Railway applications. Fixed installations. D.C. switchgear - General1 Scope The EN 50123 series specifies requirements for d. c. switchgear and controlgear and is intended to be used in fixed electrical installations with nominal voltage not exceeding 3 000 V d. c., which supply electrical power to vehicles for public guided transport, i. e. railway vehicles, tramway vehicles, underground vehicles and trolley buses. Part 1 specifies general requirements. The other parts are covering Part 2 D. C. circuit breakers, Part

and good operation and management

BS 7335-1 specifically addresses the casting of replacement linings with refractory materials bonded by calcium aluminate cement

BS ISO/IEC TR 13335 Part 1 provides a high-level management overview

BS EN 1464 specifies a floating roller method for the determination of the peel resistance of adhesive bonds between one rigid adherend and one flexible adherend when tested under specified conditions of preparation and testing

Electrical wire manufacturers and suppliers

hitches for towing

— automatic tool change (see clause 5)

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details of this series are given in the annex to EN ISO 15607:2003

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Manufacturers of electronics components