UA42562A - Device for arc welding - Google Patents

Abstract

A device for arc welding contains input diodes for connection to the power system, filters- capacitors, keys, an arc welding transformer, a capacitor, an output rectifier, a choke, terminals. The primary winding of arc welding transformer by one end through the capacitor is connected to the common point or keys connected in-serial and connected with one key to filter-capacitor and cathode of input diode for connection anode of this diode to phase of power system, and with another key – to another filter-capacitor and anode of another input diode for connection the cathode of this diode to another phase of power system. Another end of primary winding of arc welding transformer is connected to the common point of filter-capacitors connected in serial between them for connection this point to neutral conductor of the power system. The secondary winding of arc welding transformer is connected in parallel through the output rectifier and in-series through the choke to the terminals for connection with the arc space.