Patent ID: 7535126

Claim:
A dry-type high-voltage load system apparatus having a high-voltage load system circuit comprising: a low-voltage bank comprised of a plurality of lower-capacity configuration banks for low-voltage resistor circuits each comprised of a plurality of low-voltage three-phase resistor circuits connected to each of a plurality of switches connected in parallel to an output terminal of a transformer input terminal of which is connected to a central breaker; and a high-voltage bank comprised of a plurality of lower-capacity configuration banks for high-voltage resistor circuits each comprised of a plurality of high-voltage three-phase resistor circuits connected to each of a plurality of switches, said low-voltage bank and said high-voltage bank being connected in parallel to a high-voltage power generator through said central breaker, said low-voltage three-phase resistor circuit and said high-voltage three-phase resistor circuit each being comprised of resistor arrays in three phases, each of said resistor arrays being comprised of resistor elements connected in series, in a form of a Y-connection in which three resistor arrays are concentrated for reconciliation of their phases so that an isolated and independent neutral point unconnected to those of the other three-phase resistor circuits is formed, or in a form of a Δ-connection in which each terminal of said resistor arrays in three phases is connected to each of in-phase branch distribution lines of a power cable, each of said resistor elements comprising: a cylindrical outer tube made of metal and having an outer peripheral surface that is without any spiral fin; electrode rods inserted respectively from both ends of said outer tube; a resistive heat-generating wire wound spirally and extending between inner ends of said electrode rods; a solidified insulating material filling a space within an internal surface of said outer tube so as to encase said resistive heat-generating wire and said electrode rods; with cylindrical high-voltage proof insulating sleeves without any fins; said high-voltage proof insulating sleeves extractably encasing and being anchored at respective portions of the outer peripheral surface of said cylindrical outer tube, said respective portions being adjacent to both ends of the outer peripheral surface of said outer tube; and said insulating sleeves being positioned between said outer tube and one or more supports so that said outer said resistor element is supported by the one or more supports.