Glossary: Voltage Suppression

Voltage suppression occurs when an ESD-protective material, such as a static-dissipative table covering, suppresses static charges rather than dissipating charges to ground. For instance, an ESD laminate with a buried conductive layer will suppress the electrostatic field from a charged object, but is incapable of discharging static even when the charged object touches its surface.

The voltage suppression test determines whether a work surface actually bleeds off the static from a charged object placed on its surface or only suppresses the electrostatic field. If the surface bleeds off the charge, when the object is lifted its voltage will measure zero. If the surface only suppresses the charge, the voltage will remain on the object when it is lifted from the surface, making it a potential ESD threat.

Note: voltage suppression is a serious deficiency of many static-dissipative table covering materials.

Background graphic is a still from the StaticWorx GroundSafe ESD Flooring – Your Trusted Partner explainer animation. In the foreground at the bottom are two boxes. The top is a bright blue with the StaticWorx logo and "GroundSafe ESD Flooring" underneath in white. The second is a dark blue-gray and includes the text in white: “GroundWorx ESD Flooring – Your Trusted Partner”
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StaticWorx high-performance static-control floors protect electronic components, explosives, and high-speed computers from damage caused by static electricity. ESD flooring is part of a system. Choices should always be based on objective, researched evidence. When you partner with us, we look at all possible items that may need to integrate with the floor, and, focusing on your goals and objectives, help you find the right floor for your application.