121-716: The Bratsberg Line ( Norwegian : Bratsbergbanen ) is a 74-kilometre long (46 mi) railway line between Eidanger and Notodden in Telemark county, Norway . It opened in 1917, connecting the Tinnos Line , the Sørland Line and the Vestfold Line ; allowing Norsk Hydro to transport fertilizer from their plant at Rjukan to the port in Skien . Since 1991 only passenger trains are operated, using Class 69 stock by Vy . The railway
242-521: A dialect continuum of more or less mutually intelligible local and regional varieties; some Norwegian and Swedish dialects , in particular, are very close. These Scandinavian languages, together with Faroese and Icelandic as well as some extinct languages , constitute the North Germanic languages. Faroese and Icelandic are not mutually intelligible with Norwegian in their spoken form because continental Scandinavian has diverged from them. While
363-402: A (nearly) continuous conductor running along the track that usually takes one of two forms: an overhead line , suspended from poles or towers along the track or from structure or tunnel ceilings, or a third rail mounted at track level and contacted by a sliding " pickup shoe ". Both overhead wire and third-rail systems usually use the running rails as the return conductor, but some systems use
484-435: A distinct dialect at the level of farm clusters. Dialects are in some cases so dissimilar as to be unintelligible to unfamiliar listeners. Many linguists note a trend toward regionalization of dialects that diminishes the differences at such local levels; there is, however, a renewed interest in preserving dialects. Norwegian nouns are inflected for number (singular/plural) and for definiteness (indefinite/definite). In
605-539: A few dialects, definite nouns are also inflected for the dative case . Norwegian nouns belong to three noun classes (genders): masculine, feminine and neuter. All feminine nouns can optionally be inflected using masculine noun class morphology in Bokmål due to its Danish heritage. In comparison, the use of all three genders (including the feminine) is mandatory in Nynorsk. All Norwegian dialects have traditionally retained all
726-506: A fund for the later expropriation of the line. The final decision to build the line was made by parliament on 25 July 1913. An agreement with Norsk Transport was made on 4 October 1913, which dictated that the Tinnos Line was transferred to the state from 1 July earlier the same year. Construction started in 1913, with cost estimates at NOK 11.1 million; higher wages, inflation, lack of work force and geological difficulties around Skien pressed
847-400: A high, sharply falling pitch in the first syllable and a low pitch in the beginning of the second syllable. In both accents, these pitch movements are followed by a rise of intonational nature (phrase accent)—the size (and presence) of which signals emphasis or focus, and corresponds in function to the normal accent in languages that lack lexical tone , such as English. That rise culminates in
968-573: A higher total efficiency. Electricity for electric rail systems can also come from renewable energy , nuclear power , or other low-carbon sources, which do not emit pollution or emissions. Electric locomotives may easily be constructed with greater power output than most diesel locomotives. For passenger operation it is possible to provide enough power with diesel engines (see e.g. ' ICE TD ') but, at higher speeds, this proves costly and impractical. Therefore, almost all high speed trains are electric. The high power of electric locomotives also gives them
1089-467: A historical concern for double-stack rail transport regarding clearances with overhead lines but it is no longer universally true as of 2022 , with both Indian Railways and China Railway regularly operating electric double-stack cargo trains under overhead lines. Railway electrification has constantly increased in the past decades, and as of 2022, electrified tracks account for nearly one-third of total tracks globally. Railway electrification
1210-494: A noun, unlike English which has a separate article, the , to indicate the same. In general, almost all nouns in Bokmål follow these patterns (like the words in the examples above): In contrast, almost all nouns in Nynorsk follow these patterns (the noun gender system is more pronounced than in Bokmål): There is in general no way to infer what grammatical gender a specific noun has, but there are some patterns of nouns where
1331-524: A number of European countries, India, Saudi Arabia, eastern Japan, countries that used to be part of the Soviet Union, on high-speed lines in much of Western Europe (including countries that still run conventional railways under DC but not in countries using 16.7 Hz, see above). Most systems like this operate at 25 kV, although 12.5 kV sections exist in the United States, and 20 kV
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#17328511776931452-454: A power grid that is delivered to a locomotive, and within the locomotive, transformed and rectified to a lower DC voltage in preparation for use by traction motors. These motors may either be DC motors which directly use the DC or they may be three-phase AC motors which require further conversion of the DC to variable frequency three-phase AC (using power electronics). Thus both systems are faced with
1573-498: A relative lack of flexibility (since electric trains need third rails or overhead wires), and a vulnerability to power interruptions. Electro-diesel locomotives and electro-diesel multiple units mitigate these problems somewhat as they are capable of running on diesel power during an outage or on non-electrified routes. Different regions may use different supply voltages and frequencies, complicating through service and requiring greater complexity of locomotive power. There used to be
1694-481: A separate fourth rail for this purpose. In comparison to the principal alternative, the diesel engine , electric railways offer substantially better energy efficiency , lower emissions , and lower operating costs. Electric locomotives are also usually quieter, more powerful, and more responsive and reliable than diesel. They have no local emissions, an important advantage in tunnels and urban areas. Some electric traction systems provide regenerative braking that turns
1815-421: A single language, to be called Samnorsk . A 1946 poll showed that this policy was supported by 79% of Norwegians at the time. However, opponents of the official policy still managed to create a massive protest movement against Samnorsk in the 1950s, fighting in particular the use of "radical" forms in Bokmål text books in schools. In the reform in 1959, the 1938 reform was partially reversed in Bokmål, but Nynorsk
1936-428: A single vote. The name Nynorsk , the linguistic term for modern Norwegian , was chosen to contrast with Danish and emphasise the historical connection to Old Norwegian. Today, this meaning is often lost, and it is commonly mistaken as a "new" Norwegian in contrast to the "real" Norwegian Bokmål. Bokmål and Nynorsk were made closer by a reform in 1938. This was a result of a state policy to merge Nynorsk and Bokmål into
2057-565: A smaller population that a western route; supporters of the eastern route pointed out that with a western route Notodden would be closer to Drammen than Skien—a possible deteriorating effect on Telemark as a county. The western route would be 55 km, while the eastern routes would be 76 km via Gvarv and 94 via Lunde . The proposal for the Bratsberg Line was to incorporate the Tinnos Line, allowing seamless operations. The Norwegian State Railways (NSB) negotiated with Norsk Transport ,
2178-418: A third rail. The key advantage of the four-rail system is that neither running rail carries any current. This scheme was introduced because of the problems of return currents, intended to be carried by the earthed (grounded) running rail, flowing through the iron tunnel linings instead. This can cause electrolytic damage and even arcing if the tunnel segments are not electrically bonded together. The problem
2299-547: Is single track and features Norway's tallest railway bridge, Hjukse Bridge at 65 metres (213 ft). It is owned by the Norwegian National Rail Administration Vy operates three Class 69 ] EMUs between Notodden and Porsgrunn each hour. The need for a railway line from Notodden to Skien was driven forward by two key circumstances; the need for a railway to replace the Telemark Canal , and
2420-413: Is Bokmål will study Nynorsk as a mandatory subject throughout both elementary and high school. A 2005 poll indicates that 86.3% use primarily Bokmål as their daily written language, 5.5% use both Bokmål and Nynorsk, and 7.5% use primarily Nynorsk. Thus, 13% are frequently writing Nynorsk, though the majority speak dialects that resemble Nynorsk more closely than Bokmål. Broadly speaking, Nynorsk writing
2541-411: Is a language form based on Norwegian dialects and puristic opposition to Danish. The now-abandoned official policy to merge Bokmål and Nynorsk into one common language called Samnorsk through a series of spelling reforms has created a wide spectrum of varieties of both Bokmål and Nynorsk. The unofficial form known as Riksmål is considered more conservative than Bokmål and is far closer to Danish while
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#17328511776932662-411: Is derived by using resistors which ensures that stray earth currents are kept to manageable levels. Power-only rails can be mounted on strongly insulating ceramic chairs to minimise current leak, but this is not possible for running rails, which have to be seated on stronger metal chairs to carry the weight of trains. However, elastomeric rubber pads placed between the rails and chairs can now solve part of
2783-451: Is effected by one contact shoe each that slide on top of each one of the running rails . This and all other rubber-tyred metros that have a 1,435 mm ( 4 ft 8 + 1 ⁄ 2 in ) standard gauge track between the roll ways operate in the same manner. Railways and electrical utilities use AC as opposed to DC for the same reason: to use transformers , which require AC, to produce higher voltages. The higher
2904-526: Is electrified, companies often find that they need to continue use of diesel trains even if sections are electrified. The increasing demand for container traffic, which is more efficient when utilizing the double-stack car , also has network effect issues with existing electrifications due to insufficient clearance of overhead electrical lines for these trains, but electrification can be built or modified to have sufficient clearance, at additional cost. A problem specifically related to electrified lines are gaps in
3025-486: Is limited and losses are significantly higher. However, the higher voltages used in many AC electrification systems reduce transmission losses over longer distances, allowing for fewer substations or more powerful locomotives to be used. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for. Standard AC electrification systems use much higher voltages than standard DC systems. One of
3146-755: Is no longer exactly one-third of the grid frequency. This solved overheating problems with the rotary converters used to generate some of this power from the grid supply. In the US , the New York, New Haven, and Hartford Railroad , the Pennsylvania Railroad and the Philadelphia and Reading Railway adopted 11 kV 25 Hz single-phase AC. Parts of the original electrified network still operate at 25 Hz, with voltage boosted to 12 kV, while others were converted to 12.5 or 25 kV 60 Hz. In
3267-597: Is regulated by the Norwegian Academy , which determines acceptable spelling, grammar, and vocabulary. There is also an unofficial form of Nynorsk, called Høgnorsk , discarding the post-1917 reforms, and thus close to Ivar Aasen's original Landsmål. It is supported by Ivar Aasen-sambandet , but has found no widespread use. In 2010, 86.5% of the pupils in the primary and lower secondary schools in Norway receive education in Bokmål, while 13.0% receive education in Nynorsk. From
3388-447: Is sufficient traffic, the reduced track and especially the lower engine maintenance and running costs exceed the costs of this maintenance significantly. Newly electrified lines often show a "sparks effect", whereby electrification in passenger rail systems leads to significant jumps in patronage / revenue. The reasons may include electric trains being seen as more modern and attractive to ride, faster, quieter and smoother service, and
3509-410: Is that the power-wasting resistors used in DC locomotives for speed control were not needed in an AC locomotive: multiple taps on the transformer can supply a range of voltages. Separate low-voltage transformer windings supply lighting and the motors driving auxiliary machinery. More recently, the development of very high power semiconductors has caused the classic DC motor to be largely replaced with
3630-850: Is the countrywide system. 3 kV DC is used in Belgium, Italy, Spain, Poland, Slovakia, Slovenia, South Africa, Chile, the northern portion of the Czech Republic, the former republics of the Soviet Union , and in the Netherlands on a few kilometers between Maastricht and Belgium. It was formerly used by the Milwaukee Road from Harlowton, Montana , to Seattle, across the Continental Divide and including extensive branch and loop lines in Montana, and by
3751-565: Is the development of powering trains and locomotives using electricity instead of diesel or steam power . The history of railway electrification dates back to the late 19th century when the first electric tramways were introduced in cities like Berlin , London , and New York City . In 1881, the first permanent railway electrification in the world was the Gross-Lichterfelde Tramway in Berlin , Germany. Overhead line electrification
Bratsberg Line - Misplaced Pages Continue
3872-459: Is to write in dialect for informal use. When writing an SMS, Facebook update, or fridge note, many people, especially young ones, write approximations of the way they talk rather than using Bokmål or Nynorsk. There is general agreement that a wide range of differences makes it difficult to estimate the number of different Norwegian dialects. Variations in grammar, syntax, vocabulary, and pronunciation cut across geographical boundaries and can create
3993-583: Is today to a large extent the same language as Bokmål though somewhat closer to the Danish language. It is regulated by the unofficial Norwegian Academy , which translates the name as 'Standard Norwegian'. The other is Høgnorsk ('High Norwegian'), a more purist form of Nynorsk, which maintains the language in an original form as given by Ivar Aasen and rejects most of the reforms from the 20th century; this form has limited use. Nynorsk and Bokmål provide standards for how to write Norwegian, but not for how to speak
4114-420: Is typically generated in large and relatively efficient generating stations , transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines , but most purchase power from an electric utility . The railway usually provides its own distribution lines, switches, and transformers . Power is supplied to moving trains with
4235-834: Is used on some narrow-gauge lines in Japan. On "French system" HSLs, the overhead line and a "sleeper" feeder line each carry 25 kV in relation to the rails, but in opposite phase so they are at 50 kV from each other; autotransformers equalize the tension at regular intervals. Various railway electrification systems in the late nineteenth and twentieth centuries utilised three-phase , rather than single-phase electric power delivery due to ease of design of both power supply and locomotives. These systems could either use standard network frequency and three power cables, or reduced frequency, which allowed for return-phase line to be third rail, rather than an additional overhead wire. The majority of modern electrification systems take AC energy from
4356-405: Is uvular [ ʁ ] or [ χ ] . And in the dialects of North-Western Norway, it is realized as [ r ] , much like the trilled ⟨rr⟩ of Spanish. Norwegian is a pitch-accent language with two distinct pitch patterns, like Swedish. They are used to differentiate two-syllable words with otherwise identical pronunciation. For example, in many East Norwegian dialects,
4477-490: Is widespread in western Norway, though not in major urban areas, and also in the upper parts of mountain valleys in the southern and eastern parts of Norway. Examples are Setesdal , the western part of Telemark county ( fylke ) and several municipalities in Hallingdal , Valdres , and Gudbrandsdalen . It is little used elsewhere, but 30–40 years ago, it also had strongholds in many rural parts of Trøndelag (mid-Norway) and
4598-459: The Dano-Norwegian language that replaced Middle Norwegian as the elite language after the union of Denmark–Norway in the 16th and 17th centuries and then evolved in Norway, while Nynorsk was developed based upon a collective of spoken Norwegian dialects. Norwegian is one of the two official languages in Norway, along with Sámi , a Finno-Ugric language spoken by less than one percent of
4719-638: The Delaware, Lackawanna and Western Railroad (now New Jersey Transit , converted to 25 kV AC) in the United States, and the Kolkata suburban railway (Bardhaman Main Line) in India, before it was converted to 25 kV 50 Hz. DC voltages between 600 V and 750 V are used by most tramways and trolleybus networks, as well as some metro systems as the traction motors accept this voltage without
4840-568: The Germanic languages evolved, further branching off into the North Germanic languages , of which Norwegian is one. Proto-Norse is thought to have evolved as a northern dialect of Proto-Germanic during the first centuries AD in what is today Southern Sweden. It is the earliest stage of a characteristically North Germanic language, and the language attested in the Elder Futhark inscriptions,
4961-683: The HSL-Zuid and Betuwelijn , and 3,000 V south of Maastricht . In Portugal, it is used in the Cascais Line and in Denmark on the suburban S-train system (1650 V DC). In the United Kingdom, 1,500 V DC was used in 1954 for the Woodhead trans-Pennine route (now closed); the system used regenerative braking , allowing for transfer of energy between climbing and descending trains on
Bratsberg Line - Misplaced Pages Continue
5082-614: The Hanseatic League between 1250 and 1450 in the main Scandinavian cities brought large Middle Low German –speaking populations to Norway. The influence of their language on Scandinavian is comparable with that of French on English after the Norman conquest . In the late Middle Ages, dialects began to develop in Scandinavia because the population was rural and little travel occurred. When
5203-674: The Innovia ART system. While part of the SkyTrain network, the Canada Line does not use this system and instead uses more traditional motors attached to the wheels and third-rail electrification. A few lines of the Paris Métro in France operate on a four-rail power system. The trains move on rubber tyres which roll on a pair of narrow roll ways made of steel and, in some places, of concrete . Since
5324-550: The Reformation came from Germany, Martin Luther 's High German translation of the Bible was quickly translated into Swedish, Danish, and Icelandic. Norway entered a union with Denmark in 1397 and Danish, over time, replaced Middle Norwegian as the language of the elite, the church, literature, and the law. When the union with Denmark ended in 1814, the Dano-Norwegian koiné had become
5445-616: The Southern Railway serving Coulsdon North and Sutton railway station . The lines were electrified at 6.7 kV 25 Hz. It was announced in 1926 that all lines were to be converted to DC third rail and the last overhead-powered electric service ran in September 1929. AC power is used at 60 Hz in North America (excluding the aforementioned 25 Hz network), western Japan, South Korea and Taiwan; and at 50 Hz in
5566-454: The United States , the New York, New Haven and Hartford Railroad was one of the first major railways to be electrified. Railway electrification continued to expand throughout the 20th century, with technological improvements and the development of high-speed trains and commuters . Today, many countries have extensive electrified railway networks with 375 000 km of standard lines in
5687-466: The standard gauge track was extended to Eidanger; a critical point because it would become the transshipment point from narrow- to standard gauge. Regular traffic started 4 December 1916, but the official opening was not until 17 December 1917, with another official opening occurring on 9 February 1920 along with sections of the Sørland Line. The branch Brevik Line was completed on 16 June 1921, while
5808-428: The 1930s- and 40s until an agreement was reached in 1952 as to the value of each party in the line. On 1 July 1953 NSB bought Norsk Hydro's ownership in the line; the company remained a limited company until April 1956. A new agreement for transport fees was reached, giving Norsk Hydro a quantity discount, but falling production at Rjukan made it impossible for Norsk Hydro to take advantage of the potential discount. From
5929-411: The 1960s the production at Rjukan decreased steadily, and the plant was finally closed on 1 July 1991; the last freight train was run four days later. Passenger transport from Porsgrunn to Tinnoset was terminated at the end of 1990, with 260 passengers taking the final train. Trains continued to operate to Notodden; except from October 2000 to August 2001. On 25 August 2004 the northern terminus at Notodden
6050-475: The 20th century, being used by large newspapers, encyclopedias, and a significant proportion of the population of the capital Oslo, surrounding areas, and other urban areas, as well as much of the literary tradition. Since the reforms of 1981 and 2003 (effective in 2005), the official Bokmål can be adapted to be almost identical with modern Riksmål. The differences between written Riksmål and Bokmål are comparable to American and British English differences . Riksmål
6171-502: The Ministry of Culture, official spelling, grammar, and vocabulary for the Norwegian language. The board's work has been subject to considerable controversy throughout the years. Both Nynorsk and Bokmål have a great variety of optional forms. The Bokmål that uses the forms that are close to Riksmål is called moderate or conservative , depending on one's viewpoint, while the Bokmål that uses
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#17328511776936292-684: The Netherlands, New Zealand ( Wellington ), Singapore (on the North East MRT line ), the United States ( Chicago area on the Metra Electric district and the South Shore Line interurban line and Link light rail in Seattle , Washington). In Slovakia, there are two narrow-gauge lines in the High Tatras (one a cog railway ). In the Netherlands it is used on the main system, alongside 25 kV on
6413-471: The Norsk Hydro subsidiary that operated the railways, and on 31 May 1913 they reached an agreement to create a company that would build the new railway and take over ownership of the Tinnos Line. Total equity would be NOK 16.5 million, where NSB would finance the whole new line while Norsk Transport would receive stocks of NOK 5.4 million—half in preferred shares and half in common shares—for the incorporation of
6534-418: The Tinnos Line and NOK 4.2 million was for the state financed part of the Sørland Line from Notodden to Nordagutu. Private investors would be allowed to sign shares for 5.9 million in preferred shares. As a result, NSB would have to guarantee a dividend of five percent to the private owners. In parliament this was seen as a pure gift to foreign capital interests; the state would with the agreement have to insure
6655-720: The UK, the London, Brighton and South Coast Railway pioneered overhead electrification of its suburban lines in London, London Bridge to Victoria being opened to traffic on 1 December 1909. Victoria to Crystal Palace via Balham and West Norwood opened in May 1911. Peckham Rye to West Norwood opened in June 1912. Further extensions were not made owing to the First World War. Two lines opened in 1925 under
6776-494: The ability to pull freight at higher speed over gradients; in mixed traffic conditions this increases capacity when the time between trains can be decreased. The higher power of electric locomotives and an electrification can also be a cheaper alternative to a new and less steep railway if train weights are to be increased on a system. On the other hand, electrification may not be suitable for lines with low frequency of traffic, because lower running cost of trains may be outweighed by
6897-516: The advantages of raising the voltage is that, to transmit certain level of power, lower current is necessary ( P = V × I ). Lowering the current reduces the ohmic losses and allows for less bulky, lighter overhead line equipment and more spacing between traction substations, while maintaining power capacity of the system. On the other hand, the higher voltage requires larger isolation gaps, requiring some elements of infrastructure to be larger. The standard-frequency AC system may introduce imbalance to
7018-517: The branch line to Herøya was not completed until 1952. Operation of the line was the responsibility of NSB, while the ownership remained in Øst-Telemark Jernbaneaktieselskap; Norsk Hydro was forced to provide a five percent dividend to NSB—money that was put into a fund to purchase Norsk Hydro's ownership at a later time. Norsk Transport retained ownership of the Rjukan Line and operated the railway ferries. The passenger and general cargo transport on
7139-525: The canal instead of building a railway—to allow ocean-going vessels to enter the port at Notodden and removing the need for transshipment in Skien. Plans were launched by Sigurd Kloumann in 1911, but rejected by the management of Norsk Hydro who preferred a continual railway line. The Sørland Line (at the time called the Vestland Line) was intended to follow an inland route, and have several branch lines out to
7260-636: The construction of the Sørlandet Line. From the opening in 1909 Rjukan Salpeterfrabrik had transported their ammonia for shipment from Skien along the Rjukan Line , the Tinnsjø railway ferry and the Tinnos Line to Notodden, where the ammonia was transferred from railway wagons to barges and shipped down 54 kilometres (34 mi) along the Telemark Canal to Skien. At the time many locals wanted to expand
7381-399: The dialects and comparing the dialects among the different regions. He examined the development of Icelandic , which had largely escaped the influences under which Norwegian had come. He called his work, which was published in several books from 1848 to 1873, Landsmål , meaning 'national language'. The name Landsmål is sometimes interpreted as 'rural language' or 'country language', but this
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#17328511776937502-577: The dialects. The retroflex consonants only appear in East Norwegian dialects as a result of sandhi , combining / ɾ / with / d / , / l / , / n / , / s / , and / t / . The realization of the rhotic / ɾ / depends on the dialect. In Eastern, Central, and Northern Norwegian dialects, it is a flap [ ɾ ] , whereas in Western and Southern Norway, and for some speakers also in Eastern Norway, it
7623-410: The distance they could transmit power. However, in the early 20th century, alternating current (AC) power systems were developed, which allowed for more efficient power transmission over longer distances. In the 1920s and 1930s, many countries worldwide began to electrify their railways. In Europe, Switzerland , Sweden , France , and Italy were among the early adopters of railway electrification. In
7744-644: The eighth grade onwards, pupils are required to learn both. Out of the 431 municipalities in Norway, 161 have declared that they wish to communicate with the central authorities in Bokmål, 116 (representing 12% of the population) in Nynorsk, while 156 are neutral. Of 4,549 state publications in 2000, 8% were in Nynorsk, and 92% in Bokmål. The large national newspapers ( Aftenposten , Dagbladet , and VG ) are published in Bokmål or Riksmål. Some major regional newspapers (including Bergens Tidende and Stavanger Aftenblad ), many political journals, and many local newspapers use both Bokmål and Nynorsk. A newer trend
7865-448: The electrification. Electric vehicles, especially locomotives, lose power when traversing gaps in the supply, such as phase change gaps in overhead systems, and gaps over points in third rail systems. These become a nuisance if the locomotive stops with its collector on a dead gap, in which case there is no power to restart. This is less of a problem in trains consisting of two or more multiple units coupled together, since in that case if
7986-404: The end of funding. Most electrification systems use overhead wires, but third rail is an option up to 1,500 V. Third rail systems almost exclusively use DC distribution. The use of AC is usually not feasible due to the dimensions of a third rail being physically very large compared with the skin depth that AC penetrates to 0.3 millimetres or 0.012 inches in a steel rail. This effect makes
8107-571: The experiment was curtailed. In 1970 the Ural Electromechanical Institute of Railway Engineers carried out calculations for railway electrification at 12 kV DC , showing that the equivalent loss levels for a 25 kV AC system could be achieved with DC voltage between 11 and 16 kV. In the 1980s and 1990s 12 kV DC was being tested on the October Railway near Leningrad (now Petersburg ). The experiments ended in 1995 due to
8228-500: The fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification). Whatever the causes of the sparks effect, it is well established for numerous routes that have electrified over decades. This also applies when bus routes with diesel buses are replaced by trolleybuses. The overhead wires make
8349-405: The final cost to NOK 21.9 million. The line was built with electric traction —just like the Tinnos Line and the Rjukan Line. In Skien a controversy concerning the location of the new station arose; many locals claimed the station was too far out of the city and the stating was moved back to the old location in 1927. Porsgrunn patriots were hoping that the city would become the terminus, but instead
8470-403: The final syllable of an accentual phrase, while the utterance-final fall common in most languages is either very small or absent. There are significant variations in pitch accent between dialects. Thus, in most of western and northern Norway (the so-called high-pitch dialects) accent 1 is falling, while accent 2 is rising in the first syllable and falling in the second syllable or somewhere around
8591-496: The forms that are close to Nynorsk is called radical . Nynorsk has forms that are close to the original Landsmål and forms that are close to Bokmål. Opponents of the spelling reforms aimed at bringing Bokmål closer to Nynorsk have retained the name Riksmål and employ spelling and grammar that predate the Samnorsk movement. Riksmål and conservative versions of Bokmål have been the de facto standard written language of Norway for most of
8712-613: The gender can be inferred. For instance, all nouns ending in - nad will be masculine in both Bokmål and Nynorsk (for instance the noun jobbsøknad , which means 'job application'). Most nouns ending in - ing will be feminine, like the noun forventning ('expectation'). Railway electrification system Railway electrification is the use of electric power for the propulsion of rail transport . Electric railways use either electric locomotives (hauling passengers or freight in separate cars), electric multiple units ( passenger cars with their own motors) or both. Electricity
8833-1012: The general power grid. This is especially useful in mountainous areas where heavily loaded trains must descend long grades. Central station electricity can often be generated with higher efficiency than a mobile engine/generator. While the efficiency of power plant generation and diesel locomotive generation are roughly the same in the nominal regime, diesel motors decrease in efficiency in non-nominal regimes at low power while if an electric power plant needs to generate less power it will shut down its least efficient generators, thereby increasing efficiency. The electric train can save energy (as compared to diesel) by regenerative braking and by not needing to consume energy by idling as diesel locomotives do when stopped or coasting. However, electric rolling stock may run cooling blowers when stopped or coasting, thus consuming energy. Large fossil fuel power stations operate at high efficiency, and can be used for district heating or to produce district cooling , leading to
8954-411: The high cost of the electrification infrastructure. Therefore, most long-distance lines in developing or sparsely populated countries are not electrified due to relatively low frequency of trains. Network effects are a large factor with electrification. When converting lines to electric, the connections with other lines must be considered. Some electrifications have subsequently been removed because of
9075-555: The language. No standard of spoken Norwegian is officially sanctioned, and most Norwegians speak their own dialects in all circumstances. Thus, unlike in many other countries, the use of any Norwegian dialect, whether it coincides with the written norms or not, is accepted as correct spoken Norwegian. However, in areas where East Norwegian dialects are used, a tendency exists to accept a de facto spoken standard for this particular regional dialect, Urban East Norwegian or Standard East Norwegian (Norwegian: Standard østnorsk ), in which
9196-484: The line was not profitable, and Norsk Hydro had to subsidize this through higher fees on their freight. For NSB it was a profitable venture, as one of three lines to make profits in 1932. During the 1920s the two companies brought their disagreements to court; on 7 April 1923 the Supreme Court ruled in favor of NSB, and Norsk Hydro had to continue subsidizing operations. In the period 1920–35, 6.1 million tonnes of cargo
9317-625: The local population. Around 1030, Christianity came to Scandinavia , bringing with it an influx of Latin borrowings and the Roman alphabet . These new words were related to church practices and ceremonies, although many other loanwords related to general culture also entered the language. The Scandinavian languages at this time are not considered to be separate languages, although there were minor differences among what are customarily called Old Icelandic, Old Norwegian , Old Gutnish , Old Danish, and Old Swedish . The economic and political dominance of
9438-492: The losses (saving 2 GWh per year per 100 route-km; equalling about €150,000 p.a.). The line chosen is one of the lines, totalling 6000 km, that are in need of renewal. In the 1960s the Soviets experimented with boosting the overhead voltage from 3 to 6 kV. DC rolling stock was equipped with ignitron -based converters to lower the supply voltage to 3 kV. The converters turned out to be unreliable and
9559-422: The maximum power that can be transmitted, also can be responsible for electrochemical corrosion due to stray DC currents. Electric trains need not carry the weight of prime movers , transmission and fuel. This is partly offset by the weight of electrical equipment. Regenerative braking returns power to the electrification system so that it may be used elsewhere, by other trains on the same system or returned to
9680-547: The most important cities—including Skien and Notodden. At Skien Bratsbergbanen would connect to the Vestfold Line that continues to Porsgrunn and through Vestfold back to Drammen . The Bratsberg Line would run as part of the Sørland Line between Hjuksebø to Nordagutu , branching off at those two stations. There were two proposed routes, running on each side of the lake Norsjø . An eastern solution would be shorter and provide easier transport for Norsk Hydro, but would serve
9801-479: The mother tongue of around 1% of the population. From the 1840s, some writers experimented with a Norwegianised Danish by incorporating words that were descriptive of Norwegian scenery and folk life, and adopting a more Norwegian syntax. Knud Knudsen proposed to change spelling and inflection in accordance with the Dano-Norwegian koiné , known as "cultivated everyday speech." A small adjustment in this direction
9922-402: The need for overhead wires between those stations. Maintenance costs of the lines may be increased by electrification, but many systems claim lower costs due to reduced wear-and-tear on the track from lighter rolling stock. There are some additional maintenance costs associated with the electrical equipment around the track, such as power sub-stations and the catenary wire itself, but, if there
10043-417: The oldest form of the runic alphabets . A number of inscriptions are memorials to the dead, while others are magical in content. The oldest are carved on loose objects, while later ones are chiseled in runestones . They are the oldest written record of any Germanic language. East Germanic languages West Germanic languages Icelandic Faroese Norwegian Danish Swedish Around 800 AD,
10164-497: The phase separation between the electrified sections powered from different phases, whereas high voltage would make the transmission more efficient. UIC conducted a case study for the conversion of the Bordeaux-Hendaye railway line (France), currently electrified at 1.5 kV DC, to 9 kV DC and found that the conversion would allow to use less bulky overhead wires (saving €20 million per 100 route-km) and lower
10285-784: The population. Norwegian is one of the working languages of the Nordic Council . Under the Nordic Language Convention , citizens of the Nordic countries who speak Norwegian have the opportunity to use it when interacting with official bodies in other Nordic countries without being liable for any interpretation or translation costs. Like most of the languages in Europe, Norwegian derives from Proto-Indo-European . As early Indo-Europeans spread across Europe, they became isolated from each other and new languages developed. In northwest Europe,
10406-442: The principles of Norwegian orthography, e.g. zebra in Norwegian is written sebra . Due to historical reasons, some otherwise Norwegian family names are also written using these letters. Some letters may be modified by diacritics : é , è , ê , ó , ò , and ô . In Nynorsk, ì and ù and ỳ are occasionally seen as well. The diacritics are not compulsory, but may in a few cases distinguish between different meanings of
10527-500: The problem by insulating the running rails from the current return should there be a leakage through the running rails. The Expo and Millennium Line of the Vancouver SkyTrain use side-contact fourth-rail systems for their 650 V DC supply. Both are located to the side of the train, as the space between the running rails is occupied by an aluminum plate, as part of stator of the linear induction propulsion system used on
10648-399: The profits of the company to foreign investors, and a short section of the Sørland Line would be privately owned. Parliament instead suggested that NSB be given the preferred shares, and all new equity be signed by the state; now Norsk Transport would have to guarantee for the profits for the state. Budget exceeding would be covered by new shares sold to the state, and the company would build up
10769-460: The resistance per unit length unacceptably high compared with the use of DC. Third rail is more compact than overhead wires and can be used in smaller-diameter tunnels, an important factor for subway systems. The London Underground in England is one of few networks that uses a four-rail system. The additional rail carries the electrical return that, on third-rail and overhead networks, is provided by
10890-570: The revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas; some electric locomotives can switch to different supply voltages to allow flexibility in operation. Six of the most commonly used voltages have been selected for European and international standardisation. Some of these are independent of the contact system used, so that, for example, 750 V DC may be used with either third rail or overhead lines. There are many other voltage systems used for railway electrification systems around
11011-490: The running rails. On the London Underground, a top-contact third rail is beside the track, energized at +420 V DC , and a top-contact fourth rail is located centrally between the running rails at −210 V DC , which combine to provide a traction voltage of 630 V DC . The same system was used for Milan 's earliest underground line, Milan Metro 's line 1 , whose more recent lines use an overhead catenary or
11132-464: The same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. The difference between AC and DC electrification systems lies in where the AC is converted to DC: at the substation or on the train. Energy efficiency and infrastructure costs determine which of these is used on a network, although this is often fixed due to pre-existing electrification systems. Both
11253-719: The script was simplified to the Younger Futhark , and inscriptions became more abundant. At the same time, the beginning of the Viking Age led to the spread of Old Norse to Iceland , Greenland , and the Faroe Islands . Viking colonies also existed in parts of the British Isles , France ( Normandy ), North America, and Kievan Rus . In all of these places except Iceland and the Faroes, Old Norse speakers went extinct or were absorbed into
11374-606: The southern part of northern Norway ( Nordland county). Today, Nynorsk is the official language of not only four of the nineteen Norwegian counties but also various municipalities in five other counties. NRK , the Norwegian broadcasting corporation, broadcasts in both Bokmål and Nynorsk, and all governmental agencies are required to support both written languages. Bokmål is used in 92% of all written publications, and Nynorsk in 8% (2000). Like some other European countries, Norway has an official "advisory board"— Språkrådet (Norwegian Language Council)— that determines, after approval from
11495-555: The steep approaches to the tunnel. The system was also used for suburban electrification in East London and Manchester , now converted to 25 kV AC. It is now only used for the Tyne and Wear Metro . In India, 1,500 V DC was the first electrification system launched in 1925 in Mumbai area. Between 2012 and 2016, the electrification was converted to 25 kV 50 Hz, which
11616-443: The supply grid, requiring careful planning and design (as at each substation power is drawn from two out of three phases). The low-frequency AC system may be powered by separate generation and distribution network or a network of converter substations, adding the expense, also low-frequency transformers, used both at the substations and on the rolling stock, are particularly bulky and heavy. The DC system, apart from being limited as to
11737-605: The syllable boundary. The pitch accents (as well as the peculiar phrase accent in the low-tone dialects) give the Norwegian language a "singing" quality that makes it easy to distinguish from other languages. Accent 1 generally occurs in words that were monosyllabic in Old Norse , and accent 2 in words that were polysyllabic. The Norwegian alphabet has 29 letters. The letters c , q , w , x and z are only used in loanwords . As loanwords are assimilated into Norwegian, their spelling might change to reflect Norwegian pronunciation and
11858-401: The three grammatical genders from Old Norse to some extent. The only exceptions are the dialect of Bergen and a few upper class sociolects at the west end of Oslo that have completely lost the feminine gender. According to Marit Westergaard , approximately 80% of nouns in Norwegian are masculine. Norwegian and other Scandinavian languages use a suffix to indicate definiteness of
11979-694: The three-phase induction motor fed by a variable frequency drive , a special inverter that varies both frequency and voltage to control motor speed. These drives can run equally well on DC or AC of any frequency, and many modern electric locomotives are designed to handle different supply voltages and frequencies to simplify cross-border operation. Five European countries – Germany, Austria, Switzerland, Norway and Sweden – have standardized on 15 kV 16 + 2 ⁄ 3 Hz (the 50 Hz mains frequency divided by three) single-phase AC. On 16 October 1995, Germany, Austria and Switzerland changed from 16 + 2 ⁄ 3 Hz to 16.7 Hz which
12100-575: The through traffic to non-electrified lines. If through traffic is to have any benefit, time-consuming engine switches must occur to make such connections or expensive dual mode engines must be used. This is mostly an issue for long-distance trips, but many lines come to be dominated by through traffic from long-haul freight trains (usually running coal, ore, or containers to or from ports). In theory, these trains could enjoy dramatic savings through electrification, but it can be too costly to extend electrification to isolated areas, and unless an entire network
12221-466: The train stops with one collector in a dead gap, another multiple unit can push or pull the disconnected unit until it can again draw power. The same applies to the kind of push-pull trains which have a locomotive at each end. Power gaps can be overcome in single-collector trains by on-board batteries or motor-flywheel-generator systems. In 2014, progress is being made in the use of large capacitors to power electric vehicles between stations, and so avoid
12342-713: The train's kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid. While diesel locomotives burn petroleum products, electricity can be generated from diverse sources, including renewable energy . Historically, concerns of resource independence have played a role in the decision to electrify railway lines. The landlocked Swiss confederation which almost completely lacks oil or coal deposits but has plentiful hydropower electrified its network in part in reaction to supply issues during both World Wars. Disadvantages of electric traction include: high capital costs that may be uneconomic on lightly trafficked routes,
12463-413: The transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space
12584-475: The two Germanic languages with the greatest numbers of speakers, English and German, have close similarities with Norwegian, neither is mutually intelligible with it. Norwegian is a descendant of Old Norse , the common language of the Germanic peoples living in Scandinavia during the Viking Age . Today there are two official forms of written Norwegian, Bokmål (Riksmål) and Nynorsk (Landsmål), each with its own variants. Bokmål developed from
12705-470: The tyres do not conduct the return current, the two guide bars provided outside the running ' roll ways ' become, in a sense, a third and fourth rail which each provide 750 V DC , so at least electrically it is a four-rail system. Each wheel set of a powered bogie carries one traction motor . A side sliding (side running) contact shoe picks up the current from the vertical face of each guide bar. The return of each traction motor, as well as each wagon ,
12826-426: The unofficial Høgnorsk is more conservative than Nynorsk and is far closer to Faroese , Icelandic and Old Norse . Norwegians are educated in both Bokmål and Nynorsk. Each student gets assigned a native form based on which school they go to, whence the other form (known as Sidemål ) will be a mandatory school subject from elementary school through high school. For instance, a Norwegian whose main language form
12947-447: The vocabulary coincides with Bokmål. Outside Eastern Norway , this spoken variation is not used. From the 16th to the 19th centuries, Danish was the standard written language of Norway. As a result, the development of modern written Norwegian has been subject to strong controversy related to nationalism , rural versus urban discourse, and Norway's literary history. Historically, Bokmål is a Norwegianised variety of Danish, while Nynorsk
13068-432: The voltage, the lower the current for the same power (because power is current multiplied by voltage), and power loss is proportional to the current squared. The lower current reduces line loss, thus allowing higher power to be delivered. As alternating current is used with high voltages. Inside the locomotive, a transformer steps the voltage down for use by the traction motors and auxiliary loads. An early advantage of AC
13189-405: The weight of an on-board transformer. Increasing availability of high-voltage semiconductors may allow the use of higher and more efficient DC voltages that heretofore have only been practical with AC. The use of medium-voltage DC electrification (MVDC) would solve some of the issues associated with standard-frequency AC electrification systems, especially possible supply grid load imbalance and
13310-427: The word bønder ('farmers') is pronounced using the simpler tone 1, while bønner ('beans' or 'prayers') uses the more complex tone 2. Though spelling differences occasionally differentiate written words, in most cases the minimal pairs are written alike, since written Norwegian has no explicit accent marks. In most eastern low-tone dialects, accent 1 uses a low flat pitch in the first syllable, while accent 2 uses
13431-560: The word, e.g.: for ('for/to'), fór ('went'), fòr ('furrow') and fôr ('fodder'). Loanwords may be spelled with other diacritics, most notably ï, ü , á and à . The two legally recognized forms of written Norwegian are Bokmål (literally 'book tongue') and Nynorsk ('new Norwegian'), which are regulated by the Language Council of Norway ( Språkrådet ). Two other written forms without official status also exist. One, called Riksmål ('national language'),
13552-532: The world, and the list of railway electrification systems covers both standard voltage and non-standard voltage systems. The permissible range of voltages allowed for the standardised voltages is as stated in standards BS EN 50163 and IEC 60850. These take into account the number of trains drawing current and their distance from the substation. 1,500 V DC is used in Japan, Indonesia, Hong Kong (parts), Ireland, Australia (parts), France (also using 25 kV 50 Hz AC ) ,
13673-527: The world, including China , India , Japan , France , Germany , and the United Kingdom . Electrification is seen as a more sustainable and environmentally friendly alternative to diesel or steam power and is an important part of many countries' transportation infrastructure. Electrification systems are classified by three main parameters: Selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to
13794-451: Was changed further towards Bokmål. Since then Bokmål has reverted even further toward traditional Riksmål, while Nynorsk still adheres to the 1959 standard. Therefore, a small minority of Nynorsk enthusiasts use a more conservative standard called Høgnorsk . The Samnorsk policy had little influence after 1960, and was officially abandoned in 2002. While the sound systems of Norwegian and Swedish are similar, considerable variation exists among
13915-480: Was clearly not Aasen's intended meaning. The name of the Danish language in Norway was a topic of hot dispute throughout the 19th century. Its proponents claimed that it was a language common to Norway and Denmark, and no more Danish than Norwegian. The proponents of Landsmål thought that the Danish character of the language should not be concealed. In 1899, Bjørnstjerne Bjørnson proposed the neutral name Riksmål , meaning 'national language' like Landsmål , and this
14036-437: Was exacerbated because the return current also had a tendency to flow through nearby iron pipes forming the water and gas mains. Some of these, particularly Victorian mains that predated London's underground railways, were not constructed to carry currents and had no adequate electrical bonding between pipe segments. The four-rail system solves the problem. Although the supply has an artificially created earth point, this connection
14157-543: Was first applied successfully by Frank Sprague in Richmond, Virginia in 1887-1888, and led to the electrification of hundreds of additional street railway systems by the early 1890s. The first electrification of a mainline railway was the Baltimore and Ohio Railroad's Baltimore Belt Line in the United States in 1895–96. The early electrification of railways used direct current (DC) power systems, which were limited in terms of
14278-453: Was implemented in the first official reform of the Danish language in Norway in 1862 and more extensively after his death in two official reforms in 1907 and 1917. Meanwhile, a nationalistic movement strove for the development of a new written Norwegian. Ivar Aasen , a botanist and self-taught linguist, began his work to create a new Norwegian language at the age of 22. He traveled around the country collecting words and examples of grammar from
14399-573: Was moved by 800 m to a more central location; the extension is now electrified and reopened on 14 December 2020. [REDACTED] Media related to Bratsbergbanen at Wikimedia Commons Norwegian language Norwegian ( endonym : norsk [ˈnɔʂːk] ) is a North Germanic language from the Indo-European language family spoken mainly in Norway , where it is an official language. Along with Swedish and Danish , Norwegian forms
14520-641: Was officially adopted along with the 1907 spelling reform. The name Riksmål is sometimes interpreted as 'state language', but this meaning is secondary at best. (Compare to Danish rigsmål from where the name was borrowed.) After the personal union with Sweden was dissolved in 1905, both languages were developed further and reached what is now considered their classic forms after a reform in 1917. Riksmål was, in 1929, officially renamed Bokmål (literally 'book language'), and Landsmål to Nynorsk (literally 'new Norwegian'). A proposition to substitute Danish-Norwegian ( dansk-norsk ) for Bokmål lost in parliament by
14641-459: Was transported for Norsk Hydro. During the first half of the 1930s the price of potassium nitrate fell 60%, and in 1934 Norsk Hydro announced they would move production; to compensate the state agreed to in part subsidize the transport on the railway. Still, on 6 April 1934 the plant at Notodden was closed and moved to Herøya in Porsgrunn. The disagreement between Norsk Hydro and NSB continued through
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