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2BB2 400 — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/2BB2_400
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-06T12:12:39.312Z
SHA-256 of the archived text: ab40609b6fa3f652451fcc084a8851318218baaca93029165d23ddd3971c1c95
Stable URL of this page: https://metraipolis.com/documento/dc_eee58bf96282

How to cite

2BB2 400 — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/2BB2_400 (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_eee58bf96282 (Metraipolis archive dc_eee58bf96282, sha256 ab40609b6fa3f652451fcc084a8851318218baaca93029165d23ddd3971c1c95)

BibTeX

@misc{dceee58bf96282,
  title = {2BB2 400 — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/2BB2_400},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_eee58bf96282; sha256 ab40609b6fa3f652451fcc084a8851318218baaca93029165d23ddd3971c1c95},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/2BB2_400. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The 2BB2 400 class were two electric locomotives built in 1926 for the Paris Orléans (PO) railway of France. After wartime coal shortages during World War I, post-war reconstruction from 1919 focussed on electrification, powered by hydro electricity. In 1923 the PO began electrification of the 200 km section of the Toulouse main line from Paris to Vierzon using a supply of 1,500 V DC. The Ganz Works of Budapest, Hungary supplied these two locomotives, to the design of Kálmán Kandó. The arrangement of the locomotives was unusual for DC locomotives and may have been influenced by Kandó's other designs for AC locomotives, with the large diameter frame-mounted AC motors of the period. The four DC motors were mounted rigidly on the frame, above the driving wheels. Each motor drove an external jackshaft crank, with the four driving axles coupled in pairs. Drive between the motor jackshafts and the wheels was by coupling rods. As express passenger locomotives, this also permitted large diameter driving wheels, rather than small-wheeled bogies beneath the frames. Suspension travel between the driven wheels and the fixed motors was achieved through Kandó's triangular linkage design (E401: "hyperstatic" with top linkage rod between motor cranks, E402: "isostatic" without such top cross-linkage rod. The coupled wheels, rather than individual traction motors, enhanced resistance to wheelslip. This advantage was recognised and influenced future French designs, such as the typically French monomotor bogie rather than the axle-hung traction motors used elsewhere. Further, the pilot and trailing trucks under the through main frame were specially-designed by K.de Kandó in guiding both adjacent (!) driving axles; it might be considered a combination of Krauss-Helmholtz, Krauss-Lotter pilot, and Beugniot-Baldwin trucks, but featured some intricacies for a gradual transfer of guiding flange forces to the driving axles. In service, the locomotives proved fast and powerful, but were unreliable. When other passenger locomotives became available, they were restricted to freight work at up to 80 kilometres per hour (50 mph). Despite this they were popular with their crews, encouraged by the French practice of attaching crews to the same locomotive. They gained the class nickname, Les Belles Hongroises. Their later years were spent in freight-only service based at Limoges. They survived into SNCF service until 1938, keeping their original numbers, but were withdrawn and scrapped that year.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «2BB2 400» — https://en.wikipedia.org/wiki/2BB2_400
Wikidata Q2815765: «class of 2 early French electric locomotives» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q2815765
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/2BB2_400?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1381293789, consultata il 2026-11-06T12:09:59.968Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: f571397aa7ab5cc7b35ec082a25eacda472d75f54ed18cafdda39f6ddb718d6b