A term „EC fan“ (electronic commutation) is generally used to mark energy-saving AC fans. In fact, these are DC (brushless) fans with AC/DC module and other electronics. EC fans reach up to 90% efficiency and they consume 50% less energy than traditional AC fans.
At the same time, a typical „50Hz“ motor noise is eliminated at EC fans and practically the only noise source is aerodynamic noise depending on overall fan design.
A good example of a modern fan is for example the type G1G140-AW31-42 i.e. radial (centrifugal) fan with 140mm diameter. Efficient motor with a „Soft start“ function enables to control fan speed through a DC input (0-10V) or PWM. To check a proper function, the fan also features „Tach“ output (2 pulses / revolution) as well as locked motor protection.
Thanks to the built-in electronics, at cyclic use it´s recommended to switch-off the motor through a control signal, not by switching-off main power supply.
G1G140-AW31-42 is suitable for a continuous operation (S1) and can be mounted in any position. It´s used for example for building ventilation.
Detailed information will provide you the G1G140-AW31-42 datasheet.
In case of interest in any EBM Papst product, please contact us at email@example.com.
energy-saving radial (centrifugal) fan, 230VAC
long lifetime, ball bearings
easy control by 0-10VDC / PWM input
Soft start and motor current limitation
„Tach“ output (2 pulses / revolution)
locked motor protection
direct selection of three speeds - Day/ Night/ Party
doesn´t require motor capacitor
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Date of publishing 23.12.2014 When you issue article on your website, please give its source: http://www.soselectronic.com/articles/ebm-papst/ebm-papst-modern-ec-fans-are-able-to-save-up-to-50-of-energy-1649