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Electrostatic Discharge (ESD) question.

Electrostatic Discharge (ESD) question.

Electrostatic Discharge (ESD) question.


I inherited shock test equipment that is very crude, but the company has been using it for years.  The vibrator is fasten to a patio paver and in turn sits in a wooden box full of sand.  The wood, sand, and patio paver are insulators, can they generate a static charge; are they ESD save?  The vibrator is grounded, so I am not worried about "zaps", butI would rather be safe than sorry.

Your comments would be appreciated.

Thank you in advance.

Go Mechanical Engineering

RE: Electrostatic Discharge (ESD) question.

Well, at least in the aerospace world, we treat the wood as "static dissipative."  Since sand is a bunch of little rocks all touching eachother, and concrete/rocks are dissipative (the reason why grounding to concrete/earth works), I would guess those would be "dissipative" too, although I have no direct reference.  I know nothing of the other component.  Also, static dissipative just means it's not totally conductive, but if you have a ground attached to it, it will dissipate the surface charge.  Hope that helps.

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