Display Let-Through Current (Ic) Let-Through Energy; T) Characteristics - Eaton xSpider Benutzerhandbuch

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9.11 Display let-through current (Ic) let-through energy (I
Let-through current characteristics (Ic) and let-through energy (I
devices (see part I. Theoretical introduction, Chap. 5.4 for details). Let-through current characteristic (Ic) plays
important role for example in case of low voltage switchboard assemblies. In case the peak current (Ic) in the
switchboard does not exceed value 17kA, it is not necessary to make design verification of short circuit withstand
strength according to clausula 10.11 of IEC/EN 61439-2.
1. We assume that the window with the module of tripping characteristics is shown (see Chap. 9).
2. Enter the tripping characteristics of all protection devices whose Ic or I
Chapter 9.3).
3. Click on icon Let-through current and Let-through energy.
4. In subsequently opened dialogue panel click on button:

Click on button Yes to display let-through current (Ic) characteristic.

Click on button No to display let-through energy (I
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2

t) characteristics

2
t) characteristics display features of current limiting
2 t) characteristic.
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t charts you want to display (see