| 摘要 |
The present invention refers to a contrivance (1) at the main cables for screening the cables from electric alternating fields. Between fields (3, 4) of insulation, which are arranged so as to surround an earth conductor (5), which is interiorly received in an along the cable running cable screen, a connection conductor (8, 9) is received which is arranged so as to connect the earth conductor with said cable screen for electric contact.
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