Industrial electric heating furnaces – Arc furnace device – Power supply system
Reexamination Certificate
2011-08-02
2011-08-02
Van, Quang T (Department: 3742)
Industrial electric heating furnaces
Arc furnace device
Power supply system
C373S104000, C373S060000
Reexamination Certificate
active
07991039
ABSTRACT:
A system and method for monitoring the operating parameters of an electric arc furnace having a primary electrical circuit comprising a primary current transformer. The method includes monitoring the furnace's primary current transformer; collecting data therefrom; transmitting the collected data to a server having an operatively connected monitor; and displaying the collected data on the monitor in substantially real-time. The server also collects information about the performance of the furnace from a programmable logic computer and information entered manually by an operator at a furnace monitoring viewer system, which may also be displayed in substantially real-time on the monitor.
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patent: 4283678 (1981-08-01), Halter
patent: 5099438 (1992-03-01), Gulden, Jr. et al.
patent: 5539768 (1996-07-01), Kracich
patent: 6552525 (2003-04-01), Bessler
patent: 2005/0154611 (2005-07-01), Beeler et al.
Garcia Fernando Martinez
Gerhan Ronald E.
Lehr Dave A.
Lugo Nicolas
Cartiglia James R.
GrafTech International Holdings Inc.
Van Quang T
Waddey & Patterson , P.C.
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