IFC (IFC4X3_ADD1) development Pset_ProtectiveDeviceTrippingUnitTypeThermal Semantic definition

Information on tripping units that are thermally tripped. Applicable entities Properties

Name Property Type Data Type Description
ThermalTrippingUnitType IfcPropertyEnumeratedValue PEnum_ThermalTrippingUnitType

A list of the available types of thermal tripping unit from which that required may be selected.

I1 IfcPropertySingleValue IfcReal

The (thermal) lower testing current limit in [x In], indicating that for currents lower than I1, the tripping time shall be longer than the associated tripping time, T2.

I2 IfcPropertySingleValue IfcReal

The (thermal) upper testing current limit in [x In], indicating that for currents larger than I2, the tripping time shall be shorter than the associated tripping time, T2.

T2 IfcPropertySingleValue IfcTimeMeasure

The (thermal) testing time in [s] associated with the testing currents I1 and I2.

DefinedTemperature IfcPropertySingleValue IfcThermodynamicTemperatureMeasure

The ambient temperature at which the thermal current/time-curve associated with this protection device is defined.

TemperatureFactor IfcPropertySingleValue IfcRatioMeasure

The correction factor (typically measured as %/deg K) for adjusting the thermal current/time to an ambient temperature different from the value given by the defined temperature.

CurveDesignation IfcPropertySingleValue IfcLabel

The designation of the trippingcurve given by the manufacturer. For a MCB the designation should be in accordance with the designations given in IEC 60898.


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