Dog Bone Profile of Class F and H has high mechanical strength，exceIlent electrical properties，superior thermal properties
Dog Bone Pultruded Profiles are made from glass fiber as reinforcement ，synthetic resin as matrix by pultrusion process. The resin matrix can be polyester，vinyl ester or epoxy resin.Dog Bone Pultruded Profiles have very smooth surface,high mechanical strength ，excellent electrical properties，superior flame resistance，high arc and carbon track resistance,and good thermal properties. Thermal class is available for Class F and H.
3.Application: Dogbone Pultruded Profiles are used extensively as insulating supports for coil winding in transformer ，switchgear and other types of electrical apparatus.
Water Absorption Rate
Dye Penetration Test
Water Diffusion Test
Electrical strength Test
ASTM D 149
ASTM D 349
Glass Transition Temp(TG)
5.We offer customized H class fiberglass dog bone for transformer .