Ground testing method and apparatus

Details Ground testing method and apparatus Ground testing method and apparatus

2008-01-29

2008-01-29

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of ground fault indication

C324S509000

Reexamination Certificate

active

07323878

ABSTRACT:
The present invention is directed to a ground-current isolating circuit for providing a low voltage barrier between a service neutral conductor and an associated grounding system. The voltage barrier circuit comprises a first current unidirectional element and a second current unidirectional element connected in antiparallel. The unidirectional elements are preferably diodes having a characteristic threshold voltage. The current in a forward biased direction is blocked by the circuit until an applied forward biased voltage exceeds the threshold voltage. The present invention also is directed to a method of isolating a neutral conductor temporarily from an associated grounding system during testing of a structure grounding system. The method includes connecting a voltage barrier circuit in parallel with a conductor bonding the neutral conductor to the associated grounding system, then disconnecting the bonding conductor; conducting a test of the structure grounding system associated with the structure, and reconnecting the bonding conductor between the neutral conductor and grounding system.

REFERENCES:
patent: 2791728 (1957-05-01), Traugott
patent: 2895104 (1959-07-01), Hansen et al.
patent: 3141128 (1964-07-01), Behr
patent: 3569826 (1971-03-01), Burnett
patent: 3599179 (1971-08-01), Arnold
patent: 3666993 (1972-05-01), Legatti
patent: 3699392 (1972-10-01), Lee et al.
patent: 3737765 (1973-06-01), Lee et al.
patent: 3798540 (1974-03-01), Darden et al.
patent: 3810003 (1974-05-01), Portoulas
patent: 3976987 (1976-08-01), Anger
patent: 3978465 (1976-08-01), Goode
patent: 4011483 (1977-03-01), Meadows
patent: 4352058 (1982-09-01), Westra
patent: 4591941 (1986-05-01), Gruchalla et al.
patent: 4929887 (1990-05-01), Robitaille et al.
patent: 5051732 (1991-09-01), Robitaille
patent: 5525908 (1996-06-01), Brownell
patent: 5627414 (1997-05-01), Brown et al.
patent: 5646810 (1997-07-01), Funke
patent: 5933011 (1999-08-01), Atkins
patent: 6288917 (2001-09-01), Redburn et al.
patent: 6844736 (2005-01-01), Weems
patent: 2005/0013070 (2005-01-01), Haba Armero
patent: 9201944 (1992-02-01), None

Affiliated with

Also associated with

Rating

Ground testing method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ground testing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground testing method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2813197