To these insulators the wire is attached in the ordinary manner. B is, in Fig. 1, the peg or standard supporting the insulator proper. A, and in Fig. 2, the shank of the hook screwed into the ...

Topological insulators are materials that are insulating in their interior but can support the flow of electrons on their surface. The underlying cause is time-reversal symmetry: their physics is ...

HVIB insulators are designed to support pantographs, busbars and other high-voltage electric equipment on locomotives, electric multiple units and high-speed trains. Metal end fittings are selected ...