Application and advantages and disadvantages of single-phase transformer
2023-01-09 11:04 | By: ZTELEC | 120click
A single-phase transformer is a transformer in which both the primary winding and the secondary winding are single-phase windings.
Single Phase Transformer Applications:
Single phase transformers are usually used for residential needs. Because they convert high voltage to low voltage, like step-down transformers, they are best suited for residential and office needs. Because of its simple structure, small size and low loss, mainly due to small iron loss, it is suitable for application and promotion in low-voltage distribution networks with low load density.
Single-phase transformers are often used for residential needs. Because they convert high voltage to low voltage, like step-down transformers, they are best suited for residential and office needs. Because of its simple structure, small size and low loss, mainly small iron loss, it is suitable for application and promotion in low-voltage distribution networks with small load density.
Advantages of single-phase transformers:
1. Use less material
Single-phase transformers with the same capacity use 20% less iron than three-phase transformers. Especially when the wound core structure is adopted, the no-load loss of the transformer can be reduced by more than 15%, which will reduce the manufacturing cost and use cost of the single-phase transformer at the same time, so as to obtain the best life cycle cost.
2. Low line investment
Using a single-phase power supply system in the power grid can save 33% to 63% of wires. Calculated according to economic current density, it can save 42% of wire weight. Calculated according to mechanical strength, it can reduce wire consumption by 66%. Therefore, the construction investment of the entire transmission line can be reduced. This is very meaningful in terms of street lighting and residential electricity consumption in vast rural areas and towns.
3. Conducive to modern production
Due to its simple structure, single-phase transformers are suitable for large-scale modern production, which is conducive to improving product quality and efficiency.
4. Low installation requirements
The single-phase transformer is light in weight and can be flexibly installed on the pole for use. It is convenient to go deep into the load center, step down the power supply nearby, and improve the quality of power supply.
5. High security
Generally, single-phase transformers supply power in a small area, and the affected area of faults is small, which is conducive to improving the reliability of power supply.
6. Flexible use
Because single-phase transformers are light in weight and easy to install and maintain, they can be used in single-phase or three-phase transformers.
7. In most cases, single-phase transformers do not require a cooling system.
Disadvantages of single-phase transformers:
Due to the single voltage, single-phase transformers can only be used in lighting or small motors, and the scope of application is limited.
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