Patent ID: 9502881
Filing Date: 2016-11-22
CPC Classification: H01H,H02H,H02P

Claim Text:
1. A switchgear, comprising: a control unit; a supply connection; and a first current path including a first electromechanical switch and, connected in series to the first switch, a parallel connection of a second electromechanical switch with a semiconductor switch, wherein the control unit is configured to output a switching signal for the first switch, the second switch and the semiconductor switch, wherein, in the presence of a switching signal, the first and second switches are held in the closed switching state, and wherein the control unit is configured to draw the energy for the switching signals through the supply connection; wherein the control unit configured to monitor the energy supplied through the supply connection via the measuring device, and wherein, if energy supplied through the supply connection reaches a critical range, the control unit is configured to controls the output of the switching signals via the energy of the energy accumulator such that: in a first step, the semiconductor switch is switched to be electrically conducting and then the second switch is opened, and in a second step following the first step, the semiconductor switch is then switched to be electrically non-conducting, and thereafter the first switch is opened.