Document Type and Number:
Japanese Patent JPS5237579
Kind Code:
B1
Abstract:
An apparatus for providing power for transmitting relaying signals from an extra high voltage transmission line to ground potential which avoids the use of a high cost current transformer and which is immediately effective to provide such signals when the transmission line is initially energized to protect such line if it is energized when a fault is present. The apparatus supplies the power from ground potential to line potential by means of sonic quantity transmitted from a first transducer to a second transducer through an elongated rod-like insulating member which preferably is caused to vibrate at its resonant frequency.
More Like This:
| JP3124546 | Hanger device for drying shoes etc. |
| JP3622924 | Folding hanger |
| WO/2019/202863 | HANGER |
Application Number:
JP2668072A
Publication Date:
September 22, 1977
Filing Date:
March 17, 1972
Export Citation:
International Classes:
A47G25/40; G01R15/14; G02B6/44; H01H33/42; H02H1/00; (IPC1-7): H02H1/00; H01F40/06