

Agricultural Power Systems
Used for farms, irrigation equipment, livestock facilities, and agricultural operations requiring dependable electricity supply.

Small Commercial Facilities
Provides power for small shops, workshops, offices, and local businesses with moderate electricity demand.

Utility Overhead Distribution Networks
Ideal for power utilities and EPC contractors implementing medium-voltage overhead distribution projects due to its compact design, simple installation, and low maintenance requirements.

Remote Area Power Supply
A practical solution for isolated regions and developing areas where reliable, economical, and easy-to-maintain power distribution equipment is required.

It is mainly used for rural electrification, residential power distribution, agricultural applications, and small commercial power supply through overhead distribution networks.

The transformer can be customized according to project requirements, with common configurations including 11kV/0.23kV, 11kV/0.4kV, 13.8kV/0.24kV, and other voltage combinations.

Its compact design, simple installation, low infrastructure requirements, and easy maintenance make it ideal for rural and remote power distribution systems.

Yes. It is designed for outdoor installation with a sealed oil tank structure that provides protection against moisture, dust, temperature changes, and harsh weather conditions.

It provides excellent cooling performance, reliable insulation, stable operation, low maintenance requirements, and a long service life.

Yes. We provide OEM customization options including voltage ratings, frequency, winding materials, accessories, protection devices, and installation requirements.

Each transformer is tested before delivery, including winding resistance test, voltage ratio test, insulation test, no-load loss test, load loss test, and overall performance inspection.

Typical customers include utility companies, EPC contractors, rural electrification programs, government power projects, and local distribution companies.