Prisma Plus LV Switchboards - POWERLAB

DistributionSystem G630 A multi-stage busbarsCatalogue numbersPresentationThe multi-stage busbars are installed in a300 mm wide duct.They are particularly useful for distribution totwo enclosures on each side of the duct.All connection points are easily accessiblefrom the front.The inclination of the bars facilitatesconnections and improves cable running.There are three and four-pole versions withratings from 160 to 630 A.Available in two lengths, 1000 and1400 mm, they can be cut as needed.PD390535CompositionFlat, copper bars with threaded M6 holes every 25 mm for connection along theentire length of the busbars. There are 8.2 mm diameter holes at each end for supply.The staggered supports are made of an insulating material.An optional, insulating, front barrier is available to protect against direct contact fromthe front.InstallationThe busbars are installed in a 300 mm wide duct for the enclosures.Connectionb 16 mm² to 50 mm² flexible cables, with crimped lugsb insulated flexible bars (see page 104).Electrical characteristicsb rated peak withstand current Ipk (kÂ)- 30 k for 160 A busbars- 40 k for 250 A busbars- 55 k for 400 A busbars- 55 k for 630 A busbarsb rated insulation level Ui = 750 V.Busbar calculationBusbar size and distance between supportsThe table below indicates:b the size of the bars to be used, depending on the permissible current level in thebusbarsb the distance between supports, depending on the rated short-time withstandcurrent (Icw).Rating (A) Size of bars (mm) Distance between support centres(mm)Icw (kA rms / 1 s)10 13 15 20 25160 15 x 5250 20 x 5400 32 x 5 450 300 300 (1)630 32 x 8(1) Icw (kA rms/0.6 s).102