7.4.2.13 IfcElectricMotorTypeEnum

7.4.2.13.1 Semantic definition

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

Type	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.

Table A

TYPE IfcElectricMotorTypeEnum = ENUMERATION OF
(DC
,INDUCTION
,POLYPHASE
,RELUCTANCESYNCHRONOUS
,SYNCHRONOUS
,USERDEFINED
,NOTDEFINED);
END_TYPE;