G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 31/02 (2006.01) G01R 31/327 (2006.01) G01R 31/333 (2006.01) H01H 11/00 (2006.01) H01H 1/00 (2006.01) G01R 31/32 (1990.01)
Patent
CA 2113193
2113193 9323760 PCTABS00028 A system which automatically monitors critical circuit breaker (C) operating parameters during each operation of the circuit breaker. Monitored parameters include the currents being interrupted, trip coil voltage and current, position of the contacts, initiation of closing, over travel of the contact mechanism on closing, contact opening and closing point and pressure in SF6 circuit breakers. These parameters are sampled and stored in memory (M) in the circuit breaker. The sample memory is connected to a local microcomputer (M) which is in communication with a host computer (H). Upon receipt of a command from the host computer (H) a local microcomputer in the circuit breaker (C) transmits the sample data to the host computer (H) for storage and analysis. The host computer (H) compares the stored data for each operation with acceptable operation curves. If the data indicates operation outside of various acceptable ranges, the maintenance department is automatically notified of the potential problem, to allow preventative maintenance and further testing, if desired.
Fetherstonhaugh & Co.
Square D. Company
LandOfFree
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