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| name = Kráľovské Holynské Železnice Class 420
| name = Kráľovské Holynské Železnice Class 420
| powertype = Electric
| powertype = Electric
| image = BDMW_250_004_Dresden_Neustadt_02_24.jpg
| image = Austria_1043_Lienz.jpg
| caption = A Class 420 operating an intermodal train
| caption = A Class 420 operating an intermodal train
| builddate = 1977-1988
| builddate = 1971-1982
| operatorclass = KHŽ Class 420
| operatorclass = KHŽ Class 400
| totalproduction = 1,161
| totalproduction = 1,488
| firstrundate = 1975
| firstrundate = 1970
| lastrundate = Still in active service
| lastrundate = Still in active service
| builder = HLZ
| builder = SLZ
| uicclass = [[Co′Co′]]
| uicclass         = {{wp|Bo′Bo′}}
| maxspeed = {{Convert|120|km/h|mph|abbr=on}}
| gauge           = {{track gauge|sg}}
| gauge = {{track gauge|sg}}
| trucks          =
| length = {{Convert|19.6|m|ftin|abbr=on}}
| length           = {{convert|15580|mm|ftin|0|abbr=on}}
| locoweight = {{Convert|123.0|t|abbr=on}}
| width            = <!--{{convert|****|mm|ftin|0|abbr=on}}-->
| electricsystem = {{wp|25 kV 50 Hz}} [[Alternating current|AC]] [[Overhead line|overhead]]
| locoweight      = {{ubl|{{convert|83|t|lb|-2}}}}
| collectionmethod = {{wp|Pantograph (rail)|Pantograph}}
| electricsystem  = 25 [[Volt|kV]] 50 [[Hertz|Hz]] {{wp|Alternating current|AC}}
| tractionmotors = Six
| collectionmethod = [[Overhead lines|Overhead]]
| poweroutput = {{Convert|5400|kW|abbr=on}}
| alternator      =
| tractiveeffort = {{Convert|380|kN|lbf|abbr=on}}
| generator        =
| operator = {{ubl|[[Holynské štátne Železnice]] (until 2001)|[[Kráľovské Holynské Železnice]]|[[Holyn Rail Freight AS]]|[[Blue Cargo]]}}
| tractionmotors  =
| locobrakes = Airbrake / {{wp|Regenerative brake|regenerative}}
| transmission    =
| trainbrakes = Airbrake
| maxspeed        = {{convert|135|km/h|mph|0|abbr=on}}  
| safety =  
| poweroutput      = {{ubl|{{convert|4000|kW|hp|-1|abbr=on}}}}
| lastrundate = Still in service
| tractiveeffort   = {{ubl|{{convert|274|kN|lbf|-1|abbr=on}}}}
| factorofadhesion =
| locobrakes      = {{wp|Airbrake}}
| trainbrakes      =
| safety          =
| operator         = {{ubl|[[Holynské štátne Železnice]] (until 2001)|[[Kráľovské Holynské Železnice]]|[[Holyn Rail Freight AS]]}}
| fleetnumbers    =
| officialname    =
| nicknames        =
| locale          = [[Holynia]]
| deliverydate    =
| firstrundate    =
| lastrundate      =  
| retiredate      =
| restoredate      =
| scrapdate        =  
| currentowner    =  
| disposition      =  
}}
}}
The '''Kráľovské Holynské Železnice Class 420''' locomotive is a renowned electric locomotive designed and manufactured in Holynia for use on both passenger and freight services. Nicknamed the "electric container" for its unique car body, it is considered one of the most iconic locomotives in Holyn rail history. Over 1,100 were built between 1977 and 1988.
The '''KHŽ Class 400''' is a electric locomotive built in [[Holynia]] between 1971 and 1982. Known for its robust design and reliability, it has become one of the most widely used locomotives in the Holynian rail network, with over 1,000 units produced during its manufacturing run. The Class 400 remains in active service today, primarily with Kráľovské Holynské Železnice, where it continues to handle both freight and passenger operations. Holyn Rail Freight purchased a number of locomotives in the early 2000s and operates them across their network.
== Design==
The Class 400 was developed to meet the growing demands of Holynia's electrified railway network, which operates on a 25 kV 50 Hz overhead electrification system. Older locomotive designs were not ordered in sufficient numbers and capacity issues meant longer trains were needed. This necessitated higher tractive effort.
 
The locomotive was designed to operate efficiently in both high-speed passenger services and heavy freight duties, a testament to its versatility. Its maximum speed of 135 km/h and a continuous power output of 4,000 kW made it an improvement over previous generations.
== Production ==
 
From 1971 to 1982, the Class 400 was manufactured at the Masovia Locomotive Works, located in Slatnik. Its large production run—exceeding 1,000 units—ensured that it became the backbone of Holynia's electrified rail operations. 
 
The locomotives were distributed across the country's rail network and served on a wide range of routes, from mountainous freight corridors to high-speed intercity services. Their flexibility and reliability earned them a reputation as workhorses of the Holynian railway system.
== History ==
== History ==
In the late 1960s, Holyn State Railways identified a need for a more powerful locomotive to meet increasing demands for reliable passenger and freight transport. Existing engines, while serviceable, lacked the necessary performance for the country's growing rail network. In response, the Holyn Locomotive Works (HLW) developed the Class 420, a six-axle electric locomotive suitable for a variety of rail tasks.
Following its introduction, the Class 400 became a symbol of Holynia's modernization efforts in rail transport. Its capability to handle both freight and passenger services efficiently made it invaluable for the Holynian State Railways.
 
The first prototypes rolled off the production line in 1972, and after rigorous testing, full production commenced in 1977. Over 1,100 units were built between 1977 and 1988, serving a dual purpose: hauling heavy freight on mountainous routes and providing high-speed passenger services on Holynia's emerging intercity lines.


With the fall of the communism in the late 1990s and subsequent modernization of Holynia's rail infrastructure, the Class 420 locomotives were updated to meet international standards. Many were refitted with improved braking systems, modernized control panels, and more efficient power units. These updates allowed the locomotives to remain competitive and operational well into the 21st century.
Although newer locomotive classes have since entered service, the Class 400 has undergone multiple upgrades to extend its operational lifespan.  


While newer models have since been introduced, the Class 420 is still widely in use for regional freight services and occasional passenger duty. Many private operators have purchased second hand Class 420s. Several have also been exported. Many Holyns view the locomotive as a symbol of the country's industrial resilience and ingenuity. Several units have been preserved in railway museums, celebrating their historical significance in Holynia’s transport heritage.
Today, a significant portion of the Class 400 fleet remains active, primarily handling InterCity, InterRegio passenger and cargo services. A number were purchased by Holyn Rail Freight, where they operate express intermodal trains. A few locomotives have been retired and preserved in railway museums.
[[category:Rail transport in Holynia]]
[[category:Rail transport in Holynia]]

Revision as of 17:17, 16 November 2024

Kráľovské Holynské Železnice Class 420
Austria 1043 Lienz.jpg
A Class 420 operating an intermodal train
Type and origin
Power typeElectric
BuilderSLZ
Build date1971-1982
Total produced1,488
Specifications
Configuration:
 • UICBo′Bo′
Gauge1,435 mm (4 ft 8 12 in)
Length15,580 mm (51 ft 1 in)
Loco weight
  • 83 tonnes (183,000 lb)
Electric system/s25 kV 50 Hz AC
Current pickup(s)Overhead
Loco brakeAirbrake
Performance figures
Maximum speed135 km/h (84 mph)
Power output
  • 4,000 kW (5,360 hp)
Tractive effort
  • 274 kN (61,600 lbf)
Career
Operators
ClassKHŽ Class 400
LocaleHolynia

The KHŽ Class 400 is a electric locomotive built in Holynia between 1971 and 1982. Known for its robust design and reliability, it has become one of the most widely used locomotives in the Holynian rail network, with over 1,000 units produced during its manufacturing run. The Class 400 remains in active service today, primarily with Kráľovské Holynské Železnice, where it continues to handle both freight and passenger operations. Holyn Rail Freight purchased a number of locomotives in the early 2000s and operates them across their network.

Design

The Class 400 was developed to meet the growing demands of Holynia's electrified railway network, which operates on a 25 kV 50 Hz overhead electrification system. Older locomotive designs were not ordered in sufficient numbers and capacity issues meant longer trains were needed. This necessitated higher tractive effort.

The locomotive was designed to operate efficiently in both high-speed passenger services and heavy freight duties, a testament to its versatility. Its maximum speed of 135 km/h and a continuous power output of 4,000 kW made it an improvement over previous generations.

Production

From 1971 to 1982, the Class 400 was manufactured at the Masovia Locomotive Works, located in Slatnik. Its large production run—exceeding 1,000 units—ensured that it became the backbone of Holynia's electrified rail operations.

The locomotives were distributed across the country's rail network and served on a wide range of routes, from mountainous freight corridors to high-speed intercity services. Their flexibility and reliability earned them a reputation as workhorses of the Holynian railway system.

History

Following its introduction, the Class 400 became a symbol of Holynia's modernization efforts in rail transport. Its capability to handle both freight and passenger services efficiently made it invaluable for the Holynian State Railways.

Although newer locomotive classes have since entered service, the Class 400 has undergone multiple upgrades to extend its operational lifespan.

Today, a significant portion of the Class 400 fleet remains active, primarily handling InterCity, InterRegio passenger and cargo services. A number were purchased by Holyn Rail Freight, where they operate express intermodal trains. A few locomotives have been retired and preserved in railway museums.