Voltage and Current Dectector Hard Hat Attachment

Jraef

Moderator
Staff member
Location
San Francisco Bay Area, CA, USA
Occupation
Electrical Engineer
I guess if you are working around MV or HV power lines it could be OK as a general safety aid. You have to be closer than 4ft from 2400V L-N for it to detect anything, that's already pretty close if it's a bare conductor. No mention of whether it would pick up voltage in a conduit or behind an enclosure door. If you were knowingly working that close to potentially live conductors, you would have wanted a hot stick tester on it before you got that close.
 

GoldDigger

Moderator
Staff member
The thread title says voltage and current detection. The video only mentions voltage detection. Current detection (unbalanced only) would be possible through conduit or equipment enclosures. Voltage detection would not.
 

myspark

Senior Member
Location
SCV Ca, USA
Occupation
Retired EE
The thread title says voltage and current detection. The video only mentions voltage detection. Current detection (unbalanced only) would be possible through conduit or equipment enclosures. Voltage detection would not.
Where there is voltage 30 KV and above there is this phenomenon called corona.

Not the six-pack variety.

Where there is corona there is UV/IR. These belong to the light spectrum not visible to humans.
Although short -time exposure may not be harmful—prolonged or sustained could be harmful—and they can be readily detected.
 

Besoeker3

Senior Member
Location
UK
While it's a neat bent on non contact testers, methinks most of us would not trust our lives w/them....~RJ~
That would be my take on the device.

The highest voltage kit I've worked on was 11kV for which we had a tester. A stick.
  1. Test the tester - it had a tester accessory for that.
  2. Check that the circuit to be worked on is dead.
  3. Retest the tester to verify that is still indicating correctly.
  4. Ground (earth) the circuit to be worked on.

No mention was made of how steps 1 and 3 would be carried out with the non-contact tester.
 
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