What is the maximum allowable voltage drop at 100% of a galvanic isolator's rated ampacity?

The maximum allowable voltage drop for a galvanic isolator at its rated ampacity is set at 2.5 volts. This specification is rooted in the need to ensure that the isolator can effectively protect the electrical system from galvanic corrosion while maintaining a reasonable level of voltage for the connected systems.

A galvanic isolator is a crucial component in a marine electrical system, designed to prevent unwanted current flow that can lead to corrosion, particularly in the presence of submerged metal components. The effectiveness of the isolator depends significantly on its capacity to function without excessive voltage drop. If the voltage drop exceeds 2.5 volts, it may affect the performance of connected devices or systems, leading to inadequate protection against galvanic corrosion.

Maintaining the voltage drop within this specific limit ensures that the galvanic isolator operates efficiently while preserving the integrity of the electrical system. A drop that is too low may compromise electrical performance, making the rated values important for both operational efficiency and the longevity of maritime equipment.