Title:
CIRCUIT BREAKER REMOVING APPARATUS
Document Type and Number:
Japanese Patent JP3890150
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable quick power-up initial setting of a microprocessor of removing apparatus, by promoting initiation of sampling process and application of protection algorithm through application of auxiliary initial setting algorithm to the microprocessor.
SOLUTION: An external non-volatile memory(NVM) 33 is connected to a micro-controller via a conductor 34. Here, NVH 33 includes a removing apparatus together with the calibration coefficient used for current sampling algorithm. A current signal from a current transformer(CT) is inputted to an analog/ digital converter 49 and then enters CPU 35 via a data bus 51 for conducting necessary protecting function via an output conductor. As a result, on the occasion of transferring a large amount of data a RAM 36 from NVM 33, a certain delay occurs until the micro-controller becomes ready for conducting arithmetic operation from the timing when the contact of the related circuit breaker is closed first, thereby becoming the initial setting possible.
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Inventors:
Mark Jay Overmeier
Paul Hamilton Singer
Alan Joseph Mesari
Paul Hamilton Singer
Alan Joseph Mesari
Application Number:
JP25587398A
Publication Date:
March 07, 2007
Filing Date:
September 10, 1998
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
H02H3/02; G06F15/177; H02H3/10; H01H83/02; H02H3/00; (IPC1-7): H02H3/02; H01H83/02; H02H3/10
Domestic Patent References:
| JP62173922A | ||||
| JP62160029A |
Attorney, Agent or Firm:
Kenichi Matsumoto
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