FOCUS ON EC FAN ONLY
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
PB3N280B2EH is a 280mm EC backward-curved centrifugal fan made especially for Free Cooling System of Outdoor Telecom Equipment Shelters in IT and Electronic Industry. Its high-efficiency EC motor minimizes waste heat released into the circulating air and efficiently reduces the accumulation of internal heat load for outdoor cabinets with constrained installation space and demanding heat dissipation circumstances. Compared to conventional forward-curved fans, the backward-curved centrifugal fan achieves aerodynamic efficiency of over 80% at high static pressure circumstances. The 11-blade aluminum alloy backward-curved impeller reduces eddy current losses during airflow discharge at extremely high static pressure settings of 895 Pa, resulting in exceptional energy efficiency.
Upgrades to protection levels, customized wire designs, customized communication protocols, and unique installation structures are just a few of the customizable services that PMB provides. PBM assists telecommunications operators, equipment integrators, and outdoor infrastructure clients in achieving more effective, dependable, and energy-efficient thermal management for contemporary communication infrastructure with its outstanding EC backward-curved centrifugal fan technology.
General Characters
|
1-1 |
Rated Voltage |
230 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
184~270 VAC |
|
1-4 |
Rated Speed | 2760 RPM |
|
1-5 |
Input Current |
1.75 A |
|
1-6 |
Input Power |
390 W |
|
1-7 |
Air Flow |
1647.80 CFM / 2800 M³/H |
|
1-8 |
Static Pressure |
3.58 inH₂O / 895 Pa |
|
1-9 |
Acoustical Noise |
80 dB(A) |
|
1-10 |
Life Expectancy |
50,000 Hours (L10) At 40℃ room, humidity 15%~65%RH. |
|
1-11 |
Insulation Class |
Class B |
|
1-13 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-14 |
Speed Control |
Control input 0~10VDC / PWM |
|
1-15 |
Protection Type |
IP44 |
|
1-17 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø280 mm X 173 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Galvanized metal shell |
|
2-3 |
Number of Blades |
11 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
AC (AWG18 #), DC (AWG22 #) |
Environmental Characters
|
3-1 |
Operating Temperature |
-25℃ to 60℃ |
|
3-2 |
Storage Temperature |
-40℃ to 75℃ |
|
3-3 |
Operating Humidity |
5% to 90% RH |
|
3-4 |
Storage Humidity |
5% to 95% RH |
Performance Curve
Testing Condition:
Input Voltage----Operating voltage (230VAC/50Hz)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: AC(3×AWG18#)，DC(4×AWG22#)
2.AC: Brown=Live Line，Blue=Null Line，Green & Yellow=Protecting Earthing;
3.DC: Red=Voltage Output +10VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
If you have any interest in our products,please feel free to contact us & we are ready to serve you
By continuing to use the site you agree to our privacy policy Terms and Conditions.
