| Type: | Polypropylene Capacitor |
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| Application: | AC / Motor, Power, Air Conditioner, Fan |
| Packaging Type: | Surface Mount |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
| Safety approvals: | CQC/UL/VDE/TUV/CL |
| Approval standard | GB/T3667,UL810,EN60252 |
| Climatic category | 25/70/21,25/85/21,40/70/21,40/85/21 |
| Rated voltage | 150VAC~600VAC(50-60Hz) |
| Capacitance range | 1uF~80uF |
| Capacitance tolerance | +_5%(J),+_10%(K),+10%(U),-5%(U) |
| Testing voltage | |
| Between terminals | 2*Un(VAC)/5s |
| Between terminals and case | 2*Un+1000(VAC)/5s(>=2000VAC) |
| Insulation Resistance(20ºC) | |
| Between terminals | >=2000MΩ,UF(500VDC,5s) |
| Tangent of loss angle(20ºC) | <=0.002(100Hz) |
| Class of safety protection | S0/S3 |
| Fault Currency | 10,000AFC(UL810) |
| Capacitance(uf) | 250/300VAC | 400-450VAC | ||||
| Cylindrical | Ocal | Cylindrical | Ocal | |||
| D | H | L*W*H | H | D | L*W*H | |
| 10uf | 40 | 55 | 51.5*31.5*65 | 30 | 60 | 51.5*31.5*65 |
| 15uf | 40 | 55 | 51.5*31.5*65 | 35 | 60 | / |
| 20uf | 40 | 65 | 51.5*31.5*65 | 40 | 60 | 51.5*31.5*75 |
| 25uf | 40 | 65 | 51.5*31.5*65 | 40 | 60 | 51.5*31.5*85 |
| 30uf | / | / | / | 40 | 70 | 71.5*45*75 |
| 35uf | 40 | 75 | 71.5*45*75 | 45 | 70 | / |
| 40uf | / | / | / | 45 | 70 | 71.5*45*85 |
| 45uf | 45 | 75 | 71.5*45*75 | 45 | 80 | / |
| 50uf | 45 | 85 | 71.5*45*85 | 45 | 90 | 71.5*45*100 |
| 60uf | 45 | 95 | 71.5*45*100 | 50 | 90 | / |
Dual capacitors come in a variety of sizes, depending on the capacitance (µF or MFD) and the voltage.
The Dual Run AC Capacitor needs to be replaced when the following conditions occur:
What is the role of capacitors for motors?
The common occasion to use capacitor on the general motor is the start of single-phase motor, this capacitor is also called start capacitor, from the circuit principle, it plays the role of phase shifting, because the single-phase motor has only one set of running winding, the rotor is squirrel cage type, single-phase electricity can not produce a rotating magnetic field, need another set of start winding to match, because there is only single-phase 220 volt AC, so the start winding is connected in series with A capacitor, the characteristics of the capacitor is that the voltage can not change abruptly, so it will let the starting coil current ahead of the running coil 90 °, so that two rotating magnetic fields can be formed in space, so that the motor starts normally.
The stator of single-phase motor has two groups, which are 90 degrees apart in space, respectively the starting winding and the running winding, which can obtain the current with 90 degrees difference. Under the phase shifting effect of the starting capacitor, the single-phase electricity will make the current of the starting winding and the running winding differ by 90 degrees phase difference, which produces a rotating magnetic field in the stator space, and the rotor will cut the magnetic lines of force and produce current, which in turn will have a rotating magnetic field, and the stator-rotor magnetic field The stator-rotor magnetic field interacts with each other, and the rotor can rotate continuously.
Some DC motors are also connected in parallel with a capacitor at both ends of the armature, which is mainly used for filtering and anti-interference. Because the DC motor has carbon brushes, carbon brushes and commutation piece will produce spike voltage when broken, capacitor added to release this voltage, of course, there are also some in the carbon brush and ground between the capacitor can also play a similar role.
One use of capacitor for motor is reactive power compensation, the motor is inductive load, the power factor is relatively low after use, the power supply room need to use capacitor to do reactive power compensation. And the long-distance reactive power compensation loss is relatively large, the effect is not too good, so sometimes need to do directly in the vicinity of the motor to start reactive power in situ compensation, such as the following star-delta starting circuit, plus capacitors to complete this function.
In-situ reactive power compensation directly makes the power consumption smaller and the power factor significantly higher, fully enhancing the potential of the grid transmission.
How to distinguish between starting capacitor and running capacitor?
Different state after the motor starts
After the motor starts, the starting capacitor is disconnected by the separation switch, while the running capacitor is involved in operation with the starting coil.
Different capacity
The starting capacitor has a capacity of about 200 microfarads and the running capacitor has a capacity of about 20-30 microfarads.
Different function
The starting capacitor is to let the starting coil of a single motor energize during starting and cut off after starting, while the running capacitor is to let the motor play capacitive compensation during running, the starting capacitor cannot be missing, while the running capacitor can be unnecessary.
For more information about 450vac 45uf Ac Motor Run Capacitor Cbb65 capacitors dual capacitors, we are glad to answer for you.
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