A 240v motor would be tested at 500v, not 1000v Success, the megger is used to measure the integrity of insulation on mostly motor windings What should the ohms be going from ground to phase on a digital megger
Megger TM1600 Circuit Breaker Analyzer
For a good motor should it read around what (400megaohms)
When the motor is bad it should read 0 ohms to ground
You can damage this equipment or at a minimum get false readings Typically start with the lowest voltage your megger has, starting at 50, 100 or 250 vdc will minimize any chance of damaging equipment For trouble shooting single phase, i would megger line to ground, line too neutral, neutral to ground. Megger readings that do not stabilize, but fluctuate are indicative of moisture in or on the conductors and should be investigated
Sometimes this reading will continue to climb as the moisture evaporates due to the test voltage When meggering one must be careful with the voltage levels you are trying to prevent future electrical damage to. From what i've read here, it seems most like the fluke 1507/1589 The only knock on those flukes are their inability to do accurate pi/dar tests
Type in megger in the search function and you'll find all kinds of info.
I have looked through a bunch of posts regarding megger testing and not seeing what i am looking for I am looking for a “standard” that says this xx mω reading is a “pass” and this xx mω reading is a “fail” I am sure it is an ieee standard, but i do not know for sure I have a couple pages.
I've never seen anyone hipot 600v cables A megger is a megohmeter, measures insulation resistance A hipot tester basically works the same way, but measures leakage current If you see a fault with the megger, you will see a fault with the hipot
The hipot stresses the insulation weak points at higher voltage levels than the megger will
I don't think the hi pot will do anything for you.
