IfcProtectiveDeviceTypeEnum

Semantic definitions at the type

Type definition

The IfcProtectiveDeviceTypeEnum specifically defines the range of different breaker unit types that can be used in conjunction with protective device. Types may also be used as a reference to a complete protective device in circumstances where tripping units are not separately identified (typically expected to be the case during earlier stages of design).

HISTORY New type in IFC2x2. Modified definition and usage in IFC4.

Enumeration definition

Constant	Description
CIRCUITBREAKER	A mechanical switching device capable of making, carrying, and breaking currents under normal circuit conditions and also making, carrying for a specified time and breaking, current under specified abnormal circuit conditions such as those of short circuit.
EARTHLEAKAGECIRCUITBREAKER	A device that opens, closes, or isolates a circuit and has short circuit protection but no overload protection. It attempts to break the circuit when there is a leakage of current from phase to earth, by measuring voltage on the earth conductor.
EARTHINGSWITCH	A safety device used to open or close a circuit when there is no current. Used to isolate a part of a circuit, a machine, a part of an overhead line or an underground line so that maintenance can be safely conducted.
FUSEDISCONNECTOR	A device that will electrically open the circuit after a period of prolonged, abnormal current flow.
RESIDUALCURRENTCIRCUITBREAKER	A device that opens, closes, or isolates a circuit and has short circuit and overload protection. It attempts to break the circuit when there is a difference in current between any two phases. May also be referred to as 'Ground Fault Interupter (GFI)' or 'Ground Fault Circuit Interuptor (GFCI)'
RESIDUALCURRENTSWITCH	A device that opens, closes or isolates a circuit and has no short circuit or overload protection. May also be identified as a 'ground fault switch'.
VARISTOR	A high voltage surge protection device.
USERDEFINED	User-defined type.
NOTDEFINED	Undefined type.

Formal representations

XML Specification

 <xs:simpleType name="IfcProtectiveDeviceTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="circuitbreaker"/>

   <xs:enumeration value="earthleakagecircuitbreaker"/>

   <xs:enumeration value="earthingswitch"/>

   <xs:enumeration value="fusedisconnector"/>

   <xs:enumeration value="residualcurrentcircuitbreaker"/>

   <xs:enumeration value="residualcurrentswitch"/>

   <xs:enumeration value="varistor"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcProtectiveDeviceTypeEnum = ENUMERATION OF (

 CIRCUITBREAKER, 
 EARTHLEAKAGECIRCUITBREAKER, 
 EARTHINGSWITCH, 
 FUSEDISCONNECTOR, 
 RESIDUALCURRENTCIRCUITBREAKER, 
 RESIDUALCURRENTSWITCH, 
 VARISTOR, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

Item	SPF	XML	Change
IFC2x3 to IFC4
IfcProtectiveDeviceTypeEnum
EARTHLEAKAGECIRCUITBREAKER			ADDED
EARTHINGSWITCH			ADDED
EARTHFAILUREDEVICE	X	X	DELETED

	Protective Device Type Enum
	Enumération des types d'équipement de protection