Single-phase pad-mounted transformer

The single-phase pad-mounted transformer is designed to improve performance in terms of rated KVA, compact dimensions, lower weight, safety and sustainability. There is no distribution room, can be placed directly indoors or outdoors, can also be placed on the streets and green belt and reliably ensure personal safety, both the power supply facilities, but also decorate the environment. It is low-profile, compartment type transformer, which supplies suitable for outdoor mounting on pads without additional protective enclosures, and meet the following standard: IEC60076, ANSI/IEEEC57.12.00, C57.12.38, C57.12.90 .


Single Phase Pad Mounted Transformer

What is the single-phase pad-mounted transformer?

1. The high voltage porcelain sleeve installed in the box cover is equipped with ring terminal blocks, suitable for aluminum or copper wires.

2. The box cover adopts ring-shaped overlock structure, which has uniform strength and reliable sealing.

3. The low voltage cover and box wall terminal are ring-shaped bolts, and the surface is tin-plated.

4. 4. Equipped with self-sealing pressure release valve.

5. The single phase pad-mounted type transformer is manufactured in accordance with ANSI standards.

6. High voltage with plug-in fuse.

7.  Double voltage switch can be selected for high voltage, which is suitable for different power grid.

8. With pressure release valve, safe and reliable.

9. The single-phase pad-mounted transformer hook and support frame are produced according to American standards.

10. The ground terminal is American and can withstand large currents.

Specifications of the single-phase pad-mounted transformer

two types of three phase pad mounted transformer
two types of three phase pad mounted transformer
(kva) Rated power(v) High voltage(v) Low voltageNo-load loss (W)Loss on load (W)
1534500/19920/13800/7957/13200/7620 or others120-240 240-480 347  60050195

Certification of Daelim transformers

What are the standard dimensions of single-phase pad-mounted transformers?

(kva) Rated powerDimensions (mm)Weight (kg)
WDHWight OilTotal Wight

Environment of use of single-phase pad-mounted transformer

1. The altitude does not exceed 1500m

2. Use the ambient temperature +40℃—-20℃

3. The annual average humidity does not exceed 90

4. Both indoor and outdoor

Advantages of single-phase pad-mounted transformers

single phase pad mounted transformer1

One of the greatest advantages of single-phase pad-mounted transformers is their durability. They are built to withstand the harshest outdoor environments and are resistant to corrosion, moisture and other environmental factors. This makes them an ideal solution for applications where reliability is critical.

Another advantage of pad-mounted transformers is their compact size. They are designed to be placed on a small concrete pad, making them ideal for use in confined spaces or in areas where space is at a premium. In addition, these transformers are designed to be easy to install, which can save you time and money in installation costs.

Single-phase pad-mounted transformers are an essential component of the power grid. They are used to transmit and distribute electrical power at low voltage, typically up to 34.5 kV. These transformers are installed in subway concrete vaults or on concrete pads, and are designed to be compact, efficient and low maintenance.

Here are some of the advantages of using single-phase pad-mounted transformers:

1. space saving: single-phase pad-mounted transformers are designed to be compact and require very little space. This makes them the ideal choice for areas where space is limited, such as urban areas or densely populated suburbs.

Easy Installation: These transformers are easy to install, and can be installed above or below ground level, depending on your needs. They are designed to be self-contained, requiring very little additional equipment or infrastructure to operate.

Low maintenance: Single-phase pad-mounted transformers are designed to require little maintenance. They require very little attention once installed and are designed to be highly reliable.

4.Efficient: These transformers are designed to be highly efficient, with very low losses. This means that they are capable of supplying power to the grid with minimal waste or inefficiency.

5.Customizable: The single-phase pad-mounted transformers are highly customizable, and can be designed to meet your specific power distribution needs. They are available in a wide range of sizes and configurations, so you can choose the transformer that best suits your needs.

Cost-effectiveness: Single-phase pad-mounted transformers are a cost-effective option for power distribution. They require minimal maintenance and have a long service life, which can help keep your operating costs low over time.

In summary, single-phase pad-mounted transformers are a reliable, efficient and cost-effective solution for power distribution. They offer a number of advantages, such as easy installation, low maintenance and customizable configurations. If you need a power distribution solution, a single-phase pad-mounted transformer may be the right choice for your needs.

How to Buy a Pad-Mounted Transformer in the USA?

Specifications for single-phase pad-mounted transformers

single phase pad mounted transformer3

When choosing a single-phase pad-mounted transformer, there are a few key specifications to consider. The first is the kVA rating of the transformer, which is a measure of the transformer’s ability to handle the electrical load. Other specifications to consider are the transformer’s voltage rating, frequency and temperature rating.

In addition to these basic specifications, you should also consider the dimensions and weight of the transformer. The size of the transformer will depend on the specific application and it is important to ensure that it fits in the available space. The weight of the transformer is also an important consideration, as it will affect the transportation and installation of the transformer.

Single-phase pad-mounted transformers are used to convert high-voltage power to low-voltage power, which is suitable for domestic and industrial use. These transformers are designed to be installed outdoors and are usually placed on a concrete pad or other suitable surface.

Specifications for single-phase pad-mounted transformers may vary depending on the specific model and intended use. Below are some key specifications to consider:

  • Rated power capacity: This is the maximum power that the transformer can withstand. Single-phase pad-mounted transformers are available in a wide range of power ratings, from a few kVA to over 500 kVA.

  • Input voltage: Refers to the voltage of the high voltage supply being delivered to the transformer.

  • Output voltage: This is the voltage of the low voltage power produced by the transformer.
    Frequency: The frequency of the power supply may vary depending on location and other factors.

  • Efficiency: Refers to the percentage of electrical power that is converted to usable output power. Higher efficiency transformers are more cost effective.

  • Temperature rise: The temperature of the transformer during operation must not exceed certain limits, specified by the manufacturer.

  • Insulation class: This is a rating that indicates the level of protection of the transformer insulation.

  • Enclosure type: Single-phase pad-mounted transformers can be designed with different types of enclosures to protect the components from environmental factors.

  • Size and weight: The physical size and weight of the transformer may vary depending on power capacity and other factors.

When selecting a single-phase pad-mounted transformer, it is important to consider these specifications to ensure that the transformer is suitable for the intended application. It is recommended that a qualified electrician or transformer supplier be consulted to determine the proper specifications for your specific needs.

pad mounted transformer, everything you need to know

Cost of single-phase pad-mounted transformers

single phase pad mounted transformer2

The cost of a single-phase pad-mounted transformer will depend on several factors, such as the specifications, size and weight of the transformer. In general, these types of transformers are more expensive than their pole-mounted counterparts due to their durability, reliability and ease of installation. However, the long-term benefits of a pad-mounted transformer can offset the initial investment.

Single-phase pad-mounted transformers are an important component of electrical distribution systems. They are widely used in residential, commercial and industrial areas, where they reduce the voltage of main power lines to a lower voltage suitable for use in buildings or equipment. If you are considering purchasing a single-phase pad-mounted transformer, it is important to consider its cost.

The cost of a single-phase pad-mounted transformer depends on several factors, such as its size, capacity and features. In general, the larger the transformer and the more features it has, the more expensive it will be. However, cost is not the only factor to consider when purchasing a transformer, as the reliability and efficiency of the equipment can affect long-term costs.

To get an accurate estimate of the cost of a single-phase pad-mounted transformer, it is best to consult a reputable transformer manufacturer or supplier. They can provide detailed information on the price range of transformers based on their specifications, including size, capacity and other features.

It is important to keep in mind that while the cost of a single-phase pad-mounted transformer may initially seem high, it is a long-term investment that can save money in the long run. High-quality transformers are designed to be durable, reliable and efficient, which can reduce maintenance and operating costs over time. In addition, transformers with advanced features, such as remote monitoring and control, can help avoid downtime and improve overall system performance.

In general, when considering the cost of a single-phase pad-mounted transformer, it is important to balance the upfront costs with the long-term benefits. Investing in a reliable, high-quality transformer can save money in the long run, while cutting corners and buying a cheaper, lower-quality transformer can mean higher costs and more downtime down the road.

What You Need To Know About Power Transformer On Pole

What is a single-phase pad-mounted transformer and how does it work?

A single-phase pad-mounted transformer is a type of electrical transformer designed for installation on a concrete pad or foundation. It plays a crucial role in power distribution, especially in areas where subway electrical distribution is preferred.

  1. Design and construction: These transformers are enclosed in a rugged, weatherproof enclosure, ensuring their safety and longevity. They are specifically designed to be tamper resistant, making them ideal for public areas.
    Functionality: The primary function of a single-phase transformer pad is to convert high-voltage electricity from power lines into low-voltage electricity suitable for residential or commercial use.
    Advantages: One of the main advantages of using a single-phase pad-mounted transformer is its compact design, which allows for easy installation and minimal visual impact on the landscape.
    Safety: These transformers are equipped with safety features that protect against electrical faults, ensuring a constant and reliable power supply.
    Maintenance: Thanks to their enclosed design, single-phase pad-mounted transformers require minimal maintenance, making them a cost-effective solution for power distribution.
  2. Renewable energy integration: These transformers can be integrated with renewable energy sources, such as solar panels, to provide a sustainable energy solution.
    167 kva pad-mounted transformer: This is a specific transformer size that denotes its capacity. The 167 kva rating indicates the maximum amount of power it can handle.
    Applications: Single-phase pad-mounted transformers are commonly used in residential areas, commercial buildings and industrial facilities. They are especially beneficial in areas where overhead power lines are not feasible.
    Customization: Manufacturers, such as Daelim, offer customized solutions tailored to specific industry needs, ensuring optimum performance and efficiency.
    Global standards: These transformers are manufactured in accordance with various international standards, such as ANSI, IEC and IEEE. This ensures their quality and reliability in various environments.

How does the size of a single-phase pad-mounted transformer affect its performance?

The size of a single-phase pad-mounted transformer plays a key role in determining its capacity, efficiency and suitability for specific applications.

  1. Capacity and power: Size is usually related to the kVA rating of the transformer. For example, a larger single-phase subway transformer usually has a higher kVA rating, indicating its ability to handle more power.

  2. Physical dimensions: The actual physical dimensions of the transformer may influence where it can be installed. Larger transformers may require more space and a more robust foundation.


  3. Heat dissipation: Larger transformers have a larger surface area, which can help dissipate heat more effectively, ensuring that the transformer stays within safe operating temperatures.


  4. Efficiency: Size can influence transformer efficiency. Although larger transformers can handle more power, they can also have higher losses. It is essential to balance size with efficiency needs.


  5. Cost: Generally, larger transformers are more expensive due to the greater amount of materials and technology incorporated.


  6. Service life: A transformer that is the right size, neither too large nor too small for its intended application, will typically have a longer service life, as it will not be constantly overloaded or underutilized.


  7. Safety: Oversized transformers can lead to inefficiencies and potential safety hazards, while undersized transformers can become overloaded.


  8. Integration with systems: Size determines how the transformer integrates with other electrical systems. For example, the cost of a single-phase pad-mounted transformer can vary depending on its size and the complexity of the systems for which it is intended.


  9. Environmental impact: Larger transformers can have a more significant environmental impact, both in terms of physical space and potential electromagnetic emissions.


  10. Tailor-made solutions: Companies such as Daelim offer tailor-made solutions, ensuring that the size of the transformer is perfectly matched to the customer’s requirements, optimizing performance and cost-effectiveness.

What factors determine the cost of a single-phase pad-mounted transformer?

Several factors influence the cost of a single-phase pad-mounted transformer:

  1. Capacity: Transformers with higher kVA capacity, such as the 167 kVA single-phase pad-mounted transformer, tend to cost more because of their ability to handle more power.


  2. Materials used: The quality and type of materials, including the core and coil, significantly influence the price.


  3. Technological features: Advanced features, such as remote monitoring capability or integration with renewable energy sources, can increase cost.


  4. Brand and manufacturer: Established brands, known for quality and reliability, may command higher prices.


  5. Customization: Tailor-made solutions, such as those offered by Daelim, to meet specific industry needs can influence cost.

  6. Installation costs: Factors such as site preparation, labor and additional equipment can add to the total expense.


  7. Maintenance and warranty: Transformers with extended warranties or maintenance packages included may have a higher initial cost, but can save money in the long run.


  8. Efficiency: High-efficiency transformers, while potentially more expensive initially, can result in energy cost savings over time.


  9. Certifications: Transformers that meet international standards such as ANSI, IEC and IEEE can be higher priced due to the rigorous testing and quality assurance they undergo.


  10. Geographic location: The cost of a transformer can vary depending on the region or country of purchase due to factors such as transportation, taxes and import/export duties.

What is the difference between single-phase pad-mounted transformers and three-phase pad-mounted transformers?

Single-phase and three-phase pad-mounted transformers perform the same main function, but have distinct differences:

  1. Phase configuration: The most obvious difference is the number of phases. Single-phase transformers handle electricity in a single alternating current, while three-phase transformers handle electricity in three separate alternating currents.


  2. Power distribution: Three-phase transformers are commonly used in industrial environments because of their ability to distribute large amounts of power efficiently.


  3. Efficiency: Three-phase transformers are generally more efficient than single-phase transformers, especially in industrial applications where large machines require constant power.


  4. Size and weight: Three-phase transformers are usually larger and heavier than their single-phase counterparts because they handle more power and have more components.

  5. Cost: Due to their larger size and capacity, three-phase transformers are usually more expensive than single-phase transformers.


  6. Applications: Single-phase transformers are typically used in residential areas and small businesses, while three-phase transformers are more common in industrial settings and large commercial establishments.


  7. Voltage levels: Three-phase transformers can handle higher voltage levels, making them suitable for heavy machinery and high-demand scenarios.


  8. Durability: Given their design and intended use in demanding environments, three-phase transformers are built to be exceptionally durable.


  9. Safety features: Both types of transformers come equipped with safety features, but three-phase transformers may have additional protections due to the higher voltages and currents they handle.


  10. Customization: Both single-phase and three-phase transformers can be customized to meet specific requirements. For example, Daelim offers tailor-made solutions for both types, ensuring optimum performance.

What are the specifications of single-phase pad-mounted transformers?

Specifications provide detailed information on a product’s design, ratings and standards. For single-phase pad-mounted transformers, these specifications include:

  1. Power in kVA: Indicates the capacity of the transformer. For example, a single-phase pad-mounted transformer has a capacity of 167 kVA.


  2. Voltage rating: Specifies the input (primary) and output (secondary) voltage levels that the transformer can withstand.


  3. Frequency: Transformers typically operate at a frequency of 50 Hz or 60 Hz, depending on the region.


  4. Cooling method: Describes how the transformer dissipates heat, e.g., oil immersed or air cooled.


  5. Impedance: This value, usually expressed as a percentage, indicates the resistance of the transformer to current flow.


  6. Temperature rise: Specifies the maximum allowable temperature rise when the transformer is at full load.


  7. Efficiency: Indicates the efficiency with which the transformer converts input power to output power.


  8. Safety features: Details existing protective measures, such as circuit breakers or surge protectors.


  9. Enclosure type: Describes the type of housing or enclosure that protects the transformer from external elements.


  10. Compliance and standards: Lists the international standards to which the transformer adheres, such as ANSI, IEC and IEEE.

How can I choose the single-phase pad-mounted transformer that best suits my needs?

Selecting the right single-phase transformer is crucial for efficient power distribution and safety. This guide will help you make an informed decision:

  1. Determine your power requirements: Evaluate the total power requirements of the area or equipment you intend to power. This will help you choose a transformer with the appropriate kVA rating.


  2. Consider voltage requirements: Make sure the transformer’s input and output voltage levels match your source and destination voltage requirements.


  3. Location and installation: If space is limited, consider the physical dimensions of the transformer. Some transformers, such as single-phase pad-mounted transformers, are designed to fit into specific spaces.


  4. Safety and compliance: Choose transformers that meet international standards such as ANSI, IEC and IEEE. This ensures quality, safety and reliability.


  5. Efficiency: High-efficiency transformers may have a higher initial cost, but they save energy in the long run.


  6. Método de refrigeración: Dependiendo del entorno, decida entre transformadores sumergidos en aceite o refrigerados por aire.

  7. Customization: If you have unique requirements, companies like Daelim offer tailor-made solutions to meet specific needs.


  8. Budget: While it is essential to invest in quality, keep your budget in mind. Sometimes a more expensive transformer may offer features you don’t necessarily need.


  9. Warranty and after-sales service: A good warranty and reliable after-sales service can save costs and hassle in the long run.


  10. Consult experts: If you are unsure, consult professionals or the manufacturer for recommendations based on your specific needs.

Are there any safety precautions to take when installing a single-phase pad-mounted transformer?

Safety is paramount when working with electrical equipment. Here are some precautions to keep in mind:

  1. Qualified personnel: Ensure that only trained and qualified personnel carry out the installation.


  2. Location: Install the transformer away from flammable materials and ensure adequate ventilation for cooling.


  3. Grounding: Properly ground the transformer to prevent electric shock and ensure safe operation.


  4. Clearance: Maintain sufficient clearance around the transformer for safe operation and maintenance.


  5. Protective equipment: Always use proper protective equipment, such as gloves and safety glasses, during installation.

  6. Follow manufacturer’s instructions: Adhere to the manufacturer’s instructions and specifications, such as those provided on the single-phase pad-mounted transformer pdf, to ensure safe installation and operation.


  7. Periodic Inspections: Periodically inspect the transformer for any signs of wear, damage or oil leaks.


  8. Avoid overloading: Never exceed the specified kVA rating of the transformer to avoid overheating and possible damage.


  9. Emergency protocols : Always have emergency protocols in place. Make sure that all personnel are aware of the steps to follow in case of electrical faults or fire.


  10. Isolation: Install the transformer in an area where it can be easily isolated from the main power grid in case of maintenance or emergencies.

  11. Weather protection: If the transformer is installed outdoors, ensure that it has adequate protection from the weather elements, especially rain and direct sunlight.


  12. Signage: Post clear and visible signs indicating the presence of high voltage and potential hazards. This can deter unauthorized access and inform people of the risks.


  13. Lockout/Tagout Procedures: Implement lockout/tagout procedures to ensure that the transformer is de-energized during maintenance or repair work, preventing accidental energization.


  14. Routine maintenance: Schedule periodic maintenance checks to ensure that the transformer is operating efficiently and safely. This includes checking for any wear and tear, cleaning and replacing oil if necessary.


  15. Keep up to date:Regularly review and keep up to date with safety guidelines and best practices. Manufacturers, such as Daelim, often provide updates and training on safety protocols.

How does a single-phase, self-supporting transformer contribute to efficient power distribution?

Single-phase pad-mounted transformers play a key role in ensuring that power is distributed efficiently and safely:

  1. Voltage regulation: These transformers convert high voltage from power lines to a lower, usable voltage for homes and businesses, ensuring that devices receive the correct voltage.


  2. Compact design: Their compact design allows installation in urban areas where space is limited, ensuring power distribution even in densely populated regions.


  3. Safety: Enclosed in robust cabinets, these transformers are tamper-proof, reducing the risk of electrical hazards.


  4. Energy savings: High-quality transformers, such as those from Daelim, are designed to minimize energy losses, resulting in more efficient power distribution and cost savings.


  5. Integration with renewable energy: They can be integrated with renewable energy sources, facilitating the distribution of green energy.


  6. Reliability: Single-phase pad-mounted transformers are built to last, ensuring consistent power distribution with minimal downtime.

  7. Customization: Customized solutions ensure that the transformer meets the specific needs of an area or facility, optimizing efficiency.


  8. Reduced infrastructure: Underground power distribution systems using these transformers reduce the need for overhead lines, resulting in cleaner urban landscapes.


  9. Environmental impact: Efficient transformers reduce energy waste, helping to reduce the carbon footprint.


  10. Economic benefits: Efficient power distribution can support economic growth, as businesses and industries receive reliable power that ensures uninterrupted operation.

What are the advantages of using single-phase pad-mounted transformers in commercial buildings and industrial facilities?

The use of single-phase pad-mounted transformers in commercial and industrial environments offers countless advantages:

  1. Space efficiency: Their compact design ensures that they take up minimal space, making them ideal for commercial areas where real estate space is at a premium.


  2. Safety: Enclosed in tamper-proof cabinets, these transformers offer enhanced safety, reducing the risk of electrical mishaps in busy commercial areas.


  3. Constant power supply: They ensure a constant and reliable power supply, crucial for the smooth operation of commercial establishments and industries.


  4. Cost-effectiveness: By minimizing energy losses, these transformers can bring significant savings on electricity bills, a boon for businesses.


  5. Aesthetic appeal: For aesthetically-conscious commercial areas, subway transformers eliminate the need for unsightly overhead wires.


  6. Low maintenance: Robust design requires minimal maintenance, reducing operating costs for businesses.


  7. Customization: Companies like Daelim offer customized solutions, ensuring that the transformer aligns with the specific needs of a commercial building or industrial facility.


  8. Environmental benefits: Efficient transformers reduce energy consumption, aligning with the green initiatives and sustainability goals of many companies.


  9. Integration with modern technology: Modern transformers can be integrated with smart grids and renewable energy sources, making them suitable for the businesses of the future.


  10. Longer service life: High-quality transformers, manufactured to international standards, promise a long service life, ensuring that companies do not have to replace them frequently.

How do single-phase, self-supporting transformers meet international standards such as ANSI, IEC and IEEE?

El cumplimiento de las normas internacionales es primordial para garantizar la calidad, seguridad y fiabilidad de los transformadores:

  1. Quality assurance: Compliance with standards such as ANSI, IEC and IEEE guarantees the highest quality transformers, which have undergone rigorous testing.


  2. Safety protocols: These standards establish specific safety guidelines that transformers must meet, ensuring that they pose minimal risk during operation.


  3. Performance metrics: Compliance with these standards ensures that transformers operate optimally, meeting the parameters set by these international bodies.


  4. Interoperability: The standards ensure that transformers can seamlessly integrate with systems around the world, facilitating global business operations.


  5. Innovation: Adherence to standards often pushes manufacturers to innovate, leading to the development of advanced and efficient transformers.

  6. Consumer confidence: Products that meet recognized standards instill confidence in consumers, assuring them of the value of their purchase.


  7. Environmental standards: Many of these standards also include environmental guidelines, ensuring that processors are environmentally friendly.


  8. Regular audits: To maintain compliance, manufacturers like Daelim undergo regular audits that ensure their products consistently meet or exceed established standards.


  9. Training: Manufacturers invest in training their employees to understand and apply these standards, ensuring that all transformers meet the required guidelines.


  10. Feedback: These standards bodies often receive feedback from manufacturers, ensuring that standards evolve with technological advances.


Single phase pad mounted transformers are an excellent solution for a variety of electrical applications. They offer a range of benefits, including durability, compact size, and ease of installation. When selecting a transformer, it’s important to consider the specifications, dimensions, weight, and cost of the transformer to ensure that it meets your specific needs. With the right transformer, you can ensure reliable and efficient power for years to come.

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