Line verification device, and line verification method

A circuit check device for checking connection normality of a pair of electric wires not connected to a load device, the pair of electric wires comprising a first electric wire and a second electric wire, the device comprising:

• a charger configured to charge the pair of electric wires;
• a first voltmeter configured to measure a first inter-wire potential difference between a first end of an electric wire portion of the first electric wire and a first end of an electric wire portion of the second electric wire;
• a second voltmeter configured to measure a second inter-wire potential difference between a second end of the electric wire portion of the first electric wire and a second end of the electric wire portion of the second electric wire;
• a first connection terminal connected to the first end of the electric wire portion of the first electric wire and the first end of the electric wire portion of the second electric wire;
• a second connection terminal connected to the second end of the electric wire portion of the first electric wire and the second end of the electric wire portion of the second electric wire;
• a third connection terminal connected to the second connection terminal;
• and
• a determiner, comprising a circuitry, configured to determine whether the measured first inter-wire potential difference matches with the measured second inter-wire potential difference,
• wherein the first voltmeter is connected to the first end of the electric wire portion of the first electric wire and the first end of the electric wire portion of the second electric wire through the first connection terminal,
• wherein the second voltmeter is connected to the second end of the electric wire portion of the first electric wire and the second end of the electric wire portion of the second electric wire through the third connection terminal, and
• wherein the determiner is configured to determine that, (i) based on the first inter-wire potential difference matching the second inter-wire potential difference, connection between the first electric wire and the second electric wire is normal and, (ii) based on the first inter-wire potential difference not matching the second inter-wire potential difference, the connection between the first electric wire and the second electric wire is abnormal.

A circuit check method in a circuit check device for checking connection normality of a pair of electric wires comprising a first electric wire and a second electric wire, the method comprising:

• based on the pair of electric wires being connected to a load device,
• measuring, by a first voltmeter, a first inter-wire potential difference between a first end of an electric wire portion of the first electric wire and a first end of an electric wire portion of the second electric wire;
• measuring, by a second voltmeter, a second inter-wire potential difference between a second end of the electric wire portion of the first electric wire and a second end of the electric wire portion of the second electric wire;
• determining, by a circuitry, whether the measured first inter-wire potential difference matches with the measured second inter-wire potential difference;
• and
• determining that, (i) based on the first inter-wire potential difference matching the second inter-wire potential difference, connection between the first electric wire and the second electric wire is normal and, (ii) based on the first inter-wire potential difference not matching the second inter-wire potential difference, the connection between the first electric wire and the second electric wire is abnormal
• wherein a first connection terminal is connected to the first end of the electric wire portion of the first electric wire and the first end of the electric wire portion of the second electric wire,
• wherein a second connection terminal is connected to the second end of the electric wire portion of the first electric wire and the second end of the electric wire portion of the second electric wire,
• wherein a third connection terminal is connected to the second connection terminal,
• wherein the first voltmeter is connected to the first end of the electric wire portion of the first electric wire and the first end of the electric wire portion of the second electric wire through the first connection terminal, and
• wherein the second voltmeter is connected to the second end of the electric wire portion of the first electric wire and the second end of the electric wire portion of the second electric wire through the third connection terminal.