Pole-mounted switch voltage signal measuring device and pole-mounted switch power-off control method

The embodiment of the invention discloses a pole-mounted switch voltage signal measuring device and a pole-mounted switch power-off control method. The pole-mounted switch voltage signal measuring device comprises a control unit, a pole-mounted switch, a pole-mounted switch controller and a voltage acquisition unit, the control unit and the voltage acquisition unit are arranged on the pole-mounted switch controller; the voltage acquisition unit comprises a first voltage amplification unit, an isolation unit and a second voltage amplification unit; the first voltage amplification unit is connected with the pole-mounted switch circuit; the isolation unit is in circuit connection with the first voltage amplification unit and the second voltage amplification unit; the control unit is in circuit connection with the second voltage amplification unit. The pole-mounted switch voltage signal measuring device is used for measuring the voltage signal output by the pole-mounted switch, so that the safety of a power trans