Electrostatic coating cable maintenance device

摘要

A time period required for replacement work of a divided cable is shortened. An electrostatic coating cable (6) includes a power supply line (12) that supplies power to a high voltage generator (2), a signal line (14) that controls the high voltage generator (2), and a ground line (16). The power supply line (12) and the ground line (16) are connected by a first inspection line (18), the signal line (14) and the ground wire (16) are connected by a second inspection line (20), a first diode (22) is interposed in the first inspection line (18), and a second diode (24) is interposed in the second inspection line (20). The first and the second diodes (22) and (24) inhibit a current from flowing through the first and the second inspection lines (18) and (20) during an operation of the electrostatic coater (1). The first and the second inspection lines (18) and (20) and the first and the second diodes (22) and (24) are contained in a cable connecting section (8) that connects divided cables (10) adjacent to each other. During stoppage of the electrostatic coater (1), a voltage for inspection is applied to the ground line (16).

主权项

1. 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,
wherein in a plurality of lines that configure the power supply line, the signal line and the ground wire, two lines having a potential difference during an operation of the electrostatic coater are set as a pair, and the two lines that configure each pair are connected by an inspection line, a diode is interposed in the inspection line, and the diode inhibits a current from flowing between the two lines during the operation of the electrostatic coater, the electrostatic coating cable maintenance device comprises faulty divided cable identifying means that, during stoppage of the operation of the electrostatic coater, applies a voltage to the inspection line connecting the two lines of each pair to pass a current through the inspection line, detects feedback signals that return from the respective two lines, and identifies the divided cable which is brought into a state immediately before breakage based on abnormality of the feedback signals, and the inspection line and the diode are disposed in a cable connecting section that connects the divided cables adjacent to each other.