IFC 4.3.0.1 (IFC4X3) development

7.4.4.52 Pset_ProtectiveDeviceTrippingFunctionLCurve

7.4.4.52.1 Semantic definition

Tripping functions are applied to electronic tripping units (i.e. tripping units having type property sets for electronic tripping defined). They are not applied to thermal, thermal magnetic or RCD tripping units. This property set represent the long time protection (L-curve) of an electronic protection device

7.4.4.52.2 Applicable entities

7.4.4.52.3 Properties

Name Property Type Data Type Description
IsSelectable IfcPropertySingleValue IfcBoolean

Indication whether something can be switched off or not.

UpperCurrent1 IfcPropertySingleValue IfcElectricCurrentMeasure

The current in [x In], indicating that for currents larger than UpperCurrent1 the I2t part of the L-function will trip the current.

UpperCurrent2 IfcPropertySingleValue IfcElectricCurrentMeasure

The current in [x In], indicating the upper current limit of the upper time/current curve of the I2t part of the L-function.

UpperTime1 IfcPropertySingleValue IfcTimeMeasure

The time in [s], indicating that tripping times of the upper time/current curve lower than UpperTime1 is determined by the I2t part of the L-function.

UpperTime2 IfcPropertySingleValue IfcTimeMeasure

The time in [s], indicating the tripping times of the upper time/current curve at the UpperCurrent2.

LowerCurrent1 IfcPropertySingleValue IfcElectricCurrentMeasure

The current in [x In], indicating that for currents smaller than LowerCurrent1 the I2t part of the L-function will not trip the current,

LowerCurrent2 IfcPropertySingleValue IfcElectricCurrentMeasure

The current in [x In], indicating the upper current limit of the lower time/current curve of the I2t part of the L-function.

LowerTime1 IfcPropertySingleValue IfcTimeMeasure

The time in [s], indicating that tripping times of the lower time/current curve lower than LowerTime1 is determined by the I2t part of the L-function.

LowerTime2 IfcPropertySingleValue IfcTimeMeasure

The time in [s], indicating the tripping times of the upper time/current curve at the LowerCurrent2.

Table 7.4.4.52.A

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7.4.4.52.4 Changelog

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