fluke 1653b efli readings

[stumas]

ive just purchesed a new fluke 1653b multi tester when taking a eath fault loop reaqding on loop no trip setting i get a differant readng to when i take a reading on the hi current setting is this meter faulty
can anyone help the readings i get on the same 32a ring socket are

notrip setting 0.64

hi current setting 0.50

as you can see on the nontrip setting is higher and woulld fail as max is 0.58

 

[Sintra]

Don't think you have a fault. I have done the same experiment with various meters and always get a higher reading when using the low current test.

It's because the no trip test uses a very short pulse and the RCD has significant inductance, so the observed figure is higher.