DC VOLTAGE SWITCH Russian patent published in 2019 - IPC H03K17/16 H01H33/59 H01H9/54 

FIELD: electricity.

SUBSTANCE: invention relates to switching of DC voltage circuits. DC voltage switch has first and second connector for series connection to first pole of DC voltage network, wherein between the connectors the secondary current circuit is propagated, which includes a semiconductor switch, and in parallel to the secondary current circuit a working current circuit is installed, which includes a mechanical switch and in series with it the winding of the primary side of the transformer, secondary winding of the transformer is connected between the voltage source and the third connector for tapping into the second pole of the DC voltage network, between the voltage source and the third connector in series with the secondary side of the transformer there is a switch, the voltage source through the diode and the charging resistance is connected to the first connector. There is a control device for activating the switch, which is made so that after opening of the mechanical switch, repeatedly determine voltage of the voltage source and switch the switch with intervals so that certain voltage remains below the specified threshold value.

EFFECT: provision for disconnection of direct current of energy removal, inductively accumulated in DC voltage network.

12 cl, 2 dwg