What is the best way to test an ESD Safe Wheel?

Technical Questions
#1

My team and I are designing a new assembly cart and we have 4 ESD Safe wheels on them but, we did not validate the wheels before installing them. I’ll be doing that testing today. I’m curious to know how others have done this testing. My idea was to isolate the wheel and do a point to point using alligator clips to have a secure connection.

Any suggestions or official testing methods?

#2

Zachariah,

ANSI/ESD STM4.1 has qualification test methods for mobile equipment. Below are some pictures showing the recommended ways to measure. If you are qualifying the carts for compliance to ANSI/ESD S20.20, I recommend purchasing STM4.1 from the ESDA website for more information.

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