US 5,977,492 A · Dual power source retrofit kit with power source selection interlock assembly

Abstract

A dual power source retrofit kit for a single power source service entrance panel. The retrofit kit is a field installable kit for retrofitting a single power source service entrance panel to a dual power source service entrance panel. The kit includes a power source selection assembly and a mounting bracket for attaching to the service entrance panel. A deadfront trim plate having a cut-out to accept the power source selection assembly is also supplied to replace the old trim plate of the service entrance panel. The power source selection assembly permits only the selected one of the primary or auxiliary power sources to provide power to the service entrance panel at any one time. The power source selection assembly is also designed such that overload protection devices/disconnect switches for both the primary power source and the auxiliary power source must be in the OFF position before switching from one power source to the other is permitted.

Claims18

Dependent claims

A dual power source retrofit kit for a single power source service entrance panel having a center mounted main breaker providing primary power to the service entrance panel, said retrofit kit comprising:

an auxiliary main breaker for connecting the service entrance panel to an auxiliary power source;
a mounting bracket adapted to be attached to the service entrance panel;
a hold-down plate attached to said mounting bracket, said hold-down plate generally encircling the center mounted main breaker and a portion of said auxiliary main breaker;
a power source selector plate being slidably attached to said hold-down plate such that said power source selector plate is movable between a first position in which the center mounted main breaker is selectively ON and said auxiliary main breaker is OFF and a second position in which the center mounted main breaker is OFF and said auxiliary main breaker is selectively ON.

1 more element

A dual power source retrofit kit for a single power source service entrance panel having a center mounted main breaker for providing primary power to the service entrance panel, said retrofit kit comprising:

an auxiliary main breaker for connecting the service entrance panel to an auxiliary power source;
a power source selector assembly attached to the service entrance panel such that said power source selector assembly secures both the center mounted main breaker and said auxiliary main breaker in the service entrance panel, said power source selector assembly having a power source selector plate being slidably movable between a first position in which the center mounted main breaker is selectively ON and said auxiliary main breaker is OFF and a second position in which the center mounted main breaker is OFF and said auxiliary main breaker is selectively ON.

Dependencies are inferred from the claim text.

Dual power source retrofit kit with power source selection interlock assembly

Life of this patent

Dual power source retrofit kit with power source selection interlock assembly

Life of this patent

Abstract

Claims18