IFC 4.3.1.0 (IFC4X3_ADD1) development

BreakerUnitCurve

Semantic definition

A curve that establishes the let through energy of a breaker unit when a particular prospective current is applied. Note that the breaker unit curve is defined within a Cartesian coordinate system and this fact must be asserted within the property set:

(1) Defining value: ProspectiveCurrent: A list of minimum 2 and maximum 16 numbers providing the currents in [A] for points in the current/I2t log/log coordinate space. The curve is drawn as a straight line between two consecutive points. (2) Defined value: LetThroughEnergy: A list of minimum 2 and maximum 16 numbers providing the let-through energy, I2t, in [A2s] for points in the current/I2t log/log coordinate space. The curve is drawn as a straight line between two consecutive points.

Referenced in
Pset_ProtectiveDeviceBreakerUnitI2TCurve
Table 655174a7-22f9-4a18-95a4-0acbf6c77506

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