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Cooling Fans

NMB's focus is on total thermal management solutions

cooling fans
Features
  • Highest quality fans and fan electrical components by NMB
  • Ball bearings, casing, impellor, shaft and magnet produced in-house
  • NMB has the highest available ingress rating cooling fans - IP69K

How to choose a cooling fan?

Fans have different sizes (usually measured in mm) and frequencies, and different cooling fans are also built for different environments, such as fans made for wet or moisture heavy work, certain fans made for working at high and low speeds and different temperatures, and of course different voltages and power levels.

How to measure fan speed?

Fan speed can be measured manually with a tachometer, by pointing the device at any rotating fan blades. The device will give a reading of “blades per minute” which can be divided by the number of blades on the fan to determine the fan rpm. Fans should also come with this information from the manufacturer.

How to test a fan motor

The most common major cause of fan breakdown will usually be issues with the capacitor breaking down. This can be done with a fan motor multimeter, which will display (in Ohms) the measured charge that is flowing through the motor and the capacitor to the fan blades. Based on the manufacturer data sheet, you should be able to find if the capacitor is malfunctioning or failing.

Resources

Fan Engineering

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Advantages of NMB Fans

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3-Phase Fan Motors for Telecom

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Welder Fan Application Note

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