Application and features: Output voltage, RMS 8 v ~ 135 v AC With monitoring the welding current, interrupt abnormal function of the welding process. Automatic voltage regulator, power supply voltage, the more limited protection. Welding automatic temperature compensation to the environment. Chinese menu, easy to operate. Automatically save the state of welding process parameters, it can be to remove welding records, print, U disk is derived. Systems that can perform self-check, common failures in Chinese hints. The main parameters: Model SD-EF315 The power supply voltage 220V/380V±20V 50HZ AV The output voltage RMS 8v135V AC The output power 3.5KW Maximum welding range 315mm The environment temperature -15+50 Time range 19999 seconds Time resolution 1 seconds Time precision 0.1% The output voltage accuracy ±1% Store the data 500article Data interface Support the printer interface and RS232 interface, usb interface