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Title:
DIFFERENCE CURRENT PROTECTIVE RELAY SYSTEM
Document Type and Number:
Japanese Patent JPS53139152
Kind Code:
A
Abstract:

PURPOSE: To reduce input circuit hardware without deteriorating the performance by collectively sampling the data after the propagation time of progressive waves.


Inventors:
MAKINO JIYUNICHI
MIKI YOSHITERU
MADORI IWAO
Application Number:
JP5310877A
Publication Date:
December 05, 1978
Filing Date:
May 11, 1977
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H02H3/28; (IPC1-7): H02H3/28



 
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