IfcElectricMotorTypeEnum

Semantic definitions at the type

Type definition

The IfcElectricMotorTypeEnum defines the range of different types of electric motor that can be specified.

HISTORY New type in IFC2x2.

Enumeration definition

Constant	Description
DC	A motor using either generated or rectified Direct Current (DC) power.
INDUCTION	An alternating current motor in which the primary winding on one member (usually the stator) is connected to the power source and a secondary winding or a squirrel-cage secondary winding on the other member (usually the rotor) carries the induced current. There is no physical electrical connection to the secondary winding, its current is induced.
POLYPHASE	A two or three-phase induction motor in which the windings, one for each phase, are evenly divided by the same number of electrical degrees.
RELUCTANCESYNCHRONOUS	A synchronous motor with a special rotor design which directly lines the rotor up with the rotating magnetic field of the stator, allowing for no slip under load.
SYNCHRONOUS	A motor that operates at a constant speed up to full load. The rotor speed is equal to the speed of the rotating magnetic field of the stator; there is no slip.
USERDEFINED	User-defined type.
NOTDEFINED	Undefined type.

Formal representations

XSD Specification

 <xs:simpleType name="IfcElectricMotorTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="dc"/>

   <xs:enumeration value="induction"/>

   <xs:enumeration value="polyphase"/>

   <xs:enumeration value="reluctancesynchronous"/>

   <xs:enumeration value="synchronous"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcElectricMotorTypeEnum = ENUMERATION OF (

 DC, 
 INDUCTION, 
 POLYPHASE, 
 RELUCTANCESYNCHRONOUS, 
 SYNCHRONOUS, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

	Electric Motor Type Enum
	Enumération des types de moteur électrique