Signalling Power Supply Design and Equipment (Standard)


Type of product being suggested:
Standard
Title of product being suggested:
Signalling power supply design and equipment
Date of suggestion:
Feb 2016
Reason for suggestion:
Product and performance harmonisation and matching to open source market.
To ensure power supply design matches signalling equipment requirements.
Sponsored by RISSB Standing Committee:
TCSSC
Scope:
Provides guidance for design and performance criteria for a distributed power Addresses safety
requirements.

  • Limited to “low voltage”
  • Lifecycle
  • Signalling system power requirement analysis
  • RAMS and quality of service
  • Failure modes and degraded performance
  • Harmonisation of interfaces
  • Signalling system loading variability
  • Environmental performance
  • Electrical safety multiple points of supply
  • Power factor
  • Safe approach distance between different equipment on different supplies discrimination
Hazard identification:
1
 9.9 Power supply failure (Design)
2
 9.22 Power supply failure (Construction)
3
 9.31 Power supply failure (Test and Commission)
4
 9.41 Power supply failure (Operations)
5
 9.51 Power supply (Maintenance)
6
 9.61 Power supply failure (decommission)

Benefits:

Safety risk
Availability of primary signalling safety system
Electrical safety multiple points of supply
Interoperability / harmonisation
Open source type approved equipment for signalling use.
Financial
Should bring design capability in-house