Utbyte av lågspänningsställverk hos SSAB Borlänge : En förstudie

Sammanfattning: The title of this preliminary study is replacement of low voltage switchgear at SSAB Borlänge. It contains of documentation of existing switchgear from the point of supply located in Domnarvets high voltage switchgear to SSAB's low voltage distribution switchgear. The new switchgear busbar system was dimensioned according to the calculation of the three-phase short-circuit current at the connection point. The manual calculations were verified using the  network calculation programs. A technical specification including grounding systems, protection devices and risk assessment was established. Replacement of transformers was suggested including dimensioning calculations, sectioning of loads due to interferences and new location.