48V EV Charging Station Cooling Fan for Heat Dissipation Model No.:
PA3N250B48H1.General CharactersModel PA3N250B48HRated
Voltage 48 VDC Operating Voltage 36~57 VDC Rated Speed 2750 RPM
Input Current 2.4 A Input Power 115.2 W Air Flow 1900 m3/H Static
Pressure 220 Pa Sound Level 69 dB(A) Protection Type
IP44 2.Mechanical CharactersDimension 250mm X 250mm X
80mm (see dimension drawing)Material of Impeller Cold rolled
steel sheetMounting Position Any Surface of Rotor Coated in black
Bearing System NMB ball bearing Lead WireD1Weight 2500g Package
Standard 3.Environmental CharactersLocked-rotor Protection
Over-current limiting circuit protects motor from damage at least
for 72 hours of locked rotor condition at rated voltage.
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. Reverse Polarity Protection No damage if the positive and
negative leads are reversed under maximum operation voltage
conditions. Over Voltage Protection The circuit will be shut down
automaticlly when input voltage over threshold. And re-started when
Voltage down to threshold below. Soft Start In 5 seconds after
power on and speed control voltage gets to 1.5V or PWM duty cycle
at 10% above. Related Products
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Now Certificate Show:UL / CE / RohsApplication
Scopes:Ventilation & Purification
/ Air Conditioning / Refrigeration
/ IT & Electronic Industry
/ Medical Industry / Heating
/ Automotive Industry
/ Household Electric Appliances
/ Cloud Date Center
/ Mechanical Equipment and Systems.About
PBM:High Quality EC Fan / Competitive Price / Strong Team / Long
Life Expectance / Fast Delivery / Customization Available /
Attentive Service / Professional
AssistanceLaboratory / Packing
Method / Workshop / WarehouseFAQFrequently
Asked QuestionQ: What are electronically commutated
motors?Electronically Commutated motors are brushless DC motors
where the direction of the electric current is switched using
electronic controllers. As the switching of the current is
technically known as 'commutating', brushless motors are also
called 'electronically commutated' motors. EC motors provide the
advantages of brushed DC motors in terms of the ability to have
variable speed control, but without the drawbacks of brushes.Q:
What are the advantages of EC motors?EC motors are very high
efficiency electric motors (80%) and maintain a high efficiency
level at part speed. This means that in most cases they use less
than one third to half of the electricity used by
traditional
induction motors, which in turn translates into lower operating
costs and short payback periods. As EC motors have a higher
efficiency this ensures that the motors run cooler in application
which ensures a longer life for the motor.In terms of speed control
and features, because the motor's operation is controlled by
software, EC motors allow customers to optimize and integrate the
motor, fan and controller with the application, and to include
features like data communications, constant volume control,
variable speed.Features & AdvantagesQ: What about cost?The initial
outlay for an EC motor is more expensive than the traditional
induction / shaded pole motors and this is mainly d
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