MECHANICAL INTERLOCKING UNIT FOR DISCONNECTOR AND GROUNDING SWITCH Russian patent published in 2018 - IPC H01H9/26 

FIELD: electrical engineering.

SUBSTANCE: invention relates to a mechanical interlocking unit for a disconnector and a grounding switch comprising a main locking disc for enabling the movable contact of disconnector (11), and at least one earthing switch locking disc for enabling the respective movable contact of at least one grounding switch (12, 13), respectively. Main locking disc comprises at least one first cutout, and each of the at least one locking disc of the grounding switch comprises a third cutout, while a movable locking bar is installed between the main locking disc and each locking disc of the grounding switch, respectively. This interlocking unit can block the disconnector and at least one grounding switch has a simple and efficient design, low cost and versatility for use on various devices. Additional mechanical interlocking unit is also provided to block another disconnector and at least one of said grounding switches.

EFFECT: technical result is to provide a visible break in the circuit to ensure reliable isolation of electrical installations from power lines.

16 cl, 16 dwg