VARIABLE VOLTAGE LOAD TAP CHANGING TRANSFORMER

A method for forming a longitudinal subsurface heater includes longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal. The longitudinal strip is formed into a tubular around the insulated conductor heater with the insu...

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Bibliographische Detailangaben
Hauptverfasser:	BURNS, DAVID BOOTH, CARDINAL, PAUL GREGORY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROLLING PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A method for forming a longitudinal subsurface heater includes longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal. The longitudinal strip is formed into a tubular around the insulated conductor heater with the insulated conductor heater welded along the inside surface of the tubular.