Ofan Electric Co., Ltd
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Air Flow EC Centrifugal Fans For Air Exchanger With External Rotor Motor
| Type | Nomual voltage (VAC) | Frequency (HZ) | Speed (rpm) | Power imput (w) | Curreng draw (A) | Sound pressurelevel (dB) | Perm.amb.temp |
| LD280C-230D3-01 | 230 | 50/60 | 2150 | 170 | 1.2 | 60 |
-20~+60
|
Power factor correction(PFC): Passive and active(IEC61000-3-2)
Soft start, adjustable acceleration, CVT
Design operating temperature range: -30~60 degrees of minimum selection(The device in accordance with -40~85 degrees)
Protection: over voltage, over temperature, over current, phase loss detection, communication failures.
The basic interface: 0-10V/PWM, RS485/Modbus, 4-20Ma
The basic parameters of field programmable: Maximum speed, minimum speed, maximum power,
Let’s assume a laminar flow workstation requiring 13200m³/h at 450Pa. This requires 4 off Ø315 backward curved fans.
Now let us assume that this workstation operates for 50 weeks of the year and for 8 hours per day at full speed. During non working hours to
maintain the work area, the fans are run at roughly half the airflow.
AC fan 2800hrs @ 4 x 1.41kW = 5.64kW 15,792 kWh
5600hrs @ 4 x 0.62kW = 2.48kW 13,888 kWh
Total A 29,680 kWh
EC fan 2800 hrs @ 4 x 1.04kW = 4.16kW 11,648 kWh
5600 hrs @ 4 x 0.27kW = 1.08kW 6,048 kWh
Total B 17,696 kWh
A minus B 11,984kWh saved with the EC fan
aster/Slave : This system is used when several fans are used together within a single application. The main fan (Master) is individually pressure
controlled. The other fans (slaves) are then speed controlled by the Master fan : Slave Fans are always at the speed of the master fan (Rosenberg Versions only).
Safe-common necessity of company and customers
Excellent –worker and product
Efficiency-worker and produc
