| 摘要 |
PURPOSE:To easily confirm whether or not a newly laid and branch-connected cable is normally laid to restore a communication among the residual cables even when a fault occurs on any cable connected with a underwater diverging device, and to constitute a feeding path without any problem even when the plural diverging devices are used, in an optical underwater communication system equipped with the underwater diverging device. CONSTITUTION:A relay 1 RL1 which is operated by fed currents is provided between a cable 11 at a terminal station A side, and a cable 12 at a terminal station B side of an underwater diverging device 10, and a relay contact r11 of the relay 1 is provided between a cable 13 at a terminal station C side and a submarine ground so that the contact is closed when a feed is operated from the terminal station A to the terminal station B, and when the feed is interrupted, and so that the contact is opened when the feed is operated from the terminal station B to the terminal station A. |
