This page contains a Flash digital edition of a book.
ROLLING STOCK


Eversholt scopes out re-traction upgrades


RTM speaks to Richard Carrington, Eversholt Rail Group’s head of projects and procurement, and Vossloh Kiepe UK’s principal consultant Karl Barras about the potential for a traction system upgrade on Eversholt’s fl eet of Class 321 and 322 electric multiple units.


E


versholt Rail Group has taken the fi rst steps towards an upgrade that will enable its


large Class 321/322 fl eet to operate effi ciently until 2032, signifi cantly reduce maintenance costs and provide energy savings.


The traction upgrade will include the replacement of the present WSP system with the Knorr-Bremse EP98 brake control system. This will provide a modern brake blending system between the friction brake and Vossloh Kiepe traction system electric brake, which will return regenerating energy back into the overhead line, promising energy savings of around 17%.


With this goal in mind, the contract for a Feasibility Study was awarded to Vossloh Kiepe UK, formerly Transys Projects, in August 2012, for completion by March 2013. Richard Carrington, Eversholt Rail’s head of projects and procurement explained how important it was to investigate every reasonable opportunity to future-proof the fl eet, saying: “We’re pleased to have this opportunity to understand the feasibility of providing a new traction system for the Class 321, working with Vossloh Kiepe


UK to develop a new modifi cation. This will enable us to offer up-to-date rolling stock to our customers.”


The project encompasses all traction equipment design, installation design, procurement and installation of the Traction System Upgrade on Eversholt Rail Group’s Class 321 fl eet, as well as providing full certifi cation and a Safety Case for the new traction, auxiliary power and braking control systems. The aim is to take the design, safety case and associated processes to a ‘pre- concept’ stage. This will enable a full evaluation of the new traction system, the installation design and certifi cation as well as providing accurate pricing for the placement of a contract for the re-traction of a pre-production Class 321 and subsequently, fl eet modifi cation.


Vossloh Kiepe UK’s principal consultant Karl Barras added: “We’ve been asked to consider all major aspects of the new equipment, installation, operational issues, reliability and maintenance, safety engineering, energy and cost savings for the integration of modern technology into the existing Class 321 units prior to the upgrade of the fl eet.”


Above: Karl Barras


The upgrade will include the replacement of the present DC traction system with the Vossloh Kiepe modern 3-phase AC IGBT-based, liquid- cooled traction system. The new equipment will be contained in a single case, using the same mounting interfaces as the present traction case, and will be designed to be contained within the profi le of the present case.


The present DC traction motors will be replaced with lighter 3 phase AC traction motors arranged to use the same mounting interfaces with the bogie frame and axle suspension tube.


Below: A Greater Anglia Class 321.


i 50 | rail technology magazine Dec/Jan 13


More stories like this at:


www.railtechnologymagazine.com/ rolling-stock


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69  |  Page 70  |  Page 71  |  Page 72  |  Page 73  |  Page 74  |  Page 75  |  Page 76  |  Page 77  |  Page 78  |  Page 79  |  Page 80  |  Page 81  |  Page 82  |  Page 83  |  Page 84  |  Page 85  |  Page 86  |  Page 87  |  Page 88  |  Page 89  |  Page 90  |  Page 91  |  Page 92