WHAT IS WELDING TRANSFORMER?
- IT IS A STEP DOWN TRANSFORMER USED TO REDUCE THE VOLTAGE APPROXIMATELY 15V - 45V TO PRODUCE THE CURRENT OF 200- 600AMPS IN SECONDARY WINDING,
- PRIMARILY WINDING->THIN WIRE AND MORE TURN(BECAUSE LOW CURRENT THIN WIRE CAN CARRY)
- SECONDARY WINDING ->THICK WIRE LESS TURN(HIGH CURRENT IS PROVIDED)
CONSTRUCTION OF WELDING TRANSFORMER?
- It is a auto Transformer
- It has a magnetic field core with primary winding which is thin wire and large number if turn.
- A secondary winding with less turn thick wire.
- Due to this arrangement its a step down Transformer.
- So we get less voltage and high current output.
- DC WELDING TRANSFORMER is also same working like ac welding Transformer. But in dc welding Transformer rectifier is provided to convert ac, in out put of secondary winding.
- Also connect a indictor or filter to get the smooth dc current,
- This is the construction of welding Transformer.
(Please check the image)
Working of welding Transformer?
- Its is the step down Transformer so we get les Voltage and high current.
- Which is near 15 to 45v and 200amp to 600amp
- For adjusting the voltage on secondary side there are topping on secondary winding by this we can get required amount nog secondary current for welding.
- Topping are connected to several High current switches,
- welding electrodes and the other end is connected to welding piece.
- When a high current flow in a large amount of I2.R, heat is produced due to contact resistance between welding piece and electrode.
- Because of this High heat tip of the electrode melted and fill the gaps between welding piece.
