Single Phase Pad Mounted Transformer

 

Single-phase Pad-mounted Transformer is generally used in places where single-phase power is required for civil use, such as household appliances, etc., and its capacity is relatively smaller than a three-phase pad-mounted transformer.

 

 

JiangsuYawei transtormers have been successtuly exported to severa countries incuding the United Stotes, Canada, Panama, Venezuela, Uzbekistan,Australia,and Bulgaria.

 

We have sufficient production capacity to ensure that goods can be delivered on time. We have professional after-sales teams around the world, this ensures prompt trouble shooting and resolution of any issues you may encounter.

 

 

Whether you are a utlity company, transformer distributor, or builder, you can purchase JiangsuYawei's power transformer with confidence,knowing that you are investing in a reliable and reputabe product.Experience the efficiency and reliablity of JiangsuYawei Transtormer tailored to meet your specific needs.

 

 

 

●The altitude does not exceed 1500m

●Use the ambient temperature +40℃--20℃

●The annual average humidity does not exceed 90

●Both indoor and outdoor

 

 

●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.

 

Inside a pad mounted transformer, you'll typically find parts like the core, windings, insulation, bushings, cooling system, and the transformer body.

 

Core: The pad mounted transformer's core is highly made of laminated sheets of magnetic material, such as silicon steel. It provides a path for the magnetic flux and helps to transfer electrical energy from one circuit to another.

 

Windings: Pad mounted transformers frequently use both copper and aluminum as conductive materials, and each has advantages and things to keep in mind.

 

Insulation: Insulation is generally used to separate the windings and the core to prevent electrical arcing and short circuits. The insulation includes a variety of materials, such as paper, enamel, or resin.

 

Bushings: A pad mounted transformer's bushing creates an electrical connection between the interior components and the outer high-voltage or low-voltage electrical system. Bushings provide a mechanism to safely move electrical current and voltage into or out of the transformer in addition to providing electrical insulation and mechanical support.

 

Tap Changers: Tap changers provide the ability to modify the transformer's output voltage to compensate for the input voltage or to meet specific load requirements. Tap changers inside a pad mounted transformer can be manually operated, allowing for flexibility in voltage regulation.

 

 

Single-phase pad-mounted transformer are typically used in residential areas and small businesses.

 

Utilities: Single-phase pad mounted transformers are integral in distributing electricity from power plants to homes and businesses.

Data Centers: These transformers provide consistent power to data centers, ensuring that operations run smoothly.

Energy Storage: They help in efficient energy storage, particularly in renewable power plants.

Industrial Facilities: Industries rely on these transformers for their heavy machinery and equipment.

Commercial Buildings: They ensure that commercial spaces like malls and office buildings have a steady supply of power.

Renewable Power Plants: These transformers play a pivotal role in renewable energy sources like solar and wind farms.

Residential Areas: For neighborhoods and housing complexes, these transformers distribute electricity to individual homes.

 

 

Step 1. Area Considerations

Make sure there is enough fresh air and that there are no sources of ignition or corrosion nearby. Confirm the transformer's nameplate specifications (kVA, frequency, line voltage, and load voltage) are appropriate for the application.

Step 2. Mount the Transformer

Put the transformer in place carefully. Then, you should disable the mains power supply by using lockout/tagout procedures. Next is to remove the panel covering the wires.

Step 3. Adjust The Correct Tap Setting

After isolating each secondary tap, make any required adjustments to the primary taps. Before installing or removing any tap, you must remove the protective coating. It is necessary to clean the tap and coat it with an electrical compound before you can bolt the wire.

Step 4. Route Wires on The Holes

You can use the existing holes or drill to feed cables into the enclosure. Wireless ventilated devices must enter the device below the terminals and the coil.

Step 5. Ground the Transformer

Connecting the transformer is straightforward, provided you use the principal wiring diagram found on the label. Next, ensure that you ground the enclosure adequately under the National Electrical Code and other applicable standards.

Step 6. Energize The Transformer

Check to see if the secondary voltage is sufficient for the load as the power comes on. Then, inspect if you have shut off the main power using lockout/tagout procedures.

Step 7. Connect to Terminals

Ensure that you connect the load to the secondary terminals. Then replace the power supply's cover.

Step 8. Perform A Final Inspection

Once the transformer arrives at its final site, you must assemble and test it before powering it. Before turning on the electricity, ensure that you inform everyone working on the transformer. Remember that inside the transformer enclosure, all connection points are fatal voltage.

 

 

1. Which Country From And Which Standard Do You Require?

Currently, pad-mounted transformers are widely used in the Americas, especially in Canada and USA, but Canada and USA are according to different standards.

CSA standard is for Canada, ANSI/IEEE standard is for the USA, and both of these two standards have specific standards for pad-mounted transformers. For example, CSA std 227.4-06 and IEEE std C57.12.34-2015, are for three-phase pad-mounted transformers. The main difference between CSA std 227.4-06 and IEEE std C57.12.34-2015 include 1. HV bushing range 2. Indicator and 3. Barrier.

 

2. Which Type Of Pad-Mounted Transformer Are You Require?

The pad-mounted transformer has two types, one is loop feed pad-mounted transformer, and another is radial feed pad-mounted transformer. The main difference between loop feed and radial feed is the number of HV bushing, loop feed has 6 HV bushings, and radial feed has 3 HV bushings.

 

3. Material Of Pad-Mounted Transformer

As we all know, the basic configuration of a pad-mounted transformer is composed of tank, oil, winding, HV part, and LV part. Different materials will influence the price of the transformer. Like stainless steel tank is more expensive than mild steel tank, vegetable oil is more expensive than mineral oil, the aluminum winding will be cheaper than copper winding...etc.

 

4. What Are The Standard Accessories For Pad-Mounted Transformers?

The accessories of pad mounted transformer will also influence the price. The standard accessories usually include packing stand bracket, LV bushing, Pressure Relief Valve, Drain & Sample Valve, ground strap cooper, HV bushing insert, ground bar, nameplate, ELSP fuse, bayonet fuse, tap changer, oil level gauge, oil temperature indicator, pressure/vacuum gauge, bushing well, LB switch and pentahead bolt. Besides the above items, change to an optional accessory, and the price will change accordingly.

 

 

Performing regular maintenance on pad mounted transformers is essential to ensure their safe and reliable operation over time. We recommend doing visual inspectional on critical pad mounted transformers monthly and oil samples annually. Here are some general maintenance steps that can help to keep pad mounted transformers in good condition:

 

1. Inspection: Conduct regular visual inspections of the transformer and its surroundings, looking for signs of damage or wear. Check for signs of oil leaks or damage to the transformer's exterior and ensure that the transformer is free of debris.

 

2. Oil Level Check: Check the oil level in the transformer and top it up if necessary. Make sure to use the correct type of oil for the transformer.

 

3. Oil Level Check: Check the oil level in the transformer and top it up if necessary. Make sure to use the correct type of oil for the transformer.

 

4. Cleaning: Keep the transformer clean and free of dirt and debris. Use a soft cloth and mild detergent to clean the exterior of the transformer.

 

5. Electrical Testing: Conduct regular electrical tests on the transformer to ensure that it is functioning correctly. These tests should include insulation resistance, turns ratio, winding resistance, and dielectric strength tests, as well as load and no-load loss tests.

 

6. Replacement Of Worn Or Damaged Parts: If any parts of the transformer are found to be worn or damaged during inspections or testing, they should be replaced promptly to prevent further damage.

 

7. Infrared Testing: Using an infrared camera to detect hot spots on the surface of transformers while they are under load. Hot spots can indicate potential issues like loose connections, damaged windings, or insulation degradation.

 

 

 

 

 

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