The expansion clamp is a connector designed for current transmission in medium and high voltage applications. Developed to provide a flexible connection for busbars, it can be used to connect various types of pipes and round conductors. This maintenance-friendly and easy-to-install solution compensates for thermal expansion and vibrations.

Conductor Diameters Available: Ø55 / Ø60 / Ø70 / Ø75 / Ø80 / Ø100 / Ø110 (other sizes available on request)

 

Field of Application

• Flexible connector for busbar systems, such as connecting transformers, switchgear, and generators

Product Features

• Flexible connection between conduits and/or round conductors
• Compensates for thermal expansion
• Composed of multiple expansion bands and two clamping bodies
• Made from highly conductive aluminum
• Silver-plated contact surfaces available for compatibility with other conductor materials, such as copper

Advantages

• Tailored solution for aluminum conductors
• Current transmission across the entire conductor circumference at the contact point
• Easy installation
• Compensation for assembly tolerances
• Pre-assembled stainless steel screw connections
• No welding required on the conductor rails
• Maintenance-free throughout the entire service life
• Tested and verified by an independent laboratory (Karlsruhe Institute of Technology (KIT))

Tests/Simulations

• Successful type test based on IEC 61238-1:2003
• Modeling of relaxation time using FEM simulation, with results verified through heating cycles