Automatic switching device for multi-channel insulation and voltage-withstanding tests

The multichannel automatic switching device for the insulation and voltage resistance test is provided with a single-chip microcomputer unit, a drive circuit and a channel interface. Wherein one end of the driving circuit is connected with the single chip microcomputer unit, a longitudinal power supply channel H and a transverse protection channel G in the driving circuit are respectively connected with a chip U2 in the single chip microcomputer unit, and transverse interface channels L in the driving circuit are connected with interfaces in channel interfaces in a one-to-one correspondence manner; wherein the insulation voltage-withstanding tester and the tested equipment are respectively inserted into corresponding interfaces in the channel interface, the insulation voltage-withstandingtester is connected with the tested equipment through the channel interface, and a chip U1 in the single chip microcomputer unit is in communication connection with the upper computer through a serialport. Therefore, the purp