At what voltage does the Kolkata metro run?

Hello guys,
This is just an informative post for the people of the city of joy.Everyday approximately 700000 people travel by Kolkata metro.Even I do.So just to inform you that the third line,red one is the power line of 750 volt DC.Yes it is DC not AC.I have heard people telling the voltage to be 25000volt but it is not true.So just to get your facts right it is 750 volt dc.I hope know it is clear to all.You can also Google it and know other facts about Kolkata metro.
Thanks...

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