Microprocessor detection of transient voltage and abnormal...

Details Microprocessor detection of transient voltage and abnormal... Microprocessor detection of transient voltage and abnormal...

H - Electricity

02

H

H02H 3/20 (2006.01) H02H 7/20 (2006.01) H02H 9/04 (2006.01)

Patent

CA 2303025

A method for determining the extent of a transient's ability to cause MOV over heating and subsequent explosion by microprocessor analysis of an AC voltage input waveform with respect to a stored perfect sine wave. The microprocessor also calculates the RMS value of the applied voltage waveform and compares it to stored limits to determine if it could cause over heating of the MOV. In either case, the microprocessor will generate an out-of range signal to a disconnect device to take the MOV, and also the load, if desired, off line until normal line voltage is restored.

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