Earth cable 10m 500 A Pro 120mm2

Using electrolytic copper with a 120 mm2 cross section in the PRO series is the key to removing any unwanted rise in active resistance when welding over the extreme distance of 10 metres. At 500A the current density spreads across a very large conductor area, which keeps the cable from heating up sharply even during multi shift continuous work. The physics of this keeps arc voltage stable, which is critical for constant heat input in the weld and for avoiding spatter in spray transfer. The copper core is a dense braid of thousands of fine wires, so despite its large diameter the cable stays flexible enough to handle on the shop floor. With the PRO series you can be sure that electrical energy reaches the joint instead of being wasted as heat in the cable. This is the reliability base for professional high power inverters and gives them good working conditions without the risk of overheating the rectifier bridges.

H01N2-D insulation made of high density chloroprene rubber is the standard of durability in the harshest industrial conditions, where resistance to mechanical damage counts. The material is remarkably indifferent to oils, greases and direct contact with hot weld spatter, which removes the risk of electrical breakdown while the cable is dragged across the shop. The physical strength of the insulation prevents cracking under UV radiation and ozone, which is key to long term service protection of the electronics in equipment used outdoors. The jacket stays flexible even at sub zero temperatures, which makes coiling such a thick accessory much easier at the end of a shift. The sheath is self extinguishing, which raises fire safety at the workplace and protects the engineering support of the process against accidental short circuits. Choosing this insulation class guarantees a long life for the heavy core by cutting off corrosive agents and moisture from an aggressive workshop environment.

The PRO cable is finished with a massive earth clamp cast from highly conductive brass, which sharply raises the efficiency of the earth point at 500A. Brass has far better thermal and electrical conductivity than copper plated steel, so it removes the risk of burning spots into the surface of the workpiece and ruining the part. A strong spring with a hard clamping characteristic secures a firm mechanical connection and prevents side sparking at the earth to part contact, which could otherwise destabilise the arc. The 120 mm2 cable is joined to the clamp through a thick walled copper ferrule, which keeps the joint current rated even under heavy resistive heating. A solid earth contact protects the welder electronics against faults caused by a sudden loss of circuit continuity, which at such high currents could break down the power modules. This is a professional solution that raises working standards and the reliability of the whole welding system, aimed at engineers who value weld quality ready for radiographic testing.

In manual metal arc welding over long distances, the symmetry of the electrical circuit has a decisive effect on arc stability and on the quality of fusion. With the PRO 120 mm2 earth cable you get an ideal base for a Mirror-Balance layout together with an electrode lead of the same cross section. Such a configuration reduces arc blow, a common problem when welding with high direct current over long transmission lines. The total voltage drop Delta U in the complete MMA circuit is only 1.82V, which lets the Hot Start and Arc Force functions work precisely under typical workshop conditions. This is a SpawLab engineering solution that allows laboratory grade weld quality in the hardest field and assembly conditions. Mirror-Balance also means less load on the control circuits of the welder, which no longer have to compensate for an asymmetric secondary circuit, and that clearly extends their trouble free life.