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by NikkiA
423 days ago
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ETH is a lot more than something a simple battery could provide. 1 ETH 'unit' is 5kW of power at 750-1000V AC. A train will usually require much more than 1 unit. HEP cars (aka 'generator cars') are a solution, but the UK never really had them, we had converted diesels called 'Ethels', which are functionally identical to the current practice of tagging a diesel locomotive at idle on the tail of the train, but all of those were scrapped. * Ethel => https://en.wikipedia.org/wiki/British_Rail_Class_25#Train_He... |
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