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Likström genom jorden stoppade järnvägstrafiken 1946 (Elektrifiering/elektrisk drift)

av Gunnar Ekeving, Wednesday, June 29, 2011, 22:34 (4907 dagar sedan)

På Saltsjöbanan blev det ett drygt tio minuters planerat driftstopp en natt i september 1946:

[image]

Kan det ha handlat om försök med överföring av högspänd likström? Att försöket omfattade hela landet låter egendomligt. Man undrar om även den växelströmsmatade järnvägsdriften hos t ex SJ omfattades av stoppet?

Lite egendomligt att även ångloken måste förbli stillastående under de tio minuter försöket skulle pågå.

Hela tråden:

 

Time: 333
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE pid = 0 AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0) AND category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27)

Time: 1209
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE (mlf2_akismet_rating.spam = 1 OR mlf2_b8_rating.spam = 1)
Time: 1403
SELECT COUNT(*) FROM mlf2_entries LEFT JOIN mlf2_akismet_rating ON mlf2_akismet_rating.eid = mlf2_entries.id LEFT JOIN mlf2_b8_rating ON mlf2_b8_rating.eid = mlf2_entries.id WHERE category IN (0, 4, 5, 6, 7, 8, 9, 25, 14, 23, 19, 22, 24, 10, 21, 11, 12, 13, 15, 16, 26, 18, 20, 27) AND (mlf2_akismet_rating.spam = 0 AND mlf2_b8_rating.spam = 0)

Total time: 2955