three-phase input phase lacking protection circuit of power frequency charger

• Main Authors: YAN WEIREN, GUAN WENMING
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a three-phase input phase lacking protection circuit of a power frequency charger. The three-phase input phase lacking protection circuit comprises a detection circuit, a control module and a display module, wherein the detection circuit is used for detecting three-phase input voltage of a power supply of the power frequency charger; if any one of the three phase input voltage lacks of phase, the detection circuit outputs a phase lacking warning signal; the control module receives the phase lacking warning signal output by the detection circuit and cutting off the input end of the power frequency charger; the display module is connected with the control module and is used for displaying a phase lacking fault code and indicating phase lacking line. When any one of the three phase input voltage lacks of phase, the detection circuit outputs the phase lacking warning signal. The control module timely cuts off the input end of the three-phase power frequency charger after receiving the war