Definition from IAI: An IfcTransformerType defines a
particular type of transformer that is an inductive stationary device that
transfers electrical energy from one circuit to another.
HISTORY: New entity in IFC
2x2
Use Definitions
An IfcTransformerType is a subtype of
IfcEnergyConversionDeviceType that provides for all forms of transformer.
Usage of IfcTransformerType defines the parameters for one or
more occurrences of IfcEnergyConversionDevice. Parameters are specified
through a common property set.
No predefined types of electrical generator are specified at this stage.
Use the IfcTransformerType.Name and
IfcTransformerType.Description attributes to further qualify a
transformer.
Geometry Use Definitions
The geometric representation of an occurrence of a transformer (instance
of IfcEnergyConversionDevice) of a particular IfcTransformerType is
given by the IfcProductDefinitionShape, allowing multiple geometric
representations. Included are:
Local Placement
The local placement is defined in the supertype IfcProduct. It is
defined by a subtype of IfcObjectPlacement which can define an absolute
placement, relative placement, or grid reference, with each defining the local
coordinate system referenced by all geometric representations. The
PlacementRelTo relationship of IfcLocalPlacement, if given, shall point
to the same IfcSpatialStructureElement which is used in the
ContainedInStructure inverse attribute, or to a referenced spatial structure
element at a higher level. If the relative placement is not used, the absolute
placement is defined within the world coordinate system.
Informal propositions for local placement:
- If the LocalPlacement is specified, then all aggregated components
should use this placement as their relative placement.
Standard Geometric Representation
Currently, the use of profiles to define the geometry for an occurrence
of this class is not supported. The standard geometric representation is
defined using explicit geometry.
B-Rep Representation
The faceted B-Rep capabilities (with or without voids) shall be
supported for B-Rep representation.
