Device for switching in a resistance when a circuit breaker closes a circuit
AssigneeSociete Anonyme dite: Delle-Alsthom
InventorsDoan Pham Van, Dante Nicoloso
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Abstract
The invention relates to a resistance switch-in device for switching in only when a circuit breaker closes, said switch-in device including a moving arcing contact in an interrupter chamber. The device is characterized in that the switch-in contacts (2 and 3, 32 and 33) are disposed in the interrupter chamber (1) of the circuit breaker and that since at least one (2,32,33) of said switch-in contacts is a moving contact, it moves on a path parallel to that of the moving arcing contact (5). The invention applies in particular to connecting a load to long-distance high-tension circuits that are unloaded.
Claims11
A highly compact resistance switch-in device for switching in a resistance during closing but not during opening of a circuit breaker, said circuit breaker comprising an elongated cylindrical casing of insulating material defining an interrupter chamber, said switch-in device comprising a set of fixed concentric contacts within said cylindrical casing including firstly a main stationary contact, secondly a switch-in contact, and thirdly an arcing contact, a set of movable contacts including firstly a movable main contact, secondly a movable switch-in contact, and thirdly a movable arcing contact, means for mounting said sets in end-to-end relatively movable position axially disposed within said casing, and said resistance being disposed in said interrupter chamber in axial end-to-end connection to one of said fixed contacts remote from said movable set of contacts.
Dependencies are inferred from the claim text.