TWI598922B

• Main Authors: YU, HSIEN PENG, LAI, CHING MING, TSAI, WEN FU, WANG, SHIH HSIN, LIU, WEI CHIH
• Format: Patent
• Language: Chinese
• Published: 11.09.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; RELAYS; SELECTORS; TESTING

A capacitor trip device includes an AC-DC conversion circuit, a capacitance value detecting circuit, a capacitor bank and a warning circuit. The AC-DC conversion circuit is used to convert an AC power to a DC power and output. The capacitance value detecting circuit is electrically connected to the AC-DC conversion circuit for receiving the DC power. The capacitor bank and the warning circuit are electrically connected to the capacitance value detecting circuit. When the capacitance value detecting circuit is not actuated, the capacitor bank receives the DC power stored energy through the capacitance value detecting circuit; when the capacitance value detecting circuit is actuated, the electrical connection between the capacitor bank and the AC-DC conversion circuit is cut off and the capacitor bank is discharged, and the capacitor bank is detected if its voltage is lower than a rated value after the discharge, if the voltage is lower than the rated value, then generate an error signal to the warning circuit