Simplified OLE Installation Underneath Structures
Existing tunnel and bridge structures can present challenging environments for rail electrification projects. Low bridges, tightly curved tunnels and listed structures often mean that meeting target electrical clearances requires substantial structural alterations. Reconstruction, track lowering or bridge jacking will add significant project costs and disruption for possessions. Many OLE installations under these structures also add an ongoing maintenance burden to prevent leakage and flashovers.
PACE Networks provide a Low Profile Tunnel Solution and a range of bridge arms that will help you to successfully implement smaller overhead line clearances, reducing the need for reconstruction and making significant project cost savings. They are more adaptable to better fit the existing environment, simpler and lighter, meaning they are faster to install, and require less maintenance than alternatives.
A range of tunnel systems from Bonomi are available to suit your project’s requirements.
Contact PACE for more information >
An evolution of Bonomi’s proven rail electrification bridge and tunnel clearance technologies, this solution has been in service in Europe for 5 years. It is suitable for use with the UK Master Series and other design ranges.
The new solution fits into existing environments such as tight tunnel profiles and curvatures. The horizontal shed, flexibility in arm angle and adjustable contact wire/catenary position allow smaller clearances between contact wire clamps and the structure surface.
The tunnel solution is comprised of fewer components, is lighter than other systems and requires less heavy plant.
A horizontal shed at the head and HTV silicone insulating cover, with integrated sheds, mean the arm has reduced leakage and a lower risk of flash over. The solution provides better pollution performance and features 10% longer creepage distance than comparable systems.
The High Temperature Vulcanised silicone cover is applied in one single process in Bonomi’s insulator factory. This high quality housing has more than a 30 year track record and is used in solutions up to 500kV. The single mould housing reduces the need for pollution washing and in some applications the arm is maintenance free.
The bridge arms available provide the same benefits of improved clearances, faster installation, lower maintenance and whole project life cost savings.
Bonomi’s new “bullet head” design uses a compression fitting that has a quality control process built into the manufacture procedure. The design has been used for development testing by Network Rail is available for a range of designs.
Applied in one single process in Bonomi’s insulator factory, this High Temperature Vulcanised silicone cover has more than a 30 year track record and is used in solutions up to 500kV. This high quality housing lowers the risk of flash-over and improves pollution performance, in some application being maintenance free.
Pace Networks provide other bridge arms from Bonomi including the claw-end arm, with a catenary wire channel; the dome head arm; and the horizontal shed arm with a further reduced profile. Contact PACE for more information >
PACE Networks are your trusted UK stockists for Rail and Power Grid infrastructure, providing essential parts to the industry available for immediate delivery. Find out more >
We can stock and supply equipment to fit the needs of your project. Avoid the delays that might normally occur due to structure displacement or last-minute design updates. We provide both turnkey systems and point solutions, both of which can make the difference in achieving your project’s aims.
PACE Networks have long experience of rail electrification projects, working side-by-side with operators, contractors and manufacturers. We support the industry to realise project goals and increase whole life value.
The Bonomi insulated bridge arm is integral to the new VCC approach pioneered at Cardiff Intersection. The new design solution was implemented in 2018 for £1m (design and installation combined cost) while reconstruction, lowering and diversion options were costed at between £10m to £50m.
The project won a Railway Industry Innovation Award in 2018 and continues to receive award nominations.
(Source for figures: RIA Electrification Cost Challenge March 2019)
Discuss your next project with PACESurge Arrestors Also Available
Pace Networks supply a range of surge arrestors for power distribution and AC & DC rail applications. Contact Pace for information on our range from Bonomi and Tridelta.
