Method and apparatus for testing filter/protector units for...

Details Method and apparatus for testing filter/protector units for... Method and apparatus for testing filter/protector units for...

2005-03-29

2005-03-29

Le, N. (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S522000, C324S544000

Reexamination Certificate

active

06873160

ABSTRACT:
Filter/protection units positioned along a fiber optic cable are tested. The fiber optic cable includes a metallic sheath surrounding the cable. A cable locating unit generates an electric signal. The metallic sheath conducts the electrical signal. The electric signal creates a voltage within the metallic sheath. The voltage level is below a specified flashover point or threshold of a normally operating filter/protector unit. As a result, any filter/protector units that are triggered by the electric signal are considered faulty.

REFERENCES:
patent: 4697096 (1987-09-01), Conrad et al.
patent: 5198775 (1993-03-01), Bussinger et al.
patent: 5721662 (1998-02-01), Glaser et al.
patent: 6049578 (2000-04-01), Senechal et al.

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