Mechanical Busbar Termination Connector MECHANICAL CONNECTORS UT14 Connector Principle Application Termination of solid sector shaped aluminium conductors. Range 95 - 300mm² The Hepworth UT range of mechanical connectors is designed as an alternative to the traditional flat busbar termination with the following advantages: 1. With the aid of shear torque screws, to secure the conductor the necessary consistency between connections can be achieved without the use of specialised tooling. 2. The full connection can be carried out using basic hand tools. 3. The busbar face of the connector provides a more consistent area of contact with the additional advantage, in the case of aluminium busbars, of surface oxide rupture and penetration under pressure. * *Note: With tinned copper busbars, the tin acts effectively as a bi-metallic interface and the soft tin surface layer yields under pressure to the surface ridges of the connector, deforming around the penetrating aluminium as a corrosion-resistant contact. www.cablejoints.co.uk Thorne and Derrick UK Tel 0044 191 490 1547 Fax 0044 191 477 5371 Tel 0044 117 977 4647 Fax 0044 117 9775582 www.thorneandderrick.co.uk Mechanical Busbar Termination Connector MECHANICAL CONNECTORS UT14 Connector Physical Dimensions (mm) Fitting Instructions Set the conductor to the required position, cut to length and strip the insulation equal to the connector length plus 5mm. Thoroughly abrade the exposed conductor and clean, or if necessary, abrade the busbar in the contact area (eg. in the case of aluminium). Assemble the connector around the conductor and tighten the screw sufficiently to secure to the conductor, temporarily, but do not shear the screw head at this stage. Offer the connector to the busbar and assemble, adjusting the position of the connector on the cable if necessary. Carefully tighten the doubleheaded screw, using the outer screw head only, until the head shears, ensuring that the socket does not engage or foul the lower hexagon. Finally check for correct alignment of the conductor and tighten the cable clamping screw until the head shears. NOTES 1. The connector is normally supplied with disc-spring type washers for the busbar clamping screw but if the busbar is less than 8mm ( or 5/16” thick), suitable spacer washers must be used to achieve a nominal thickness of 8mm or 5/16”. 2. If copper cable is to be jointed it should be wrapped in brass gauze to improve the electrical stability of the interface connection. ©COPYRIGHT Sicame Electrical Developments Ltd operates a continuous product design development and improvement programme and offers active co-operation establishing satisfactory procedures and systems to meet new or unusual jointing situations. The company reserves the right to introduce modifications to the above designs and specifications without prior notice.
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