What does the term 'step-down lighting transformer' refer to in ship lighting systems?

The term 'step-down lighting transformer' in ship lighting systems specifically refers to a device that reduces voltage for lighting purposes. In many applications, including marine environments, the electrical systems operate at higher voltages. However, the lighting systems typically require lower voltages for safety, efficiency, and appropriate functionality.

A step-down transformer takes in the higher input voltage and reduces it to the lower voltage needed for safe operation of lighting fixtures. This is crucial in ensuring that the lighting systems can operate effectively without risking damage to the fixtures or compromising safety for crew and passengers onboard.

In the context of this question, the other options do not align with the function of a step-down transformer. A device that increases voltage would be called a step-up transformer. A device that converts AC to DC is a rectifier, which serves a different purpose entirely. Lastly, a monitoring system for electrical currents relates to tracking and managing electrical flow, not adjusting voltage levels.