| 摘要 |
PURPOSE:To attain power feeding between two normal remaining branches even when a fault takes place on any branch in a submarine branching device where three terminal stations are connected in a star form. CONSTITUTION:In an optical communication system where a submarine branching point, 1st land station 11-3rd land station 13 on land are connected in a star form via a submarine cable including a feeder and an optical fiber, branches of the 1st station 11 and the 2nd station 12 have a relay point and the branch of the 3rd station 13 has no relay point, the submarine branching device 40 is provided with a relay contact section 42 provided in the branch of the 2nd station 12 and connecting selectively the 2nd station 12 to a branching point 41 or one of a submarine earth electrode 38 and with a driving section 43 provided in the branch of the 3rd station 13 and driving the contact section 42 so as to connect the 2nd station 12 to the submarine earth electrode 38 when a current flows between the 1st station 11 and the 3rd station 13 and connect in other cases the 2nd station 12 to the branching point 41. |
