| 发明名称 |
PROTECTIVE RELAYING SYSTEM |
| 摘要 |
PURPOSE:A pilot relaying system which prevents misbreak in the normal operation section as much as possible even when an outside-section trouble and noise in a transmission line might occur simultaneously. |
| 申请公布号 |
JPS5214844(A) |
申请公布日期 |
1977.02.04 |
| 申请号 |
JP19750091144 |
申请日期 |
1975.07.28 |
| 申请人 |
HITACHI LTD |
发明人 |
SEO KAZUO |
| 分类号 |
H02H3/26;H02H3/28;H02H3/38 |
主分类号 |
H02H3/26 |
| 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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