A complete JINDA Series JLR-1500IIsystem consists of a power control unit, welding gun, a combination welding and control cable and a ground cable with clamp.

The power/control unit is designed for welding 3 mm through 6 mm diameter weld base studs. The power/control unit is a transformer -rectifier type power source with built-in controls. A semiconductor control rectifier SCR components are used in the capacitor voltage charge control and also a SCR in discharging control for the weld voltage. The unit is equipped with a protection circuit which will interlock two SCR to avoid at same time trigger two SCR.

You could see it's detail suitable specifications of JLR-1500 as follows:

Stud Range: M3-M8
Duty Cycle: 12PCS/min
Weight: 42Kg
Case Dim.: 523x300x430
Power Source: 220V50Hz
Charge Voltage: 30-180V Stepless
Input Power: 800VA.