发明名称 |
Underwater Optical Communication System |
摘要 |
<p>A branching unit for an underwater communications system is arranged so as to provide remote hot switching for electrical power. The unit has three terminations (1, 2, 3) each for a different one of three line cables and one or more power demand circuits (20) requiring an electrical power feed from the line cables. A first switch is actuable to complete a current path between an appropriate pair of the three terminations via one or more of the power demand circuits depending upon relative line voltage. A second switch is actuable after actuation of the first switch depending upon current supplied to the power demand circuit(s) rising above that which occurs upon action of the first switch. The second switch completes a circuit between the non-paired termination and a fourth termination for a sea-earth.</p> |
申请公布号 |
GB2287625(B) |
申请公布日期 |
1999.05.12 |
申请号 |
GB19950004334 |
申请日期 |
1995.03.03 |
申请人 |
* STC SUBMARINE SYSTEMS LIMITED |
发明人 |
STEPHEN MICHAEL * WEBB |
分类号 |
H02G15/14;H03K17/00;H04B3/44;H04B10/00;(IPC1-7):H04B3/44 |
主分类号 |
H02G15/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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