Main features of single-phase transformers:

1. Simple structure: Compared to three-phase transformers, single-phase transformers have a simpler design and lower manufacturing cost, making them suitable for small loads and household devices.

2. Wide application: They are widely used in household electrical equipment, power supply, communication devices, and some small industrial equipment.

3. Easy installation: Their compact size makes them easy to install, ideal for situations requiring a single-phase power supply.

4. Higher efficiency: Single-phase transformers typically have higher efficiency under small load conditions.