Planning with SIVACON 8 PS - Siemens

Planning with LXA/LXC5.2 System componentsThe LX busbar trunking system is used for both power transmission and distribution. Thesystem is characterised by high flexibility as it is not tied to a specific position and isparticularly suitable for power distribution in multi-storey buildings. The high degree ofprotection up to IP55 and tap-off units up to 1250 A also ensure reliable power supply inindustrial applications with high power requirements.5.2 System components5.2.1 Preliminary technical descriptions for specificationsBasic description busbar trunking systems 800 A to 6300 ABusbar trunking systems shall be supplied and installed as ready-to-use type-testedlow-voltage switchgear assemblies (TTA).The following descriptions are part of the costing and contracts process. They must beconsidered when specifying individual systems and equipment, even if they are notsubsequently referred to in more detail.The busbar trunking system has to be suitable for power transmission, e.g. betweentransformer and low-voltage main distribution board, and power distribution in the form of apower supply, as well as for horizontal and vertical installation.The busbar trunking system must comprise listed system components such as:● Straight trunking units with and without tap-off points● Feeder units for incoming transformer, distribution board and cable connection units● Junction units with elbow, offset elbow, knee, offset knee, Z units and T units● Tap-off unitsAll units must be available ex-works in standard lengths and optional lengths. It is notpermitted to set up flexible junction units and junction units using cable connections.Expansion units and fixed points must be planned as per requirements.Plug-in tap-off units are connected to the tap-off points on the trunking units as required. Itmust be possible to select the number and position of tap-off points. 10 tap-off points mustbe possible every 3 m. It shall be possible to mount and remove the plug-in tap-off unitswhilst live; the units shall also be protected against mistakes being made during installation(180° anti-rotation feature). It shall only be possible to mount and remove tap-off units forpermanent installation at zero potential; the units shall also be protected against mistakesbeing made during installation (180° antio-rotation feature). Zero load during removal of botha plug-in and a bolt-on tap-off unit must be ensured either through a compulsory sequence ofoperations or cautionary instructions.If required, it must be possible to fit the busbar trunking system with an asbestos-freefireproof barrier for wall or ceiling mounting which is compliant with fire resistance classS120.The enclosure is made from aluminium and shall be paint-finished in RAL 7035 (light grey).The cross section of the trunking units must not exceed the dimensions specified in thePlanning with SIVACON 8 PS148 Planning Manual, 10/2007, A5E01541101-01