Insulating Groove and Beam


Insulating groove and beam are insulating structural support elements for EHV DC transmission converter valves, which are molded by flame retardant epoxy resin glass cloth.

TMT Experience

In 2010, TMT signed a strategic cooperation agreement with CLP Puri Power Engineering Co.,Ltd.. After research and development, the product development was completed and recognized by customers in 2012.

In 2013, TMT signed a frame work purchase agreement with CLP Puri, with a procurement volume of 500 million RMB.


Insulating support elements have many excellent properties such as halogen free flame retardant and UL 94-V0level flame retardant level in line with the EU ROSH instruction. Furthermore, the load deformation is less than 4mm, dedicated production line of groove and beam is self-designed, mold design has been optimized, product cross-sectional dimension is uniform and the product design is optimized by using finite element analysis.

Insulating Materials