Solutions for stations, signalling, communications and on-board auxiliary power, assessed together with environmental conditions, maintenance access and operational continuity.
The appropriate architecture is defined by critical functions, load behaviour, maintenance paths and site conditions, as well as equipment ratings.
Power-continuity requirements
Uninterrupted supply for signalling and communications
Remote alarm and status monitoring at distributed sites
System construction suited to vibration, temperature and limited maintenance access
Controlled power continuity for station and trackside equipment
Critical loads
Signalling and point control
Communications and passenger information
Station control and security systems
On-board or stationary auxiliary DC/AC loads
PROPOSED ARCHITECTURE
A traceable chain from source to critical load.
Grid or traction auxiliary supply
UPS/rectifier and battery
Critical AC/DC distribution
Local monitoring
Signalling and communications
This diagram shows a typical solution approach. Final topology is established using the load list, single-failure criteria, operating philosophy and approved project data.
ENGINEERING DECISIONS
Redundancy, protection and monitoring are assessed together.
Redundancy strategy
Centralised or distributed redundant supply points
Load transfer and bypass planning during maintenance
A/B supply options for critical communications
Protection strategy
Voltage-drop and protection coordination based on cable distances
DC pole and short-circuit protection
Enclosures, terminals and mechanical protection suited to site conditions
Control and monitoring
Remote station alarm summaries
Battery voltage, temperature and supply condition
Dry-contact or communications interfaces to central monitoring
PROJECT INPUTS
What information is required for correct selection?
Share the information available at the initial quotation stage. Outstanding technical data can be clarified during the site survey and engineering review.
Track, station and equipment layout
AC/DC load list for each supply point
Autonomy and supply-restoration scenarios
Cable distances, environment and vibration conditions
Central monitoring requirements and alarm matrix
EKA DELIVERY SCOPE
Defined responsibilities from calculation to commissioning.
Capacity calculations for each supply point
UPS/rectifier, battery and panel integration
Enclosures, racks and connection accessories
Site labelling and maintenance documentation
FAT — factory acceptance testing
Load and alarm scenarios
Battery charging and bypass functions
Mechanical and connection checks
Remote-monitoring signal simulation
SAT and commissioning
Site cable and earthing checks
Voltage-drop and load measurements
End-to-end central-monitoring tests
Commissioning and maintenance-team training
Discuss your facility’s requirements.
Share the critical-load list, autonomy target and existing power architecture with our engineering team.
Request a quoteTR