What is the primary use of a constant current transformer?

The primary use of a constant current transformer is in series street lighting applications. In these systems, a consistent current flow is essential to ensure that all lamps operate uniformly, avoiding variations in brightness that could lead to inefficient lighting or uneven illumination along the street. Constant current transformers regulate the electricity supplied to the streetlights, adjusting to variations in load while maintaining a steady current output. This is particularly important in street lighting setups where the lights are connected in series, meaning that the same level of current flows through all lights. This regulation helps to enhance the lifespan of the lighting equipment and improves overall efficiency.

In contrast, other applications like household lighting circuits tend to operate on standard voltage without the same necessity for constant current regulation. Industrial power supplies usually require different specifications concerning voltage and power capacity, and while battery charging systems benefit from controlled current, their designs are more often based around voltage regulation rather than constant current. Thus, the distinct requirements of street lighting make constant current transformers ideal for that specific use.