I don´t know if this is the correct section on the forum but i will post it here.
As the tittle says i own a mig welder machine than also do mma and as chinese welders are renowned to have fanatics amperage and voltages numbers on the lcd display. As i need of mma at least set the correct amperage i need to put the welder under load so i can use the trimpot to set the correct number or at least a nearby number. As voltage goes i set the lcd with the multimeter using the volt scale on the idle voltage on the mma mode. as the lcd of the welder doesn´t have decimal houses i could only turn it down from 54v to 51v the reading was 51,5.
For the amperage i could try to weld a 2mm rod and see how much does the reading on the lcd matches the clamp meter (its a digital true rms one i don´t know if it is trust worty). The correct way was with a ballast resistor but i can find one for a 160 amp welder. i read somewhere i can fill a bucket of salt water and connect throw a resister wire the positive and negative cables. Can anyone tell me if this is possible?
My welder has a sticker that give the mig 40 to 250 amps and mma from 20 to 170 amps, but....
the sensor on the output rectifier board is only rated at 180/u , besides it only has a four 40n60 igbts (40 amps * 4 =160 amps) and eight 92-02 diodes (20 amps*8 =160 amps) .
Can anyone help me out?
As the tittle says i own a mig welder machine than also do mma and as chinese welders are renowned to have fanatics amperage and voltages numbers on the lcd display. As i need of mma at least set the correct amperage i need to put the welder under load so i can use the trimpot to set the correct number or at least a nearby number. As voltage goes i set the lcd with the multimeter using the volt scale on the idle voltage on the mma mode. as the lcd of the welder doesn´t have decimal houses i could only turn it down from 54v to 51v the reading was 51,5.
For the amperage i could try to weld a 2mm rod and see how much does the reading on the lcd matches the clamp meter (its a digital true rms one i don´t know if it is trust worty). The correct way was with a ballast resistor but i can find one for a 160 amp welder. i read somewhere i can fill a bucket of salt water and connect throw a resister wire the positive and negative cables. Can anyone tell me if this is possible?
My welder has a sticker that give the mig 40 to 250 amps and mma from 20 to 170 amps, but....
the sensor on the output rectifier board is only rated at 180/u , besides it only has a four 40n60 igbts (40 amps * 4 =160 amps) and eight 92-02 diodes (20 amps*8 =160 amps) .
Can anyone help me out?