How is the secondary current of spot welding (resistance welding) measured?
Do not test, the general spot welding machine current is 0-99, all can be adjusted
On the spot of the welding machine, a high current measuring instrument with resistance welding can be used to detect the secondary short circuit current (direct contact of electrodes) or welding current (the workpiece is inserted between electrodes) and the power on time. Resistance welding current measuring instrument is a special instrument, by induction coil in the secondary circuit of the electromagnetic signal acquisition (sensor) through the instant power, and then through the conversion circuit, with digital display the current value and time value
General machine comes with current monitoring function, if you feel the current monitoring is not accurate, you can test the external welding monitor, the more Miki company is the production of MM-370B, MM-380A, MM-122A and several, can choose according to their own needs to.The measuring principle and current transformer, the secondary circuit let through a coil, the secondary loop through the current will be induced in the circle, through the reduction of monitor control loop, current can get a secondary value.
