What is the purpose of testing a galvanic isolator according to established procedures?

Testing a galvanic isolator serves primarily to verify its integrity. The galvanic isolator plays a crucial role in preventing stray current from flowing between the vessel and the shore power system, thus protecting against galvanic corrosion. It does this by providing a barrier that allows AC power to pass while blocking DC current that can cause corrosion.

When a galvanic isolator is tested, technicians look for signs of any faults or degradation that could impede its functionality. This includes checking that electrical connections and components are in good condition and capable of performing their intended purpose without the risk of failure. If the isolator is compromised, the protective effects it offers would be lost, potentially leading to costly damage to the vessel's hull or other metallic components. Hence, ensuring the integrity of the galvanic isolator is critical for marine systems.

While compatibility, efficiency, and performance are important aspects to consider in the overall context of electrical systems, the direct goal of testing a galvanic isolator focuses on confirming that it is functioning properly and securely, preventing corrosion-related issues.