Air Flow Evenly Wall Fan With Ventilating Units For Ld280c-230d3-01
- EC-motors, high level of efficiency
- 100% speed controllable
- Integrated motor protection
- Supplied with mounting bracket
EC technology is intelligent technology; using integral electronic
control which eliminates the slip losses in the motor and ensures
that the motor always runs at optimal load and guarantees that the
proportion of energy utilised effectively is many times higher and
the energy usage considerably lower compared with AC motors.
1． Enable the selection of different power levels thus to get the
best match of price and performance according to customers’load
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
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
operation voltage conditions.
|3-4||Over Voltage Protection|
The circuit will be shut down automatically when input voltage over
And re-started when Voltage down to 60VDC below.
In 5 seconds after power on and speed control voltage gets to 1.5V
duty cycle at 10% above.