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EMC on the Railways

2. Electrical Systems Compatibility. Key risk area for all new projects Particularly electric trainsWorldwide issueAim is to design trains which are compatible with the infrastructure on which they runThis is the means by which we satisfy our customers. 3. What does a rolling stock manufactu

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EMC on the Railways

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    1. EMC on the Railways A Rolling Stock Manufacturer�s Perspective

    2. 2 Electrical Systems Compatibility Key risk area for all new projects Particularly electric trains Worldwide issue Aim is to design trains which are compatible with the infrastructure on which they run This is the means by which we satisfy our customers

    3. 3 What does a rolling stock manufacturer need? A clear set of requirements at the start of design Design a train which meets the requirements Demonstrate that the requirements have been met Gain the necessary approvals Bring the train into service

    4. 4 What has happened in the past? Requirements were unclear at the start of the project Every project had to determine requirements, sometimes duplicating previous work EMC= Extra Money for Consultants The design had to proceed on the basis of worst case assumptions More requirements appeared when the train was built Train then had to be shown to meet requirements for which it was not designed Usually they were met, sometimes modifications were necessary

    5. 5 What we need from the infrastructure owners Definition of compatibility requirements for ALL infrastructure Track circuits Lineside systems Electrification Communications Neighbouring Railways Safety Targets Definition of the railway environment Electrification configuration Emissions from infrastructure Emissions from other trains

    6. 6 What Network Rail are mandated to do Group Standard GE/RT8015 Section B6: establish and maintain information on infrastructure systems, in relation to their susceptibility to EMI identify and document all safety- critical or safety related systems which could have their safety performance reduced due to EMI. Document the susceptibility of such systems Set safety targets Identify infrastructure emissions Provide the information on request to train operators and train builders All data available no later than 6 December 2003

    7. 7 What Network Rail have provided Industry Data Initiative (IDI) Track circuit susceptibility information generally complete Some information on other systems, but often incomplete Example: RT/E/C/50014 requirement for ATP: �line current at 100kHz should be less than a specified amount� Limited information on safety targets Documents are still draft Not clear that all requirements have been captured (e.g. nothing on regeneration) Route Asset Register (RAR) Expected to be a list of all infrastructure Does not appear to be readily available

    8. 8 What Network Rail have yet to provide Remaining susceptibility data Safety Targets Emissions from infrastructure Environment data Formally released documents

    9. 9 Summary Present Status IDI in present state does not meet GE/RT8015 RAR status unclear The Way Forward Both initiatives to be completed and formally issued Suggest priority given to routes on which new rolling stock is to be introduced Issue a plan of action to the industry

    10. 10 Questions Discussion

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