| 摘要 |
PURPOSE:To safely and speedy confirm the charged voltage of a capacitor by connecting the normally closed contact of an electromagnetic contactor to the minus side of an inverter device. CONSTITUTION:A capacitor C1 is regularly charged by the main contact 10T1 and rush current limiting resistance R1 of a running contactor. As the capacitor C1 is charged to about 370 V, the prevention of an electric shock should be sufficiently taken into consideration. Thus, a converter COV, an inverter INV, the capacitor C1, and a fin FiN installed to a CP are mounted on the inside of an electric shock preventing cover CP. One side of the normally closed contact 1OT3 of the running contactor is connected to the minus side of the inverter INV, whereby the voltage can be measured between the main contact of the running contactor and the normally closed contact T1 of the running contactor can be measured at the time of maintenance and inspection. |
