Enclosures, Racks, Cabinets & Panel Products


Centrifugal fans for extreme applications

14 June 2017 Enclosures, Racks, Cabinets & Panel Products

Fan specialist ebm-papst has developed a patented membrane that protects electronic components in fans against corrosion that causes malfunctions – even in environments subject to frequent fluctuations in temperature and humidity. The fans are used primarily in IT and telecommunications applications.

Special protective measures are required for fans that are directly exposed to environmental conditions such as extreme humidity or rapid temperature fluctuations. Moisture can accumulate when temperature fluctuations occur frequently, for example in on/off operation, leading first to corrosion and then to failure of the electronics. ebm-papst’s newly developed movable membrane compensates for pressure fluctuations such as those resulting from rapid temperature changes. The housing is hermetically sealed and has no problem withstanding even highly dynamic temperature changes from -40°C to +70°C, so even monsoon rains do not present a problem.

The electronics themselves are also dustproof and resistant to high-pressure cleaners, complying with the requirements for IP69K degree of protection. In RadiCal DC centrifugal fans, the EC external rotor motor is integrated in the impeller. Their compact design makes them suitable for installation in even the tightest spaces. The impeller forms a perfectly functioning unit together with the aerodynamically adapted inlet ring. Installation and connection is a simple case of plug and play, and the speed can be smoothly controlled with a 0-10 V signal. Electronic commutation and the stator design ensure low-noise magnetisation with a high, acoustically imperceptible cycle frequency.

RadiCal DC fans are used in the base stations that enable mobile communication all over the world. The fans keep the electronics at a steady low temperature and ensure reliable heat dissipation, minimising the risk of component failure and extending system service life. They are also used in control cabinets and in IT hardware, such as networks and storage systems, where they cool servers and routers. RadiCal DC fans are available in sizes from 190 to 280 mm.

For more information contact ebm-papst, +27 (0)11 794 3434, richard.laing@za.ebmpapst.com, www.ebmpapst.co.za



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