Wednesday, February 5, 2020

Major Key Factors to Keep in Mind While Choosing Power Transformer


Making a buying decision for a power transformer can be complicated. You may trust the statements of the dealer or take your informed stand. However, to consciously select the ideal configuration, you need to have some basic knowledge of transformer concepts. This helps you make the best bargain from an electrical transformer manufacturer of your choice.

This post highlights the major key factors that matter when selecting the best power transformer.

1) Number of Phases

Single or Three-phase: the type of transformer you need would be verbalized by the equipment type for which it is supposed. Usually, single-phase transformers are used for small-sized equipment utilized in households. Three-Phase provides to large industries where the load is higher. The power transformer manufacturer mentions the phase and type of equipment with which the transformer is compatible with its brochure.

2) Voltage Consideration

The primary and secondary voltages of the transformer transmit to the input and output voltage requests for your equipment. Incoming power supply defines these voltages.

3) Transformer Frequency

Power supply to your facility needs to be factored in for considering the transformer’s frequency. Received and output frequencies may vary in some occurrences. A frequency converter can be accepted alongside the transformer to alter the output. Usually, imported equipment has varying frequency requirements compared to local products.

4) kVA Rating of The Transformer

Your purchasing decision must be influenced by the maximum load you guess the transformer to be compatible with. kVA (kilo Volt-Ampere) rating of the transformer is a sign of the size and nature of electrical load the transformer is adept at a stable. If you are eager to custom transformer manufacturing to suit the power needs of your equipment, you can state the kVA rating to the manufacturer.
Accordingly, the voltage on the primary and secondary windings as well as current capacity may be modified by the electrical transformer manufacturer. Always keep in view the maximum load that is required to be handled by the transformer.

5) Objective of Transformer

Another key factor that must be kept in mind is the purpose of the transformer. Transformers can be used for a variety of causes. Your choice should be based on the outcome i.e. whether it is to be installed for isolation, for completing the K factor or to serve as an autotransformer.

6) Setting of the Space where Transformer is to be installed.


Power transformer’s terms would vary based on the atmosphere where you import to use it. If your transformer is to be used in an open space uncovered to the weather elements, you need to edict oil-cooled or fluid-filled ones. This would save the metal windings from the dangerous impact of weather.
The Tradition transformer manufacturing process also takes into account the ambient temperature. The temperature of the space where a transformer would function would be factored in during the design process.
If the transformer is meant to be used in hazardous space, its specifications should fulfill the stipulations laid down by regulating governmental authority.

7) Space Considerations

Usually, power transformers are manufactured as per pre-defined main sizes. However, it is not a restriction if you are running short of installation space. You can specify your requirements to the electrical transformer manufacturer to get it designed for installation in space available with you. This simplifies safe and easy lifting and gathering of transformer components.

8) Other Factors to keep in Mind

You need to factor in the way the transformer is to be designed. Hence, the power transformer manufacturer would design the wiring. This would also ensure easy connections with other transformers in delta, star and other interconnections. Preservation methods, i.e. vacuum cooling, oil cooling, and other ways should also be considered. Choose sensibly, and you would reap the highest return on investment.