#### 7.2.2.8 IfcElectricGeneratorTypeEnum

The IfcElectricGeneratorTypeEnum defines different types of electric generators.

> HISTORY New type in IFC2x2. Values added in IFC4.

Enumerated Item Definitions:

- CHP: Combined heat and power supply, used not only as a source of electric energy but also as a heating source for the building. It may therefore be not only part of an electrical system but also of a heating system.
- ENGINEGENERATOR: Electrical generator with a fuel-driven engine, for example a diesel-driven emergency power supply.
- STANDALONE: Electrical generator which does not include its source of kinetic energy, that is, a motor, engine, or turbine are all modeled separately.
- USERDEFINED: User-defined type.
- NOTDEFINED: Undefined type.

XSD Specification:

<xs:simpleType name="IfcElectricGeneratorTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="chp"/>
<xs:enumeration value="enginegenerator"/>
<xs:enumeration value="standalone"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcElectricGeneratorTypeEnum = ENUMERATION OF (
| CHP, ENGINEGENERATOR, STANDALONE, USERDEFINED, NOTDEFINED);
END_TYPE;

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