Post by flippyff on Jan 31, 2015 10:55:02 GMT
ted.europa.eu/udl?uri=TED:NOTICE:36866-2015:TEXT:EN:HTML
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Title attributed to the contract by the contracting entity:
AC Traction Motor (92TS — Central Line).
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Short description of the contract or purchase(s):
London Underground Ltd. (LUL) is seeking to procure a new traction system for its Central Line fleet, the 92 Tube Stock — known as the 92TS, in order to resolve reliability and obsolescence issues. This involves 2 800 motors and their control equipment, spread over a fleet of 85 trains. As part of this work LU are seeking the design and supply of a replacement system, as well as work to test prototype equipment. At LUL's discretion three is also a possibility that LUL will require installation of the equipment on the fleet. LUL is seeking to engage a ‘tier-1’ supplier who will provide a ‘turnkey’ solution, using either its in house resource or a combination of lower tier suppliers.
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Additional information:
Background:
The Central Line 92TS was built between 1992 and 1995 and consists of 85 eight car trains, which have operated since 1999. The fleet was designed for a nominal 36 year life, with replacement originally envisaged around 2033.
The 92TS was introduced with a Direct Current (DC) traction system comprising of all axles being motored with 2720 motors fitted to the fleet. The traction control system was an early bespoke electronic system, based upon 1980's electronics. This is the only London Underground stock designed and fitted with this type of traction system.
All stocks introduced post 92TS are now fitted with Alternating Current (AC) based traction systems controlled with electronics and powered by inverters. The existing 92TS traction system could be described as an intermediate step in the evolution of traction packages.
The existing DC traction system fitted to Central Line 92TS is responsible for the highest impact on fleet availability of any sub system on the train (even with the various mitigation activities in place).
The Central line fleet frequently does not meet the service peak requirement of 76 trains; this can often be attributed traction issues. By replacing the traction system, the service provision will be will improved and strengthened (modern AC Traction systems are highly reliable).
Requirement:
The requirement is to replace the existing DC traction system with a modern Alternating Current (AC) traction package in line with all modern metro trains. There is widespread experience across the rail industry with ‘re-tractioning’ DC fleets with modern AC packages.
This procurement is to replace the DC traction motors with an AC alternative (approximately 2800 motors including some spares), within the existing bogie space envelope. The traction control and power circuits will be replaced, where necessary, with modern hardware; noting that there is no plan to change the Combined Traction Brake Controller (CTBC).
<snip>
<snip>
Title attributed to the contract by the contracting entity:
AC Traction Motor (92TS — Central Line).
<snip>
Short description of the contract or purchase(s):
London Underground Ltd. (LUL) is seeking to procure a new traction system for its Central Line fleet, the 92 Tube Stock — known as the 92TS, in order to resolve reliability and obsolescence issues. This involves 2 800 motors and their control equipment, spread over a fleet of 85 trains. As part of this work LU are seeking the design and supply of a replacement system, as well as work to test prototype equipment. At LUL's discretion three is also a possibility that LUL will require installation of the equipment on the fleet. LUL is seeking to engage a ‘tier-1’ supplier who will provide a ‘turnkey’ solution, using either its in house resource or a combination of lower tier suppliers.
<snip>
Additional information:
Background:
The Central Line 92TS was built between 1992 and 1995 and consists of 85 eight car trains, which have operated since 1999. The fleet was designed for a nominal 36 year life, with replacement originally envisaged around 2033.
The 92TS was introduced with a Direct Current (DC) traction system comprising of all axles being motored with 2720 motors fitted to the fleet. The traction control system was an early bespoke electronic system, based upon 1980's electronics. This is the only London Underground stock designed and fitted with this type of traction system.
All stocks introduced post 92TS are now fitted with Alternating Current (AC) based traction systems controlled with electronics and powered by inverters. The existing 92TS traction system could be described as an intermediate step in the evolution of traction packages.
The existing DC traction system fitted to Central Line 92TS is responsible for the highest impact on fleet availability of any sub system on the train (even with the various mitigation activities in place).
The Central line fleet frequently does not meet the service peak requirement of 76 trains; this can often be attributed traction issues. By replacing the traction system, the service provision will be will improved and strengthened (modern AC Traction systems are highly reliable).
Requirement:
The requirement is to replace the existing DC traction system with a modern Alternating Current (AC) traction package in line with all modern metro trains. There is widespread experience across the rail industry with ‘re-tractioning’ DC fleets with modern AC packages.
This procurement is to replace the DC traction motors with an AC alternative (approximately 2800 motors including some spares), within the existing bogie space envelope. The traction control and power circuits will be replaced, where necessary, with modern hardware; noting that there is no plan to change the Combined Traction Brake Controller (CTBC).
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