Vacuum assisted electrical disconnect with dynamic shield

摘要

An electrical disconnect includes a housing having a recess defined therein extending from an opening toward a base. The disconnect also includes a vacuum envelope defined within the housing near the base; a fixed contact assembly including a fixed contact structured to be in electrical communication with a voltage source disposed partially within the vacuum envelope; and a movable contact assembly including a movable contact having a first end disposed within the vacuum envelope and a second end disposed in the recess near the base and movable between a closed position in electrical contact with the fixed contact and an open position spaced apart from the fixed contact a separation distance. The housing includes a dynamic shield electrically connected to the movable contact, the dynamic shield being disposed about the recess within the housing and extending from the base toward the opening thereof.

主权项

1. An electrical disconnect comprising:
a housing having a first end and an opposite second end, the housing including a recess defined therein extending from an opening disposed at or about the second end of the housing toward a base defined near the first end of the housing; a vacuum envelope defined within the housing about the first end; a fixed contact assembly including a fixed contact disposed partially within the vacuum envelope, the fixed contact assembly structured to be in electrical communication with a voltage source; and a movable contact assembly including a movable contact having a first end disposed within the vacuum envelope and an opposite second end disposed in the recess near the base thereof, the movable contact being movable between a closed position in electrical contact with the fixed contact and an open position spaced apart from the fixed contact a separation distance, wherein the housing comprises a dynamic shield electrically connected to the movable contact, the dynamic shield being disposed about the recess within the housing and extending from the base toward the opening thereof, and wherein the housing further comprises a number of cylindrical fins disposed concentrically about the opening of the recess and extending from the second end of the housing.