Abstract: Disclosed herein is a method for fabricating a stator unit for a super-high heat-resistant motor pump, comprising: coating a bare copper wire with a first heat-resistant resin layer; applying a woven fiber cladding to an outer surface of the first heat-resistant resin layer; coating an outer surface of the woven fiber cladding with a second heat-resistant resin layer; winding the coated wire by the second heat-resistant resin layer around an iron core for the stator unit; and applying an inorganic sheath to an outer surface of the second heat-resistant resin layer.

Abstract: A rupture disk for a gas insulated switchgear which includes a thin dome plate that includes a first flange portion and a first dome-shaped portion formed in a dome shape, at the center of the first flange portion; and a rupture guide plate which includes a second flange portion, laminated on the first flange portion, and a second dome-shaped portion has a plurality of slots formed therein to define a rupture shape so that a part of the first dome-shaped portion is ruptured, in a predetermined shape, when an internal pressure increases. End portions of slots, disposed at both edges among the plurality of slots, are provided with rupture restriction openings, respectively, to configure a hinge portion of the second dome-shaped portion.

Abstract: Disclosed herein is a heat exchange type cooling apparatus for a transformer, including: an insulating oil circulation pipe configured in a closed circuit form so that an insulating oil filled in the transformer is discharged to the outside and then returns again to the transformer; an insulating oil pump configured to transfer the insulating oil; and an insulating oil cooling system configured to cool the insulating oil, wherein the insulating oil cooling system includes: a liquid refrigerant maintained in a liquid state during the entire circulation cycle; a refrigerant circulation pipe configured to circulate the liquid refrigerant; a refrigerant pump configured to transfer the liquid refrigerant; and a heat exchanging part configured to heat-exchange the liquid refrigerant and the insulating oil with each other to cool the insulating oil.

Abstract: Disclosed herein is a heat exchange type cooling apparatus for a transformer, including: an insulating oil circulation pipe configured in a closed circuit form so that an insulating oil filled in the transformer is discharged to the outside and then returns again to the transformer; an insulating oil pump configured to transfer the insulating oil; and an insulating oil cooling system configured to cool the insulating oil, wherein the insulating oil cooling system includes: a liquid refrigerant maintained in a liquid state during the entire circulation cycle; a refrigerant circulation pipe configured to circulate the liquid refrigerant; a refrigerant pump configured to transfer the liquid refrigerant; and a heat exchanging part configured to heat-exchange the liquid refrigerant and the insulating oil with each other to cool the insulating oil.

Abstract: Disclosed herein is a method for fabricating an electric wire for a winding of a super-high heat-resistant motor pump, including: coating a bare copper wire with a first heat-resistant resin layer; applying a woven fiber cladding to an outer surface of the first heat-resistant resin layer; coating an outer surface of the woven fiber cladding with a second heat-resistant resin layer; and applying an inorganic sheath to an outer surface of the second heat-resistant resin layer.

Abstract: A rupture disk for a gas insulated switchgear which includes a thin dome plate that includes a first flange portion and a first dome-shaped portion formed in a dome shape, at the center of the first flange portion; and a rupture guide plate which includes a second flange portion, laminated on the first flange portion, and a second dome-shaped portion has a plurality of slots formed therein to define a rupture shape so that a part of the first dome-shaped portion is ruptured, in a predetermined shape, when an internal pressure increases. End portions of slots, disposed at both edges among the plurality of slots, are provided with rupture restriction openings, respectively, to configure a hinge portion of the second dome-shaped portion.