EC Axial Fans
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EC Axial Fans — selection guide
EC Axial Fans: 116 models, impellers Ø200–900 mm, maximum airflow 886–32,313 m³/h, static pressure to 1,140 Pa, EC motors, across 13 series. 73 of them carry a measured P-Q curve and 116 a dimensional drawing.
LWAE3G EC axial fans are the third-generation platform with a bionic blade profile and integrated EC motor: 0–10 V / PWM speed control, speed or fault feedback and high part-load efficiency, Ø200 to Ø900 mm. Sizes Ø200–450 mm run on 220 / 230 V single-phase (Ø200 alone has 20 variants), sizes Ø500–900 mm on 380 / 400 V three-phase. IP54 is standard, IP55 available, ambient −25 to +60 °C.
The EC line shares mounting dimensions with the AC line, so it is the usual upgrade for condenser pressure control, night set-back and BMS integration, with about 30% lower consumption at part load — more where the duty varies strongly, confirmed against the load profile.
How to select from this range
- Select at the maximum duty and let the controller pull speed down: an EC fan sized with 10–25% margin spends most of its life at 60–80% speed where efficiency is highest.
- Choose 0–10 V for BMS and condenser-pressure controllers, PWM for equipment controllers; both are on board.
- For redundancy in fan arrays use several smaller EC fans rather than one large one; each has its own fault output.
- Three-phase 380 / 400 V from Ø500 mm upward; single-phase 230 V below.
Where these fans are used
- Condenser pressure control on chillers and heat pumps
- Dry coolers and adiabatic coolers
- Data-center outdoor units
- Demand-controlled ventilation
Every figure above is measured on our own test rigs per AMCA 210 / ISO 5801 methods — see the test labs and certificates. Final selection is confirmed at the duty point and by project validation.
FAQ — EC Axial Fans
What control signals do LWAE3G fans accept?
0–10 V and PWM speed input, with tacho or alarm output; Modbus RTU is available on request. The wiring diagram on each model page shows the terminals.
How much energy does an EC axial fan save against AC?
About 30% at part load in typical condenser duty, more where the duty varies strongly; the saving depends on the load profile, so we confirm it against your operating hours.
Which EC axial sizes are three-phase?
Ø500, 550, 630, 710, 800 and 900 mm run on 380 / 400 V three-phase; Ø200–450 mm are 220 / 230 V single-phase.