• Aufbau Erde schematisch mit Statistiken im Hintergrund

Reduction in weight and greater efficiency on the train roof

Техника для вентиляции

New ZAplus plastic fan system with fire safety certificate

The manufacturer Ziehl-Abegg has developed a fan system made of a special plastic for capacitor cooling in roof air conditioning units: it weighs less, is more efficient and yet still meets the fire safety standard DIN EN 45545. Seen over the entire life cycle, the costs are significantly lower compared with conventional fans.

Up to now, axial fans fitted to train roofs have always been made of metal for fire safety reasons; the same applied for the mounting. Ziehl-Abegg is revolutionising this by using a thermoplastic, fibre composite material. The so-called ZAmid from the fan experts in Künzelsau, has been in operational use in countless client applications since 2011. The technology leader is now also incorporating this material into railway technology. The advantage: the weight of the fan is reduced by up to 40 percent – weight that doesn’t have to be either moved when the equipment is operating, or permanently transported with the train as it travels along. The name of the product: ZAplus.


Since both the fan blades and the nozzle with integrated motor mounting, manufactured in a one-shot injection mould, are made from the high-performance composite material, these elements allow for a highly aerodynamic design, increasing the overall efficiency of the fan system. This also reduces energy consumption whilst the fan is operating. Since air conditioning is one of the biggest users of energy on trains, this saving should not be underestimated by the operator.


ZAplus commutator nozzles are made entirely of the high-performance composite material so are corrosion-resistant. Made in a one-shot injection mould, the mounting contains no screws or bolts that can work loose.


Ziehl-Abegg offers the new ZAplus system for railway technology, with both classic AC motors and energy-saving EC motors. The advantage of EC Motors is the infinitely adjustable speed, depending on the cooling energy requirement or, for example, when the train enters a station. In addition to saving energy, this also brings a perceptible reduction in noise levels for residents and railway passengers. It goes without saying that the EC motors are network-compatible for future applications.  


About Ziehl-Abegg


Ziehl-Abegg (Kuenzelsau, Baden-Wurttemberg, Germany) is one of the leading global companies in the field of ventilation, control and drive technology. Back in the Fifties, Ziehl-Abegg established the basis for modern fan drives: external rotor motors which even today are still seen as state-of-the-art worldwide. Another area of business is electric motors which provide the power, for example, for elevators, medical applications (computer tomography equipment) or deep-sea underwater vehicles. The theme of electro-mobility for motor vehicles was established as part of the Ziehl-Abegg Automotive Team in 2012.


The high-tech company has an impressive innovative capability. Ziehl-Abegg employs 2,200 personnel in its production plants in Southern Germany. The company has a global workforce of 3,900 spread between 16 production plants, 28 companies and 108 sales locations. The products, approx. 30,000 in all, are sold in more than 100 countries. Turnover in 2017 totaled 540 million euros, with exports accounting for three quarters of the figure.


Emil Ziehl founded the company in Berlin in 1910 as a manufacturer of electric motors. After the Second World War the company’s headquarters were relocated to Southern Germany. Ziehl-Abegg SE is not a listed company but instead is family-owned. For more information go to www.ziehl-abegg.com.