SS72012 datasheet(126/144 Pages) ACIT

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Glossary

Corona Resistance: The amount of time that insulation will

withstand a speciﬁed level of corona without breakdown.

Corrosion: Chemical action which causes destruction of the surface of

metal by oxidation or chemical combination Also caused by reduction

of the electrical efﬁciency between the metal and a contiguous

substance or to the disintegrating effect of strong electrical currents or

ground return currents in electrical systems.The latter is known as

electrolytic corrosion.

Coulomb: The quantity transferred by one ampere in one second.

Coverage: The calculated percentage which deﬁnes the completeness

with which a metal braid physically covers the underlying surface.The

higher percentage of coverage, the greater the protection against

external interference.

Coverings: Textile braids or jackets of rubber, plastics, or other

materials applied over wire and cables to provide mechanical

protection and perhaps identiﬁcation.

Crazing: Minute cracks on or near the surface of materials such as

plastics.

Creep: The dimensional change with time of a material under load.

Creepage: Electrical leakage on a solid dielectric surface.

Creepage Surface: An insulating surface which provides physical

separation as a form of insulation between two electrical conductors of

potential.

CS-95: Phelps Dodge High Performance Conductors trade name for

extra high strength copper alloy.

Crimp: Compressing (deforming) a metal sleeve onto a conductor to

make a mechanical and electrical connection.A proper crimp breaks

the oxide layer on the surface of metals, and cold-welds the parts.

Cross-Linking: The setting up of chemical links between the

molecular chains of polymers.

Cross-Sectional Area of a Conductor: The sum of the cross-sectional

areas of its component wires, that of each wire being measured

perpendicular to its individual axis.

Crosstalk: Signal interference between nearby conductors caused by

the pickup of stray energy from one conductor by another.

CSA: Canadian Standards Association.Wires used in Canada are

speciﬁed to CSA standards much the same as wires used in the U.S.are

speciﬁed to U.L.standards.

Current: The rate of transfer of electricity.Practical unit is the ampere,

which represents the transfer of one coulomb per second.

Current Carrying Capacity: The maximum current a conductor can

carry without heating beyond a safe limit.

Cut-Through Resistance: Resistance of solid material to penetrating

by a sharp object under conditions of pressure, temperature, etc.

CV: Abbreviation for continuous vulcanization.

Cycle: The complete sequence including reversal of the ﬂow of

alternating electric current.

dB: Abbreviation for decibel.

dB Loss: The relative loss of signal in a conductor, expressed in

decibels.

D.C.: Abbreviation for direct current.

Decibel (dB): Unit to express ratio differences of power level.Used to

express power gain in ampliﬁers or power loss in passive circuits or

cables.

Delay Line: A cable or component made to delay transmitted signals

for a speciﬁc amount of time.

Denier: A term that describes the weight of a yarn (not cotton or spun

rayon) which in turn determines its physical size.One Denier indicates a

strand of material 9000 meters long, weighing one gram.

Derating Factor: A factor used to reduce a current carrying capacity of

a wire when used in other environments from that for which the value

was established.For example, power handling ﬁgures stated for sea

level are derated for increased altitude.

Dielectric: An insulating material.

Dielectric Absorption: That property of an imperfect dielectric

whereby there is an accumulation of electric charges within the body of

the material when it is placed in an electric ﬁeld.

Dielectric Constant: A relative measure of a the effectiveness of a

substance as an electrical insulator.It is expressed as the ratio of the

substance’s permittivity to the permittivity of free space.

Dielectric Loss: Losses due to electric energy being transformed into

heat in a dielectric when it is subjected to a changing electric ﬁeld.

Dielectric Strength: The voltage which an insulating material can

withstand before breakdown occurs, usually expressed as a voltage

gradient (such as volts per mil).

Dielectric Test: Tests which consist of the application of a voltage

higher than the rated voltage for a speciﬁed time.The purpose is to

determine the adequacy of insulating materials.

Digital Signal: An electrical signal which consists of two distinct

states—on and off—as opposed the the constant, periodic nature

of an analog signal.

Dip Coating: An insulating coating applied to the conductor by

passing the conductor through an applicator containing liquid

insulating medium.This is the method typically used for coating

magnet wire.

Direct Current: An electric current which ﬂows in only one direction.

Direction of Lay: The lateral direction in which the elements of a

cable run over the top of the cable as they recede from an observer

looking along the axis of the cable.ASTM symbols are used to indicate

direction; S for left-hand, Z for right-hand.

Dissipation Factor (loss tangent, tan approx. power factor): The

tangent of the loss angle of the insulating material.

Disturbed Conductor: A conductor that receives energy generated by

the ﬁeld of another conductor.

Disturbing Conductor: Conductor carrying the energy that creates

spurious signals in another conductor.

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