Electrical heating device used at very low voltage in e.g. heating floors, has transformer having secondary winding delivering voltage ranging from a few volts to fifty volts to heating unit having core wire made from aluminum alloy

摘要

Device has a transformer (101) having a secondary winding (102) delivering a voltage ranging from a few volts to 50 volts to a heating unit (103) through connectors (105). Heating unit consists of a core wire made from an aluminum alloy covered with nickel or tin and surrounded by an insulator. Heating unit is inserted in a screed (106) of a heating floor, situated above an insulator (107) and a slab (108).