water-cooled cables for induction furnaces

water-cooled cables for induction furnaces

Water-cooled cables deliver the power from the source to the furnace coil. The power flows through the cable and the caused heat by the high current in mitigated by the water flowing through the canal. Considering the high number of the induction furnace producers, there are various designs for water-cooled cables for induction furnaces. Below picture depicts various parts of the water-cooled cable for induction furnaces.


There are two types of terminals for water-cooled cables of induction furnaces: bus type and threaded type.

In the bus type, the terminal is a plate contact connected to the other contact by bolts and nuts. This type is manufactured by machining solid copper pieces. But sometimes to coordinate with the previously provided cables, different parts of the terminal are welded together to make a terminal. This procedure is not suggested by Araz Trans and the integrated approach is considered the main solution.

It should be noted that the copper used here is of ETP grade under ASTM_C11000 standard.


Generally to prevent deformation by tension and oxidation, it is suggested that the terminals be tin-plated. Aside from the benefits mentioned above, tinning terminals will fill the pores on the contacts preventing partial electric discharges and rotting.

The other type of the applied terminals of the induction furnace’s water-cooled cable is fixed by threaded nuts and union.

These fittings are composed by smaller machined copper and brass parts pressed together where the threaded surface which carries electric current is preferably made of brass to prevent rapid erosion.

Electric tough pitch copper:

To reach thorough info on this, please refer to the twisted copper cables section.

Water canal:

Canals are applied to avoid water flow congestion by the tied conductors. Canals of the cables for induction furnaces are mainly stainless-steel springs of 304 or 316 grade (in the case of high erosion possibility by water quality) or occasionally copper along the cable.


To reach thorough info on hoses of water-cooled cables, please refer to the free crane hoses section.

Protecting hose against burning

To protect the hose and reliability margin, aside from outer protector layer it is possible to cover the hose by wide fiberglass tapes. Of course this is suggested when the cable is under hazardous condition. In normal conditions, this approach is not much of interest and hence, the second protective layer is not wrapped around the hose in the production process.