ITU K.68:2008

ITU K.68:2008 Management Of Electromagnetic Interference On Telecommunication Systems Due To Power Systems And Operators' Responsibilities Defines the procedure to evaluate the acceptability of an e.m. interference and gives: - the criteria defining the interference situations to be examined; - the interference management voltages to be

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Table of Contents

1Scope
2Normativereferences
3Definitions
4Procedureforevaluatingthee.m.interference
4.1General
4.2Interferenceframe
4.3Collectionofelectricalinformationofinducing
plants
4.4Evaluationoftheinterferenceresultsand
compliancewiththemanagementvoltages
5Interferencesituationstobeexamined
5.1Couplingtypestobeconsidered
5.2Referenceinfluencedistance
6Managementvoltages
6.1Criteriadefiningtheapplicationofthemanagement
voltages
6.2Dangervoltages:Limits
6.3Damagevoltages
6.4Immunityvoltages
6.5Noisevoltage:Limit
7Referenceinterferenceconditions
7.1General
7.2Conditionsrelatedtotheinducingplant
7.3Conditionsrelatedtothetelecommunicationplant
8Determinationofcompliancewiththemanagementvoltages
8.1General
8.2Superpositionoftheeffects
8.3Determinationofcompliancethroughcalculations
8.4Determinationofcompliancethroughmeasurements
9Managementofinterference
9.1General
9.2Plantlife
9.3Exchangeofinformation
9.4Plantdocumentation
AnnexA-Methodfortheevaluationofthereference
influencedistance
A.1Inductivecoupling
A.2Conductivecoupling
AppendixI-Weightingfactorsforuseindetermining
thepsophometricallyweightedvoltage
AppendixII-Valuesforthequantitiesaffectingthe
referenceinfluencedistanceforinductive
coupling
II.1Guidancevalues
II.2ValuesoftheparametersfortheRIDevaluation:
Inductivecoupling
II.3ValuesoftheparametersfortheRIDevaluation:
Conductivecoupling
AppendixIII-StepsfordeterminingtheRIDvaluesdue
toa.c.powerorelectrifiedtractionline

Abstract

Defines the procedure to evaluate the acceptability of an e.m. interference and gives: - the criteria defining the interference situations to be examined; - the interference management voltages to be applied; - the installation conditions of electric power, electrified traction and telecommunication systems under which the management voltages are applicable.

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