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Air Flow Evenly Wall Fan With Ventilating Units For Ld280c-230d3-01
1． Enable the selection of different power levels thus to get the best match of price and performance according to customers’load requirements
2. As the rotor is mounted to interior, the external rotor fan is more compact constructed, smaller and easy to abstract heat., thus ensure to maximum the reliability of fan operation
Over-current limiting circuit protects motor from damage at least for 72 hours
of locked rotor condition at rated voltage.
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.
|3-3||Reverse Polarity Protection||
No damage if the positive and negative leads are reversed under maximum
operation voltage conditions.
|3-4||Over Voltage Protection||
The circuit will be shut down automatically when input voltage over 60VDC.
And re-started when Voltage down to 60VDC below.
In 5 seconds after power on and speed control voltage gets to 1.5V or PWM
duty cycle at 10% above.