NEMA WC 66:2001

NEMA WC 66:2001 Performance Standard For Category 6 And Category 7 100 Ohm Shielded And Unshielded Twisted Pair Cables Defines minimum electrical performance and allowable conductor sized, stranding, and shielding for premise wiring cables for voice and data applications for 100 ohm shielded and unshielded twisted pai

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Table of Contents

Foreword
Disclaimer
Scope
Section1REFERENCEDSTANDARDS
Section2PARTIDENTIFICATIONNUMBER(PIN)
2.1PartIdentificationNumber(PIN)
Section3MATERIALSANDMECHANICALREQUIREMENTS
3.1Conductors
3.1.1BareCopperWire
3.1.2Tin-CoatedWire
3.1.3Silver-CoatedCopperWire
3.1.4StrandedCopperWire
3.2InsulatingMaterials
3.3Shields
3.3.1IndividuallyShieldedPairs,Foil
3.3.2IndividuallyShieldedPairs,Braid
3.3.3OverallShield,Foil
3.3.4OverallShield,Braid
3.3.5DrainWire(s)
3.4Mechanical,Physical,Dimensional,and
SafetyConsiderations
Section4ELECTRICALDEFINITIONS
4.1Resistance
4.1.1DCConductorResistance
4.1.2DCResistanceUnbalance
4.1.3InsulationResistance
4.2InputImpedance
4.3CharacteristicImpedance
4.4ReturnLoss
4.5InsertionLoss(Attenuation)
4.6CrosstalkLoss
4.6.1Near-EndCrosstalkLoss(NEXT)
4.6.2PowerSumNear-EndCrosstalkLoss
(PSNEXT)
4.6.3Far-EndCrosstalkLoss(FEXT)/Equal
LevelFar-EndCrosstalk(ELFEXT)
4.6.3.1Far-EndCrosstalkLoss(PSNEXT)
4.6.3.2EqualLevelFar-EndCrosstalk
(PSELEXT)
4.6.4PowersumEqualLevelFar-EndCrosstalk
(PSELFEXT)
4.7TransferImpedance
4.8VelocityofPropagation
4.9PhaseDelay
4.10PhaseDelaySkew
4.11Balance
4.11.1LongitudinalConversionLoss(LCL)
4.11.2LongitudinalConversionTransferLoss
(LCTL)
Section5TESTMETHODS
5.1General
5.2InputImpedance
5.3CharacteristicImpedance
5.4ReturnLoss
5.5InsertionLoss(Attenuation)
5.6Near-EndCrosstalkLoss(NEXT)andPowerSum
Near-EndCrosstalkLoss(PSNEXT)
5.7Far-EndCrosstalkLoss(FEXT),EqualLevel
Far-EndCrosstalk(ELFEXT)andPowerSumEqual
LevelFar-EndCrosstalk(PSELFEXT)
5.8TransferImpedance
5.9VelocityofPropagation
5.10PhaseDelay
5.11PhaseDelaySkew
5.12Balance
5.12.1LongitudinalConversionLoss(LCL)
5.12.2LongitudinalConversionTransferLoss
(LCTL)
Section6ELECTRICALREQUIREMENTS
6.1General
6.2Resistance
6.2.1DCResistance
6.2.2DcResistanceUnbalance
6.2.3InsulationResistance
6.3Impedance
6.3.1InputImpedance
6.3.2CharacteristicImpedance
6.4ReturnLoss
6.5InsertionLoss(Attenuation)
6.5.1HorizontalandBackboneCables
6.5.2Patch(Stranded)Cables
6.6CrosstalkLoss
6.6.1Near-EndCrosstalkLoss(NEXT)
6.6.2PowerSumNear-EndCrosstalkLoss
(PSNEXT)
6.6.3EqualLevelFar-EndCrosstalk(ELFEXT)
6.6.4PowerSumEqualLevelFar-EndCrosstalk
(PSELFEXT)
6.6.5TransferImpedance
6.6.6VelocityofPropagation
6.7PhaseDelaySkew
6.8Balance
6.8.1LongitudinalConversionLoss(LCL)
6.8.2LongitudinalConversionTransferLoss
(LCTL)
AppendixAELECTRICALPERFORMANCEREQUIREMENTSANDREFERENCES
FORCATEGORY6ANDCATEGORY7CABLES

Abstract

Defines minimum electrical performance and allowable conductor sized, stranding, and shielding for premise wiring cables for voice and data applications for 100 ohm shielded and unshielded twisted pair cables.

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