Alstom Prima H4

Alstom Prima H4
Manufacturer:	ALSTOM , Belfort
Axis formula :	Bo'Bo '
Gauge :	1435 mm ( standard gauge )
Length over buffers:	18750 mm
Height:	4478 mm
Width:	2955 mm
Service mass:	90 t
Wheel set mass :	22.5 t
Top speed:	120 km / h
Hourly traction:	300 kN
Driving wheel diameter:	920 mm
Tank capacity:	3000 liters of diesel
Power system :	1 AC 15 kV 16 2/3 Hz 1 AC 25 kV 50 Hz
Particularities:	Multiple traction of a maximum of four locomotives possible in a group

The Alstom Prima H4 , also known as Prima H4 or H4 , is a shunting locomotive developed by Alstom at the Belfort location , which can carry out both mainline and heavy shunting operations. At the Swiss Federal Railways , the locomotive bears the class designation SBB Aem 940 .

history

The basis for the development of the Alstom Prima H4 was laid by a tender by SBB in Switzerland in 2015. This renews its own vehicle fleet and has to procure several locomotives for different numbers of axles, power class, mass and operational environment. For example, SBB Am 6/6 has reached the end of its service life for the heavy shunting operation on the run-off mountain after 40 years and is to be replaced. The SBB Am 841 from the 1990s and the SBB Ee 6/6 II from the 1980s are also to be replaced. With the H4, Alstom wanted to present a solution for this exchange with an H4 bi-mode variant in the area of four-axle shunting locomotives at InnoTrans 2018.

Alstom won the SBB tender and a deployment of 47 vehicles is currently planned. Three H4 locomotives were already produced in 2018 and underwent test drives for train protection and the desired operational requirements.

Alstom intends to continue investing in the development of the locomotive platform, with the group receiving support from the French state energy and environmental authority ADEME with around four million euros.

technical features

Similar to the Prima H3 , a serial drive train was used on the locomotive platform of the Prima H4 as the basis for the construction and modularity of the drive concept. This modularity enables the conversion of a vehicle for different external environmental conditions and application scenarios. By combining different systems in the drive train, up to 50% diesel fuel is to be saved, 50% less environmentally harmful emissions are emitted and up to 15% maintenance costs for a vehicle are saved.

So far, the H4 is planned with four different powertrain variants:


variant	power	Field of application
H4 hybrid	600 kW accumulator 900 kW diesel generator	Shunting operation, route operation
H4 Bi-Mode Electric	900 kW diesel generator 2000 kW with contact wire	Heavy shunting operation, route operation
H4 bi-mode battery	600 kW accumulator 1600 kW electrical	Shunting operation, main lines in line operation and tunnels (emission-free)
H4 dual engine	900 kW diesel generator 900 kW diesel generator	Heavy shunting operation, route operation

commitment

The locomotive is to be used both in line operations, shunting operations on the drainage mountain and in track construction. The electrically powered vehicles, which do not emit any gaseous emissions, are also suitable for operation in tunnels. The SBB will receive the first 47 locomotives in Switzerland.

Web links

Commons : Alstom H4 (bi-mode) - collection of images, videos and audio files

Individual evidence

↑ Alstom Prima H4 SBB. In: https://railcolornews.com/ . Retrieved on August 19, 2020 (English).
↑ Ulf Ringer: Alstom shows the “Prima H4 Bi-mode” locomotive. In: https://privatbahn-magazin.de/ . July 10, 2018, accessed August 19, 2020 .
↑ ^a ^b ^c Aem 940: an elephant on four axes | SBB News. In: news.sbb.ch. Retrieved August 19, 2020 .
↑ Theo Stolz: CH: Inside Alstom's H4 locomotive for SBB. In: https://railcolornews.com/ . July 19, 2018, accessed August 19, 2020 .
^ France: Government and Alstom in conversation about the future of the Belfort plant. In: https://www.lok-report.de/ . October 27, 2017, accessed August 19, 2020 .
↑ ^a ^b Max Wittwer: SBB Aem 940 locomotive. In: https://www.ews.tu-berlin.de . May 9, 2020, accessed August 19, 2020 .
↑ Frank Paukstat: Series Aem 940. In: https://www.bahnsichtungen.net/ . October 1, 2018, accessed August 19, 2020 .

[1] Alstom Prima H4 SBB. In: https://railcolornews.com/ . Retrieved on August 19, 2020 (English).

[2] Ulf Ringer: Alstom shows the “Prima H4 Bi-mode” locomotive. In: https://privatbahn-magazin.de/ . July 10, 2018, accessed August 19, 2020 .

[:0-3] Aem 940: an elephant on four axes | SBB News. In: news.sbb.ch. Retrieved August 19, 2020 .

[4] Theo Stolz: CH: Inside Alstom's H4 locomotive for SBB. In: https://railcolornews.com/ . July 19, 2018, accessed August 19, 2020 .

[5] France: Government and Alstom in conversation about the future of the Belfort plant. In: https://www.lok-report.de/ . October 27, 2017, accessed August 19, 2020 .

[:1-6] Max Wittwer: SBB Aem 940 locomotive. In: https://www.ews.tu-berlin.de . May 9, 2020, accessed August 19, 2020 .

[7] Frank Paukstat: Series Aem 940. In: https://www.bahnsichtungen.net/ . October 1, 2018, accessed August 19, 2020 .