Railway applications. Fixed installations. Particular requirements for alternating current switchgear - Disconnectors, earthing switches and switches with nominal voltage above 1 kV Ingestion-build-132972 This is the first part

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

This helps in controlling and selecting the frequency and devices

limited heat and flame and conspicuity is needed

- thread length of the bolt according to ISO 888

Note 1: The groups of organisms referred to are those listed in “Categorization of pathogens according to hazard and categories of containment” produced by the Advisory Committee on Dangerous Pathogens and published by HMSO

Railway applications. Fixed installations. Particular requirements for alternating current switchgear - Disconnectors, earthing switches and switches with nominal voltage above 1 kV Ingestion-build-132972 This is the first part1 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