(1) A general term for cables, steel ropes, electric wires, etc. (2) Insulated electric wires. A collection of electric wires covered with electrical insulation, which are then coated with various sheaths to electrically and chemically insulate them from the outside world. They are broadly divided into power cables and communication cables. The former are underground power transmission cables for power transmission, and include belt cables, H cables, SL cables, and low gas pressure cables for operating voltages of 10 to 30 kV, as well as oil-filled OF cables for special high voltage (about 7 kV) and extra high voltage (100 to 500 kV). Recently, butyl rubber insulated cables have also been used. The latter are used for telecommunications within and between stations, and include overhead, underground, and undersea cables. Types include balanced cables (for intra-station, city, and inter-city use) and coaxial cables (for long distances and undersea cables), as well as optical fiber cables for optical communications, which have recently been developed and used. cable |
(1) 大綱,鋼索,電線などの総称。 (2) 被覆電線。電気絶縁物でおおった電線を集めて,その上に種々の外装を施し,電気的にも化学的にも外界から遮断したもので,電力用ケーブルと通信用ケーブルに大別される。前者は電力輸送用の地中送電ケーブルで,ベルトケーブル,使用電圧 10~30kV用のHケーブル,SLケーブル,低ガス圧ケーブルと,特別高圧 (約 7kV) ,超高圧 (100~500kV) 用の油入り OFケーブルなどがある。最近はブチルゴム絶縁ケーブルなども利用されている。後者は電気通信用として局内および局間に使用されるもので,架空,地下,海底用ケーブルがあり,種類としては,平衡型ケーブル (局内用,市内,市外用) と同軸ケーブル (長距離用,海底ケーブル用) のほか,最近は光通信用の光ファイバケーブルが開発使用されている。
ケーブル
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