What key parameters should be considered when selecting a power transformer?

When selecting a power transformer, the key parameters to consider include voltage rating and power capacity. The voltage rating is critical because it determines the operational range of the transformer, ensuring that it operates safely and efficiently within the electrical system. Each transformer is designed to handle specific voltages, and selecting one with the appropriate rating is essential to prevent insulation breakdown and ensure compatibility with the connected load.

Power capacity, often measured in kilovolt-amperes (kVA), indicates how much electrical power the transformer can handle without overheating or failing. It is vital to match the transformer's capacity with the expected load to maintain efficiency and reliability. Oversizing can result in wasted energy, while undersizing can lead to overheating and potential damage to both the transformer and connected equipment.

The other parameters, such as size, color, material, weight, shape, and design, are less critical in the selection process. They may impact installation or aesthetic considerations, but they do not directly affect the electrical performance and functionality of the transformer in the same way that voltage rating and power capacity do. Thus, for proper operation and efficiency, the main focus should remain on voltage rating and power capacity.