Master Catalog Page 569 Glossary

Alpha Wire www.alphawire.com 1-800-52 ALPHA Specifications subject to change. For complete specifications and availability, visit www.alphawire.com. 569 dissipation factor The tangent of the loss angle of the insulating material. (Also referred to as loss tangent, tan , and approximate power factor.) drain wire In a cable, the uninsulated wire in intimate contact with a shield to provide for easier termination of such a shield to ground. drawing In wire manufacture, pulling the metal through a die or series of dies to reduce diameter to a specified size. dual wall With heat shrink tubing, a construction having a double- layer construction, with the inner wall typically having an adhesive or meltable structure to bond and seal the tubing to the substrate. duct An underground or overhead tube for carrying electrical cables. duplex insulated In the thermocouple industry, a combination of dissimilar metal conductors of a thermocouple or thermocouple extension wire. eccentricity Like concentricity, a measure of the center of a conductor's location with respect to the circular cross section of the insulation. Expressed as a percentage of displacement of the circle within the other. ECTFE Ethylene chloro- trifluoroethylene. EIA Electronic Industries Alliance. elastomer A class of long-chain polymers capable of being crosslinked to produce elastic compounds, e.g. polychloroprene and ethylene propylene rubber. electromagnetic Pertaining to the combined electric and magnetic fields associated with movements of electrons through conductors. electromotive force (EMF) Pressure or voltage. The force which causes current to flow in a circuit. electrostatic Pertaining to static electricity or electricity at rest. A constant intensity electric charge. elongation The fractional increase in length of a material stressed in tension. EMC Electromagnetic compatibility. No emission of interference exceeding FCC limits. EMF See electromotive force. EMI Electromagnetic interference. EMP Electromagnetic pulse. ends In braiding, the number of essentially parallel wires or threads on a carrier. EPOS Abbreviation for electronic point-of-sale. EPR Ethylene-propylene rubber, having similar physical properties to butyl rubber. The polymer is chemically cross-linked. epoxy An adhesive used in the connector termination process. EtherNet/IP An industrial automation protocol using CIP for upper layers and Ethernet for the lower layers. Trademark of ODVA. ETFE Ethylene tetrafluoroethylene. ETPC Abbreviation for electrolytic tough pitch copper. It has a minimum conductivity of 99.9%. expanded diameter Diameter of shrink tubing as supplied. When heated, the tubing will shrink to its extruded diameter. external interference The effects of electrical waves or fields which cause spurious signals other than the desired intelligence, e.g. noise. extrusion A process of continuously applying an insulation over a conductor or jacket (rubber or plastic compounds). FAA Federal Aeronautics Administration. farad (F) Unit of capacitance whereby a charge of one coulomb produces a one volt potential difference. fatigue resistance Resistance to metal crystallization which leads to conductors breaking from flexing. feedback Transfer of some output energy of an amplifier to its input, so as to modify its characteristic. FEP Fluorinated ethylene propylene. FHDPE Foamed high-density polyethylene. Fieldbus (1) A generic term for communication protocols used in industrial networks for instrumentation and control. (2) A specific set of protocols that includes Foundation Fieldbus and HSE (High-Speed Ethernet). figure 8 cable An aerial cable configuration in which the conductors and the steel strand which supports the cable are integrally jacketed. A cross section of the finished cable approximates the figure "eight." Glossary

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