In Belgium, according to the General Regulation on Electrical Installations, the maximal disconnection time in LV installations for a given fault voltage is i.a. depending on the external influence BB and given in table 2.4 of Book 1:

In Belgium, according to the General Regulation on Electrical Installations, the maximal disconnection time in LV installations for a given fault voltage is i.a. depending on the external influence BB and given in table 2.4 of Book 1:
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