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Big order for Vossloh Kiepe UK


Refurbishment of 91 electrical multiple units of the public transport operator South West Trains in Great Britain

The UK subsidiary of Vossloh Kiepe is going to upgrade altogether 91 EMUs of the Porterbook Leasing Company with advanced energy-saving traction equipment. After the upgrade the vehicles will be able to recuperate braking energy. The class 455 trains, which are operated by the transport company South West Trains, will be among the first upgraded EMUs in Great Britain.



Vossloh Kiepe UK, the rail technology and engineering firm formerly known as Transys Projects Ltd, will be responsible for the design and the integration engineering of the integrated electronic traction equipment, which will be supplied by its parent company, Vossloh Kiepe GmbH.

The advantage of this system is that the traction motors are used as generators in the braking mode. The braking energy generated can be fed back in the traction power supply and used by other trains on the network at that instant. Depending on the conditions, the energy consumption can be reduced by up to 30 per cent.

Moreover, the new electro-dynamic brakes on the motor car will be combined with the conventional friction brakes on the four passenger cars, which reduces the wear of brake pads and wheel discs, providing a further cost saving.

“This is a cutting edge technology that can transform older units into modern trains which meet today’s most pressing business needs - reduced running costs and better use of energy”, explained Vossloh Kiepe UK’s managing director Graham Roberts. “The new three-phase AC solid state traction equipment is designed to reduce the number of moving parts, meaning there is less to maintain, service or replace.”

Vossloh Kiepe UK is already vastly experienced in managing complex refurbishments on entire fleets. An efficient and controlled design package and site management plan will ensure that only two units will be out of service at any one time and that the refurbishment of one unit will take only six days once production is in full flow.


The work is going to begin at the Wimbledon depot in January 2014. At the end of May 2014 the first modified Class 455 unit will be ready for testing and in November 2014 it will be put into service. It is anticipated to modify the remaining 90 EMUs at the Eastleigh depot.

Düsseldorf, June 2013



Vossloh Kiepe GmbH

Tel.: 49 (0)211 7497 428

E-Mail: info@vkd.vossloh.com