SJ O
Encyclopedia
O is a series of electric locomotive
s used by Statens Järnvägar
for hauling heavy iron ore trains on Malmbanan
in Sweden. The locomotives were built by ASEA
.
started testing out technology with a test unit in 1908, and by 1914 the first Oa locomotive was delivered, along with the passenger hauling Pa
. At first it was the northern part of Malmbanan, from Kiruna
to Narvik
that was electrified. The steam locomotives had been hauling 28 wagons at 10 km/h, but the new agreement signed in 1913 with LKAB
meant that SJ had to haul 40 wagons at 30 km/h to transport enough ore. The solution lay in a joint production between Siemens
of Germany and ASEA. The Siemens locomotives were designated Oa while the ASEA locomotives were designated Ob. The trains had 657 kW
motors.
These stayed in service on the northern section until 1923 when the southern section to Luleå
also was electrified, at which time they were moved to the southern section. A new series of Oe and Of locomotives were delivered. In the 1950s when larger trains were put into service, some of the Ofs were rebuilt to triple units, designated Of3. They were also supplemented with the new Dm
-series that eventually replaced them.
Electric locomotive
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or an on-board energy storage device...
s used by Statens Järnvägar
Statens Järnvägar
The Swedish State Railways or SJ, originally the Royal Railway Board , is a former government agency responsible for operating the state railways in Sweden....
for hauling heavy iron ore trains on Malmbanan
Malmbanan
The Iron Ore Line is a long railway line between Riksgränsen and Boden in Norrbotten County, Sweden. The line contains two branches, from Kiruna to Svappavaara and from Gällivare to Koskullskulle. The term is often colloquially used to also include the Ofoten Line, from Riksgränsen to Narvik in...
in Sweden. The locomotives were built by ASEA
ASEA
Allmänna Svenska Elektriska Aktiebolaget was a Swedish industry company. It merged with the Swiss Brown, Boveri & Cie in 1988 to form Asea Brown Boveri...
.
History
The O series was built for the first electrified railway in Sweden, Malmbanan. ASEAASEA
Allmänna Svenska Elektriska Aktiebolaget was a Swedish industry company. It merged with the Swiss Brown, Boveri & Cie in 1988 to form Asea Brown Boveri...
started testing out technology with a test unit in 1908, and by 1914 the first Oa locomotive was delivered, along with the passenger hauling Pa
SJ Pa
Pa is an electric locomotive used by Statens Järnvägar for hauling passenger trains on Malmbanan. It was delivered by ASEA in 1914-15 and was in service until the 1950s. Malmbanan was the first electrified railway in Sweden, and SJ needed a fast locomotive to haul the passenger trains on the line....
. At first it was the northern part of Malmbanan, from Kiruna
Kiruna
Kiruna is the northernmost city in Sweden, situated in Lapland province, with 18,154 inhabitants in 2005. It is the seat of Kiruna Municipality Kiruna (Northern Sami: Giron, Finnish: Kiiruna) is the northernmost city in Sweden, situated in Lapland province, with 18,154 inhabitants in 2005. It is...
to Narvik
Narvik
is the third largest city and municipality in Nordland county, Norway by population. Narvik is located on the shores of the Narvik Fjord . The municipality is part of the Ofoten traditional region of North Norway, inside the arctic circle...
that was electrified. The steam locomotives had been hauling 28 wagons at 10 km/h, but the new agreement signed in 1913 with LKAB
LKAB
LKAB is a Swedish mining company. The company mines iron ore at Kiruna and at Malmberget in northern Sweden. The company was established in 1890, and has been 100% state-owned since the 1950s...
meant that SJ had to haul 40 wagons at 30 km/h to transport enough ore. The solution lay in a joint production between Siemens
Siemens AG
Siemens AG is a German multinational conglomerate company headquartered in Munich, Germany. It is the largest Europe-based electronics and electrical engineering company....
of Germany and ASEA. The Siemens locomotives were designated Oa while the ASEA locomotives were designated Ob. The trains had 657 kW
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...
motors.
These stayed in service on the northern section until 1923 when the southern section to Luleå
Luleå
- Transportation :Local buses are run by .A passenger train service is available from Luleå Centralstation on Sweden's national SJ railway service northbound to Narvik on the Norwegian coast, or southbound to Stockholm. See Rail transport in Sweden....
also was electrified, at which time they were moved to the southern section. A new series of Oe and Of locomotives were delivered. In the 1950s when larger trains were put into service, some of the Ofs were rebuilt to triple units, designated Of3. They were also supplemented with the new Dm
SJ Dm3
Dm and Dm3 is a series of locomotives used by Statens Järnvägar and later Malmtafik i Kiruna for pulling iron ore trains on Malmbanan in Sweden and Ofotbanen in Norway. A total of 39 double-locomotives were delivered between 1953 and 1971, built by ASEA. A further 19 center locomotives were...
-series that eventually replaced them.