Steve,
It's most likely static electricity. What you describe is very common at our power plants, on a dry day, when an operator places a finger on a meter while taking a reading.
BrianB
> On May 9, 2018, at 9:17 PM, Steve White <steve.white1@xxxxxxxxx> wrote:
>
> In the control cabinet for my SGTC I have a Simpson 0 - 300 volts AC Wide-View iron vane voltmeter measuring the voltage from the wall. I briefly powered up the cabinet for a few seconds to check some things and then switched it off. Then, with all power off, I placed my finger over the indicator pointer of the voltmeter and its movement tracked my finger movement through the clear plastic cover! After this strange behavior, the pointer settled at a position substantially above the zero voltage point. It settled at about 30 volts with no power applied. I noticed that as time went by, the pointer gradually settled back to its true zero voltage point. This took about 10 minutes. I have PFC capacitors but I had them switched out at the time. The only other energy storage components that I can think of are the capacitors in the EMI line filter bricks. I don't think it could be static electricity because I tried discharging my body and the pointer still followed my finger. None of
> the other voltmeters and ammeters in the control cabinet display this strange behavior. Does anyone know what is going on here?
>
> Steve
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