Discuss zs readings before and after rcd. in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
and so the thread degenerates into ladies' underwear.Isn't this called RCD uplift? Where the RCD is affecting the reading
yes mine is the mft 1730 and mine is adding about .5/.6 ohms, just tried it at my house with a wylex rcd and getting about 0nly .1 ohm.I'll think you'll find that this will be case with MK RCD's... got caught out this myself. EFLI testing on the supply side would give similar value to that of Ze but Zs was nearly 1 ohm.. turns out that the RCD was adding excess of 0.70-0.80 ohms.
It's a combination of RCD and testers no trip circuitry on my mft1552.
True Zs results can be calculated by subtracting the reading of the RCD input from the outputs and then subtracting that result from your sub circuit Zs.
yes no trip on both sides. 0.28 incoming 0.78 outgoing.Did you test on the RCD side with 3 wire no trip?
Reply to zs readings before and after rcd. in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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