| 摘要 |
An electrical three-phase heating cable and system that produces a reduced magnetic field and which uses a cable containing three insulated copper wires, or equivalents, as heating elements. The wires are equidistantly spaced from each other, in triangular configuration, the geometric center of the triangle coinciding with the longitudinal axis of the cable. The wires are twisted in a uniform fashion along the longitudinal axis of the cable. Its low operating temperature, robustness and safety enable the system to be installed, for example, in floors and walls for the general heating of buildings, and in outdoor pavements, for snow-melting purposes, etc. The feeder conductors are also twisted to reduce the magnetic field around the feeder.
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