thehindubusinessline.com/2008/06/27/stories/2008062752450700.htm

The new series has been tested and cleared by the research wing of
the Railways.

Kolkata, June 26

Stone India Ltd’s in-house R&D setup has designed and developed a
pantograph (a power collecting trolley) to be used in locomotives
deployed for experimental run of double stack container trains being
planned for the proposed dedicated freight corridor, according to
company sources.

The experimental run is to take place shortly in certain sections
under the East Coast Railway.

The new series of pantograph, called Omniversal Intelipanto TM, has
been tested and cleared by the Research Design & Standards
Organisation (RDSO) of the Indian Railways, say the sources, adding
that the experts from Japan, the funding country for the proposed
freight corridor, too, have approved the equipment.

Big challenge

The major constraint in running high speed locomotives with double
stack container trains is the increase in what is called centenary
height from six metres to 7.5 metres. To balance such a high reach
pantograph in double stack containers moving at a high speed in
adverse wind condition has been a big challenge for all global
suppliers.

The Kolkata-based Stone India Ltd, which has been catering to the
requirement of the Indian Railways for more than 76 years and has
introduced many critical systems for the Railways in partnerships
with foreign companies, hopes to export the new series of
indigenously-developed pantographs to countries planning to use
electric traction for running double stack container trains, add the
sources.