Automated Handling Equipment (AHE)
|Publication Date:||1 January 2016|
This standard practice covers resistance-to-ground
Two methods are described to measure sources of charge.
One method measures charge indirectly by measuring the voltage or field associated with the charge.
The second method directly measures the voltage induced on ESDS items.
In particular, it establishes test procedures for:
• the measurement of DC electrical resistance between machine components of AHE and the equipment grounding conductor (EGC). See Annex A.
• testing AHE to determine whether charge is being generated on devices as they move through the equipment.
• reporting the correlation between measured voltages and known test voltages as they apply to AHE. (Charge measuring devices are not addressed in this document.)
Grounding methods and materials specified herein may or may not provide adequate grounding for conditions other than steady state DC. Reactance considerations at any frequency are beyond the scope of this document. In addition, this standard practice does not determine the effectiveness of any grounding method for reducing electromagnetic interference (EMI). Explosive, ordnance, or flammable materials handling considerations are also excluded from this standard practice.
This standard practice provides test procedures for evaluating the electrostatic environment associated with AHE. This document provides testing and data reporting procedures for the evaluation of ESD ground integrity in AHE and for the evaluation of charge generation and accumulation on devices in AHE. These methods evaluate newly installed and existing equipment by verifying the equipment's existing ground paths and by determining if charge on ESD-sensitive devices (ESDS) can be detected.