D
DomB
Chaps, day after tomorrow I need to do my first insulation test on a PV array.
It's roof mounted & class II, so the frame is not bonded.
I use a Megger Tester. Am I right in thinking I plug the whole string togethor then put one of the tester's probes into the DC positive plug and the other on the array's roof mounting or the building's earth and then do a 500V insulation test? Then do the same for the negative?
Thanks!
p.s. and to do a Polarity check I guess I just make sure the V is not negative when I put a tester between the DC cables?
p.p.s and to do an earth continuity - I guess that's 'Not Applicable' for a class II system!?
Many thanks!!
It's roof mounted & class II, so the frame is not bonded.
I use a Megger Tester. Am I right in thinking I plug the whole string togethor then put one of the tester's probes into the DC positive plug and the other on the array's roof mounting or the building's earth and then do a 500V insulation test? Then do the same for the negative?
Thanks!
p.s. and to do a Polarity check I guess I just make sure the V is not negative when I put a tester between the DC cables?
p.p.s and to do an earth continuity - I guess that's 'Not Applicable' for a class II system!?
Many thanks!!
Last edited by a moderator: