is a relatively small crucible furnace, which has a flange above the upper concrete ring for attachment to the actual furnace. When used as holding equipment, these crucible inductors have a crucible diameter of approx. 500 mm and a crucible height of approx. 750 mm. The capacity is thus approx. 1,000 kg with an output of 300 to 500 kW. The largest crucible inductor furnace constructed has a total capacity of approx. 100 tonnes including the crucible inductor with 6.6 tonnes for grey cast iron, and approx. 38 tonnes of aluminium in total. The diameter of the crucible is 950 mm and the height 1,400 mm. The installed output is 2,300 kW.