Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1987-11-09
1988-11-29
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
361 97, 361 87, 324423, 324130, H02H 3093
Patent
active
047886200
ABSTRACT:
Electronic trip units employed within static trip circuit breakers are individually calibrated and automatically adjusted to ensure that the trip transfer characteristics are within specification requirements. A trimming network within the trip unit circuit contains a plurality of parallel resistors each separately connected within the circuit by means of a fusible link. Test input and output values are compard to idealized values that are binary-weighted within a look-up table in the test equipment computer. The percent correction required is determined and the appropriate links are interrupted to provide ideal trip response.
REFERENCES:
patent: 4016483 (1977-04-01), Rudin
patent: 4345288 (1982-08-01), Kompf et al.
patent: 4494212 (1985-01-01), Muellner
patent: 4550360 (1985-10-01), Dougherty
patent: 4589052 (1986-05-01), Dougherty
patent: 4649455 (1987-03-01), Scott
patent: 4710844 (1987-12-01), Scott
Ser. No. 760,224 entitled "Electronic Circuit Breaker Trip Function Adjusting Circuit", Graham Scott et al., filed 7/29/85, now abandoned.
Bernkopf Walter C.
General Electric Company
Jacob Fred
Menelly Richard A.
Pellinen A. D.
LandOfFree
Static trip circuit breaker with automatic circuit trimming does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Static trip circuit breaker with automatic circuit trimming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Static trip circuit breaker with automatic circuit trimming will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-367208