METHOD AND STRUCTURE FOR FASTENING AND ELECTRICALLY ISOLATING BUSBARS INSULATED WITH HEAT-SHRINK MATERIAL

摘要

Isolation structure is provided for electrically isolating a busbar mounted to a post insulator by a fastener via a busbar mounting hole. The busbar has insulating material covering the busbar except for surfaces defining the mounting hole. The isolation structure includes an electrically insulating sleeve constructed and arranged to be disposed around a portion of a periphery of the fastener and to be received in the busbar mounting hole. At least first and second electrically insulating washers each have a bore that receives the insulating sleeve. The insulating washers are constructed and arranged to engage with the surfaces defining the mounting hole on opposing sides of the busbar so as to sandwich the busbar between the first and second insulating washers.