SS72012 datasheet(131/144 Pages) ACIT

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Glossary

not kink as it is twisted.

Plastic: Natural and synthetic polymers, (excluding rubbers), which

can be shaped by heat and pressure into a shape which is retained

upon cooling.

Plastic Deformation: Change in dimensions of an object under load

which is not recovered when the load is removed.

Plasticizer: Chemical agent added to plastics to make them softer and

more ﬂexible.

Plating: Generally implies electroplating.Immersion of a metal object

into a liquid bath (electrolyte) in which another metal is dissolved.

When a current is applied, the dissolved metal migrates from the

electrolyte and coats the surface of the immersed metal.

Polarity: 1) An electrical condition determining the direction in which

current tends to ﬂow.2) The quality of having two opposite charges.

Polyamide: A compound characterized by more than one amide

group.See nylon.

Polyethylene: A thermoplastic material composed of polymers of

ethylene.A variety of types of polyethylene are used in wires and cables.

Polyﬂon® TFE: Registered trademark of Daikon Industries LTD.

Tetraﬂuoroethylene (TE).A 260˚C rated ﬂuoropolymer that can be used

for insulation and jacket applications.

Polyimide: An organic polymer resin used for wire insulation in both

ﬁlm form and as a coating over an insulation or jacket.See Kapton.

Polymer: A substance formed by a chemical reaction in which two or

more small organic molecules join to form large molecules composed

of repeating small molecules.This term is often used interchangeably

with "plastic."

Polymerization: The process or chemical reaction by which low-

molecular-weight monomers are converted to high-molecular-weight

polymers.

Polypropylene: A plastic made by the polymerization of high-purity

propylene gas in the presence of an organo-metallic catalyst at

relatively low pressures and temperatures.It is similar to polyethylene

but stiffer.

Polytetraﬂuoroethylene (PTFE): The most thermally stable and

chemically resistant of all carbonaceous insulating compounds.It is

unaffected by sunlight, moisture, and most chemicals.Temperature

range is –90˚ to +250˚C and electrical properties are very constant

over the temperature range and a wide range of frequencies.Insulation

may be applied by extrusion, taping, dip-coating, and in cases where

another material is used, by dispersion coating.

Polyurethane: Cable jacketing material which offers good abrasion

resistance and high ﬂexibility.

Polyvinyl Chloride (PVC): An inexpensive thermoplastic material

composed of polymers of vinyl chloride.PVC is widely used for primary

wire insulation or jacketing in low-temperature applications.

Polyvinylidene Fluoride (PVDF): A ﬂuorocarbon with good

mechanical, electrical, and chemical properties.It is used for primary

insulation and in jackets for multi-conductor cables.

Potential Voltage: The work per unit charge required to bring any

charge to the point at which the potential exists.

Potting: Sealing of a cable termination or other part with a liquid

composition which hardens into an elastomer or solid.

Power: The time rate at which work is done; equal to W/t where W is

amount of work done in time t.Power will be obtained in watts if W is

expressed in joules and t in seconds.

Power Cables: Cables designed to distribute primary power to various

types of equipment.

Power Factor: 1) In an alternating current circuit, the number of watts

indicated by watt meter, divided by the apparent watts, the latter being

the watts as measured by a voltmeter and a meter.2) The multiplier

used with the apparent watts to determine how much of the supplied

power is available for use.3) That quantity by which the apparent watts

must be multiplied in order to determine the true power.4)

Mathematically, the cosine of the angle of phase difference between

current and voltage applied.

Primary Insulation: The insulation directly surrounding a conductor.

Propagation Delay: Time delay between input and output of signal,

measured in nanoseconds per foot of cable.

PTFE: Polytetraﬂuoroethylene.

PVC: Polyvinyl chloride.

Quad: A four conductor cable.

Reactance: Opposition offered to the ﬂow of alternating current by

inductance or capacitance of a component or circuit.

Receptacle: A connector mounted on equipment, a panel, or a wall.

Red Plague: A powdery red cuprous oxide growth sometimes found

on silver coated copper conductors and shield braids.It is fungus-like in

appearance and appears in random spots along the length of a

conductor or shield.It most often occurs at the point of crossover in a

shield or in the interstices of a standard conductor.Proper design,

manufacture and installation has largely eliminated this problem.

Small amounts of water are required to initiate this reaction.

Resin: An organic substance of natural or synthetic origin

characterized by being polymeric in structure and predominantly

amorphous.

Resistance: Property of a conductor that determines the current

produced by a given difference of potential.The ohm is the practical

unit of resistance.

Resistive Conductor: A conductor used primarily because it possesses

the property of high electrical resistance.

Resistivity: The ability of a material to resist passage of electrical

current either through its bulk or on a surface.The unit of volume

resistivity is the ohm-cm; of surface resistivity, the ohm.

Respool: To transfer material from one package spool to another for

various purposes, such as to verify lengths.

RETMA: Former Radio-Electronics-Television Manufacturers

Association; name changed to Electronic Industries Association (EIA).

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