Diameter of Impeller : 310mm ec backward centrifugal plug fan ;

Nominal Voltage : 230/380V-50/60Hz

IP Level :IP55

Speed Control system : Control Input 0-10V/PWM;

Life Expectance :50,000Hours(L10)，At 40℃ room, humidity 15%~65%RH ;

Electronic Protection  : Locked-rotor Protection ; Locked-Rotor Protection ; Over- Current Protection ; Over- Voltage Protection ; Soft Start ;Reverse Polarity Protection ;

Ambient Temp Rangs : -25 ℃ - +60 ℃

 

A highly developed plug & play system allows the fans to be ready for use quickly. This saves time and money:
– Perfectly attuned components
– Pre-wired and pre-programmed
– No separate frequency converter and motor protection switch required
– Includes conformity declaration for motor and electronics

Applications Ranges : EC fan array / Electronic cabinet cooling/ Clean room modules/ Heat exchangers/ Air filtration systems / Military HRAC / ec fans for ahu / Biological control systems / Computer room air conditioning (CRAC) systems /Air-handling units

Q1. Which kind of Impellers do you use in this EC ventilation fans ?

Motor impeller statically and dynamically balanced on two planes to balancing grade G 6.3 in accordance with DIN ISO 1940.
High-performance impeller with High static efficiency
– Aerodynamically optimized blade channel
– Integrated radial diffusor
Minimal noise emission
– Diagonal trailing edge for optimized flow control
– Integrated radial diffusor
Minimal vibration
– Dynamic balancing of the impeller-rotor unit minimizes
induced structure-borne noise and reduces the bearing load
Robust design
– Suitable for constantly high peripheral speeds
– Corrosion-resistant aluminum

Q2.  what’s the testing standard of Longwell ec backward centrifugal fans ?

Fan satisfies the applicable EMC guidelines and requirements with regard to circuit feedback; documentation and marking conform to the applicable EU Directives. UL 507 approval.
Reliable performance data, air performance measurements in intake-side test chamber according to ISO 5801 and DIN 24163, sound measurements in an anechoic test chamber in accordance with DIN EN ISO 3745.

Q3. Life span of this kind of EC Motor Fans ?

Longwell EC external rotor motor surpasses efficiency class IE4, magnets with no rare earths, maintenance-free ball bearings (sealed) with long-term lubrication, theoretical nominal service life of at least 40,000 hours of operation, installation with horizontal and vertical motor shaft; soft start, integrated current limitation. Integrated electronics, quiet commutation logic; 100 % speed controllable; control signal 0-10 V DC / PWM; tach output.