Overview

Pad Mounted ZGD Series Single Phase Oil Immersed Transformer is a ground-mounted single-phase distribution transformer designed for medium-voltage power distribution systems. It is mainly used to step down medium-voltage electricity from utility distribution lines to low-voltage power for residential communities, commercial facilities, public utilities, light industrial loads, rural distribution networks, and outdoor electrical service points.

Unlike overhead pole-mounted transformers, a pad mounted transformer is installed on a concrete pad or prepared ground foundation. Its enclosed structure makes it suitable for areas where underground or ground-level distribution systems are preferred. This type of transformer is commonly used in residential neighborhoods, commercial parks, schools, public buildings, municipal facilities, and outdoor utility distribution projects where safety, appearance, installation convenience, and accessibility are important.

The ZGD Series is a single-phase oil immersed transformer. Transformer oil acts as both the cooling medium and insulation medium, helping dissipate heat during operation and supporting stable electrical performance. The oil immersed design is widely used in distribution transformer applications because of its mature technology, good insulation performance, reliable operation, and long service life.

According to the UL certified oil transformer product list, the Pad Mounted ZGD Series – Single Phase has a capacity coverage of up to 250kVA and a high-voltage coverage range of 11kV to 17kV. It is listed under UL List No. E540521 and is designed with reference to standards such as IEEE C57.12.00, IEEE C57.12.28, and IEEE C57.12.90. These standards are commonly used for distribution transformer construction, enclosure integrity, testing, and performance requirements.

For international projects, the ZGD Series Single Phase Pad Mounted Transformer is suitable for customers who need a safe, reliable, and easy-to-maintain outdoor transformer solution. It can be used by power utilities, electrical contractors, real estate developers, industrial users, infrastructure contractors, and energy project developers. The transformer can be customized according to project requirements, including rated capacity, voltage ratio, frequency, tapping range, enclosure design, bushing arrangement, accessories, protection options, coating color, and nameplate requirements.

Product Advantages

1. UL Listed Transformer for International Projects
The Pad Mounted ZGD Series Single Phase Transformer is included in the UL certified oil transformer product list. UL listing helps improve product credibility for international customers and is especially valuable for projects that require recognized product certification, reliable quality, and professional electrical standards.

2. Ground-Mounted Pad Installation
The transformer is designed for pad mounted installation. It can be placed on a concrete foundation or outdoor pad, making it suitable for ground-level distribution systems. Compared with overhead transformers, pad mounted transformers offer a cleaner appearance and are suitable for modern residential and commercial distribution networks.

3. Suitable for Single-Phase Distribution Systems
This product is designed for single-phase power distribution. It can supply power to homes, residential communities, light commercial facilities, public service points, small buildings, farms, and other single-phase loads. For many local distribution systems, single-phase pad mounted transformers are practical and cost-effective.

4. Oil Immersed Cooling and Insulation
The transformer uses oil as the insulation and cooling medium. Oil immersed technology provides reliable heat dissipation and stable insulation performance. This helps the transformer operate safely and continuously under normal load conditions.

5. Capacity Coverage up to 250kVA
With a maximum capacity coverage of 250kVA, the ZGD Series Single Phase Transformer can meet a wide range of residential, commercial, and light-duty distribution requirements. Customers can select the suitable capacity according to load demand, local grid conditions, and future expansion needs.

6. High-Voltage Coverage from 11kV to 17kV
The product supports high-voltage coverage from 11kV to 17kV, making it suitable for many medium-voltage distribution networks. This voltage range is commonly used in utility distribution systems and can be adapted to project-specific requirements.

7. Designed with IEEE Standard References
The product is designed with reference to IEEE C57.12.00, IEEE C57.12.28, IEEE C57.12.90 and related requirements. These standards help guide transformer design, construction, testing, and outdoor enclosure performance, making the product suitable for professional power distribution projects.

8. Enclosed Outdoor Structure
The pad mounted design includes an outdoor enclosure to protect transformer components and improve safety. The enclosed design helps reduce the risk of accidental contact with live parts and provides better suitability for public areas, residential environments, and outdoor distribution zones.

9. Convenient Operation and Maintenance
The ground-mounted structure makes inspection and maintenance more convenient compared with pole-mounted equipment. Operators can access the transformer from ground level, which can simplify installation, inspection, cable connection, and routine service work.

10. Customizable for Utility and Project Requirements
The transformer can be customized according to different utility specifications and project needs. Optional configurations may include voltage ratio, tapping range, bushing type, cable connection method, protection accessories, grounding device, pressure relief device, liquid level indicator, temperature indicator, coating color, and labeling.

Product Specifications

Product Applications

Pad Mounted ZGD Series Single Phase Oil Immersed Transformer is widely used in outdoor single-phase distribution systems. It is designed for applications where ground-mounted installation is preferred and where the transformer needs to provide reliable voltage transformation for local low-voltage loads.

In residential distribution networks, this transformer can be installed in neighborhoods, villas, residential communities, apartment service areas, and suburban housing projects. It provides low-voltage power to homes, lighting systems, small equipment, and community service loads. The pad mounted structure is often preferred because it can be installed at ground level and integrated more easily into residential environments.

In commercial applications, the ZGD Series transformer can supply power to small shops, service buildings, office areas, schools, public facilities, parking areas, and local business centers. It is suitable for projects where the power demand is moderate and a single-phase distribution transformer is enough to serve the load.

In utility distribution systems, the product can be used by power companies for local power distribution, underground distribution systems, and service connection points. It helps distribute power safely from medium-voltage lines to low-voltage users while offering convenient ground-level access for inspection and maintenance.

In rural and suburban projects, this transformer can be used for farms, small workshops, irrigation systems, remote buildings, road service facilities, and distributed outdoor loads. It provides a practical power transformation solution where overhead installation is not preferred or where pad-mounted installation is required by the project.

In public infrastructure projects, the transformer can be used for lighting systems, monitoring stations, small pumping stations, communication equipment, utility service points, and outdoor public electrical facilities. Its enclosed outdoor structure makes it suitable for locations where electrical equipment must be installed in accessible areas.

In renovation and grid expansion projects, Pad Mounted ZGD Series transformers can be used to replace old transformers, add new service capacity, or support underground distribution upgrades. Its capacity range and voltage coverage make it suitable for many small and medium distribution projects.

Overall, Pad Mounted ZGD Series Single Phase Oil Immersed Transformer is a reliable and practical solution for outdoor single-phase power distribution. With UL listed product information, capacity coverage up to 250kVA, high-voltage coverage from 11kV to 17kV, and IEEE standard references, it is suitable for international utility, residential, commercial, rural, and infrastructure power distribution projects.