T
tom79bmth
Just out of interest what reading do you normally get when doing a ramp test on rcd or rcbo 30 ma
Thanks
Thanks
What are we talking when you got this result... were you ramp testing?
The ramp test is really only for faulting a circuit does the device operate with the required rcd testing and is your meter calibrated?
last one I did a few days back was 22Just out of interest what reading do you normally get when doing a ramp test on rcd or rcbo 30 ma
Thanks
Yes as Richard points out and I touched on too your looking to comply with a trip 'time' when your meter give out 0.5, 1, and x5 rated tripping current. The ramp test is for diagnostic purposes and subject to many factors like existing leakage etc... but dropping all the load off would not have decreased this value as any mA leakage on appliances would be an addition to the result on your meter.
Tripping occurs at 24mA on ramp with loads connected
Tripping occurs at 20mA on ramp without loads connected therefore background leakage due to appliances is 4mA
Im confused why your expressing a value that is not part of the test procedure, if you pass the .5/1/x5 test then the meter has created the correct leakage and the trip times are shown.
is it not the other way round?