What is the required duration for each short circuit test applied to a galvanic isolator?

The required duration for each short circuit test applied to a galvanic isolator is at least one full cycle. This duration is essential because it allows the test to sufficiently evaluate the performance of the galvanic isolator under conditions that mimic actual service.

During a short circuit condition, the isolator must demonstrate its ability to interrupt the fault and protect the connected circuits. Testing for one full cycle ensures that the device operates within its specified parameters and can adequately respond to transient conditions without causing damage to the isolator or compromising the safety of the electrical system.

Options indicating shorter durations, such as ten seconds, would not provide adequate time to observe the isolator’s performance during a complete cycle of electrical waveform, potentially leading to incomplete or inconclusive test results. Similarly, durations beyond one full cycle, while they might allow for more extended observation, are not the minimum required by standards. Thus, testing for at least one full cycle precisely balances adequate assessment with operational practicality.