Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-03-14
1991-10-01
Thompson, Gregory D.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361356, 361361, H02B 120
Patent
active
050539191
ABSTRACT:
Adding "plug in" surge protective devices, particularly in loadcenters already installed and in use, reduces the number of "stab spaces" available for circuit breakers. A breaker may be combined with a surgeprotector, both connected in parallel to a "stab" on the load center bus, or having a common bus contact within the combination breaker/protector, is thus both desirable and frequently necessary. The apparatus provides greater flexibility of location for a "plug in" surge protector in a loadcenter by making the surge protector adaptable for mounting in single "thick" or "thin" breaker spaces, and for combining a "thin" breaker with a "thin" surge protector for use within a single "thick" breaker space in the loadcenter. The invention provides a method for separating a defective breaker or surge protector from the combination and for easy replacement of the defective element. Surge protectors may thus be added to the loadcenter, one for each bus it is desired to protect, without requiring additional "stab spaces."
REFERENCES:
patent: 3134051 (1964-05-01), Lyon
patent: 3403301 (1968-09-01), Mrowka et al.
patent: 4181924 (1980-01-01), Thomas et al.
patent: 4642733 (1987-02-01), Schacht
patent: 4646199 (1987-02-01), M'Sadoques et al.
patent: 4884047 (1989-11-01), Baginski et al.
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