Circuit-breaker pole part with a heat transfer shield
AssigneeABB Technology AG
InventorsChristian Reuber, Dietmar Gentsch
Life of this patent
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Abstract
A pole part of a circuit-breaker arrangement having an insulation housing for accommodating a vacuum interrupter insert containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded in the insulation housing and a movable lower electrical contact is connected to a lower electrical terminal of the insulation housing via an electrical conductor which is operated by an adjacent pushrod. The lower electrical terminal is connected to a ring shaped heat transfer shield arranged along the inner wall or at least partly inside the wall of the insulation housing surrounding the pushrod and/or the distal end of the movable lower electrical contact.
Claims10
A pole part of a circuit-breaker arrangement comprising:
- an insulation housing for accommodating a vacuum interrupter insert containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded in the insulation housing and a movable lower electrical contact is connected to a lower electrical terminal of the insulation housing via an electrical conductor for operation by an adjacent pushrod;
- a ring shaped heat transfer shield connected with the lower electrical terminal and arranged along an inner wall or at least partly inside a wall of the insulation housing surrounding the pushrod and/or a distal end of the movable lower electrical contact,
- wherein the heat transfer shield is attached to the insulation housing and/or the lower electrical terminal by a press fit against the inner wall of the insulation housing;
- and
- a tension clamp section or a dedicated spring element for providing a pressing force of the heat transfer shield.
A pole part of a circuit-breaker arrangement comprising:
- an insulation housing for accommodating a vacuum interrupter insert containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded in the insulation housing and a movable lower electrical contact is connected to a lower electrical terminal of the insulation housing via an electrical conductor for operation by an adjacent pushrod;
- and
- a ring shaped heat transfer shield connected with the lower electrical terminal and arranged along an inner wall or at least partly inside a wall of the insulation housing surrounding the pushrod and/or a distal end of the movable lower electrical contact,
- wherein the ring shaped heat transfer shield comprises:
- an increased inner or outer surface provided by a rib structure.
A pole part of a circuit-breaker arrangement comprising:
- an insulation housing for accommodating a vacuum interrupter insert containing a pair of corresponding electrical switching contacts, wherein a fixed upper electrical contact is connected to an upper electrical terminal molded in the insulation housing and a movable lower electrical contact is connected to a lower electrical terminal of the insulation housing via an electrical conductor for operation by an adjacent pushrod;
- and
- a ring shaped heat transfer shield connected with the lower electrical terminal and arranged along an inner wall or at least partly inside a wall of the insulation housing surrounding the pushrod and/or a distal end of the movable lower electrical contact,
- wherein the heat transfer shield is molded on an insert arranged on an open bottom end of the insulation housing surrounding the pushrod.
Dependencies are inferred from the claim text.