IFC 4.3.0.1 (IFC4X3) development

7.4.4.51 Pset_ProtectiveDeviceTrippingFunctionICurve

7.4.4.51.1 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 instantaneous time protection (I-curve) of an electronic protection device.

7.4.4.51.2 Applicable entities

7.4.4.51.3 Properties

Name Property Type Data Type Description
IsSelectable IfcPropertySingleValue IfcBoolean

Indication whether something can be switched off or not.

NominalCurrentAdjusted IfcPropertySingleValue IfcBoolean

An indication if the tripping currents of the short time protection is related to the nominal current multiplied with the actual setting of the current adjustment, if any, of the long time protection part of the protective device, or not.

ReleaseCurrent IfcPropertySingleValue IfcElectricCurrentMeasure

The release current in [x In] for the initial tripping of the S-function.

ReleaseTime IfcPropertySingleValue IfcTimeMeasure

The release time in [s] for the initial tripping of the relevant part. This time indicates that for current lower than the indicated release current, the tripping time will be longer than the indicated release time. The value is given as a mean value.

CurrentTolerance1 IfcPropertySingleValue IfcPositiveRatioMeasure

The tolerance for the current of time/current-curve in [%].

CurrentToleranceLimit1 IfcPropertySingleValue IfcTimeMeasure

The time limit in [s] limiting the application of CurrentTolerance1, if any. If the value is set to 0, the value of the CurrentTolerance1 is valid for the whole time/current-curve.

CurrentTolerance2 IfcPropertySingleValue IfcPositiveRatioMeasure

The tolerance for the current of time/current-curve in [%] valid for times above CurrentTolereanceLimit1.

IsCurrentTolerancePositiveOnly IfcPropertySingleValue IfcBoolean

Indication whether the value of CurrentTolerance1 is provided as a positive tolereance only or not. If not, the value is proved as a pluss/minus tolerance.

TimeTolerance1 IfcPropertySingleValue IfcPositiveRatioMeasure

The tolerance for the time of time/current-curve in [%].

TimeToleranceLimit1 IfcPropertySingleValue IfcElectricCurrentMeasure

The current limit in [x In] limiting the application of TimeTolerance1, if any. If the value is set to 0, the value of the TimeTolerance1 is valid for the whole time/current-curve.

TimeTolerance2 IfcPropertySingleValue IfcPositiveRatioMeasure

The tolerance for the time of the time/current-curve in [%] valid for currents above TimeToleranceLimit1.

IsTimeTolerancePositiveOnly IfcPropertySingleValue IfcBoolean

Indication whether the value of TimeTolerance1 is provided as a positive tolereance only or not. If not, the value is proved as a pluss/minus tolerance.

MaxAdjustmentX_ICS IfcPropertySingleValue IfcElectricCurrentMeasure

Provides the maximum setting value for the available current adjustment in relation to the Ics breaking capacity of the protection device of which the actual tripping unit is a part of. The value is not asserted unless the instantaneous time protection is.

IsOffWhenSFunctionOn IfcPropertySingleValue IfcBoolean

Indication whether the I-function is automatically switched off when the S-function is switched on.

Table 7.4.4.51.A

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7.4.4.51.4 Changelog

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