Megger LTW325

[milliamp]

Do any of you guys use the Megger 325 loop tester on a regular basis?

Has anybody noticed any major difference in the ELI when obtaining the Zref (same reference point) for a second or third set of tests?

I was using a new meter recently and found the Zref was not consistent.
I appreciate the calculation is based on the value at the start of the circuit and the value at the other end but I would have expected the Zref to be the same(ish) as first reference measurement.

 

[ban-all-sheds]

Are you leaving it to cool down between tests?

 

[milliamp]

Yes BAS, plenty of time.
As it is a new piece of kit to me, I was doing a few tests, then comparing the results with my old multifunction and back to the 325.

The results were comparable but just seemed to start from a different base value each time I did the Zref bit.