Master Catalog Page 568 Glossary

Alpha Wire www.alphawire.com 1-800-52 ALPHA Specifications subject to change. For complete specifications and availability, visit www.alphawire.com. 568 copper A reddish metal that is an excellent conductor of electricity. copper-clad Steel with a coating of copper welded to it. Copperweld Copperweld Steel's trademark for copper-covered steel conductor. cord A small, flexible insulated cable. core In cables, a component or assembly of components over which additional components (shield, sheath, etc.) are applied. corona A discharge due to ionization of air around a conductor due to potential gradient exceeding a certain critical value. corona resistance The time that the insulation will withstand a specified level of field-intensified ionization that does not result in the immediate complete breakdown of the insulation. corrosion The deterioration of a material by chemical reaction or galvanic action. coverage The percent of completeness with which a metal braid covers the underlying surface. CRCS Continuous rigid cable support. Synonymous with tray. creep The dimensional change with time of a material under load. cross-linked Inter-molecular bonds between long chain thermoplastic polymers by chemical of electron bombardment means. The properties of the resulting thermosetting material are usually improved. cross-linked polyethylene A form of polyethylene whose molecules are more closely linked to produce a greater balance of physical and electrical properties. crosstalk A type of interference caused by signals from one circuit being coupled into adjacent circuits. C-track A cable guide mechanism manufactured of either plastic or metal used in continuous flexing applications. current Flow of electricity, measured in amps. current-carrying capacity The maximum current an insulated conductor can safely carry with out exceeding its insulation and jacket temperature limitations. cut-through resistance The ability of a material to withstand mechanical pressure, (usually a sharp edge or small radius) without separation. CV Continuous vulcanization. cycle life The number of repetitive flex motions that a wire or cable can withstand prior to breakdown. decibel (dB) A unit to express differences of power level. A term that expresses two power levels used to indicate gains or losses in a system. delay line A cable made to provide a very low velocity of propagation with long electrical delay for transmitted signals. derating factor A factor used to reduce the current carrying capacity of a wire when used in environments other than that for which the value was established. DeviceNet An industrial automation protocol operating in either a master/slave or distributed fashion to connect controllers to sensors. Trademark of ODVA. dielectric Any insulating (nonconducting) material between two conductors. dielectric constant (k) The ratio of the capacitance using the material in question as the dielectric, to the capacitance resulting when the material is replaced by air. dielectric strength The voltage which an insulation can withstand before breakdown occurs. Usually expressed as a voltage gradient (such as volts per mil). dielectric test A test in which a voltage higher than the rated voltage is applied for a specified time to determine the adequacy of the insulation under normal conditions. digital Representation of data by discrete characters. direct burial cable A cable installed directly in the earth, without a conduit. direct current (DC) An electric current which flows in one direction. direct current resistance (DCR) The resistance offered by any circuit to the flow of direct current. direction of lay The lateral direction in which the strands of a conductor run over the top of the cable conductor as they recede from an observer looking along the axis of the conductor or cable. Also applies to twisted cable. Glossary

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