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Blog Entry# 629461
Posted: Jan 02 2013 (16:22)

83 Responses
Last Response: Jun 04 2013 (15:43)
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Jan 02 2013 (16:22)   HYB/Hyderabad Deccan Nampally (6 PFs)
 
WDP 4
WDP 4   367 blog posts
Entry# 629461            Tags  
HYB METRO UPDATE
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Overhead uninterrupted power line for metro
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The metro rail project will have an overhead 25 KV power line across the 72-km viaduct being constructed in the three corridors. Initially, the
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authorities thought of having the power line between the tracks as is prevalent in Europe which also provides an aesthetic look.
But after consulting experts and studying the power systems of some existing metro lines, it was decided to go in for an overhead line, said Hyderabad Metro Rail (HMR) Managing Director N.V.S. Reddy. “We will be striving to come up with a better design to compensate for the overhead traction line,” he said.
Tie-up with Transco
HMR has tied up with APTransco for uninterrupted power supply to the railway traction and also for the stations and depots. About 75 MW of power will be required a day for the project. Transco will be supplying 130 KV power, which will be scaled to 25 KV for the traction. It will 35 KV for the other auxiliary services at the depots/stations.
Four key substations are coming up for the project at Uppal, Miyapur, Yousufguda and Mahatma Gandhi Bus Station (MGBS) Imliban. Construction at the five-acre Uppal site inside the depot is in an advanced stage of completion, while work on the Miyapur substation is set to begin on another five-acre site. These two are the main power receiving stations.
Free land to Transco
It is the same case with the Yousufguda substation where construction is expected to begin soon. Land at MGBS is yet to be delineated and these substations will be on one-acre sites each. Land has been given free to Transco for constructing these facilities with built in redundancies and extra cabling.
“The power supply system is being designed in such a manner that power can be drawn seamlessly from across any of the three corridors in case of a problem or failure on a particular stretch or corridor,” explained Mr. Reddy.
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Mar 21 2013 (16:17)
WDP 4   367 blog posts
Re# 629461-40              
First lot of French rails for metro arriving.
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The shipment of 5,000 metre rails is on its way to city by road on special trailers of 60 ft length having arrived in Mumbai
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The
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first lot of 5,000 metre rails from Tata Steel, France, for the Hyderabad Metro Rail project is on the way to the capital by road on special trailers of 60 ft length having arrived by ship to Mumbai few days ago.
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These rails which are 18 metres long and weigh about 1,100 kg each will soon be laid down as tracks in the Uppal depotofficials of the L&T Metro Rail Hyderabad (L&TMRH) announced on Wednesday.
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The ‘wear resistant head hardened rails’ are being procured to cater to the sharp curves and steep gradients in the project. The rails are more durable and with a life span of double to that of the traditional rails.
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These rails are also used in all major railway projects in the world as well as the country, the officials said.
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“It’s another important milestone for the Hyderabad Metro Rail Project giving an indication about the progress of the works. The track laying work will be commencing soon in the Uppal Depot. It also marks the beginning of the utilisation of international expertise for the project,” said L&TMRH Chief Executive Officer and Managing Director V.B. Gadgil.
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The CEO pointed out that due to the sharp curves across the three corridors where the metro is under construction, check rails are being provided on all curves of less than 190m radius. This is to prevent the trains from derailing while negotiating such sharp curves. Check rails are 18 metres long and weigh about 600 kg each.
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Earlier, L&TMRH head of railway systems, Anil Kumar Saini, personally inspected the first lot of rails at the Tata Steel plant in France before they were shipped to Mumbai from Antwerp. The metro rail project to be built across the 72 km across the three corridors will need a total of 22,500 metric tonnes of rails. The rails will be procured in six lots as per the project schedule, officials said.
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The first lot of rails that arrived at Mumbai from the Tata plant in France.
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