IFC 4.3.0.1 (IFC4X3) development

7.4.4.57 Pset_ProtectiveDeviceTrippingUnitTypeElectroMagnetic

7.4.4.57.1 Semantic definition

Information on tripping units that are electrically or magnetically tripped.

7.4.4.57.2 Applicable entities

7.4.4.57.3 Properties

Name Property Type Data Type Description
ElectroMagneticTrippingUnitType IfcPropertyEnumeratedValue PEnum_ElectroMagneticTrippingUnitType

A list of the available types of electric magnetic tripping unit from which that required may be selected. These cover overload, none special, short circuit, motor protection and bi-metal tripping.

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.

I4 IfcPropertySingleValue IfcReal

The lower electromagnetic testing current limit in [x In], indicating that for currents lower than I4, the tripping time shall be longer than the associated tripping time, T5, i.e. the device shall not trip instantaneous.

I5 IfcPropertySingleValue IfcReal

The upper electromagnetic testing current limit in [x In], indicating that for currents larger than I5, the tripping time shall be shorter than or equal to the associated tripping time, T5, i.e. the device shall trip instantaneous.

T5 IfcPropertySingleValue IfcTimeMeasure

The electromagnetic testing time in [s] associated with the testing currents I4 and I5, i.e. electromagnetic tripping time

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.

Table 7.4.4.57.A

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7.4.4.57.4 Changelog

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