Fans with EC-motors

Product catalog summary

Overview: The document discusses the advantages and specifications of fans equipped with EC (Electronically Commutated) motors, highlighting their energy efficiency and environmental benefits. EC motors are known for their intelligent technology, which ensures optimal motor load and energy savings.

Key Features of EC Motors:

High efficiency across the entire control range.
Long service life with minimal overheating risk due to low heat losses.
Easy control with 0-10V DC or PWM signal.
Low noise levels throughout the control range.
Integrated control and protection electronics for easy connection.
No power loss or increased noise at start-up.

Protection and Control: EC motors come with built-in protections such as overheat, overload, and locked rotor protection. They also feature soft start capabilities, gradually increasing to full speed over a predefined time.

Comparison with Conventional Technology: EC motors consume less energy than traditional AC motors, especially at part-load, resulting in lower CO2 emissions.

Product Specifications:

K EC Series: Designed for duct installation with backward-curved blades and external rotor motors. Features include thermal contacts for overheating protection and a galvanized steel casing.
KVKE EC Models: Single inlet centrifugal fans with high static pressure and efficiency. They are thermally and acoustically insulated with rockwool.
MUB-EC Fans: Modular system with flexible airflow direction, suitable for various mounting positions. Features include backward-curved blades and a casing with fiberglass-reinforced plastic corners.
DVC Roof Fans: Driven by EC motors with integrated motor protection. Suitable for speed control with a potentiometer and available in various sizes.

Technical Data: The document provides detailed technical specifications for each fan model, including voltage, power, current, maximum airflow, RPM, sound pressure levels, weight, insulation class, and enclosure class.

Catalog excerpts

Fans with EC-motors www.systemair.com Photo: Scanpix Energy effi cient and environmentally friendly

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2 The products in this leafl et are equipped with EC-motors. EC-technology is intelligent technology, using integral electronic control to ensure that the motor always runs at optimal load. What can EC achieve? EC-fans are favoured for their economical use of energy and simplifi cation of control. EC-fans are driven by energy-saving motors with electronic control (commutation unit) to keep them running in the optimal operating range. According to their design principle, these are synchronous motors, which run without slip and therefore no slippage losses occur. An excellent solution for demand...

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3 Comparison with conventional technology Power consumption per year is calculated for an installation with continuous running. The CO2 impact is calculated as an average of the CO2 emission to produce electricity for the European countries. Source: Umwelt-Bundes-Amt Germany. Factor 0.6 kg CO2/kWh K 200 EC/AC KVKE 315 EC/AC DVC 355-S/DVS 355E4 AC MUB 450 E4 EC/AC

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4 • EC-motors, high effi ciency • 100% speed controllable • Speed regulator included • Integrated motor protection • Supplied with mounting bracket The K EC series is designed for installation in ducts. All the K-fans have minimum 25 mm long spigot connections. The fans have backwardcurved blades and external rotor motors (EC). The FK mounting clamp facilitates easy installation and removal, and prevents the transfer of vibrations to the duct. The fans are delivered with a pre-wired potentiometer (0-10V), set to 10V from factory. This can easily be changed if the installation requires a lower...

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6 • EC-motors, high effi ciency • 100% speed controllable • Speed regulator included • Low noise level • Integrated motor protection The KVKE EC models have a single inlet centrifugal fan with backward- curved blades and a maintenance-free external rotor motor (EC). These fans develop relatively high static pressure and have a very high effi ciency. The fans are delivered with a pre-wired potentiometer (0- 10V). The potentiometer is set to 10V from factory. This can easily be changed if the installation requires a lower duty. The KVKE motor and impeller are mounted on the access cover for easy...

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8 • 100 % speed controllable • Integrated electronic motor protection • Modular system • Low noise level • Flexible air fl ow direction due to removable panels • Installation in any mounting position • Safe and maintenance free operation • Energy-saving The MUB-EC fans are driven by EC-external rotor motors. These are energy saving motors with high effi ciency. The power electronics are integrated in the motor housing. All models have one potential-free terminal for error message. All motors are suitable to be used for 50/60Hz. The input voltage for single phase units can vary between 200 and...

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