Planning with SIVACON 8 PS - Siemens

Planning with LXA/LXC5.2 System components5.2.9 Connection unit for transformers and distribution boardsThe wide variety of transformer types reflects the variety of rated currents and the differentphase sequences and clearances.This type variety requires high flexibility as regards transformer connection in busbartrunking systems.The universal connection unit can also be used to connect distribution boards.For LX busbar trunking systems up to 6300 A, transformer connection units are availablewith busbar connection on the side (LX.....-AS.) and on the top (LX.....-AS.-T.).Busbar connection on the sideBusbar connection on the topaThe total length is calculated from the phase clearances of the connection units to be planned(approx. 3 x phase clearance + 300 mm)Type of connection unit Selectable phase clearance Possible phase sequencesLX.....-AS1(-T)115...400 mmL1, L2, L3, N (PEN)LX.....-AS3(-T)405...750 mmN (PEN), L3, L2, L1L3, L2, L1, N (PEN)N (PEN), L1, L2, L3LX.....-AS2(-T) 450...750 mm L1, L2, N (PEN), L3L3, N (PEN), L2, L1L3, L2, N (PEN), L1L1, N (PEN), L2, L3Planning with SIVACON 8 PS160 Planning Manual, 10/2007, A5E01541101-01