Highly efficient electronic commutation (EC) motor technology, used by Fantech fans, is helping the building services industry to meet the increasing demand for energy efficient products.
The technology has not only helped to reduce energy costs, but also minimises greenhouse gas emissions.
An EC motor uses electronics to periodically reverse the current direction between the rotor and the external circuit so that a DC motor can be plugged into a standard 240V supply.
As the electronics control the ramp up speed, in-rush current is kept to a minimum which means that the fan never draws more than the rated full load amps.
But it is the combination of a highly efficient DC motor and on-board speed control that reduces noise and leads to massive power savings.
By running EC fans at half speed, power consumption is reduced by nearly 87.5 percent and noise levels are 16dB lower.
The sophisticated electronics of the EC motor responds to 4 to 20mA or 0 to 10 volt signals which means it can be factory programmed to work with a large range of sensors (eg. temperature, air volume, air pressure, humidity, air velocity, CO2, CO).
The signal will then speed up or slow down the fan according to its requirements.
Fans with EC motors can also be controlled using a Building Management System (BMS).
Fantech has recently added extra functionality to the EC range by way of a unique controller known as the demand control ventilation (DCV) system.
This controller uses the feedback from sensors to automatically control the amount of ventilation required. The great advantage of this intelligent system is that the parameters for each of the sensors have already been preset to handle typical applications, thus reducing the need for installers to have specialised control knowledge.
Installation of EC motors is quick and simple, with less wiring and cabling and significantly less labour.
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