ahtchw：
Normally,apply1.5kvtoprimaryandprotectionground,andapply3kvAC(or4242VDC)toprimaryandsecondary.Youneedchecktheclearanceorcreepagebetweenprimary(L&Nshort)andprotectiongroundshouldbemorethan3mm,andtheclearanceorcreepagebetrweenprimary(L&Nshort)andsecondary(alloutputshort)shouldbemorethan6mm.4.5KvisACorDC?