View source for PKP class SM30

{{Short description|Polish diesel locomotive class}}
{{more citations needed|date=December 2014}}
{{Infobox locomotive
|name             = SM30
|powertype        = Diesel-electric
|image            = 14.09.95 Olsztyn SM30-044 (6483873111).jpg
|caption          = Class SM30 locomotives
|builder          = [[Fablok|Fablok Chrzanów]]
|serialnumber     = 
|buildmodel       = Ls300E
|builddate        = 1957–1970
|totalproduction  = 909
|whytetype        = 
|aarwheels        = 
|uicclass         = [[Bo′Bo′]]
|gauge            = {{track gauge|sg|allk=on}}
|bogies           = 
|wheeldiameter    = {{convert|850|mm|in|2|abbr=on}}
|wheelbase        =
|length           = {{convert|10140|mm|ftin|0|abbr=on}}
|width            = {{convert|3130|mm|ftin|0|abbr=on}}
|height           = {{convert|4300|mm|ftin|0|abbr=on}}
|locoweight       = {{convert|36|t|abbr=on}}
|fueltype         =
|fuelcap          = {{convert|1060|L|abbr=on}}
|primemover       = Wola V-300<br>Wola 2DVSa-350
|enginetype       = [[Four-stroke engine|Four-stroke]] [[diesel engine]]
|tractionmotors   = LT-31<br>LKAa-310
|aspiration       = 
|displacement     =
|cylindercount    = 12
|cylindersize     = 
|transmission     = 
|maxspeed         = {{convert|60|km/h|mph|0|abbr=on}}
|poweroutput      = {{convert|220|kW|hp|-1|abbr=on}}<br>{{convert|257|kW|hp|-1|abbr=on}} 
|tractiveeffort   = {{convert|73.55|kN|lbf|-1|abbr=on}}
|factorofadhesion =
|locobrakes       = [[Knorr-Bremse]]<br>[[Emergency brake (train)|hand brake]]
|trainbrakes      = 
|safety           = 
|operator         = [[Polish State Railways|PKP]]
|operatorclass    = SM30
|numinclass       = 302
|fleetnumbers     =
|officialname     =
|nicknames        = 
|locale           = 
|deliverydate     = 
|firstrundate     = 
|lastrundate      =
|retiredate       =
|restoredate      =
|scrapdate        =
|currentowner     =
|disposition      =
}}
'''SM30''' is a Polish series of [[diesel locomotive|diesel]] shunting locomotives used by [[Polish State Railways|PKP]] and industry, built by [[Fablok]], [[Chrzanów]] (factory designation '''Ls300E'''). They were also used for a local traffic.<ref name=pokr/>

==History==
SM30 locomotive is the first Polish diesel locomotive equipped with [[electrical transmission]]. A design was worked out by the Central Rolling Stock Industry Construction Bureau in Poznań. The [[prototype]] was constructed in [[Fablok]], [[Chrzanów]] in 1957. 909 items were built in 1957-1970, 302 of them found place in [[Polish State Railways|PKP]], the rest worked in the industry (with designations Ls300 or SM30).<ref name=pokr >{{in lang|pl}}Bogdan Pokropiński, ''Lokomotywy spalinowe produkcji polskiej'', WKiŁ, Warsaw, 2009, {{ISBN|978-83-206-1731-3}}, p. 69-72</ref> The locomotive was also known under its project designation 1D or early PKP designation Lwe55 (until 1960).<ref name=pokr />

In the 1970s, 109 items of SM30 locomotive were modified for [[Head end power|heating]] passenger wagons with 500 [[Volt|V]] electric heaters, and as a result their class designation was changed to '''[[PKP class SP30|SP30]]''' (able to pull passenger trains).<ref name=pokr/> Those machines remained in regular service until the late 1980s. In 2000 all of them were again, after dismounting heating systems, returned to SM30 series.<ref name=LKK >{{cite web
  |url=http://www.lkkteam.pl/readarticle.php?article_id=23| title=LKK Team| author=Marcin Mularczyk| date=2006–2007| accessdate=2007-09-03
  | url-status=dead| archiveurl=https://web.archive.org/web/20071018001927/http://lkkteam.pl/readarticle.php?article_id=23| archivedate=2007-10-18
}}</ref>

==Technical data==
SM30 is a [[Bo′Bo′]] locomotive, what means it runs on two [[bogie]]s, each equipped with two [[axle]]s. The general construction of this engine is relatively simple. Being the pioneer machine in the Polish [[railway]] industry, it incorporated many solutions from other branches of industry, i.e. the first engine to be mounted, Wola V-300, was taken from [[tank]] construction, main [[DC current]] [[Electric generator|generator]] <!-- A DC alternator is delightful nonsense --> was in fact stationery generator and [[traction motor]]s were taken from [[tram]]s. As the first Polish locomotive with [[diesel-electric transmission]] it proved the high efficiency of that solution and was quite successful.<ref name=pokr/>

The [[locomotive frame]] is constructed of [[steel]] rolled [[former]]s. Ball stub-axles are mounted to strend girders, that make [[welding|welded]] box construction. A power unit, composed of a [[diesel engine]] and main [[Electric generator|generator]], is mounted on parallel girders. The engine is connected to main generator with an elastic [[clutch]]. Four [[traction motor]]s (two on each bogie) are mounted with a tram system. Traction motors can be powered in [[series connection]], [[parallel connection]] and parallel connection with field reduction of 40 to 60%.

[[Traction motor]]s are series devices with {{convert|60|kW|abbr=on}} <!-- {{convert|60|kWh|MJ BTU|abbr=on|lk=on}} ? --> hour power. Main [[Electric generator|generator]] (PABOM-186a type) is a [[Direct current|DC]] machine with 600 [[voltage|V]] and 367 [[ampere|A]]. Its power rating whilst working with 1500 [[Revolutions per minute|rpm]]. is {{convert|220|kW|hp|-1|abbr=on}}. During engine starting the main generator serves as [[electric starter]], powered from the [[battery (electricity)|battery]]. For the purposes of lighting the locomotive and charging batteries an additional generator (Pw-114a type) is used.

SM30 locomotives had two types of diesel engine mounted. Wola V-300 and 2DVSa-350 (from 1962) 12-cylinder engines had powers, respectively: {{convert|300|and|350|Hp|abbr=on}}.<ref name=pokr/> Neutral gear rotation is 600 rpm. and rated rev is 1500 rpm.<ref>{{cite web
  |url=http://157.158.1.11/~uboottd/jareks/assort/VIII.htm|title=Chester Home Page|author=Jarek D. Stwarz|date=1997–2002|accessdate=2007-08-30
}}</ref>

==References==
{{reflist|Fablok 1D}}

{{commons category|position=left}}

{{PKP Locomotives}}

[[Category:Railway locomotives introduced in 1957]]
[[Category:Fablok locomotives]]
[[Category:Bo′Bo′ locomotives]]
[[Category:Diesel–electric locomotives of Poland]]
[[Category:Standard-gauge locomotives of Poland]]
[[Category:Shunting locomotives]]