Intead Of EBM 190mm DC Centrifugal Fan With Eshaust Ventilation
There is no support for forward curved multi-blades centrifugal fan
from 133mm-250mm. Other model have the support. And there is no
current collector for backward curved impeller centrifugal fan. You
need to inform us if you want the support or current collector for
fan model, clarify the fan model, specification, air volume and
static pressure before placing an order. Forward curved
multi-blades centrifugal fan and back curved impeller centrifugal
fan, please take note on the air direction
Although OFAN, the market leader in EC technology, is a China
company, EC has nothing to do with the European Community! In this
case, EC stands for Electronically Commutated which basically means
it is a fan with a brushless DC motor
Brushless DC motors have been around for many years but there has
always been the need for a separate DC power supply. In
applications using only an AC supply this introduced added cost and
complexity. Then, in 2003, ebm-papst brought out an EC fan with
integrated electronics which could be connected directly to an AC
mains supply. In addition to performing the commutation, the
electronics convert AC to DC and control the fan speed by
regulating the power to the motor.
EC motor features reverse polarity protection, locked rotor
protection and soft start.
No additional protection such as contactors are required.
Can be pre-configured to suit specific sensors and applications,
and are supplied standard with 0-10V control input.
A full range of sensors are available including differential
pressure, humidity, temperature, air velocity and pollutant
1.How do I know which model I should choose
Please tell us the fans pressure and ofan and size of fans’
diameter you need. We will study and suggest you the right model.
2. Can we buy a sample for testing?
Sure, you are welcomed to buy a sample before mass order.
3. if the fans doesn't work well, what shall I do ?
If happens within one year, we will take in charge of the
maintenance, or send you a new machine freely.
Air performance curves
Our performance curves are tested in test camber according to DIN
24163 and refer to an air density of 1.2kg/M3. Testing conducted
with inlet cone in airflow direction A, without protection guard