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Siemens SD660

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Siemens SD660 (Types 2 and 3)
A train of SD660s on the Steel Bridge in Portland, Oregon
Interior of an SD660
ManufacturerSiemens
Built atSacramento, California
Constructed1996–2005
Entered service1997
Number built79
Number in service79
SuccessorSiemens S70/S700
Fleet numbers
  • Type 2: 201–252
  • Type 3: 301–327
OperatorsTriMet
Specifications
Car length91.93 ft (28.02 m) over couplers
Width8.71 ft (2.65 m)
Height13 ft (4.0 m)
Floor height
  • High floor section: 3.22 ft (980 mm)
  • Low floor section: 1.18 ft (360 mm)
Low-floor70%
EntryLevel
Doors8 per car (4 per side)
Articulated sections3
Wheelbase5.90 ft (1,800 mm)
Maximum speed55 mph (89 km/h)
Weight108,000 lb (49 t)
Traction systemSiemens IGBTVVVF[1]
Traction motors4 × Siemens 175 kW (235 hp) 3-phase AC induction motor
Power output700 kW (940 hp)
Acceleration3 mph/s (1.3 m/s2)
Deceleration
  • 3 mph/s (1.3 m/s2) (service)
  • 5 mph/s (2.2 m/s2) (emergency)
Electric system(s)Overhead line750 V DC
Current collector(s)Pantograph
UIC classificationBo′+2′+Bo′
AAR wheel arrangementB-2-B
Minimum turning radius
  • 82.02 ft (25.00 m) (horizontal)
  • 820 ft (250 m) (crest vertical)
  • 1,150 ft (350 m) (sag vertical)
Coupling systemScharfenberg
Multiple working
  • Within type
  • With Bombardier Type 1
[2][3]
Track gauge4 ft 8+12 in (1,435 mm) standard gauge

The Siemens SD660, originally known as the Siemens SD600,[4] is a double-articulated, 70%-low-floor light rail vehicle (LRV) manufactured by Siemens Transportation Systems. It was the first low-floor light rail vehicle to be used in the United States.[5][6] It first entered service in 1997 with its only operator, TriMet, on the MAX light rail system in Portland, Oregon, United States.

History

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The initial order placed by TriMet in May 1993 was for 39 cars. It was the first order for low-floor light rail vehicles (LRVs) in North America.[5] The order was subsequently expanded to 46 cars and ultimately to 52.[7] TriMet received the first car, which it numbered 201, in July 1996,[8][9] and the first nine cars entered service on August 31, 1997.[2][3] Siemens retroactively changed the car's model designation from SD600 to SD660, a change relating to its use of AC motors running on 60 Hz instead of DC ones, in 1998.[4] The 52nd car was received by TriMet in April 2000.[10]

TriMet later purchased 27 more SD660s (initially 17 cars, with another 10 added to the order in 2002),[11] which were built between 2003 and 2005. TriMet designated these "Type 3" in its fleet and numbered them 301–327. The last car was delivered in March 2005.[12]

All 79 SD660 cars were originally equipped with rollsign-type destination signs. TriMet replaced the original signs with LED-type signs in a two-year conversion program that lasted from fall 2014[13] to August 2016.[14]

Features

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Bridgeplate on an SD660
  • Bridgeplate wheelchair ramps. These are located at two of the four doorways on each side of an LRV, the two closest to the car's center.[5]
  • Bi-directional (or "double-ended"), with operating cabs at both ends[5]

See also

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Other Siemens light rail vehicles for the American market:

  • Siemens–Duewag U2 – high-floor LRV for either level boarding at high-platform stations or steps for passenger loading at street level
  • SD-100 and SD-160 – high-floor LRV for either level boarding at high-platform stations or steps for passenger loading at street level
  • SD-400 and SD-460 – high-floor LRV for both level boarding at high-platform stations and with steps for passenger loading at street level
  • P2000 – high-floor LRV for level boarding at high-platform stations, custom built for Los Angeles
  • S700 and S70 – low-floor LRV for passenger loading at street level
  • S200 – high-floor LRV for level boarding at high-platform stations

References

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  1. ^ "SD660 Light Rail Vehicle Technical Information" (PDF). Siemens Transportation Systems. May 15, 2005. Archived from the original (PDF) on August 9, 2007.
  2. ^ a b "World News Review". Light Rail & Modern Tramway. No. 718. UK: Ian Allan Publishing/Light Rail Transit Association. October 1997. p. 395. ISSN 0964-9255.
  3. ^ a b O'Keefe, Mark (September 1, 1997). "New MAX cars smooth the way for wheelchairs". The Oregonian. p. B12.
  4. ^ a b "Systems News". Tramways & Urban Transit. UK: Ian Allan Publishing/Light Rail Transit Association. October 1998. p. 397. ISSN 1460-8324.
  5. ^ a b c d Vantuono, William C. (July 1993). "Tri-Met goes low-floor: Portland's Tri-Met has broken new ground with a procurement of low-floor light rail vehicles. The cars will be North America's first low-floor LRVs". Railway Age. pp. 49–51. ISSN 0033-8826.
  6. ^ "LA And Portland Get New-Design LRVs". International Railway Journal. October 1993. pp. 26–27. ISSN 0744-5326.
  7. ^ Oliver, Gordon (September 26, 1997). "Tri-Met expands light-rail car order". The Oregonian. p. B6.
  8. ^ Oliver, Gordon (August 1, 1996). "MAX takes keys to cool new model". The Oregonian. p. D1.
  9. ^ Wolinsky, Julian (Winter 1998). "Block Signals [regular news section]". The New Electric Railway Journal. No. 38. p. 11. ISSN 1048-3845.
  10. ^ "Systems News". Tramways & Urban Transit. No. 750. UK: Ian Allan Publishing/Light Rail Transit Association. June 2000. p. 227. ISSN 1460-8324.
  11. ^ "Systems News". Tramways & Urban Transit. No. 776. UK: Ian Allan Publishing/Light Rail Transit Association. August 2002. p. 308. ISSN 1460-8324.
  12. ^ "Systems News". Tramways & Urban Transit. No. 809. UK: Ian Allan Publishing/Light Rail Transit Association. May 2005. p. 196. ISSN 1460-8324.
  13. ^ "Worldwide Review". Tramways & Urban Transit, March 2015, p. 121. UK: LRTA Publishing.
  14. ^ "Worldwide Review". Tramways & Urban Transit, November 2016, p. 440. UK: LRTA Publishing.
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Media related to Siemens SD660 at Wikimedia Commons