Electrostatic Coating Cable Maintenance Device

An electrostatic coating cable maintenance device for identifying a divided cable that is brought into a state immediately before breakage out of a plurality of divided cables that configure an electrostatic coating cable that electrically connects an electrostatic coater containing a high voltage generator with a control panel that controls the electrostatic coater, the electrostatic coating cable including a power supply line that supplies power to the high voltage generator, a signal line and a ground line, and the power supply line or the signal line that configures the cable being brought into a state immediately before breakage, the electrostatic coating cable maintenance device comprising:

• a first inspection line that connects the ground line and the power supply line;
• a second inspection line that connects the ground line and the signal line;
• a first diode that is interposed in the first inspection line, and cuts off a flow of a current between the power supply line and the ground line during an operation of the electrostatic coater;
• a second diode that is interposed in the second inspection line, and cuts off a flow of a current between the signal line and the ground line during the operation of the electrostatic coater;
• a ground switch that is provided in the ground line, and can switch to a first mode that grounds the ground line, and a second mode that applies a voltage to the ground line;
• and
• faulty divided cable identifying means that, during stoppage of the operation of the electrostatic coater, detects feedback signals that return from the power supply line and the signal line when a voltage is applied to the ground line in a state in which the switch is switched to the second mode from the first mode, and identifies a divided cable which is brought into a state immediately before breakage based on abnormality of the feedback signals,
• wherein the first and the second inspection lines and the first and the second diodes are disposed in a cable connecting section that connects the divided cables adjacent to each other.

An electrostatic coating cable maintenance device for identifying a divided cable that is brought into a state immediately before breakage out of a plurality of divided cables that configure an electrostatic coating cable that electrically connects an electrostatic coater containing a high voltage generator with a control panel that controls the electrostatic coater, the electrostatic coating cable including a power supply line that supplies power to the high voltage generator, a signal line in which a signal at a potential with polarity opposite to polarity of the power supply line flows during an operation of the electrostatic coater, and a ground line, and the power supply line or the signal line that configures the cable being brought into a state immediately before breakage, the electrostatic coating cable maintenance device comprising:

• a third inspection line that connects the signal line and the power supply line during the operation of the electrostatic coater;
• a fourth inspection line that connects the signal line and the ground line during the operation of the electrostatic coater;
• a third diode that is interposed in the third inspection line, and cuts off a flow of a current between the power supply line and the signal line during the operation of the electrostatic coater;
• a fourth diode that is interposed in the fourth inspection line, and cuts off a flow of a current between the signal line and the ground line during the operation of the electrostatic coater;
• a ground switch that is provided in the ground line, and can switch to a first mode that grounds the ground line, and a second mode that applies a voltage to the ground line;
• and
• faulty divided cable identifying means that, during stoppage of the operation of the electrostatic coater, detects feedback signals that return from the power supply line and the ground line when a voltage is applied to the signal line in a state in which the switch is switched to the second mode from the first mode, and identifies a divided cable which is brought into a state immediately before breakage based on abnormality of the feedback signal,
• wherein the third and the fourth inspection lines and the third and the fourth diodes are disposed in a cable connecting section that connects the divided cables adjacent to each other.