7.4.4.49 Pset_ProtectiveDeviceTrippingCurve
7.4.4.49.1 Semantic definition
Tripping curves are applied to thermal, thermal magnetic or MCB_RCD tripping units (i.e. tripping units having type property sets for thermal, thermal magnetic or MCB_RCD tripping defined). They are not applied to electronic tripping units.
7.4.4.49.2 Applicable entities
7.4.4.49.3 Properties
| Name | Property Type | Data Type | Description | |
|---|---|---|---|---|
| TrippingCurveType | IfcPropertyEnumeratedValue | PEnum_TrippingCurveType |
The type of tripping curve that is represented by the property set. |
|
| TrippingCurve | IfcPropertyTableValue | IfcTimeMeasure/IfcElectricCurrentMeasure |
A curve that establishes the release time of a tripping unit when a particular prospective current is applied. Note that the tripping curve is defined within a Cartesian coordinate system and this fact must be asserted within the property set: (1) Defining value is the Prospective Current which is a list of minimum 2 and maximum 16 numbers providing the currents in [x In] for points in the current/time log/log coordinate space. The curve is drawn as a straight line between two consecutive points. (2) Defined value is a list of minimum 2 and maximum 16 numbers providing the release_time in [s] for points in the current/time log/log coordinate space. The curve is drawn as a straight line between two consecutive points. Note that a defined interpolation. |