ARC FURNACE ELECTRODE CONTROL

System for controlling the positions of each of the three electrodes of a three phase electric furnace to maintain optimum real power delivered to the furnace in the event of electrode short circuiting or arc extinction due to scrap movement in the furnace. The system includes means for determining...

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Bibliographische Detailangaben
1. Verfasser:	BOWMAN, BEN BRIAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CHEMISTRY CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL GENERATION HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS SYSTEMS FOR STORING ELECTRIC ENERGY TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	System for controlling the positions of each of the three electrodes of a three phase electric furnace to maintain optimum real power delivered to the furnace in the event of electrode short circuiting or arc extinction due to scrap movement in the furnace. The system includes means for determining the magnitude of arc voltage and arc current and means to change the position of selected electrodes when either arc voltage or arc current is determined to be zero.