Raychem’s BBIT/BPTM and HVBT heat shrinkable bus bar insulation tubings and tapes provide insulation enhancement and flashover protection. These products can be used on aluminium and copper bus bars of circular and rectangular cross-section. Wall thickness is controlled by heat shrink process. BPTM provides flashover protection up to 25kV, whilst the thicker walled BBIT will protect up to 36kV. High voltage tests on bus bars insulated with BBIT/BPTM tubing demonstrate significant reduction in clearances over conventional air insulated systems. Raychem Heat Shrinkable Tubings and Tapes used for providing insulation where the clearances are inadequate.