Abstract: Aiming at the test method of arc fault detection device(AFDD),an arc fault waveform simulation device was developed.With mechanical arc generator,arc fault waveform database is established,and the waveform data in the database is restored by digital-analog conversion,signal isolation and power amplification,and upper computer platform,so that the action characteristics of AFDD can be tested.In this paper,a joint simulation environment was built by LabVIEW and Multisim to verify the feasibility of the program.Then,the hardware module was designed and the whole process of the arc fault waveform was realized with the host computer.

Key words: arc fault, waveform generation, signal isolation, power amplification