Home ProductsEC Centrifugal Fan

centrifugal fans and blowers

Certification
Good quality Electronically Commutated Fan for sales
Good quality Electronically Commutated Fan for sales
OFAN' products are so reliable ,good quality,This is much more durable High-end product

—— Mark Aramli

OFAN advanced design,good supervision of production , good package

—— Jimmy K.y.yap

OFAN' Pay attention to details,good production line,durable

—— Andry Andika

I'm Online Chat Now

centrifugal fans and blowers

AC EC Centrifugal Fans And Blowers For Air Exchanger With External Rotor Motor

  • AC EC Centrifugal Fans And Blowers For Air Exchanger With External Rotor Motor
  • AC EC Centrifugal Fans And Blowers For Air Exchanger With External Rotor Motor
Product Details:

Air Flow Evenly Wall Fan With Ventilating Units For Ld280c-230d3-01

 

1. Enable the selection of different power levels thus to get the best match of price and performance according to customers’load requirements

2. As the rotor is mounted to interior, the external rotor fan is more compact constructed, smaller and easy to abstract heat., thus ensure to maximum the reliability of fan operation

 

Electrical Protection

3-1 Locked-rotor Protection

Over-current limiting circuit protects motor from damage at least for 72 hours

of locked rotor condition at rated voltage.

3-2

Maximum Current

under Locked Rotor

 

 

A, Typical inrush current when the motor is trying to re-start under locked rotor conditions is 2~4 times the normal running current

reoccurring and for 16~20% of restarting cycle period.

B, If he CL function is used this restarting inrush current is about the same as

the normal running current.

3-3 Reverse Polarity Protection

No damage if the positive and negative leads are reversed under maximum

operation voltage conditions.

3-4 Over Voltage Protection

The circuit will be shut down automatically when input voltage over 60VDC.

And re-started when Voltage down to 60VDC below.

3-5 Soft Start

In 5 seconds after power on and speed control voltage gets to 1.5V or PWM

duty cycle at 10% above.

Low Noise Brushless Motor EC Centrifugal Fans With Speed Control 250mm

  • Low Noise Brushless Motor EC Centrifugal Fans With Speed Control 250mm
Product Details:

Cold Frost Ec Industrial Fan With Low Noise Ld250c-230d3-01

 

1. starting moment is big
2. motor high efficiency range is big
3. the volume is very compact.
4. motor efficiency is high(>80%

 

EC DC input ec centrifugal exhaust fan

 

PBM Motor and Fan is a China mainland manufacturer and EC technology consulting company offering an extensive range of EC(Electronically Commutated) motors, fans and solutions, investing in the latest developing, manufacturing and technical equipment with in-depth processes & procedures. Our main products are EC fans, including EC axial fans, EC centrifugal fans and EC blowers. We do both AC and DC current type. And EC Motor is the core technology of our products.

Eletronically Commutated Motors(EC Motors)also known as Brushless DC Motors(BLDC) are synchronous electric motors powered by direct-current(DC) electricity and having electronic commutation systems,rather than mechanical commutators and brushes.The current-to-torque and voltage-to-speed relationships of BLDC motors are linear.

PBM fans are widely used in many fields. For example, axial fan for telecom, backward curved centrifugal fan for air exchanger,(inline duct fan)hydroponic products and FFU, forward curved centrifugal fan for air purifier and air conditioning,blower for kitchen.

similar EC Centrifugal Fans And Blowers , Industrial Ventilation Fans Backward Curved

  • similar EC Centrifugal Fans And Blowers , Industrial Ventilation Fans Backward Curved
  • similar EC Centrifugal Fans And Blowers , Industrial Ventilation Fans Backward Curved
Product Details:

Electric Power Ec Motor With Ld250c-230d3-03 For Refirgeration

 

1. motor high efficiency range is big
2. the volume is very compact.
3. motor efficiency is high(>80%)

4. Motor efficiency loss is le

5. motor temperature rise is low

Electrical Protection

3-1 Locked-rotor Protection

Over-current limiting circuit protects motor from damage at least for 72 hours

of locked rotor condition at rated voltage.

3-2

Maximum Current

under Locked Rotor

 

 

A, Typical inrush current when the motor is trying to re-start under locked rotor conditions is 2~4 times the normal running current

reoccurring and for 16~20% of restarting cycle period.

B, If he CL function is used this restarting inrush current is about the same as

the normal running current.

3-3 Reverse Polarity Protection

No damage if the positive and negative leads are reversed under maximum

operation voltage conditions.

3-4 Over Voltage Protection

The circuit will be shut down automatically when input voltage over 60VDC.

And re-started when Voltage down to 60VDC below.

3-5 Soft Start

In 5 seconds after power on and speed control voltage gets to 1.5V or PWM

duty cycle at 10% above.

Durable Pa66 Electric Centrifugal Fans And Blowers Low Noise 82w 0.65A

  • Durable Pa66 Electric Centrifugal Fans And Blowers Low Noise 82w 0.65A
  • Durable Pa66 Electric Centrifugal Fans And Blowers Low Noise 82w 0.65A
  • Durable Pa66 Electric Centrifugal Fans And Blowers Low Noise 82w 0.65A
Product Details:

1. EC is easy

 

Permanent magnet motors running on high voltage direct current (DC) electricity with built in AC to DC conversion allowing them to run direct from single phase or three phase mains supplies. There are several suppliers of such motors

 

2. What’s so special about an EC fan?

 

2.1 EC fans are generally recognised as being the latest thing in energy efficient air movement technology, but what is an EC fan and what makes it so special?

Although OFAN, the market leader in EC technology, is a China company, EC has nothing to do with the Asia Community! In this case, EC stands for Electronically Commutated which basically means it is a fan with a brushless DC motor

 

 

3. Control options

 

To control the motor accurately and efficiently the integrated electronics have to continuously monitor the motor speed and adjust the control input. By making this circuitry available to external sources it’s possible to provide simple speed control options. Dependent on the motor type, any sensor which can provide a 0-10V/PWM or 4-20mA input can be directly connected to provide closed loop control for temperature, pressure or whatever parameter you choose to measure. No need to worry about DC supplies for the sensors either, this is provided by another connection on the motor. In fact, simply connect a potentiometer and you have infinitely variable speed control. No triacs, no frequency inverters and no whining noises! An EC motor under speed control is virtually silent.

 

 

4. How does this affect energy efficiency?

 

Doubling the speed of a motor increases its power input by a factor of 8 so it’s very wasteful to run a fan faster than is required. If you can tailor the fan speed to match the demand, the potential for energy saving is huge. Even when compared to on/off operation, EC speed modulation is much more efficient.

EC fans can also contribute to increasing the overall efficiency of an application. In a cooling system for example, keeping the refrigerant pressure constant rather than having it rise and fall as fans switch on and off has been found to reduce the load on the compressor resulting in even greater energy saving

 

 

5. Advantages of GreenTech EC technology

 

5.1 Tremendous energy savings of 30 % on average

5.2 Future-proof and ready for ErP2015

5.3 tntelligent electronics for numerous control functions

5.4 Hardware and software from a single source

5.5 Easy 1:1 replacement from AC technology to GreenTech EC technology

5.6 Can be used worldwide (due to wide voltage input)

5.7 Over 10 years of experience in the area of EC technology

5.8 GreenTech as implemented purchase proposition

 

Detailed Product Description
Type: LD175N-230D3-00 Nominal Voltage: 230V
Speed: 3650rpm Power Imput: 82w
Current Draw: 0.65A Air Flow: 680
Contact Details
Ofan Electric Co., Ltd

Contact Person: Mr.

Tel: 86-20-89895214

Fax: 86--89895234

Send your inquiry directly to us (0 / 3000)