An inductive wireless power transfer device comprising: a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance (h1); a first magnetic core cap on the primary winding assembly and a second magnetic core cap on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly ; and a multi-section high voltage isolator interposed between the primary winding assembly and the secondary winding assembly , the multi-section high voltage isolator including at least one individual insulator section comprising a dielectric material, and wherein the multi-section high voltage isolator including at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly , wherein the at least one individual insulator section of the multi-section high voltage isolator includes a core isolator portion extending along a first axis (Z), between a first core isolator portion and an opposing second core isolator portion to define a core isolator height (h2), and an outer isolator surface extending along a second axis (X), perpendicular to the first axis (Z), to define a multi-section high voltage isolator width, wherein the at least one intermediate magnetic core includes a middle non-sectioned ferrite core embedded in the core isolator portion , wherein the middle non-sectioned ferrite core extends along the first axis (Z), to define a ferrite core height, and extends along the second axis (X), to define a ferrite core width that is less than the ferrite core height. a primary winding assembly and a secondary winding assembly separated from the primary winding assembly by a distance (h1); a first magnetic core cap on the primary winding assembly and a second magnetic core cap on the secondary winding assembly so as to magnetically couple together the primary winding assembly and the secondary winding assembly ; and a multi-section high voltage isolator interposed between the primary winding assembly and the secondary winding assembly , the multi-section high voltage isolator including at least one individual insulator section comprising a dielectric material, and wherein the multi-section high voltage isolator including at least one intermediate magnetic core comprising a ferrite material interposed between the primary winding assembly and the secondary winding assembly , wherein the at least one individual insulator section of the multi-section high voltage isolator includes a core isolator portion extending along a first axis (Z), between a first core isolator portion and an opposing second core isolator portion to define a core isolator height (h2), and an outer isolator surface extending along a second axis (X), perpendicular to the first axis (Z), to define a multi-section high voltage isolator width, wherein the at least one intermediate magnetic core includes a middle non-sectioned ferrite core embedded in the core isolator portion , wherein the middle non-sectioned ferrite core extends along the first axis (Z), to define a ferrite core height, and extends along the second axis (X), to define a ferrite core width that is less than the ferrite core height. <EOS>