Engineering:SJ Rc

Specifications
Configuration:;
• UIC	Bo′Bo′
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Wheel diameter	1,300 mm (51.18 in)
Length	15,400 mm (50 ft 6 1⁄4 in)
Loco weight	80 t (79 long tons; 88 short tons) (Rc1); 76.8 t (75.6 long tons; 84.7 short tons) (Rc2, 3); 78 t (77 long tons; 86 short tons) (Rc4, 6, 7)
Electric system/s	Template:15 kV AC Catenary
Current pickup(s)	Pantograph

Type and origin
Power type	Electric
Builder	ASEA
Build date	1967–1988
Total produced	366

Rc
	Rc6 operated by SJ
Type and origin
Power type	Electric
Builder	ASEA
Build date	1967–1988
Total produced	366
Specifications
Configuration:;
• UIC	Bo′Bo′
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Wheel diameter	1,300 mm (51.18 in)
Length	15,400 mm (50 ft 6 1⁄4 in)
Loco weight	80 t (79 long tons; 88 short tons) (Rc1); 76.8 t (75.6 long tons; 84.7 short tons) (Rc2, 3); 78 t (77 long tons; 86 short tons) (Rc4, 6, 7)
Electric system/s	Template:15 kV AC Catenary
Current pickup(s)	Pantograph
Performance figures
Maximum speed	135 km/h (84 mph) (Rc1, 2, 4, 5); 160 km/h (99 mph) (Rc3, 6); 180 km/h (112 mph) (Rc7)
Power output	3,600 kW (4,800 hp)
Tractive effort	275 kN (62,000 lbf) (Rc1, 2); 235 kN (53,000 lbf) (Rc3, 6); 290 kN (65,000 lbf) (Rc4)

Short description: Swedish electric locomotive class

The Rc class is the most used electric locomotive in Sweden. Rc is a universal locomotive used both in freight and passenger trains. The largest operator is Green Cargo, although SJ, Tågab, Hector Rail and the Swedish Transport Administration operate it as well. Previous operators include Veolia Transport.

History

The Rc-model emerged from ASEA in the 1960s. It first appeared in 1967 to replace the older D-locomotives. Notably, ASEA facility manager and head engineer Tore Nordin was involved in designing and developing the Rc locomotive at ASEA.^[1] The initial Rc models are notable for using thyristors instead of the older relay-based system.

Usage

As of 2020, Rc-locomotives are still used all over Sweden in both passenger and freight lines, although on passenger trains they are slowly being replaced by new EMU, such as ER1.

Versions

Altogether, there have been eight versions of the Rc-locomotive in Sweden, including the freight locomotive Rm designed to pull iron ore trains. Rc1, Rc2, Rc4, and Rc5 have a maximum allowed speed of 135 km/h. Rc3 and Rc6 have a maximum allowed speed of 160 km/h. Rc7 was a rebuild of Rc6 meant to haul replacement trains needed when the X 2000 trains were canceled or delayed. Rc7 had a maximum allowed speed of 180 km/h. However, the maximum speed permitted without emergency electromagnetic track brakes is 160 km/h, and keeping extra carriages was considered too expensive. For that reason all Rc7 were subsequently converted back to Rc6. Rc1–Rc7 all weigh between 75 and 80 tonnes, whilst the Rm weighs 90 tonnes. The Rm's top speed is only 100 km/h and are more powerful locomotives.

Exports

Engines based on the Rc design were sold to other countries. ÖBB bought 10 Rc2 with extra brakes for the alpine conditions, ÖBB Class 1043. One of the locos was badly damaged in an accident but the remaining nine have been bought by the Swedish company Tågåkeriet i Bergslagen AB (TÅGAB), and returned to Sweden.^[2] A slightly altered Rc4 has been sold to Norwegian State Railways of Norway , known as El 16. The RAI 40-700 class (see Iranian Railways RC4) of eight engines were exported to Iran in the early eighties for use on the electrified stretches near the then-Soviet border; these were based on Rc4 but with Rm-type bogies, sand-proof air filters and no round windows on the side. In 1977, an Rc4 was tested in the United States for use with Amtrak's passenger trains, designated as X995. The Rc4 engine proved successful and would become the basis for the AEM-7.

Refurbished units

42 class Rc2 locomotives have been refurbished by Bombardier for Green Cargo. They include various upgrades and are now known as class Rd2.^[3]

Variations of Rc
Model	Operator	Built	Years	Power	Top speed	Note
SJ Rc1	Green Cargo, Tågab, Swedish Transport Administration	20	1967–68	3,600 kW	135 km/h	Last Rc1 retired from Green Cargo in 2015.
SJ Rc2	Green Cargo, Tågab, Infranord	100	1969–75	3,600 kW	135 km/h	Green Gargo Rc2 refurbished to Rd2, last one in 2014.
SJ Rc3^[4]	SJ AB and Green Cargo Hector Rail (which renamed them to type 143)	33	1970–71	3,600 kW	160 km/h	23 rebuilt from Rc2, 13 later sold to Green Cargo and Hector Rail. Last Rc3 sold by SJ in 2013.
ÖBB Class 1043	Tågab and Swedish Rail Administration and TGOJ	9	1971–73	4,000 kW	135 km/h
SJ Rc4	Green Cargo	130	1975–82	3,600 kW	135 km/h	160 km/h for Rc4P
SJ Rm	Green Cargo	6	1977	3,600 kW	100 km/h	Cargo-only locomotives, originally for use on the Ore Route, now used all over Sweden.
NSB El 16	CargoNet	17	1977–84	4,440 kW	135 km/h
AEM-7	Amtrak, SEPTA, MARC	65	1978–88	5,200 kW	200 km/h	Retired with original operators since 2018, 6 SEPTA units on temporary lease with NJ Transit Rail Operations but never used and later returned.
RAI 40-700 class	Islamic Republic of Iran Railways	8	1982	3,600 kW	100 km/h
SJ Rc5	Swedish Transport Administration (("SSRT") owner without own operation)	60	1982–86	3,600 kW	135 km/h	All now converted into Rc6
SJ Rc6	SJ AB and Swedish Transport Administration (("SSRT") owner without own operation)	100	1982–86	3,600 kW	160 km/h	60 converted from Rc5
SJ Rc7	SJ AB	2	2001	3,600 kW	180 km/h	Rebuilt from Rc6, all now converted back to Rc6
ALP-44	ABB Traction	33	1989-1997	4,320 kW	201 km/h	Built from AEM-7 and SJ Rc7 for NJ Transit; 2308 sent to SEPTA as a lawsuit settlement; Retired on NJT by 2012 and SEPTA by 2018.