Operating method for MV or HV switchgear has normally closed current rail coupler between each 2 current rails opened during switchgear switching operation or upon fault

摘要

The operating method uses a current rail coupler (S2) between each 2 current rails (I,II) for the electrical switchgear, which is normally held in the closed position for providing an electrical connection between the current rails and which is opened during switching operation of the switchgear, or in response to a fault. The current rail coupler may be opened after opening a current rail switch (S1) ,inserted in one of the current rails between an energy supply block (EB) and an energy transfer block (TB). An Independent claim for an electrical switchgear is also included.