发明名称 |
Transformer protective relay. |
摘要 |
<p>A transformer protective relay issues a relay tripping command when the differential current that is the difference between currents in the primary and secondary windings of the transformer has a magnitude larger than the specified value and, at the same time, when the differential current includes the fifth harmonic component less than the specified value. Another cause of tripping signal generation is the differential current value processed to have a certain timer characteristics. </p> |
申请公布号 |
EP0169313(A1) |
申请公布日期 |
1986.01.29 |
申请号 |
EP19850104698 |
申请日期 |
1985.04.18 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
USUI, MASAJI MITSUBISHI DENKI K.K. POWER AND |
分类号 |
H02H7/045;(IPC1-7):H02H7/045;H02H3/38 |
主分类号 |
H02H7/045 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|