Catenary is empty erected along the railway line to the special form of electric locomotive power transmission lines

Catenary is empty erected along the railway line to the special form of electric locomotive power transmission lines. The suspension from the contact support means, the positioning means, post and base of several parts.
Contact Electric transformer contact line, hanging strings, catenary and connecting parts and insulators. Contact suspension by supporting device mounted on pillars, and its function is obtained from the traction substation power transformers to electric locomotives. Support means for circuit breakers contact with suspension, and load pass pillars or other buildings. Where the interval under catenary, station and large buildings are different. Wrist and arm support device includes a horizontal rod, suspension insulator string, rod insulator and other buildings special support equipment.