Abstract: A method of securing a flexible temperature sensing element to a duct spacer element of the type which is commonly used in an electrical transformer includes steps of forming a groove in a surface of duct spacer element; and securing a flexible temperature sensing element within the groove so that the flexible temperature sensing element does not protrude from the groove beyond the surface in which the groove is formed. In this way, the duct spacer element and sensing element may be assembled into an electrical apparatus such as a transformer without imparting destructive mechanical forces to the sensing element.

Abstract: A method of securing a flexible temperature sensing element to a duct spacer element of the type which is commonly used in an electrical transformer includes steps of forming a groove in a surface of duct spacer element; and securing a flexible temperature sensing element within the groove so that the flexible temperature sensing element does not protrude from the groove beyond the surface in which the groove is formed. In this way, the duct spacer element and sensing element may be assembled into an electrical apparatus such as a transformer without imparting destructive mechanical forces to the sensing element. The disclosure also embraces an integrated temperature sensing duct spacer unit.

Abstract: Insulation structures for use in the insulation space and with the phase barrier insulation of an electrical inductive apparatus. The insulation structures include at least one layer of spaced, vertically-extending spacer members which is surrounded on both sides by layers of electrical insulating sheet material. The insulation structures are disposed in movable relation with the adjacent windings and phase barrier insulation, thereby allowing relative movement between the windings and the insulation structures during a short circuit.

Abstract: Electrical inductive apparatus having improved support structure for a magnetic core and winding assembly. The support structure includes end plate assemblies, each having a substantially tubular cross-sectional configuration, which are disposed in abutting relation with the outermost turns of the winding assembly and joined to top and bottom end frames disposed adjacent to the top and bottom yokes of the magnetic core. In another embodiment, upper core braces are situated above the winding and are adjustably disposed between the outermost legs of the magnetic core and the end plate assemblies. Lower core braces are disposed below the winding and include members which are disposed in abutting relation with the core legs and joined to bottom end frame.