Draw-out switchgear having improved disconnect contacts

Claim 1

A draw-out electrical switchgear having separable contacts and comprising: a pair of terminal clamps arranged at the ends of bushings in electrical connection with the separate contacts of said draw-out switchgear; a pair of fixed terminal stabs cooperating with said aligned terminal clamps in the engaged position of said switchgear; each terminal clamp having a conductive support member fixed to the end face of the corresponding bushing, and at least a pair of oppositely disposed contact fingers mounted on said fixed conductive support member to enable limited centering movement of said fingers; biasing means including springs which exert contact pressure on said contact fingers; a pair of lateral U-shaped slides symmetrically extending in relation to the mid-plane of each terminal clamp, and being rigidly fixed to said conductive support member on either side of said contact fingers so as to define a guiding passage parallel to the engagement direction; said fixed terminal stab being inserted within said guiding passage, the distance separating the two slides generally corresponding to the width of the corresponding terminal stab so as to ensure the locking of the terminal clamp in the engaged position of said switchgear.