| 发明名称 |
Voltage protective apparatus for variable-frequency power system. |
| 摘要 |
<p>An apparatus for detecting a voltage in a variable-frequency power system equipped with a variable-frequency power unit in a path extending from an AC power supply line to a load, wherein the threshold value of a protective relay functioning upon occurrence of an abnormal voltage in the power system is determined in accordance with a physical quantity proportional to the system frequency.</p> |
| 申请公布号 |
EP0264971(A2) |
申请公布日期 |
1988.04.27 |
| 申请号 |
EP19870117882 |
申请日期 |
1984.06.27 |
| 申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TAKATA, NOBUHARU C/O MITSUBISHI DENKI K. K.;HINO, SAKIO C/O MITSUBISHI DENKI K. K.;ITO, MAKOTO C/O MITSUBISHI DENKI K. K.;KANEKO,SEIJI C/O MITSUBISHI DENKI K.K. |
| 分类号 |
H02H7/09;(IPC1-7):H02H7/09 |
主分类号 |
H02H7/09 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
