Establishing a ground connection on a portable resistance test unit

[switchguy]

I recently purchased a Megger DLRO200 low resistance ohmmeter. Unfortunately the unit must be plugged into a 120 VAC source which is not convenient in our manufacturing facility. We purchased a pure sine wave inverter (300 W), battery charger and 12 V battery in hopes of converting to a self contained unit we could roll around on a cart. The problem we are facing is that the DRLO performs a test to verify a ground connection. The output on the inverter has a ground prong but aparrently not adequate for the DRLO to pass the test. I'm looking for any suggestions on how to get the DRLO into thinking it has a ground connection.

Thanks in advance,

 

[bklauba]

I would ask Megger:

http://www.avointl.com/us/products/ProductDetailsBySubGroup.php?PSGC=P701&BS=P

is there website, and contact your most local office.

BK

 

[VEBill]

Are you looking for a 'portable ground' ?!?

 

[nbucska]

what do you want to measire with the unit?


Plesae read FAQ240-1032
My WEB: <

http://geocities.com/nbucska/>

 

[ScottyUK]

Low resistances?

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Sometimes I only open my mouth to swap feet...

 

[switchguy]

After getting to the right person at Megger I found out that I would have to establish a ground through the auxiliary ground terminals of the unit. A bit on an inconvenience but it will work.The ground connection is simply a precaution to assure that the circuit being tested is safe to test.

Thanks to all for their posts