Electronics > Projects, Designs, and Technical Stuff
Clampmeters and voltage
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cs.dk:
I hope someone can shed light on this topic.
If I short a lab psu and measure the short circuit current, it will display it just fine. So down to almost 0V it is reading current fine.

However, i'm involved in a solar setup. Can I safely measure lets say 1500 VDC with ie. a Brymen BM089? I think the input rating is for the jacks, not the clamp.
Zero999:

--- Quote from: cs.dk on November 02, 2018, 10:54:38 am ---I hope someone can shed light on this topic.
If I short a lab psu and measure the short circuit current, it will display it just fine. So down to almost 0V it is reading current fine.

However, i'm involved in a solar setup. Can I safely measure lets say 1500 VDC with ie. a Brymen BM089? I think the input rating is for the jacks, not the clamp.

--- End quote ---
If the conductor is insulated, then the clamp has no voltage limit, which only applies to the voltage between an uninsulated conductor and earth. The cable could have 10kV on it with respect to earth and it would be perfectly safe to measure the current using a clamp meter only rated to 1.5kV, so long as the cable is adequately insulated for 10kV. However, if the cable is uninsulated, then the clamp meter needs to be rated for the full 10kV.

Quickly Googling for the specification of the BM089 shows it's only rated to 1000V, which I presume is both for the jack and clamp when used with an uninsulated conductor.
https://www.tme.eu/gb/details/bm089/meters-and-acdc-clamp-probes/brymen/
cs.dk:
Thanks. The conductors are insulated, so i'll try to get some measurements :)
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