133mm -900mm EC motor High pressure 30W-5700W high cfm EC backward curved centrifugal impeller radial blower fan
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High efficiency radial back blade fans with robust galvanized steel frame and aluminum profile supports.
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"Plug-fans" prepared to connect directly to ventilation equipment or various applications according to customer needs, facilitating the assembly on the equipment.
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Front fixing panel with integrated suction ring, custom OEM on request.
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Direct connections to the fan.
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RMEC models: 0-100% variable speed EC fan through electronic regulation via 0-10V signal.
Technical Features
Norminal Diameters Ranges :133mm- 630mm
Power input Ranges : from 30W -5500W
Air Flow Ranges : from 260 m³/h to 45,000 m³/h
Air pressure Ranges : Up to 2500 Pa
Safe operation : Locked rotor and thermal overload protection /Disconnection in case of malfunction /Tach output/Reverse Polatity/Soft Start
Accept Modbus RS485 Group Control Protocol ;
0-10VDC / PWM speed control system
Applications : EC fan array / Electronic cabinet cooling/ Clean room modules/ Heat exchangers / Air filtration systems / Military HRAC / Pharmaceutical / Biological control systems / Computer room air conditioning (CRAC) systems /Air-handling units ( AHU ) / FFU
Mainly Applications for EC centrifugal fan
Applications Ranges :
EC fan array / Electronic cabinet cooling/ Clean room modules/ Heat exchangers/ Air filtration systems / Military HRAC / Pharmaceutical / Biological control systems / Computer room air conditioning (CRAC) systems /Air-handling units,etc
Company Introduction
LONGWELL is a professional manufacturer of fans, blowers , motors and components for heating ,venlation air conditioner and refrigeration applications ,specialist in centrifugal fans, axial fans, ac /BLDC cross flow fans, single/double forward curved fans ,AC/BLDC/ECM motors as well as industrial fan blowers ,established in 1990 ,equipped with high advanced testing labs and production facilities including B&K noise lab, CFD simulation lab ,air dynamics test chamber, automatic welding machines , CNC machining centers ,auto robot injection machines which makes over millions fans capacity annually . with over than 28 years manufacturing experiences , LONGWELL is very skilled in designing , developing and manufacturing of fans and motors ,and exporting to over 30 countries including many Fortune Global 500 customers in HVACR application . and products complied with certificates of CCC,CE ,ETL and UL .
LONGWELL EMC Technology is giving more energy saving to our world .
Longwell EMC advantages are :
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Our ECM motorized fans'effiency is up to 90% which makes 30%-60% higher than the traditional motors .
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the build-in PCBA achieved stepless speed control,and easy communication with customers products .
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Longer life span up to 50,000hours .
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IP55,IP68 can be customized .
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Sine wave ,three phase eliminate electromagnetic-acoustic and lots of other protection functions like soft start ,overload ,motor block … .
LONGWELL has large products range which could offer customers a more perfectly products solutions by not only producing fans and motors ,but also do the perfectly motor and fans matching ,and offering good quality and very competitive prices by large scale productions .
LONGWELL expects all our customers have their 100% satisfied solution in fans and motors .
FAQ #1 What kind of impellers do you use in this backward centrifugal fan ?
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
FAQ #2 Why the EC motor centrifugal fan is much efficiency than AC centrifugal fans ?
Longwell EC fans always operate in the correct direction
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Operate on either 50Hz or 60Hz
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Operate on a wide voltage range
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200 – 277 V single Phase
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380 – 480 V three phase
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Operates much cooler – longer life
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Less heat for a refrigeration system to handle (increased refrigeration COP)
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30 % average energy saving compared to AC technology
FAQ #3 What's the testing standard of LONGWELL ec backward centrifugal fan ?
Cable connection with protruding, pre-assembled, variable cable, with wire-end ferrules, UV-resistant, water impermeable.
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.
FAQ #4 Lifespan of this ec centrifugal fan ?
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.
FAQ #5 Any other fans that LONGWELL can produce ?
LONGWELL is a professional manufacturer of fans, blowers , motors and components for heating ,venlation, air conditioner and refrigeration applications ,
specialist in centrifugal fans, axial fans, AC /BLDC cross flow fans, single / double forward curved fan BLOWERS ,AC / BLDC/ECM motors as well as industrial fan blowers, inline duct fans , Poultry ventilation fans ( AC / DC /EC ) , etc.
LONGWELL has large products range which could offer customers a more perfectly products solutions by not only producing fans and motors ,but also do the perfectly motor and fans matching ,and offering good quality and very competitive prices by large scale productions .
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