What is the output of a welding transformer?
What is the output of a welding transformer?
A transformer-style welding power supply converts the moderate voltage and moderate current electricity from the utility mains (typically 230 or 115 VAC) into a high current and low voltage supply, typically between 17 and 45 (open-circuit) volts and 55 to 590 amperes.
How much voltage does a welder put out?
Common AC/DC “stick welders” usually have 220 volt AC input voltage with output ranging from 35 volt DC/60 amp/hr to 85 volt DC/160 amp/hr.
What is the output voltage of inverter welding machine?
Output voltage: 28V. Output current range: 10 to 200A. Protection class: IP21.
What should be the voltage of a welding transformer?
The open circuit voltage should not normally exceed 80 volts and in no case 100 volts. 4. The output current should be controllable continuously over the full available range. 5. The open circuit voltage should be just sufficiently high for ready initiation of an arc and not too high to impair the economics of welding.
What makes a welding transformer a step down transformer?
A welding transformer is a step down transformer that has thin primary winding with a large number of turns and its secondary has more area of cross-section and less number of turns ensuring less voltage and very high current in the secondary.
How is the reactance of a welding transformer affected?
Control of current in high-reactance welding transformers can be affected by three methods. One of them involves a moving primary coil as shown in Fig. 4.12. As the spacing between the windings is varied so does the reactance and hence the output welding current.
What is the phase difference in a welding circuit?
For maintaining a sustained ac arc the welding circuit should contain an inductance* which would produce a phase difference, between the voltage and current transients, of the order of 0-35 to 0-45. When welding with low currents, the cathode loses more heat than when welding with high currents.