Our Clients include railway administrations and infrastructure owners, regulatory authorities, train operators, new build contractors, infrastructure maintainers, equipment manufacturers, services providers, transport and other consultancies.

Project and Technical Support
> Independent technical review of major mainline/regional a.c. electrification project
> Design cost and performance optimization of major regional d.c. electrification project
> System design and independent compliance review for shore supply project within rolling stock depots
> Thermal performance of power supply equipment with increased power demand
> Independent technical assessment of d.c. traction switchgear
> Pre-feasibility study of subsurface metro line power supply upgrade
> Recommendations for new/relocated a.c. and d.c. traction power substations
> Recommendations for design of third rail conductor system at test track
> Traction power supply system design within rolling stock maintenance depots


Technical Investigations, including recommendations
> Safe use of track laying machine on a.c. electrified lines
> Electromagnetic compatibility (EMC) effects within surface and subsurface railways
> Touch potentials at designated earthing points - 25 kV a.c. system
> Induced voltages in d.c. electrified railway
> Overhead line incidents (dewirements) on main line routes
> 25kV a.c. overhead line impedance of surface railway
> Short circuit d.c. transient component at 25 kV a.c. grid supply points


Preparation of Standards, Specifications and other Procurement Documentation
> Autotransformer based electrification scheme technical workscope
> Traction and other power supplies design performance standard
> Traction power supply equipment (750 V d.c. subsurface railway electrification)
> Traction power supply equipment (750 V d.c. main line electrification)
> Traction power supply equipment (25 kV a.c. main line electrification)
> Overhead line electrification systems
> Shore supply installations for depots
> Surface and subsurface depot shore supply installations for metro stock
> High voltage traction power supply and ancillary cables


Safety Related Guidance
> Management of recovery following overhead line incidents
> Safe use of work equipment within an operating railway environment
> Development of A.C. Electrified lines instructions
> Earthing and bonding guidance for surface and subsurface railways
> Isolation practices for static boosters/converters and harmonic dampers


High Speed and Conventional Interoperability
> Technical support for auditing of notified bodies
> Technical support for development of Technical Standards for Interoperability


Plant Asset Management Studies
> Operational effectiveness of underfloor wheel lathes


Training
> Technical support to graduate training programme on railway infrastructure


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Green Leader Limited is a registered company in Cardiff, England and Wales No:2543174
Registered Office: 21 Foxmoor Close, Oakley, Basingstoke, Hampshire RG23 7BQ, United Kingdom
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