Apparatus for and method of protecting the safe side wiring...

Details Apparatus for and method of protecting the safe side wiring... Apparatus for and method of protecting the safe side wiring...

2006-02-28

2006-02-28

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C174S034000

Reexamination Certificate

active

07006339

ABSTRACT:
A method of protecting safe side wiring of a protective energy barrier against transferring fault energy into a potentially explosive environment comprises the steps of: enclosing the safe side wiring with at least one layer of shielding completely along the length thereof, the at least one layer of shielding capable of conducting the fault energy; connecting the safe side wiring at one end to circuitry of the protective energy barrier through a first connector having a housing which completely surrounds the safe side wiring prior to entering the protective energy barrier and is capable of conducting the fault energy; connecting the at least one layer of shielding of the safe side wiring to the housing of the first connector to conduct fault energy therebetween; connecting the safe side wiring at another end to circuitry within the potentially explosive environment through a second connector having a housing which completely surrounds the safe side wiring prior to entering the potentially explosive environment and is capable of conducting the fault energy; connecting the at least one layer of shielding of the safe side wiring to the housing of the second connector to conduct fault energy therebetween; and connecting the housings of the first and second connectors to structures capable of dissipating the fault energy.

REFERENCES:
patent: 3178503 (1965-04-01), Bell et al.
patent: 4705915 (1987-11-01), Van Brunt et al.
patent: 6141194 (2000-10-01), Maier
patent: 6846201 (2005-01-01), Lazaro, Jr.

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