7.4.4.18 Pset_CableSegmentOccurrence
7.4.4.18.1 Semantic definition
Properties for the occurrence of an electrical cable, core or conductor that conforms to a type as specified by an appropriate type definition within IFC.
NOTE: Maximum allowed voltage drop should be derived from the property within Pset_ElectricalCircuit.
7.4.4.18.2 Applicable entities
7.4.4.18.3 Properties
| Name | Property Type | Data Type | Description | |
|---|---|---|---|---|
| DesignAmbientTemperature | IfcPropertyBoundedValue | IfcThermodynamicTemperatureMeasure |
The highest and lowest local ambient temperature likely to be encountered. |
|
| UserCorrectionFactor | IfcPropertySingleValue | IfcReal |
An arbitrary correction factor that may be applied by the user. |
|
| NumberOfParallelCircuits | IfcPropertySingleValue | IfcCountMeasure |
Number of parallel circuits. |
|
| InstallationMethod | IfcPropertySingleValue | IfcLabel |
Method of installation of cable/conductor. Installation methods are typically defined by reference in standards such as IEC 60364-5-52, table 52A-1 or BS7671 Appendix 4 Table 4A1 etc. Selection of the value to be used should be determined from such a standard according to local usage. |
|
| InstallationMethodFlagEnum | IfcPropertyEnumeratedValue | PEnum_InstallationMethodFlagEnum |
Special installation conditions relating to particular types of installation based on IEC60364-5-52:2001 reference installation methods C and D. |
|
| DistanceBetweenParallelCircuits | IfcPropertySingleValue | IfcLengthMeasure |
Distance measured between parallel circuits. |
|
| SoilConductivity | IfcPropertySingleValue | IfcThermalConductivityMeasure |
Thermal conductivity of soil. Generally, within standards such as IEC 60364-5-52, table 52A-16, the resistivity of soil is required (measured in [SI] units of degK.m /W). This is the reciprocal of the conductivity value and needs to be calculated accordingly. |
|
| CarrierStackNumber | IfcPropertySingleValue | IfcInteger |
Number of carrier segments (tray, ladder etc.) that are vertically stacked (vertical is measured as the z-axis of the local coordinate system of the carrier segment). |
|
| MountingMethod | IfcPropertyEnumeratedValue | PEnum_MountingMethodEnum |
The method of mounting cable segment occurrences on a cable carrier occurrence from which the method required can be selected. This is for the purpose of carrying out 'worst case' cable sizing calculations and may be a conceptual requirement rather than a statement of the physical occurrences of cable and carrier segments. |
|
| IsHorizontalCable | IfcPropertySingleValue | IfcBoolean |
Indication of whether the cable occurrences are mounted horizontally (= TRUE) or vertically (= FALSE). |
|
| IsMountedFlatCable | IfcPropertySingleValue | IfcBoolean |
Indication of whether the cable occurrences are mounted flat (= TRUE) or in a trefoil pattern (= FALSE). |
|
| CurrentCarryingCapacity | IfcPropertySingleValue | IfcElectricCurrentMeasure |
Maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value. Based on IEC60826-11-13. NOTE: The temperature specified value is maximum Design Ambient Temperature. |
|
| MaximumCableLength | IfcPropertySingleValue | IfcLengthMeasure |
Maximum cable length based on voltagedrop. NOTE: This value may also be specified as a constraint within an IFC model if required but is included within the property set at this stage pending implementation of the required capabilities within software applications. |
|
| PowerLoss | IfcPropertySingleValue | IfcPowerMeasure |
The power loss in [W]. Total loss of power across this cable. |
|
| SequentialCode | IfcPropertySingleValue | IfcLabel |
Indicates the sequential code of the cable or wire. |