Protective devices for electrical equipment and components

Details Protective devices for electrical equipment and components Protective devices for electrical equipment and components

1986-07-31

1988-07-12

Scott, J. R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Capacitor protection

361272, H01G 111

Patent

active

047574143

ABSTRACT:
A capacitor is composed of an external casing with an internal polyurethane encapsulation containing a polypropylene layered metallized film type capacitor element. Inside the casing is a component in the form of a frangible substrate having at least one conductive track thereon. The track establishes connection between a terminal on the casing and the capacitor element. The substrate is either mounted directly to the inside of the casing or is contained in a cartridge. The substrate is of brittle nature and distorts should pressure increase in the casing to shatter to break the track and isolate the terminal from the capacitor element.

REFERENCES:
patent: 4059848 (1977-11-01), Kort et al.
patent: 4586107 (1986-04-01), Price
patent: 4633365 (1986-12-01), Stockman
patent: 4639827 (1987-01-01), Strange et al.
patent: 4639828 (1987-01-01), Strange et al.

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