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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#16
January 18th 08, 09:05 PM
posted to uk.transport.london,uk.railway
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North London Line AC/DC question
Boltar wrote:
Boltar wrote: Why do the trains on the NLL switch over to 25Kv AC at Hackney Wick and then switch back to DC at Dalston when the 3rd rail is continuous along that section anyway? Why not just stay on DC and save the wear and tear on the pantograph? B2003 Why do the trains on the NLL switch over to 25Kv AC at Hackney Wick and then switch back to DC at Dalston when the 3rd rail is continuous along that section anyway? Why not just stay on DC and save the wear and tear on the pantograph? B2003 IIRC the 313s are governed to 30mph in DC Mode for Moorgate reasons. I don't know linespeeds on that section but it may make a difference |
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