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Fan Capacitor

Fan Capacitor

 

How do the fan capacitor work?

The most common motor used in a normal household electric fan is a single-phase induction motor. When first switched on such a motor needs to use a “starter” winding, in addition to its main winding, so that a rotating magnetic field is created to make the motor’s rotor start to turn.

However a starter winding cannot do the job on its own, it needs a “Start-And-Run Capacitor” in series with the starter winding to create a rotating magnetic field. Without one of those capacitors the motor would never start to turn. How do the fan capacitor work

Most ceiling fans use a type of motor known as a “permanent split capacitor motor“. These motors have two coils, a “start” and a “run” winding. A capacitor is connected in series with the start winding to insert a phase shift, but once the motor is up to speed it becomes an auxiliary winding. In order to reverse the motor, the fan capacitor is applied to the “run” winding which then becomes the “start” winding. In some cases the windings may have taps to provide different speeds, in others the value of the start/run capacitor is lowered to provide lower speeds. Yet other designs will have additional capacitors wired in series with the motor as a whole to regulate speeds.
 

Feature:

1. small case, small dissipation factor, small in heterent temperature rise.
2. Fan Capacitor High insulation resistance.
3. Good self-healing characteristic.
4. Very good pressure resistance function.
5. Fan capacitor Broadly applied to starting and running of AC single-phase motors at 50Hz(60Hz) frequency for AC fan, Ceiling Fan, centrifugal fan, cooling fan, axial fan, tube axial fan, centrifugal blower, fan guard, cross flow, industrial fans etc.
 

Specification:

Rated capacitance 1µF ~ 30µF
Tolerance ± 5%
Rated voltage 110VAC ~ 630VAC
Rated frequency 50/60Hz
Maximum permissible voltage Vmax 1.1 x VR (VR=Rated voltage)
Maximum permissible current Imax 1.3 x IR (IR=Rated current)
AC test voltage terminal to terminal 2 x VR, 2s (routine test)
2 x VR, 60s (type test)
Dissipation factor tan δ ≤0.002 (50Hz)
Climate types 40/85/21, 25/70/21
Reference standards IEC 60252-1

 
Ⅰ: Fan Capacitor Box type flexible wire

Fan Capacitor Box type flexible wire

Ⅱ: Fan Capacitor Box type quick connect terminal

Fan Capacitor Box type quick connect terminal
 

Dimensions:

Capacitance
400 VAC – 450VAC
250 VAC –300VAC
L
(mm)
L
(inch)
W
(mm)
W
(inch)
H
(mm)
H
(inch)
L
(mm)
L
(inch)
W
(mm)
W
(inch)
H
(mm)
H
(inch)
1μF
37
1.46″
15
0.59″
26
1.02″
37
1.46″
15
0.59″
26
1.02″
1.5μF
37
1.46″
15
0.59″
26
1.02″
37
1.46″
15
0.59″
26
1.02″
2μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
2.5μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
3μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
3.5μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
4μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
4.5μF
47
1.85″
18
0.71″
34
1.34″
37
1.46″
15
0.59″
26
1.02″
5μF
47
1.85″
18
0.71″
34
1.34″
47
1.85″
18
0.71″
34
1.34″
6μF
47
1.85″
18
0.71″
34
1.34″
47
1.85″
18
0.71″
34
1.34″
7μF
47
1.85″
18
0.71″
34
1.34″
47
1.85″
18
0.71″
34
1.34″
8μF
50
1.97″
23
0.91″
40
1.57″
47
1.85″
18
0.71″
34
1.34″
10μF
48
1.89″
28
1.10″
34
1.34″
50
1.97″
23
0.91″
40
1.57″
12μF
48
1.89″
28
1.10″
34
1.34″
50
1.97″
23
0.91″
40
1.57″
15μF
60
2.36″
28
1.10″
42
1.65″
50
1.97″
23
0.91″
40
1.57″
18μF
48
1.89″
28
1.10″
34
1.34″
48
1.89″
28
1.10″
34
1.34″
20μF
60
2.36″
38
1.50″
50
1.97″
48
1.89″
28
1.10″
34
1.34″
25μF
60
2.36″
38
1.50″
50
1.97″
60
2.36″
38
1.50″
50
1.97″
30μF
60
2.36″
38
1.50″
50
1.97″
60
2.36″
38
1.50″
50
1.97″

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