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http://en.wikipedia.org/wiki/Railway_electrification_system
Most electrification systems use overhead wires, but third rail is an option up to about 1200 V. While use of a third rail does not require the use of
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DC, in practice all third-rail systems use DC because it can carry 41% more power than an AC system operating at the same peak voltage. Third rail is more compact than overhead wires and can be used in smaller-diameter tunnels, an important factor for subway systems. Third rail systems can be designed to use top contact, side contact, or bottom contact. Top contact is less safe, as the live rail is exposed to people treading on the rail unless an insulating hood is provided. Side- and bottom-contact third rail can easily have safety shields incorporated, carried by the rail itself. Uncovered top-contact third rails are vulnerable to disruption caused by ice, snow, and fallen leaves. DC systems are limited to relatively low voltages, and this can limit the size and speed of trains and the amount of air-conditioning the trains can provide.
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http://www.seminarinformation.com/qqbqdr/fundamentals-of-gear-design-and-application
Seminar Overview This seminar will give the attendee a solid and fundamental understanding of gear geometry, types and arrangements, and design principles.
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Get the tools needed to understand the inter-relation and coordinated motion operating within gear pairs and multi-gear trains. Learn the basic gear system design process and gear measurement and inspection techniques. 2 days. 1.3 CEUs. Includes lunch and refreshments. Fee per person: $1135, $1015 for SAE members. Provider: $1,135 Topic ( s ) : Manufacturing Who Should Attend? Powertrain engineers, engineering directors and managers, component suppliers, vehicle platform powertrain development specialists, all those involved in the design and application of geared systems and assemblies Detailed Overview/Outline The intent of this seminar is to give the attendee a solid and fundamental understanding of gear geometry, types and arrangements, and design principles. Starting with the basic definitions of gears, conjugate motion, and th
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http://www.railtech.biz/index.php
Railway Technology Consultants Limited.... Railway Technology Consultants Limited was launched under its present name in January 2006. It brings together
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a wealth of experience in railway EMC consultancy and railway EMC & Vibration testing. The previous company A Hines Engineering Limited began trading in 1998 and was born out of experience gained within the engineering and research functions of British Rail. Specialist knowledge in the area of railway electromagnetic compatibility (EMC), and in particular Signalling & Traction compatibility and EMC & Vibration testing, forms the foundation of this company. read more ... EMC & Vibration Testing... All new or modified electronic/electrical equipment supplied to the railway industry must go through EMC approvals as required by UK law to comply with the EEC Directive on EMC 89/336/EEC and to demonstrate that it sufficiently electromagnetically robust to survive in the railway environment.
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http://sciencelinks.jp/j-east/article/200108/000020010801A0189871.php
Abstract; Recently, various electrical equipment and radio equipment are being used in a wide range. Therefore, radio interference due to disturbance waves
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radiated from such equipment are now public concerns in general. The problem of these radio interference phenomena is discussed internationally, and many international standards have been established on the measuring methods and limits for the strength of radiated disturbance waves. Electric traction systems will potentially radiate disturbance waves to cause radio interference, because they are using high electric power. IEC International Special Committee on Radio Interference (CISPR) and IEC Technical Committee 9 (IEC/TC9: Railway Applications) are separately standardizing the measuring method and limits for Electromagnetic Compatibility (EMC) on electric traction systems. The radio interference from electric traction systems has been discussed by CISPR, and a draft of CISPR Publication (standardized document) is being draw up. A
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http://manchester.floodlight.co.uk/manchester/course-details-reviews/institution-of-engineering-and-technology-(the)/electric-traction-systems-ets/16180339/28739818/course-info.html
Back to: courses in Manchester View all courses at Course details How long is the course? 5 days Attendance pattern Short Courses Course qualification
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No qualification or certificate When does the course begin? 03-Nov-08 Course info This course covers the following topics: fundamentals of traction systems, traction drives: conventional and power electronic, traction software, train simulation and risk management, interfaces between traction systems and the infrastructure and maintenance and commissioning. How much will it cost? £1545.13 including VAT for members; £2132.63 including VAT for Non members Where is the course held? ( view on a map ) Manchester Conference Centre Institution Of Engineering And Technology (The) Weston Building Sackville Street Manchester Greater Manchester M1 3BB
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http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=581216
Abstract The railway traction environment contains many noise sources and receivers, and is considered to be EMI unfriendly because of the mixing of power,
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information and communications signals in space, time and frequency. Railway EMC has received much attention for 30 years following the development of converter-fed traction drives and computerised signalling systems. This article covers systems issues including the fundamentals of electromagnetic coupling, disturbance noise sources and receiver susceptibility. The article discusses EM noise sources in traction systems including: rectifier and transformer substations; track and traction line; vehicles and drives; radiative emissions (RFI); and signalling equipment. The article then discusses track and equipment susceptibility to EMI including: track and traction line impedance; traction drive impedance; track signalling system impedance; and track circuit receivers
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http://ieeexplore.ieee.org/iel5/4243563/4243564/04243601.pdf?tp=&isnumber=4243564&arnumber=4243601
AC and DC Electric Railway Interfaces Jordan, N.; Palmer, M. Professional Development Course on Railway Electrification Infrastructure and Systems, 2007
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3rd IET Volume , Issue , 14-18 May 2007 Page(s):253 - 258 Digital Object Identifier Summary: Not Available » View citation and abstract Log in by entering your IEEE Web Account Username and Password. IEEE Communications Society members: If you subscribe to the IEEE Electronic Periodicals Package or IEEE Electronic Periodicals Package Plus, you must access your subscription at www.comsoc.org . Check with your librarian, information professional, or system manager to determine if you need to log in. Please complete the online Technical Support Form if you need assistance.
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http://conferences.theiet.org/ets/
Welcome to ETS 2008 The last 30 years has seen a significant development in railway traction, with the debate on energy and emissions in transport now
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high on the political agenda. There are key challenges ahead for railway traction engineers, providing many exciting opportunities. This professional development course is designed to provide delegates with a clear, concise grounding in the fundamentals of railway electric traction technology , whilst looking at current and future practice in traction design and systems interface issues, from both a technical and managerial view. Read more about this event. Register for this course IET Discover Try out our new social bookmarking site and find useful railway-related and other engineering and technology resources. Search peer-reviewed articles, reports and resources that other engineers are finding useful. © 2008 The Institution of Engineering and Technology. The Institution of Engineering and Technology is registered as a Charity in Engla
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