The single-phase transformer has a simple structure, small size, low loss, mainly due to small iron loss, and is suitable for application and promotion in low-voltage distribution networks with low load density.
Compared with a three-phase transformer, a single-phase transformer of the same capacity uses 20% less iron and 10% less copper(Three Phase to Single Phase Power Transformer). Especially when the wound core structure is used, the no-load loss of the transformer can be reduced by more than 15%, which will enable the manufacture of single-phase transformers Cost and use cost are reduced at the same time, so as to obtain the best life cycle cost.
Using a single-phase power supply system in the power grid can save wires 33% to 63%. Calculated by economic current density, it can save wire weight by 42%. Calculated by mechanical strength, it can reduce wire consumption by 66%. Therefore, it can reduce the cost of the entire transmission line. Construction Investment.
Due to its simple structure, single-phase transformers are suitable for mass modern production, which is beneficial to improve product quality and efficiency. Due to the lightweight of the single-phase transformer, it can be flexibly installed on the pole for use, which is convenient to go deep into the load center, step down the power supply nearby, and improve the power supply quality.
Generally, single-phase transformers supply power in a small area, and the fault spread is small, which helps to improve the reliability of power supply(The main purpose of the transformer). At the same time, because the single-phase transformer is light in weight, easy to install and maintain, and flexible to use, it can be used in single-phase or three-phase transformers.
The cost of smaller transformer capacity The construction of a single-phase power supply in light-loaded areas can reduce construction investment.