|Équipement de protection|
A protective device breaks an electrical circuit when a stated electric current that passes through it is exceeded.
A protective device provides protection against electrical current only (not as a general protective device). It may be used to represent the complete set of elements including both the tripping unit and the breaking unit that provide the protection. This may be particularly useful at earlier stages of design where the approach to breaking the electrical supply may be determined but the method of tripping may not. Alternatively, this entity may be used to specifically represent the breaking unit alone (in which case the tripping unit will also be specifically identified). This entity is specific to dedicated protective devices and excludes electrical outlets that may have circuit protection.
HISTORY New entity in IFC4
Common Use Definitions
The following concepts are inherited at supertypes:
- IfcRoot: Identity, Revision Control
- IfcElement: Product Placement, Box Geometry, FootPrint Geometry, Body SurfaceOrSolidModel Geometry, Body SurfaceModel Geometry, Body Tessellation Geometry, Body Brep Geometry, Body AdvancedBrep Geometry, Body CSG Geometry, Mapped Geometry
- IfcDistributionElement: Spatial Containment
- IfcDistributionFlowElement: Axis Geometry, Clearance Geometry, Lighting Geometry
The Object Typing concept applies to this entity as shown in Table 407.
Table 407 — IfcProtectiveDevice Object Typing
Property Sets for Objects
The Property Sets for Objects concept applies to this entity as shown in Table 408.
Table 408 — IfcProtectiveDevice Property Sets for Objects
The Quantity Sets concept applies to this entity as shown in Table 409.
Table 409 — IfcProtectiveDevice Quantity Sets
The Material Constituents concept applies to this entity as shown in Table 410.
|Casing||Material from which the casing is constructed.|
Table 410 — IfcProtectiveDevice Material Constituents
The Port Nesting concept applies to this entity as shown in Table 411.
| ||Line||SINK||ELECTRICAL||The supply line, typically connected from a slot in a distribution board.|
| ||Load||SOURCE||ELECTRICAL||The load protected by this device, typically a cable connected to a device or the first junction box of a circuit.|
Table 411 — IfcProtectiveDevice Port Nesting
XSD Specification: <xs:element name="IfcProtectiveDevice" type="ifc:IfcProtectiveDevice" substitutionGroup="ifc:IfcFlowController" nillable="true"/>
<xs:attribute name="PredefinedType" type="ifc:IfcProtectiveDeviceTypeEnum" use="optional"/>
|CorrectPredefinedType|| : ||NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcProtectiveDeviceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcProtectiveDeviceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));|
|CorrectTypeAssigned|| : ||(SIZEOF(IsTypedBy) = 0) OR
('IFCELECTRICALDOMAIN.IFCPROTECTIVEDEVICETYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy.RelatingType));|
|CorrectPredefinedType|| : ||
Either the PredefinedType attribute is unset (e.g. because an IfcProtectiveDeviceType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
|CorrectTypeAssigned|| : ||
Either there is no protective device type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcProtectiveDeviceType.
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