Railway applications. Fixed installations. Particular requirements for alternating current switchgear - Disconnectors, earthing switches and switches with nominal voltage above 1 kV Ingestion-build-132972 - thread length of the

- thread length of the bolt according to ISO 888

This helps in controlling and selecting the frequency and devices

in building construction works

This is the first part of a two part standard on resistance welding weldability

Railway applications. Fixed installations. Particular requirements for alternating current switchgear - Disconnectors, earthing switches and switches with nominal voltage above 1 kV Ingestion-build-132972 - thread length of the1 Scope This European Standard is applicable to single pole and two pole alternating current (a. c.) disconnectors, earthing switches and switches which are: designed for indoor or outdoor fixed installations in tractions systems, and operated with an a. c. line voltage and frequency as specified in EN 50163. NOTE 1 EN 50163 specifies the a. c. traction systems 15 kV 16,7 Hz and 25 kV 50 Hz. NOTE 2 As rails of a. c. traction systems are connected to