| 摘要 |
<p>A gas-filled cable having low heat emission and low power loss and being used for the transmission of high-voltage electric current. The cable includes one or more conductors (14) which are axially spaced in position relative to each other in the cable by means of supporting insulators (16) inside an enclosing conduit (10, 12 or 12") which is filled with a insulating gaseous medium. In such a cable the conduit comprises on one hand a cylindrical metal sheath (10) of plain or low-alloy merchant steel having a carbon content of less than 0.6% and on the other hand a metal shield (12; 12") of non-magnetic material fixed inside the sheath and having a low specific electrical resistivity. Said metal shield (12") may be spaced from the metal sheath (10) along part of the inside of said sheath. Then said shield is perforated (at 22) by holes, slots or the like leading to the space forming a so-called particle trap (20). </p> |
