Present the following observations:- The equipment does not pass the resistive voltage test when applied between the power circuit and the output circuit. After this test, it stopped working and could not be evaluated, impulse test, overload and short circuit. The sample must comply with IEC safety standard (eg, 60950-1, 60335-2-29, etc.). In this case the power supply failed the resistive voltage test under IEC60950-1. The supplier should know about the IEC standards