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After the disappointing news that Kenya's SGR is not going to support high speed rail the government has moved with speed to put in place plans to electrify the Mombasa-Nairobi line.
What is a high speed rail and what are the requirements for its operation? The International Union of Railways (IUC) defines high-speed rail as that capable of 250 km/h or more. To get a train to move at these speeds safely and efficiently is a technological challenge that has been developed, improved and continues to be perfected for close to 110 years now. High-speed rail must be powered by reliable electricity supply if high speeds have to be achieved. In general electric trains can be powered by direct current (DC) ranging from 750 to 3000 volts (V) or alternating current (AC) starting from 15000 to 25000 volts (i.e. 15 kV to 25 kV) and even higher.
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