EMC on the Railways

1
EMC on the Railways

• A Rolling Stock Manufacturers Perspective

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
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
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
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
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
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
What Network Rail have yet to provide

• Remaining susceptibility data
• Safety Targets
• Emissions from infrastructure
• Environment data
• Formally released documents

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

• Questions
• Discussion