In the AC Conductivity Test, the galvanic isolator should be tested at what percentage of rated voltage and current?

In the AC Conductivity Test, testing the galvanic isolator at 100% of its rated voltage and current is crucial for determining its performance and integrity under full operating conditions. This percentage ensures that the test accurately reflects how the isolator will behave in real-world scenarios where it must manage all expected electrical loads without compromising safety or functionality.

Conducting the test at the full rated values allows for a thorough assessment of the isolator's ability to handle potential fault conditions and maintain the necessary isolation level between the AC system and the DC system. It's essential to verify the isolator's performance accurately to ensure that it will protect against galvanic corrosion and not allow unwanted electrical current to pass through when it shouldn't.

Lower percentages, such as 75% or 90%, may not provide sufficient data on how the isolator will perform under standard operating conditions, potentially leading to undetected issues that could affect system performance. Testing at higher than rated voltage and current, like 125%, could risk damage to the isolator, providing skewed or irrelevant results, as it may not be designed to handle such stresses. Thus, testing at 100% gives the most reliable indicators of function and safety.