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Systems and methods for stray voltage detection

  • US 8,599,031 B2
  • Filed: 11/16/2010
  • Issued: 12/03/2013
  • Est. Priority Date: 03/30/2007
  • Status: Active Grant
First Claim
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1. A system for detecting stray voltage in a conductive object, comprisinga pick-up element separated from the conductive object and capable of detecting an electric field from the conductive object,electrical circuitry electrically connected to the pick-up element capable of determining a voltage level corresponding to the electric field detected by the pick-up element, wherein the electrical circuitry generates, based on a comparison of the determined voltage level relative to a reference voltage level, an indicator signal representative of whether stray voltage is present in the conductive object,a housing for enclosing the electrical circuitry,a support attached to the housing for mounting the housing on or near the conductive object such that the pick-up element remains separated from the conductive object, andan indicator for indicating to a user of the system, based on the indicator signal, whether stray voltage is present in the conductive object, wherein the indicator comprises a visual indicator for visually indicating to the user whether stray voltage is present in the conductive object, the visual indicator comprising a first externally visible light which displays a first color when on and a second externally visible light which displays a second color, different from the first color, when on, the first externally visible light turning on when indicating a presence of stray voltage in the conductive object and the second externally visible light turning on when indicating an absence of stray voltage in the conductive object.

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