This article is for manufacturing, testing of non-segregated Bus Bars and Bus Ducts rated 600 V to 35 kV as per international standard ANSI C37. The purpose of this document is to detail the requirements of Northern Powergrid in relation to the tubular busbar systems and associated fittings detailed within this document. This document supersedes the following documents, all copies of which should be destroyed. 23, Bus Bars and Bus Ducts Ratings, Bus Bar Supports, Bus Bars. Our Raychem Busbar Insulation Tubing is a thick-wall heat-shrinkable tubing for copper and aluminum busbars, providing insulation enhancement and protection against flashover and accidentally induced discharge up to 72 kV. Our TE Raychem Busbar Insulation Tubing provides flashover protection up to. 3MTM Heat Shrinkable Tubing for Bus Bar BBI–A Series is designed for insulating rectangular, square and round bus bar rated from 5 kV through 35 kV. The. Aluminium tubular busbar is a conductor used in power systems for transmitting large currents, made of high-purity aluminium or aluminium alloys, typically in a round hollow tube structure. Their tubular. PMAX H is a patented range of busbar trunking that is utilised within building and industrial applications to deliver power to electrical loads.