ALP-46

The NJT ALP -46 is one of the German 101 series derived and built by Bombardier in Kassel electric locomotive of the transport company New Jersey Transit ( NJT ), which is used to pull trains of the New York suburban. The ALP -46 operates mostly with double-deck coaches in trains up to 160 km / h fast on the North - East corridor.

The second production run NJT ALP- 46A is designed for 201 km / h (125 mph).

History

NJT took over in 1983 suburban services on all Conrail lines in the state of New Jersey with their own vehicles and staff. From 1990 to 1997 32 thyristor locomotives ALP -44 were procured, which are derived from the Swedish Rc6. To cope with the ever-growing passenger numbers NJT sought after new, more powerful locomotives. End of January 2000 signed and NJT ABB a contract for the delivery of 24 three-phase locomotives, which was increased by 5 locomotives in September 2001. The additional locomotives should be used for the merged Amtrak Clocker service; this fast regional train on the North - East corridor, however, was set after a short time.

In February 2008, NJT ordered for 155 million euros a further 27 locomotives an improved variant of the ALP -46 series, which is called ALP- 46A. The delivery was scheduled for the fall of 2009 .. The order was increased in the summer of 2009, at nine piece to replace the oldest locomotives of the ALP -44 series. On 5 April 2011, the last locomotive from the second series was delivered.

Design features

The mechanical part is based on the DB - 101 series, but had to be adapted to American conditions. The box was strengthened so that it can withstand higher pressure forces the buffer. The wheel spacing remained the same, with the ALP -46 but smaller wheels according to American standard (new: 1118 mm; worn 1046 mm ) received and bogies were adapted to the higher Lokgewicht. The gear ratio has been changed so that the starting tractive effort at the expense of top speed was increased to 319 kN. With 92.5 t weight the ALP -46 is a lightweight locomotive to American standards.

The ALP -46 provides at start 319 kN tensile force and the wheel has a power output of 5300 kW. Traction motors and hollow shaft drive were taken with minor modifications from the 101 series.

The ALP- 46 is a multi-system locomotive and can operate under the following three AC systems:

  • 25 kV 60 Hz ( Great Notch and Gladstone Branch)
  • 12.5 kV 60 Hz ( originally Coast Line to Long Branch, Metro-North Railroad )
  • 12 kV 25 Hz ( Northeast Corridor )

In contrast to DB Class 101, the ALP- 46 has a drive group, that is, the two traction motors of a bogie are powered by the same inverter. The vacant inverter is used for the three-phase train line to supply the cars with electricity.

ALP- 46A

Compared with the ALP -46, the ALP- 46A some changes:

  • The speed was increased to 200 km / h and the power of 5.6 MW,
  • The converters are designed in IGBT technology with water cooling and
  • The locomotives have Einzelachsantrieb.

Gallery

NJ Transit locomotive 4620 pushes a train from the South Orange train station towards Dover

Pictures of ALP-46

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