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Company blog about Raychem Launches Advanced HVBT Busbar Insulation for Electrical Safety

Raychem Launches Advanced HVBT Busbar Insulation for Electrical Safety

2026-10-15

Electrical engineers frequently face the challenge of preventing flashovers in busbar compartments where limited space compromises insulation integrity. In power systems, insulation failures often originate from insufficient creepage distances that may appear negligible at first glance.

A specialized solution has emerged through Raychem HVBT high-voltage busbar insulation tape from TE Connectivity. This innovative product combines heat-shrink technology with hot-melt adhesive to create a robust protective barrier for electrical equipment.

The HVBT insulation tape distinguishes itself through exceptional heat-shrink properties and a high-adhesion inner layer. While the installation process remains straightforward, precision execution determines its effectiveness. Proper preparation begins with thorough cleaning of the busbar surface to eliminate any oil or contaminants that might compromise the seal.

Application requires careful attention to technique: installers must follow the half-lap winding method to ensure complete layer-to-layer contact without air gaps. The final step involves uniform heating with a hot air gun until the tape fully conforms to the busbar contour, with adhesive visibly extruding at the edges to confirm complete encapsulation.

This insulation solution provides multiple safety benefits, including improved dielectric performance and reduced short-circuit risks from environmental factors like condensation or accidental contact by small animals. Mastering its proper application represents a critical skill for electrical maintenance professionals, serving as a proactive measure to prevent equipment failures before they occur.