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A few 30mA RCBO's that i have tested recently are tripping lower at x1 than they are at x5, e.g 13.1 x1 13.8 x5, I know both these results comply but im curious does any one know why the 1 times trip is lower than 5?
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Type A RCBO, Yes being tested at the DBAre they AC or Type A RCBOs ? Are you testing at the Distribution panel?
Sorry should have stated it was for job done in the south of ireland were they still record times 1 and 5 on the test sheetThis is within error of measurement or maybe the inductance adds a tiny bit that is usually cancelled out by the increased current . In any case we don’t test at 5 x any more.
Just to be pedantic I would suggest that we don't record the 5* test anymore, but aren't precluded from carrying it out. Although if it doesn't disconnect within 40mS @ 5 I delta n this may not necessarily be a failure.This is within error of measurement or maybe the inductance adds a tiny bit that is usually cancelled out by the increased current . In any case we don’t test at 5 x any more.
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