Title:
METHOD AND EQUIPMENT FOR DETECTING ABNORMALITIES IN POWER LINE
Document Type and Number:
Japanese Patent JPH11332086
Kind Code:
A
Abstract:
To detect abnormalities in a power with high reliability by an existing equipment, without using equipment for special use for detecting the abnormalities.
Between power distribution equipment 20 and 40 for distributing the power, a multiple signal line 31 and a power line 32 are run side by side, being twisted (overlaid). When communication errors are detected by an error detecting section 25 by the specified number of times within a specified period of time for multiplex communication in multiplex communication circuits 24, 49, a controlling section 21 determines that there is an abnormality in the power line and then cuts off the supply of power using a switching circuit 22 which is insutalled at the upstream side of the power line.
Inventors:
MATSUDA YUTAKA
Application Number:
JP12744998A
Publication Date:
November 30, 1999
Filing Date:
May 11, 1998
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD
International Classes:
G01R31/02; H02H5/10; H04B3/44; H04B3/46; (IPC1-7): H02H5/10; G01R31/02; H04B3/46
Attorney, Agent or Firm:
Koichi Miyagawa