7.4.3.19 IfcElectricGenerator

Générateur électrique
Elektrogenerator

An electric generator is an engine that is a machine for converting mechanical energy into electrical energy.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 363.
Type
IfcElectricGeneratorType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 363 — IfcElectricGenerator Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 364.
PredefinedTypeName
 Pset_ElectricGeneratorTypeCommon
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 364 — IfcElectricGenerator Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 365.
Name
Qto_ElectricGeneratorBaseQuantities

Table 365 — IfcElectricGenerator Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 366.
NameDescription
CasingMaterial from which the casing is constructed.

Table 366 — IfcElectricGenerator Material Constituents



Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 367.
PredefinedTypeRelatedObjectsDescription
ENGINEGENERATORIfcEngineEngine-Generator sets may optionally include an engine to indicate specific detail.

Table 367 — IfcElectricGenerator Object Aggregation



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 368.
PredefinedTypeNameFlowTypeDescription
 LoadSOURCEELECTRICALOutgoing power from generator.

Table 368 — IfcElectricGenerator Port Nesting




XSD Specification:

 <xs:element name="IfcElectricGenerator" type="ifc:IfcElectricGenerator" substitutionGroup="ifc:IfcEnergyConversionDevice" nillable="true"/>
 <xs:complexType name="IfcElectricGenerator">
  <xs:complexContent>
   <xs:extension base="ifc:IfcEnergyConversionDevice">
    <xs:attribute name="PredefinedType" type="ifc:IfcElectricGeneratorTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcElectricGenerator
SUBTYPE OF IfcEnergyConversionDevice;
PredefinedType : OPTIONAL IfcElectricGeneratorTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcElectricGeneratorTypeEnum.USERDEFINED) OR ((PredefinedType = IfcElectricGeneratorTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCELECTRICALDOMAIN.IFCELECTRICGENERATORTYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcElectricGeneratorType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no electric generator type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcElectricGeneratorType.

Inheritance Graph:

ENTITY IfcElectricGenerator
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
INVERSE
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
INVERSE
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcEnergyConversionDevice
ENTITY IfcElectricGenerator
PredefinedType : OPTIONAL IfcElectricGeneratorTypeEnum;
END_ENTITY;

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