What AC current (RMS) needs to be measured through the isolator during testing?

The requirement to measure a specific amount of AC current (RMS) through the isolator during testing relates to the need for diagnostic purposes and ensuring the system operates within its design specifications. In this context, measuring 3 amps of AC current through the isolator is generally viewed as a standard parameter that ensures the isolator is functioning properly and can handle the expected load. This value is significant because testing with an appropriate current allows for a thorough assessment of the isolator's performance, evaluating its ability to isolate the circuit effectively, and ensuring that safety mechanisms function as intended.

Measuring too low a current could yield no useful data regarding loading conditions, while a significantly higher current may exceed the operational limits of the isolator, potentially leading to damage or failure during testing. Thus, testing at 3 amps represents a balance between being realistic in terms of operational load and ensuring the integrity and reliability of the system being tested.