摘要 |
<p>The cable has protective sheath (4) surrounding its core, which comprises a central resistance conductor (1) surrounded by an insulation sheath (2). A return conductor (5) is connected to the resistance conductor at one end of the cable. The return conductor comprises separate conductors (5a,5b,5c) distributed in the core. They are imbedded in a common insulation sheath (3) over the resistance conductor sheath (2).</p> |