Contact Resistance Test
Contact Resistance Test
(OP)
I have to do a contact resistance test on a bus we have installed. The meter I have is a DRM-100 made by Adwel. Does anyone have any advice, tips, tricks, dos or don’ts? Sorry I’m so vague but this is the best I can do with the nature of the customer.
Thanks
Thanks






RE: Contact Resistance Test
You should have a 100A output for bus connections, and you simply compare the phases to each other and make sure they are within 5% of each other. Bus connections may also be checked with a calibrated torque wrench or a IR scan under load.
RE: Contact Resistance Test
regards
RE: Contact Resistance Test
RE: Contact Resistance Test
It may be helpful to note that, for accuracy’s sake, milliohm and microohm measurements are made using 4 leads {a Kelvin measurement}. The two current connections are made “outside” of the potential points of contact, while the two potential leads are connected (or “spiked”) exactly at the measurement point of interest.
RE: Contact Resistance Test