New test area: PJM accredited for pantograph

PJM has expanded its scope as an accredited test center in accordance with ISO/IEC 17025 and now also tests the dynamic interaction between pantograph and overhead contact line. In addition to measurements in accordance with EN 50317, the accreditation also includes simulations in accordance with EN 50318, making PJM the only company in Austria with accreditation for the specialist area of pantographs.

Over the past two years, the Austrian system specialist has invested in the infrastructure of the new department. The pantograph test rig for calibrating the measuring system - as well as the technical equipment for other areas - has been set up at the company's site in Graz. Extensive tests in the wind tunnel have proven that the measuring system is non-reactive. With the existing measuring equipment, tests can be carried out with up to two measuring pantographs, which means that multiple-unit operations can also be realised. The requirements for the interaction between pantographs and the overhead contact line system of the new service jet for ÖBB had been tested in summer (as announced in the media release: https://pjm.co.at/wp-content/uploads/2024/06/PI-PJM-Servicejet-6-2024-DE-Web2.pdf). In the coming weeks, the measurement technology team will be testing another rail vehicle in single and multiple-unit operations.

‘Due to decarbonisation, the focus will be on electric rail vehicles in the future. With its corresponding expertise and infrastructure, PJM is ideally positioned for the new specialist area,’ says Martin Joch, CEO of PJ Messtechnik GmbH. With the new specialist area, PJM offers several advantages for clients, such as the efficient sequence of the various tests for rail vehicles. The expertise in the area of simulations offers particular added value: ‘Simulations significantly minimise the testing effort for multiple tractions. Theoretical calculations allow the large number of variants to be reduced to relevant train combinations, which are then tested in dynamic track tests. This saves valuable time and reduces costs,’ says Martin Joch.

Get more details in the media release

PJM-Pantograph-klein

Video: Dynamic tests of ČD's passenger coaches

PJM played an important metrological role in the new Viaggio Comfort passenger coaches, which will enrich the fleet of Czech Railways České dráhy and were developed and manufactured by Siemens Mobility.

PJM carried out test runs on the entire Austrian railway network, including high-speed trains on the Westbahn line, in the Alpine terrain in Tyrol and on the Semmering Railway (UNSECO World Heritage Site). The driving behaviour and brakes were tested at 230 km/h or in extremely wintry conditions in the snow.

PJM was also commissioned with the development and production of the measuring wheelsets.

Video

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Nightjets of ÖBB: Measuring wheel sets and approval tests

In future, a total of 33 Nightjets of the new Viaggio Next Level generation from Siemens Mobility will ensure comfortable and at the same time climate-friendly travel in Central Europe. For the approval of the newly developed passenger coaches, PJM is on board as an accredited test center according to ISO/IEC 17025. The Austrian system specialist was commissioned for the overall approval in cooperation with ÖBB. The contract specifically includes the instrumented wheel sets as well as the approval tests in the areas of running behavior, fatigue strength, acoustics and aerodynamics.

6 instrumented wheel sets were developed and manufactured in Graz and then installed in the test vehicle at the ÖBB plant in Vienna. The test runs started in autumn 2021. The test train is in use throughout the entire Austrian rail network. To evaluate derailment safety, the first approval tests started in the field of running behavior, after which the bogies were upgraded for the test runs in the area fatigue strength. Finally, high-speed measurements follow for the aerodynamics area. The acoustic tests will complete the approval tests. "For an extensive project like this, it is above all our metrology expertise and experience in bringing together all specialist areas that prove their worth. Our flexibility and routine, which we have gained from our numerous international projects, are also essential. Due to the weather, there are always changes in procedures, for example during test runs in winter on the Arlberg at 1,000 m above sea level," explains Martin Joch, CEO of PJM. "A good collaboration with the project partners is also immensely important in large-scale projects. The cooperation with ÖBB's measurement group is excellent."

Get more in the media release:

https://pjm.co.at/en/wp-content/uploads/sites/2/2022/10/10-2022-Presse-Info-Nightjets-PJM-Web2-EN.pdf

 

 

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Privatbahnmagazin reports on approval tests for Stadler FLIRT trains

The German special interest magazin "Privatbahnmagazin" reports on the PJM-tests for approval for Stadler Bussnang AG. Further 40 FLIRT trains will be operated by the regional railway TILO.

 

 

Get the full story in German language: https://pjm.co.at/en/wp-.content/uploads/sites/2/2020/04/PRIMA_Stadler_Flirt0320.pdf

 

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Just like a fairy tale: Approval tests of Stadler FLIRT on the regional railway TILO

It's landscape just like in a fairy tale: The approval tests of new Stadler FLIRT trains were performed amongst others on the world-famous Gotthard railway. Within the comprehensive tests, there was a focus on the aquivalent conicity of the rail-wheel-contact. Get the full project story as download or on: 

https://pjm.co.at/en/blog/Showroom/high-tech-metrology-in-a-picturesque-landscape/

 

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Austria

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