Technical knowledge of high-current water-cooled cables

Water-cooled cable (English name: Water Cooled Cable, commonly known as water cable) is a special cable with water in the middle and used for high-current heating equipment. It usually consists of three parts: electrode (cable head), wire, and outer sheath.

The structure of the water-cooled cable:

The large cross-section water-cooled cable crimps a copper stranded cable of 300~500mm2 per share into one. Generally, the cross-sectional area of ​​each cable is between 1200-6000mm2, and each phase has 2~4 cables, which greatly simplifies the layout and structure of the short network. , Because the copper strands in each cable undergo geometric transposition, the current of the copper strands is uniform; the insulation between the copper strands is separated, the mutual position is fixed, and the position between the entire cable is pulled apart and subjected to gravity The copper stranded wire and the copper joint are crimped into one body, and the copper joint has a large area and a processing surface, so the contact surface performance is good; the cable and the joint are cooled by water, and the cooling effect is good. Therefore, the large cross-section water-cooled cable greatly improves the reliability of operation; in addition, the position between the cable bundles is fixed, so that the reactance value changes little, and it also plays a role in stabilizing the arc. Because of its outstanding advantages, it is currently widely used at home and abroad.