Pset_CableSegmentOccurrence

BACnet MVD

#### 7.4.4.18 Pset_CableSegmentOccurrence

PSET_OCCURRENCEDRIVEN / IfcCableSegment

Natural language names

| Cable Segment Occurrence

Properties

buildingSMART Data Dictionary

PSD-XML

Name | Type | Description
--- | --- | ---

DesignAmbientTemperature

P_BOUNDEDVALUE / IfcThermodynamicTemperatureMeasure

| Design Ambient Temperature | The highest and lowest local ambient temperature likely to be encountered.

UserCorrectionFactor

P_SINGLEVALUE / IfcReal

| User Correction Factor | An arbitrary correction factor that may be applied by the user.

NumberOfParallelCircuits

P_SINGLEVALUE / IfcInteger

| Number Of Parallel Circuits | Number of parallel circuits.

InstallationMethod

P_SINGLEVALUE / IfcLabel

| Installation Method | 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

P_ENUMERATEDVALUE / IfcLabel / PEnum_InstallationMethodFlagEnum

| Installation Method Flag Enum | Special installation conditions relating to particular types of installation based on IEC60364-5-52:2001 reference installation methods C and D.

DistanceBetweenParallelCircuits

P_SINGLEVALUE / IfcLengthMeasure

| Distance Between Parallel Circuits | Distance measured between parallel circuits.

SoilConductivity

P_SINGLEVALUE / IfcThermalConductivityMeasure

| Soil Conductivity | 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

P_SINGLEVALUE / IfcInteger

| Carrier Stack Number | 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

P_ENUMERATEDVALUE / IfcLabel / PEnum_MountingMethodEnum

| Mounting Method | 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

P_SINGLEVALUE / IfcBoolean

| Is Horizontal Cable | Indication of whether the cable occurrences are mounted horizontally (= TRUE) or vertically (= FALSE).

IsMountedFlatCable

P_SINGLEVALUE / IfcBoolean

| Is Mounted Flat Cable | Indication of whether the cable occurrences are mounted flat (= TRUE) or in a trefoil pattern (= FALSE).

CurrentCarryingCapasity

P_SINGLEVALUE / IfcElectricCurrentMeasure

| Current Carrying Capasity | 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

P_SINGLEVALUE / IfcLengthMeasure

| Maximum Cable Length | 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

P_SINGLEVALUE / IfcElectricCurrentMeasure

| Power Loss | Total loss of power across this cable.

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