What is the primary focus of the tests applied to galvanic isolators?

The primary focus of the tests applied to galvanic isolators is centered on ensuring electrical and mechanical integrity. This is crucial because galvanic isolators are designed to prevent unwanted galvanic currents from affecting the electrical systems of boats and other marine applications. Testing for electrical integrity involves confirming that the isolator effectively blocks DC currents while allowing AC currents to pass through when necessary. It ensures that the isolator maintains its function without degradation over time. Mechanical integrity testing validates that the isolator can withstand the physical stresses it might encounter in a marine environment, such as vibrations, impacts, or contact with moisture.

The other options, such as performance under normal operation, resistance to environmental factors, and compliance with safety regulations, while important, are secondary to the fundamental need for the isolator to maintain its expected electrical and mechanical functions. These aspects might be considered during the overall assessment of a galvanic isolator but are not the primary focus of testing.