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Automatic insulation resistance testing apparatus

United States Patent

6,907,363
June 14, 2005
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
An apparatus and method for automatic measurement of insulation resistances of a multi-conductor cable. In one embodiment of the invention, the apparatus comprises a power supply source, an input measuring means, an output measuring means, a plurality of input relay controlled contacts, a plurality of output relay controlled contacts, a relay controller and a computer. In another embodiment of the invention the apparatus comprises a power supply source, an input measuring means, an output measuring means, an input switching unit, an output switching unit and a control unit/data logger. Embodiments of the apparatus of the invention may also incorporate cable fire testing means. The apparatus and methods of the present invention use either voltage or current for input and output measured variables.
Wyant; Francis J. (Albuquerque, NM), Nowlen; Steven P. (Albuquerque, NM), Luker; Spencer M. (Cedar Crest, NM)
Sandia Corporation (Albuquerque, NM)
10/ 271,371
October 15, 2002
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The present invention was made under Contract DE-AC04-94AL85000 with the United States Department of Energy. The Government may have certain rights in the invention.