<?xml version="1.0" encoding="utf-8"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="836e0a7580b5d43b0ccd892ddace6c3b" templatetype="PSET_TYPEDRIVENOVERRIDE" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd" xmlns="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4X4" />
  <Name>Pset_CableSegmentTypeWirePairSegment</Name>
  <Definition>Properties of wire pair segments. This property set is applicable to a type or occurrence of _IfcCableSegment_ with predefined type WIREPAIRSEGMENT.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcCableSegment/WIREPAIRSEGMENT</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcCableSegment/WIREPAIRSEGMENT</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="40c2a797c51a417e92aa1faf950f25ac">
      <Name>CharacteristicImpedance</Name>
      <Definition>A quantity defined for a mode of propagation at a given frequency in a specific uniform transmission line or uniform waveguide by one of the three following relations:
Z1 = S/ |I|2
Z2 = |U|2 / S
Z3 = U / I
where Z is the complex characteristic impedance, S the complex power and U and I are the values, usually complex, respectively of a voltage and a current conventionally defined for each type of mode by analogy with transmission line equations</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcElectricResistanceMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="95a9ae79e2794678b6ae2bdc8e4950ee">
      <Name>ConductorDiameter</Name>
      <Definition>Indicates the conductor diameter. It is only used for twisted and untwisted wire pair.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="e3eb47eb091249d1843ffc46ffb436a1">
      <Name>CoreConductorDiameter</Name>
      <Definition>Indicates the core conductor diameter. It is only used for coaxial wire pair.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="7947ddd2b15c428f943f4454d56567d9">
      <Name>JacketColour</Name>
      <Definition>Indicates the colour of the cable or fitting jacket.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcLabel" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="64dbfbf23210401d9b86e6925086e4f8">
      <Name>ShieldConductorDiameter</Name>
      <Definition>Indicates the shielded conductor diameter. It is only used for coaxial wire pair.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveLengthMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
    <PropertyDef ifdguid="dff61defcebe42f59d2ca0a110ac1716">
      <Name>WirePairType</Name>
      <Definition>Indicates the type of wire pair, i.e., twisted, untwisted or coaxial pair.</Definition>
      <PropertyType>
        <TypePropertyEnumeratedValue>
          <EnumList name="PEnum_WirePairType">
            <EnumItem>COAXIAL</EnumItem>
            <EnumItem>TWISTED</EnumItem>
            <EnumItem>UNTWISTED</EnumItem>
            <EnumItem>OTHER</EnumItem>
            <EnumItem>NOTKNOWN</EnumItem>
            <EnumItem>UNSET</EnumItem>
          </EnumList>
          <ConstantList>
            <ConstantDef>
              <Name>COAXIAL</Name>
              <Definition>Coaxial type.</Definition>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>TWISTED</Name>
              <Definition>Twisted wire pair.</Definition>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>UNTWISTED</Name>
              <Definition>Untwisted wire pair.</Definition>
              <NameAliases />
              <DefinitionAliases />
            </ConstantDef>
            <ConstantDef>
              <Name>OTHER</Name>
              <Definition>required category not on scale</Definition>
              <NameAliases>
                <NameAlias lang="en">(other)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is not listed.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>NOTKNOWN</Name>
              <Definition>Value is unkown</Definition>
              <NameAliases>
                <NameAlias lang="en">(unknown)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value is unknown.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
            <ConstantDef>
              <Name>UNSET</Name>
              <Definition>Value has not been specified</Definition>
              <NameAliases>
                <NameAlias lang="en">(unset)</NameAlias>
              </NameAliases>
              <DefinitionAliases>
                <DefinitionAlias lang="en">Value has not been specified.</DefinitionAlias>
              </DefinitionAliases>
            </ConstantDef>
          </ConstantList>
        </TypePropertyEnumeratedValue>
      </PropertyType>
      <NameAliases />
      <DefinitionAliases />
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases />
</PropertySetDef>