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Hi-pot test at 100V?

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cupoftea

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Today had to do Hi-Pot test on an offline Meanwell RSP-1500-27 (27V,56A) PSU with two paralleled 50V power diodes added to its output, obviously external to the RSP-1500-27 enclosure
The instruction said to do the Output-to-chassis hi-pot test "at 100V"
(The RSP-1500-27 is screwed into a metal outer chassis/enclosure which is earthed)
Firstly, just because they are 50V diodes, surely they woudlnt be damaged by 500V hi-pot test from output to chassis?
Also, we dont have a specific 100v hi-pot test kit. We do have a variable hi-pot tester which is AC output and can be set to 100VAC (or 100/[root(2)]). Unfortunately this doesnt have a settable timer, or a settable cut-off current....and its so old that theres no manual, so we dont know what is its cut-off current.

RSP-1500-27 PSU
 

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