Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Patent
1995-06-12
1999-10-19
Sherry, Michael J.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
361 65, 361 66, 361 44, 361 45, H02H 318
Patent
active
059699256
ABSTRACT:
An arrangement for transmitting electric power from a source point to a load point comprises (i) a first sensor to monitor the amount of power being supplied from the source point, (ii) a second sensor to monitor the amount of power being received by the load point, and (iii) communication circuit for communicating to a control circuit information in respect to the amount of power supplied from the source point as well as that received by the load point. The control circuit then compares the amount of power supplied versus that received, and provides a warning and/or halts the supply of power in case a substantive discrepancy were to occur between power supplied versus power received. Thus, in case an improper loading were to occur between the source point and the load point, it would be detected by the control circuit, which would then instigate protective action.
REFERENCES:
patent: 3764993 (1973-10-01), Staad et al.
patent: 4159466 (1979-06-01), Bereskin
Mason, Protective Relaying, John Wiley & Sons Inc., 1956, pp. 63-69, 287-288.
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