| | | First-make last-break contact A contact which is longer than a standard contact or which sits in the insulator in such a way that it mates with the opposing connector half before any of the other contacts. Used to ensure that a ground connection between the connector halves mates before, and breaks after any of the other contacts. Termination techniques Methods for connecting a wire to an electromechanical component, e.g. solderless connections according to IEC 60352, such as crimped, clip, wrapped, press-in, isulation displacement, spring clamp or screwed and soldered connections. Crimped connection A solderless electrical connection made by crimping. The crimping zone ofthe crimp barrel with the conductor inside is deformed or re-shaped by means of a crimping tool to establish a f conductor. jOHu or stranded wires can ue crimped, ine production ot crimped connections can be effected by hand crimping tools specification or by semiautomatic or fully automatic crimping machines.Stripping of wires and crimping can be accomplished in one step. Soldered connection An electrical connection madeby soldering. It is a limited detachable connection technique. Solder contacts are normally bonded into the insulator and cannot be removed bytheuser. Screw connection In a screw connection the stripped wire is clamped to the termination ofthe connector by a screw. This clamping screw may act both in the longitudinal axis of the conductor or transverse to itand may beloosened in a simple way. Coupling Various types ofcoupling mechanisms exist tolock two matingconnectorstogether: Threaded coupling -Ameansofcoupling byengaging threads present onthematingconnector. Bayonet coupling - A quick connector device utilising bayonet pins riding in ramps and providing jacking and locking features with limited rotation. Integrated locking - A quick coupling device utilising projections thatlockin place. Break-away connector - a connector designed to separate when a specified force is applied to the cable, without damage to the cable ortheconnector. | | Cycles of mechanical operation Number of mating cycles priorto abrasion oftheconductive contact surfaceand which do not resultin a significant rise of the contact resistance. Tests and measurements according to IEC60512-5 test9a. Contact resistance Theelectrical resistanceofa mated setof contacts under specified conditions. Tests and measurements according to IEC 60512-2, tests 2a,2b, 2c. Insulation resistance The resistance of the insulation between two conductive elements, in particular, the resistance between two contacts or between a contactand a metallic housing or shield.Tests and measurements according tolEC 60512-2, test 3a. Electromagnetic interference (EMI) As far as connectors are concerned, undesirable electromagnetic interference of the industrial cables to be connected or of the environment is perverted by shielding. Shielded connectors normally provide means to connect screens ofattachedcables. Derating curve (current-carrying capacity curve) The graphic representation of the current-carrying capacity of a component dependent on the ambient temperature. It shows which currents can be carried simultaneously under a specified ambient temperature through all contacts without the upper limit temperature being exceeded. Degree of protection (IP code) A coding system to notify the degree of protection of a housing against access to dangerous parts and ingressby solid substancesorwater. Protective conductor (symbol PE) Conductor required by some measuresforprotection against electric shockforelectricallyconnect-inganyofthefollowingparts: • exposedconductiveparts • extraneousconductiveparts • earth electrode • earthed point of the source or artificial neutral | | |
| | | Connector A component which terminates conductors for the purpose of providing connection and disconnection to a suitable mating component. Connectorwith breaking capacity (CBC) Connector speciallydesigned to be engaged ordisengaged in normal use when live or under load.The term live' is used if contacts are under an applied voltage, but not necessarily carrying currentThe term load-is used if a current is flowing through the contacts (IEC 61984 3.2). Replacing the term: industrial plug and socket device (PSD). Modular connector Connector of modular design that can be adaptedtovariousapplications. Contact arrangement The gauge, number, spacing and arrangement of contacts in a connector. Contactarrangement selectionsare based on the current and voltage requirements of the application.and the space availablefor the connector package Polarization A mechanical mechanism that allows connector halves to intermate in only one specific orientation. This can be accomplished by asymmetrical shapes of the two halves as in a D-Subminiature connector, insulator rotation, keys, keyways, ramps, or other means. Polarization prevents connectors of the same sex and/or same layoutfrom intermating when this is undesirable, such as when two otherwise identical connectors are used on the same professional panel. Polarization is typically done by the assembler and can not be changedbytheuser. Contact holder The individual contact elements are accommodated by the contact holder, which acts coincident as an insulator. Contact holderand connector housing may be one part. Contact cavity A defined hole in the connector insulator into which thecontactsfitThecavitiesaregenerally marked withaunique designation ornumberfor ease of identification. Contact The element in a connector that makes the actual electrical connection.Also the parts of a connector that actually carry the electrical current, and are touched together or separated to control theflow. InSchaltbauconnectorshigh-qualitycontactsareused: • Screw-machinecontacts • Socket contacts with hyperbolic grid orlamellae • Spring-loaded contacts | | |
| | | *1 otherthanUIC558VE *2 onlyMI PluslP67whennotmated; M1;M3withprotectioncap *3 IP54with bayonetcoupling, IP67with threaded coupling (trapezoidal thread) *4 with protection cap; GA only receptacle and B, UIC558, EP, ZH receptaclewith closed lid | | |