Hello everyone,
I just purchased a used Fluke 1587 and I'm not sure about the insulation tester capability. How do I check to see if it's working properly?
I've watched the youtube video that Martin posted, T4D #81 - Insulation testing...what's it all about!?
http://youtu.be/epYqKiXejHU Unfortunately I could not make out whether regular leads were used or the designated insulation 'test button' lead in the 'insulation' ports.
I'm testing the insulation on an under-floor heating system that's just been installed and the wires covered with thinset - now dry. It's rated for 26ohm. Draws 554w and 120v but not yet connected.
There are two black wires one of which is covered with yellow tape and there's a green ground wire. Manufacturer recommends using 1000v to test the heating element wire insulation which I've tried by placing the leads on the black wires but I'm only getting 1vdc and no other voltage reading in the upper display at any voltage setting. Continuity is ok with a steady beep & resistance checks in at 26ohm.
Without the leads connected at 1000v setting meter reads 2.2 Gohm in upper display and 1054Vdc in lower.
Am I doing something wrong? Faulty meter?
p.s. I don't have alligators so I'm firmly touching the leads to the heating element wires.
Any help appreciated.
Cheers
