Be 4/6I 12302 | TrainsDepot.org

Be 4/6^I 12302

Also known as: Fb 2x2/3 11302

Registration country: Switzerland

Railway companies: SBB CFF FFS - Schweizerische Bundesbahnen / Chemins de fer fédéraux suisses / Ferrovie federali svizzere

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In service:

from 1917

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1917

June

In November 1913, the Swiss Federal Railways (SBB CFF FFS) decided to electrify the Gotthard route from Erstfeld to Biasca. With the outbreak of the First World War, the Swiss Federal Railways (SBB CFF FFS) were forced to ever greater schedule restrictions due to the coal shortages (by the autumn of 1918, all trains were stopped on Sundays, with the exception of the milk trains). The SBB were forced to electrify more and more routes and the electrification of the Gotthard route was completed in 1920. SBB urgently needed passenger and freight train locomotives for operation.

Initially marked as Fb 2x2/3 11302, the locomotive is part of a series of 4 locomotives ordered by the Swiss Federal Railways (SBB CFF FFS) in June 1917 for testing purposes to prepare series orders. The other 3 engines are Fc 2x3/4 12201 (later Ce 6/8^I 14201), Fb 2x2/3 11301 (later Be 4/6 12301) and Fb 3/5 11201 (later Be 3/5 12201).

The technical specifications asked by the Swiss Federal Railways (SBB CFF FFS) for the new electric locomotives were:
- maximum running weight: 7 t/m;
- maximum axle load: 18 t (at a later, after adaptation of the infrastructure: 20 t);
- capable of pulling a wagon load of 430 t on a 26 ‰ gradient at a speed of 35 km/h;
- safe starting with this load on a 26 ‰ gradient and capable of reaching 35 km/h within 4 minutes;
- capable of two round trips Arth-Goldau - Chiasso (780 km) within 28 hours;
- electric recuperation braking system for decelerating the locomotive on a 26 ‰ gradient during 15 minutes without damage.

Apart from complying with the specifications, the Swiss Federal Railways (SBB CFF FFS) gave the design engineers great freedom to work out the designs.

Sources: https://de.wikipedia.org/wiki/SBB_Fb_2x2/3_11302

1920

May

The locomotive receives its new designation Be 4/6 12302.

Sources: https://de.wikipedia.org/wiki/SBB_Fb_2x2/3_11302

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Latest update on the 10th of January 2020 at 22:29

Contributor(s): Tudor C.

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