IEC 61010-1 Dielectric strength test of inner power supply

EMengineer

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Hi,

I would like to ask about the procedure of dielectric strength test. We have the equipment with power supply which generates voltage up to 4kV and its output "-" is connected to ground. Although equipment does not have any outputs and is supply via mains (230 VAC). I wonder which parts should be tested - is it enough to test primary (230VAC) / earthed enclosure? Or is it necessary to test transformer (4 kV) between its input and output seperately? Maybe I have missed something else and there is more testing to be done?
Thank you for any information.
 
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