What is the maximum allowable exterior surface temperature for the galvanic isolator and its status monitor?

The maximum allowable exterior surface temperature for a galvanic isolator and its status monitor is indeed 90°C. This specification is critical in ensuring the safety and reliability of electrical components installed in marine environments.

Galvanic isolators help prevent galvanic corrosion in vessels by isolating the boat's electrical system from the shore power ground connection. Maintaining a limit on the exterior surface temperature is necessary because excessive heat can indicate overloading, potential failure, or degraded insulation, which could lead to electrical hazards or fires.

The given maximum of 90°C is generally considered a safe upper limit, allowing components to function efficiently while reducing the risk of overheating. This reflects a recognized standard for components used in marine electrical systems, taking into account factors like ambient temperature and the operating environment.

Additionally, if the allowable temperature were set higher than this standard, it could compromise safety, as higher temperatures can lead to many issues, including melting or damaging of materials and increased risk of failure.