| 摘要 |
A circuit breaker, or transformer, or insulated bus for use with AC voltages greater than 30 kilovolts and AC currents greater than 400 amperes includes an elongated bushing made from electrically insulating material and having first and second ends. The first end of the bushing is coupled to a main enclosure of the circuit breaker, or transformer, or insulated bus and a terminal pad is coupled to the second end of the bushing. A conductor is disposed in an internal cavity of the bushing in spaced relation to an internal wall of the bushing that defines the internal cavity. The conductor includes first and second segments. A first end of the first segment is electrically connected to a contact of the circuit breaker, or transformer, or insulated bus and a first end of the second segment is electrically connected to the terminal pad. Second ends of the first and second segments are coupled together with a biasing element interposed between the second ends of the first and second segments. The biasing element is operative for biasing the first end of the first segment toward the contact and for biasing the first end of the second segment toward the one terminal pad. |
| 主权项 |
1. A circuit breaker designed for use with AC voltages greater than 30 kilovolts and AC currents greater than 400 amperes, the circuit breaker comprising:
a main enclosure housing an interrupter that is electrically insulated from the main enclosure, wherein the interrupter is switchable between a closed state where first and second contacts of the interrupter are electrically connected defining a conductive path for current to flow between the first and second contacts and an open state where the first and second contacts of the interrupter are electrically isolated from each other, and vice versa; first and second electrically insulating bushings having proximal ends coupled to the main enclosure; first and second conductors disposed inside of the first and second bushings, wherein proximal ends of the first and second conductors are electrically connected to the first and second contacts of the interrupter defining a conductive path for current to flow between the first and second contacts and the first and second conductors, respectively; and first and second terminal pads coupled between distal ends of the first and second bushings and distal ends of the first and second conductors disposed inside of the first and second bushings, respectively, wherein:
at least one conductor includes first and second segments;a first end of the first segment is electrically connected to one of the contacts of the interrupter;a first end of the second segment is electrically connected to one of the terminal pads;a second end of the first segment is coupled to a second end of the second segment; anda biasing element is interposed between the second ends of the first and second segments, wherein the biasing element is operative for biasing the first end of the first segment toward the contact of the interrupter and for biasing the first end of the second segment toward the one terminal pad, wherein the biasing element includes a Belleville washer (a coned-disc spring, a conical spring washer, a disc spring, a Belleville spring, or a cupped spring washer) or a coiled spring. |
