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.
280mm EC Backward Curved Centrifugal Fan with Bracket made especially for Petrochemical General Machinery is the PK3N280B4EQM. It performs crucial process steps like forced cooling, gas conveying, negative pressure adsorption, and oil mist extraction in petrochemical machinery, oil and gas plants, refining equipment, steel metallurgical equipment, boiler processing rooms, city gas systems, and pharmaceutical machinery. For a variety of general-purpose equipment systems used in the petrochemical and chemical industries, it offers high static pressure and reliable airflow power. With a high-efficiency EC motor that is directly powered by 380V three-phase AC mains power and has integrated rectifier and inverter modules, the motor efficiency surpasses 90%, which is a 30%–50% improvement over conventional AC asynchronous motors. With its 0~10VDC/PWM dual-mode stepless speed regulation, it saves a substantial amount of energy by accurately modifying the airflow in accordance with the real-time load and cooling needs of petrochemical general-purpose machinery. It effectively overcomes system impedance problems that are frequently encountered in petrochemical equipment, such as filter clogging, lengthy duct resistance, and pipe bends, by using improved aerodynamic design to provide steady airflow even at high static pressure of 1280 Pa.
To satisfy the safety requirements of flammable and explosive gas environments in the petrochemical sector, we may offer ATEX explosion-proof upgrade services (upgrade to Ex d IIB/Ex d IIC explosion-proof construction). Additionally, we provide OEM customization services such silencer accessory adaptations, corrosion-resistant surface treatments, and IP protection improvements (up to IP55). PBM is your source for industrial ventilation and thermal management solutions in addition to being a fan manufacturer.
General Characters
|
1-1 |
Rated Voltage |
380 VAC |
|
1-2 |
Frequency |
50/60 Hz |
|
1-3 |
Operating Voltage |
304~456 VAC |
|
1-4 |
Rated Speed |
3500 RPM |
|
1-5 |
Input Current |
1.9 A |
|
1-6 |
Input Power |
1100 W |
|
1-7 |
Air Flow |
2177.45 CFM / 3700 m³/H |
|
1-8 |
Static Pressure |
5.12 inH₂O / 1280 Pa |
|
1-9 |
Acoustical Noise |
89 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 |
400 mm X 400mm X 328 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Metal |
|
2-3 |
Number of Blades |
8 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
AC (AWG20#), 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 (380VAC/50Hz)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: AC(3×AWG18#)，DC(4×AWG22#)
2.AC: Blue=L1，Brown=L2，Black=L3，Green & Yellow=Protecting Earthing，White=NC，Gray=COM;
3.DC: Red=Voltage Output +10VDC, Yellow=0-10VDC/PWM, White=5 Pulse/R, Blue=GND, Brown=485 RSA, Gray=485 RSB
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