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Text version of the page
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| CIRCULAR CONNECTORS | Connectors | ||
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| UK-AN | |||
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| Page 2 of 52 | |||
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| Wiring Method The method of wiring a U K-AM connector is one of its outstanding features, as provision has been made to enable the cable and contact to be either soldered or crimped prior to insertion into the plug or socket. This dispenses with the skilled and intricate operation of soldering contacts in position, which often needs to be carried out in confined spaces. The compression joint is becoming increasingly popular in most branches of industry today, and to enable full advantage to be taken of this manner of wiring, both size-15 and size 12 contacts are available with three different.sizes of conductor welt. This system enables a range of equipment wires to be used in a size-16 contact with a compression joint, thus dispensing with the use of sleeves, or thimbles, to increase the diameter of the conductor, A simple system of identification of such contacts has been evolved by the machining of a series of grooves on the rear of the contact. A similar method is also used for the identification of thermocouple contacts, but here an additional code of colour bands is used to denote the differing materials. These contacts are of standard design and may be used in any connector A series of special insertion tools has been designed to enable the contacts to be assembled to the connector without damage to the mouldings. Full details of their use are given in a stage-by-stage procedure in this publication. With a broad variety of contacts now available for each individual connector, the contacts can no longer be considered part of the connector for ordering purposes. Special attention should be paid to page 27, which gives full information on how to select the correct contact for the entry cable. | diameter. With standardisation in mind, these are of sufficient length to enable them to be used also as circuit identification markers, thus reducing the number of stock items. | ||
| Outlets and Flanges An internal clamp is formed by 3 pair of split cones around which braiding may be turned and earthed for continuity of screening. To meet the requirements of the British specifications, it is necessary to provide a pressure seal at the panel fixing and, in order to obtain this, a round flange and gasket are supplied on certain aluminium fixed units. To maintain interchangeabilitv with the AN types, units with loose square flanges are obtainable — these incorporate the fixing centres and general dimensions of AN types. The steel version has an integral flange machined to the dimensions of the AN types. | |||
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| Insulation Work in the Allen Clark Research Centre at Caswell and the Rubber Laboratory at Swindon resulted in the development of a resilient insulator capable of withstanding extended temperatures whilst being resistant to the effects of many fluids. Research and development continue on new fluids as they are introduced into the latest issues of connector specifications. High grade mouldings of this special insulator are incorporated in all UK-AN connectors, whether aluminium or steel housing, and by creating a seal on the faces of mating mouldings, plus a tapered orifice at the rear to accept up to |" diameter cable (approximately), extremely high voltages can be withstood by the exclusion of all air and moisture Special attention has been given to the design of the contacts wh ich, when assembled in the approved manner, ensure correct alignment and conductivity. Effective pressure sealing can be achieved subject to an appropriate method of assembly. Details may be obtained on request. A range of packing sleeves has been provided in a similar material to the insulator to enable a waterproof seal to be maintained on cables of comparatively small outside | |||
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