METHOD AND APPARATUS FOR MOUNTING VAPOR SHIELD IN VACUUM INTERRUPTER AND VACUUM INTERRUPTER INCORPORATING SAME

摘要

A vacuum interrupter which comprises a single piece ceramic tube having end members secured to each end thereof to form therewith a vacuum envelope, a fixed contact mounted on a fixed electrode extending through one end member,a moveable contact mounted on a moveable electrode extending through the other end member and axially reciprocating into and out of contact with the fixed contact, a tubular shield inside the ceramic tube and surrounding the fixed contact and moveable contact, characterised in that a shield mount comprises a split ring which is installed in a circumferential groove in an inner surface of said ceramic tube and projects radially inwards into said vacuum envelope, a connection connecting said tubular shield to said split ring.