Ri4Power Distribution busbar section The distribution busbar section with a vertically routed distri- bution busbar system can only be fitted with a distribution busbar system of an identical design to the main busbar system. Furthermore, this section type is only possible for low-voltage systems with a main busbar system in the roof or base section. For Flat-PLS busbar systems, however, variation in the con- figuration of busbars in terms of quantity and cross-section is admissible. The following table shows the admissible combinations of main and distribution busbar systems in this section type: Table 11: Selection of distribution busbar system in the distribution busbar section Main busbar system Possible distribution busbar systems Minimum section width Maxi-PLS 1600 Maxi-PLS 1600 Maxi-PLS 2000 200 mm Maxi-PLS 2000 Maxi-PLS 2000 Maxi-PLS 1600 200 mm Maxi-PLS 3200 Maxi-PLS 3200 – 200 mm Flat-PLS 60 Flat-PLS 60 – 300 mm Flat-PLS 100 Flat-PLS 100 – 400 mm For dimensioning of the distribution busbar section with a For the rated current Inc of the distribution busbar system, vertically routed distribution busbar system, the following the specified rated values should be applied for use as parameters must be known: a main busbar system, with due regard for the enclosure Model and configuration of the main busbar system protection category and cooling. The rated current Inc which the vertical distribution busbar The detailed configuration of the distribution busbar sections system must be able to carry under the chosen conditions The protection category of the enclosure and type of may be found in the valid Ri4Power assembly instructions. cooling The required short-circuit withstand capacity of the distribution busbar system When designing the short-circuit withstand capacity for the distribution busbar system, it is admissible according to the standard to reduce the short-circuit withstand capacity com- pared with the main busbar system, so that it is still greater than the on-state values of the protective devices connected downstream. 2 - 57 Rittal Technical System Catalogue/Power distribution
Technical System Catalogue Ri4Power
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