What is the secondary voltage of a distribution transformer with a primary voltage of 2400 volts and a primary current of 15 amps?

To determine the secondary voltage of a distribution transformer, you first need to understand the relationship between the primary and secondary voltages and currents, which is defined by the transformer turns ratio.

In this scenario, the primary voltage is 2400 volts. Distribution transformers often step down the voltage significantly for safe usage in residential or commercial applications.

For a transformer, the formula relating primary and secondary voltages is:

[ V_s = \left( \frac{N_s}{N_p} \right) \times V_p ]

where ( V_s ) is the secondary voltage, ( N_s ) is the number of turns in the secondary coil, ( N_p ) is the number of turns in the primary coil, and ( V_p ) is the primary voltage.

In common practice, for residential and commercial usages, a typical transformation ratio for a distribution transformer would yield secondary voltages around 120V or 240V. In many cases, the primary voltage of 2400 volts would yield a standard secondary voltage of 120 volts, which is very commonly utilized for household electrical systems.

Given the choice of 120 volts, it is a logical secondary voltage as it matches widely accepted standards for safe residential voltage levels