Description; Ec Technology; Characteristics - SystemAir AxZent Betriebsanleitung

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Description

6.1

EC technology

EC technology is based on the optimum utilisation of the motors, and ensures that the motor is constantly adjusted to the right opera-
tion. In addition, the control electronics ensure that the proportion of effectively used energy is much higher compared to AC motors.
EC fans stand out thanks to their effi cient use of energy and their outstanding adjustability. The speed of the fans can be freely adjus-
ted to meet ventilation requirements. The fans also operate very effi ciently. This means that they use far less energy than AC drives,
whilst providing the same air performance. Furthermore, EC motors can save energy both in partial and full-load operation. They lose
less of their
effi ciency in partial-load operation than asynchronous motors of the same power.
6.2

Characteristics

General
•
Medium temperature up to 120°C
•
Low sound level
•
Reliable and easy to maintain
•
Vertical air throughflow
•
Wide range of accessories
•
REV switches
•
DVNI EC models with 50 mm thick mineral wool noise insulation
High-pressure rotors
•
Backwards-curved, free-running, high-pressure rotors made from seawater-resistant aluminium
Motors
•
High effi ciency EC motors
•
Motors outside the air stream
•
Vibration-free suspension
•
Freely controllable air fl ow by means of speed adjustment
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Overheating protection
•
Power electronics in motor housing
•
Floating connection for status notifi cation
Housing
Base frame
Housing layout
Fig. 1: Example DVN 355 – 560 EC
Base frame with withdrawn inlet nozzle made of galvanised steel sheet
Housing made of seawater-resistant aluminium
Bird guard made from powder-coated, galvanised steel sheet
Fig. 2:
•
Voltage supply
–
1-phase 200 - 277 V
–
3-phase 380 - 480 V
•
Motors suitable for 50 Hz and 60 Hz frequencies
•
Speed control via 0 - 10 V signal possible.
•
Output voltage 10 V
(for connection to an external potentiometer or sensor)
Example DVNI 355 – 560 EC
Description
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