Planning with SIVACON 8 PS - Siemens

Planning with LDA/LDC4.2 System components4.2.11.1 Tap-off units with fuse switch disconnectorRated currentsTap-off units from 125 A to 630 A are available for selection. 1 x NH 00 or 2 x NH 00 fusescan be installed in the 125 A design.The compact dimensions mean that only one enclosure size is required for all rated currentranges.Operator controlThe tap-off units with fuse switch disconnector are operated by hand using a swivelmechanism.Degree of protectionThe standard degree of protection is IP30. IP54 degree of protection can be provided as anoption.Degree of protection IP30Degree of protection IP54Cable compartment/cable entryA bolted connection is used for cables with cross sections up to 2 x 240 mm 2 . In thestandard version, the cable entry is on the front face. Adding a cable compartment enablescable entry from the side. The cables are routed via an integrated cable propping bar in thetap-off unit (cleats to be provided by the customer). The sectional flange plate facilitates thelaying of the cables.Opening the tap-off unitDo not open the cable compartment cover until you have removed the fuse switchdisconnector handle and, consequently, the fuse. This will ensure that the cablecompartment is voltage-free when the cover is removed. The part of the contact device in thefront of the tap-off unit is "finger-proof".Type designationThe type designation for tap-off units with NH fuse switch disconnectors is: LD-.AK/3ST...Planning with SIVACON 8 PS122 Planning Manual, 10/2007, A5E01541101-01