Voltage verification unit
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United States of America Patent
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Jan 15, 2008
Grant Date -
May 10, 2007
app pub date -
Sep 6, 2006
filing date -
Sep 8, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A voltage verification unit and method for determining the absence of potentially dangerous potentials within a power supply enclosure without Mode 2 work is disclosed. With this device and method, a qualified worker, following a relatively simple protocol that involves a function test (hot, cold, hot) of the voltage verification unit before Lock Out/Tag Out and, and once the Lock Out/Tag Out is completed, testing or 'trying' by simply reading a display on the voltage verification unit can be accomplished without exposure of the operator to the interior of the voltage supply enclosure. According to a preferred embodiment, the voltage verification unit includes test leads to allow diagnostics with other meters, without the necessity of accessing potentially dangerous bus bars or the like.
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