Use of signalling relays

Use of signalling relays
Format : Downloadable
Ed. no.1 , October 2018
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    The UIC Signalling Expert Group (SEG) is a permanent expert group of the UIC RSF CCS & TLC sector. The expert group’s objective is to expand the ‘theory and technology underlying the control and safety of railway transport processes’, to maintain the system-specific expertise and to engage in an exchange of experience between system experts.
    The technical report ‘Use of Signalling Relays’ was drawn up by UIC SEG in collaboration with the system experts from a number of different infrastructure managers (IM). The aim of this report is to maintain the system-specific expertise required for the use of signalling relays in railway signalling systems, particularly with regard to:
    - avoiding systematic faults in relay circuits,
    - detecting random failures and
    - providing maintenance fit-for-purpose.
    This technical report will therefore treat the following themes:
    - Introduction to relay technology (focusing on signalling relays),
    - Faults and hazards to consider when using signalling relays,
    - Tried and proven measures that eliminate/reduce hazards,
    - Estimation of the efficacy of measures in dealing with given hazards, - Demonstration of measures relating to given circuits,
    - Basic theory and quantitative analyses,
    - Testing relay circuits,
    - Measures for maintenance,
    - Use of other components.



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