Title:
三相電力系統用漏電遮断器システム
Document Type and Number:
Japanese Patent JP5230432
Kind Code:
B2
Abstract:
A ground-fault circuit-interrupter method and system for three-phase electrical power systems including a plurality of GFCI units and a processor forming a ground-fault circuit interrupting system for use in a three-phase power distribution network including a three-phase source of electrical power, a three- or four-wire main circuit, and a plurality of three- or four-wire feeder circuits connected across the main circuit. A GFCI unit is provided in the main circuit and in each of the feeder circuits. The processor is programmed to continuously monitor the main GFCI unit and each feeder GFCI unit to determine when and where a fault has occurred and, in response thereto, to interrupt the faulted circuit and to inhibit tripping of the non-faulted circuits. The novel GFCI system is applicable for solidly-grounded, resistance-grounded, or ungrounded as well as other three-phase systems.
Inventors:
Hummer, Paul, S.
Application Number:
JP2008535581A
Publication Date:
July 10, 2013
Filing Date:
October 03, 2006
Export Citation:
Assignee:
Chevron U.S.A. Inc.
International Classes:
H02H7/26; H01H83/02; H02H3/347
Domestic Patent References:
| JP2097223A |
Attorney, Agent or Firm:
Asamura patent office