Pad Mounted Transformer manufacturers
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CHBEB is one of the professional transformer manufacturers in China, specializing in high-quality pad mounted transformers for diverse industrial, commercial, and utility applications. As a leading China-based transformer factory, our company designs and manufactures transformers in various capacities and configurations to meet different customer requirements. We also offer customized solutions to ensure reliable performance, safety, and efficient power distribution. Contact us today to request a free quote or more information.
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All You Need to Know About Pad mounted transformer
Pad-mounted transformers are essential components in power distribution systems. They are installed on concrete pads at ground level. These transformers are common in residential areas, commercial zones, and small industrial sites. The design includes a locked steel enclosure for safety and protection. Pad-mounted transformers use oil or other materials for insulation and cooling. They handle medium voltages and distribute power efficiently. These transformers are compact and blend into urban environments. They are weather-resistant and suitable for outdoor use. Regular maintenance, like checking oil levels, ensures long-term performance. Understanding pad-mounted transformers is important for those managing local power networks. They are key to reliable electricity delivery.
Advantages of Pad mounted transformer
Space-Saving Design
Pad-mounted transformers are compact. They fit in small areas. This design saves space in urban and suburban settings. Utilities can place them in tight spots easily.
Enhanced Safety
These transformers have a locked enclosure. It keeps people safe from high voltage. The design prevents accidents. Only trained workers can access the equipment.
Improved Aesthetics
Pad-mounted transformers look better than pole-mounted ones. They blend with the surroundings. This feature makes them good for residential areas. They don't spoil the view.
Weather Resistance
The enclosure protects the transformer from weather. It can handle rain, snow, and heat. This protection makes the transformer last longer. It also needs less maintenance.
Reduced Power Outages
Pad-mounted transformers are close to users. This placement reduces power loss. It also makes fixing problems faster. Users get more reliable power supply.
Flexibility in Installation
These transformers work in many places. They fit in parks, parking lots, and near buildings. This flexibility helps planners design better power systems. It makes power distribution easier.
How Do Pad mounted transformer Work?
Pad-mounted transformers change high voltage to low voltage. They sit on concrete pads on the ground. These transformers have two sides. One side gets high voltage power. The other side sends out low voltage power. Inside, they have coils of wire. These coils change the voltage. The transformer uses magnetic fields to do this. It has a metal case for protection. This case keeps people safe from high voltage. It also guards against weather. Pad-mounted transformers work all the time. They supply power to homes and businesses. Utility workers can open the case for repairs. Regular people cannot open it. This design makes pad-mounted transformers safe and reliable.
What Are Pad mounted transformer Used For?
Pad-mounted transformers have many uses. They supply power to homes in neighborhoods. These transformers work well in housing developments. They also provide electricity to small businesses. Shopping centers often use them. Schools and hospitals rely on pad-mounted transformers too. In parks, they power lights and facilities. Industrial areas use them for factories and warehouses. Office buildings get their power from these transformers. They fit nicely in urban areas with limited space. Pad-mounted transformers work in rural settings as well. Farms and remote buildings use them. They are good for places that need hidden power sources. Golf courses and resorts often choose these transformers. They help keep views nice while providing power.
Core Assembly
Workers build the transformer core. They use thin sheets of special steel. These sheets are stacked and clamped together. This core helps manage the magnetic field.
Winding the Coils
Machines wind copper wire around the core. They make two sets of coils. One set is for high voltage. The other is for low voltage.
Insulation Application
Workers add insulation to the coils. They use special paper or resin. This insulation keeps the electricity where it should be. It also helps cool the transformer.
Drying and Filling
The transformer parts go in a big oven. This oven dries out all moisture. Then, workers fill the transformer with special oil. This oil helps cool and insulate.
Tank Assembly
Workers put the core and coils in a metal tank. This tank protects the parts inside. It also holds the cooling oil.
Testing
Technicians test the transformer. They check for proper voltage change. They also look for any leaks or problems. This step ensures the transformer works right.
Final Assembly
Workers add the outer casing. They install bushings for connecting wires. They also add nameplates and warning signs. The transformer is now ready for use.
Types of Pad-Mounted Transformers
Pad-mounted transformers are vital for underground power distribution in residential, commercial, and industrial settings. They are housed in secure, weather-resistant enclosures and placed on concrete pads. Different types cater to specific power needs and applications.
Single-Phase Pad-Mounted Transformer
Single-phase transformers power homes, small businesses, or light commercial areas. They typically range from 15 to 250 kVA. Their compact design fits well in residential neighborhoods, ensuring safe and reliable electricity for lighting and appliances.
Three-Phase Pad-Mounted Transformer
Three-phase transformers support larger loads in commercial buildings, factories, or shopping centers. With capacities from 45 kVA to 10,000 kVA, they handle three-phase power for heavy equipment and large-scale operations, offering robust performance.
Loop Feed Pad-Mounted Transformer
Loop feed transformers feature six high-voltage bushings, allowing connection to two power sources. This setup ensures uninterrupted power, making them ideal for critical facilities like hospitals or data centers where reliability is essential.
Radial Feed Pad-Mounted Transformer
Radial feed transformers use three high-voltage bushings for a single power source. They are simpler and cost-effective, suitable for smaller systems like suburban grids or small industrial setups with straightforward power needs.
Amorphous Core Pad-Mounted Transformer
Amorphous core transformers use a special metal alloy in the core to minimize energy loss. They are highly efficient and eco-friendly, ideal for sustainable power distribution in urban or environmentally sensitive areas.
Each type is designed for specific environments and power requirements, ensuring safe, efficient, and reliable electricity distribution.
Supply Pad-Mounted Transformers By Capacity Range
Small Capacity (15-250 kVA)
Single-phase pad-mounted transformers, ideal for homes and small businesses, range from 15 to 250 kVA. They ensure reliable power for lighting and appliances.
Medium Capacity (250-1000 kVA)
Three-phase transformers in this range suit commercial and small industrial sites. They handle larger loads for offices and factories efficiently.
Large Capacity (1000-10,000 kVA)
High-capacity transformers power large industrial facilities and utilities. They support heavy equipment and critical infrastructure with robust performance.
Pad-mounted transformer vs pole-mounted transformer
Pad-mounted transformer
CHBEB, as a reliable pad-mounted transformer manufacturer, offers transformers with sealed steel tanks placed on concrete pads. This design keeps out rain, dust, and animals. The oil inside cools the core and windings. The sealed tank lowers the chance of leaks. The cabinet has locked doors for safety. It allows easy cable connections and testing. Pad-mounted transformers work well in places where space is small. They help keep power systems safe and neat.
pole-mounted transformer
Pole-mounted transformers are compact, oil-filled units mounted on utility poles. They provide efficient power distribution for rural and suburban areas. With capacities from 5 to 500 kVA, they handle single or three-phase power. Their weather-resistant design ensures durability, while oil cooling enhances performance. Regular maintenance ensures reliability for homes and small businesses.
Why Choose Oil-Immersed Pad-Mounted Transformers?
Today, nearly all pad-mounted transformers on the market are oil-immersed — or liquid-filled — and there’s a clear reason why. Pad-mounted units are typically installed outdoors and connected to underground distribution systems, where efficient heat dissipation and high insulation are critical. The liquid-filled design provides superior cooling and electrical insulation, ensuring stable performance even in harsh weather or high-load conditions. Compared to dry-type units, a liquid-filled pad-mounted transformer offers better thermal management, longer service life, and lower maintenance. At CHBEB, we manufacture compact, tamper-proof oil-immersed pad-mounted transformers that meet IEC and ANSI standards. Widely used in residential, commercial, and industrial settings, our transformers deliver safe, efficient, and durable power distribution trusted by global clients.
How to Choose the Right Voltage Class for Three Phase Pad Mounted Transformers?
When selecting a Three Phase Pad Mounted Transformer, voltage class plays a critical role in ensuring safe, efficient, and application-specific performance. CHBEB offers a full range of oil-immersed pad-mounted transformers designed to meet varying system demands—from standard urban distribution to heavy industrial loads.
7.2–15 kV Class Pad-Mounted Transformers5 kV (ANSI 15 kV Class)
Typical Voltages: 7.2 / 10 / 11 / 12.47 / 13.2 / 13.8 / 15 kV
Typical BIL: 95 kV (upgradeable upon request)
Best For: Residential communities, shopping centers, school campuses, and small industrial parks with short feeder lengths and conventional loads.
20–24 kV (ANSI 25 kV Class)
Typical Voltages: 20 / 22 / 24 kV
Typical BIL: 125 kV or 150 kV
Best For: Urban MV distribution, industrial parks, solar/wind feeder lines, and medium-voltage applications requiring longer transmission distances or higher load density.
33–35 kV (ANSI 35 kV Class)
Typical Voltages: 33 / 34.5 / 35 kV
Typical BIL: 150 kV or 200 kV
Best For: Large-scale industrial facilities, end-of-grid substations, high-load commercial zones, and long-distance primary distribution systems.
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What We Do
CHINA BEI ER BIAN (CHBEB) GROUP, with 218 million in registered capital, originated from Beijing Beierbian Transformer Group. Headquartered in Beijing for R&D, it operates major production bases in Nanjing and Yueqing, producing high-quality products.
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XiangYang Industrial Zone ，YueQing，WenZhou，ZheJiang，China
contact us
- chbebgroup@chbebpower.com
- +86 13057780111
- +86 13057780111
- +86 15558785111
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