| 摘要 |
PURPOSE:To recognize the connecting states of by-pass wires to insulating wires properly with a handy means by a method wherein a display lamp is lit in the case of normal connection, and wherein a buzzer is worked to generate noise in the case of error connection, and wherein the state of extinguished light is kept in the case of poor connection. CONSTITUTION:When by-pass wires 3C-5C are normally connected, then by voltage generated between the respective by-pass wires 3C-5C, display lamps 21-24 on the side of a load and on the side of a power source are lit. When the by-pass wires 3C-5C are abnormally connected, then by voltage generated on the by-pass wires 3C-5C, buzzers 18-20 function to generate noise, and erroneous connection of the by-pass wires 3C-5C is alerted. When the by-pass wires 3C-5C are connected to in a poor state, then the voltage is not generated between the respective by-pass wires 3C-5C, and the display lamps 21-24 are not lit, and the state of extinguished light is kept, and the poor connection of the by-pass wires 3C-5C can be recognized. As a result, connecting situation can be properly recognized. |
