| 摘要 |
<p>In a joint or termination for a high-voltage cable with polymeric insulation (1) longitudinal movement of the insulation (1) that may arise from the release of internal stresses resulting from the extrusion process or from thermal cycling in service are inhibited by pins (4) inserted in radial bores (3) in the insulation (1) and driven inwardly to indent into the metallic conductor (5). If desired, this can be done even before the insulation (1) is cut back in preparation for jointing. Preferably the cut-back end of the insulation (1) is also supported, preferably by a hardenable resinous material which fills all voids within the radius of the insulation (1), or alternatively by a rigid component, e.g. a flange (16) on the joint ferrule (15). Preferably the pins (4) are secured against radial outward movement by direct or indirect engagement with a surrounding annular member (7).</p> |
