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Capacitor

UK
/kəˈpæs.ɪ.tər/
US
/kəˈpæs.ə.t̬ɚ/

Capacitor The motor run capacitor uses the charge in its dielectric to boost current, therefore generate power to the motors, while a motor is operating. They improve the motor running performance by continuously providing additional torque.
In air conditioner units, there are basically two run capacitors: one capacitor provides power to the fan motor; the another run capacitor provides power to the compressor.
When replacing a run capacitor, it's important to match the shape (round, oval, or rectangle) and the microfarad rating, voltage, and dimensions. Run capacitors are typically used with medium to high torque applications such as air conditioners, compressors, etc.

Motor run capacitor

  • Model CBB65-1 motor run capacitor
    CBB65-1
    FEATURES:
    Explosion - proof design
    Rated frequency: 50/60Hz
    Quick connect terminals
    Round metal housing
    Capacitance tolerance: 土5%
    Working temp.: -40°C to +70°℃
    Cap.uF 240V-300V 350V-400V 440V-450V
    Diam.mm Height mm Diam.mm Height mm Diam.mm Height mm
    2 40 55 40 55 40 55
    3 40 55 40 55 40 55
    4 40 55 40 55 40 55
    5 40 55 40 55 40 55
    7.5 40 55 40 65 40 65
    10 40 55 40 55 40 65
    12.5 40 55 40 65 40 75
    15 40 55 40 65 40 75
    17.5 40 65 40 75 40 75
    20 40 75 45 75 50 65
    25 40 75 45 85 50 75
    30 45 75 50 75 50 85
    35 45 75 50 75 50 85
    40 45 85 50 85 50 100
    45 45 100 50 100 50 110
    50 45 100 50 100 50 110
    55 50 90 50 110 50 125
    60 50 100 50 125 50 125
    65 50 110 50 125 55 110
    70 50 125 55 110 55 125
    80 50 125 55 125 60 125
    100 55 125 60 125 60 140
  • Model CBB65-A motor run capacitor
    CBB65-A
    FEATURES:
    Explosion - proof design
    Rated frequency: 50/60Hz
    Quick connect terminals
    Round metal housing
    Capacitance tolerance: 土5%
    Working temp.: -40°C to +70°℃
    Cap.uF 370V 440V
    Diam.mm Height mm Diam.mm Height mm
    15+1.5 50 65 50 75
    20+1.5 50 75 50 85
    25+3 50 75 50 85
    30+5 50 85 50 95
    35+5 50 95 50 105
    40+5 50 105 50 120
    45+5 50 105 50 120
    45+7.5 50 120 50 125
    50+5 50 120 50 125
    50+6 50 120 50 125
    50+7.5 50 120 50 125
    55+7.5 50 125 55 125
    60+7.5 50 125 55 125
    65+7.5 55 125 60 120
    70+7.5 55 125 60 125
    80+10 60 125 60 135
  • Model CBB65-2 motor run capacitor
    CBB65-2
    FEATURES:
    Explosion - proof design
    Rated frequency: 50/60Hz
    Quick connect terminals
    Oval metal housing
    Capacitance tolerance: 土5%
    Working temp.: -40°C to +70°C
    Cap.μF 350V-400V 440V-450V
    Depth.mm Width mm Height mm Depth.mm Width mm Height mm
    5 31.5 51.5 55 31.5 51.5 55
    10 31.5 51.5 55 31.5 51.5 65
    15 31.5 51.5 65 31.5 51.5 75
    20 31.5 51.5 75 31.5 51.5 85
    25 45 71 55 45 71 65
    30 45 71 65 45 71 75
    35 45 71 75 45 71 85
    40 45 71 85 45 71 90
    45 45 71 90 45 71 100
    50 45 71 90 45 71 100
    60 45 71 100 45 71 110
    70 45 71 110 45 71 125
    80 45 71 110 48 90 100
    100 45 71 125 48 90 125
  • Model CBB65-B motor run capacitor
    CBB65-B
    FEATURES:
    Explosion - proof design
    Rated frequency: 50/60Hz
    Quick connect terminals
    Oval metal housing
    Capacitance tolerance: 土5%
    Working temp.: -40°C to +70°℃
    Cap.μF 370V 440V
    Depth.mm Width mm Height mm Depth.mm Width mm Height mm
    20+1.5 45 71 65 45 71 65
    25+1.5 45 71 65 45 71 75
    30+3 45 71 75 45 71 85
    35+5 45 71 85 45 71 90
    40+5 45 71 85 45 71 100
    45+5 45 71 90 45 71 100
    45+7.5 45 71 90 45 71 110
    50+5 45 71 100 45 71 120
    50+7.5 45 71 110 45 71 125
    60+5 45 71 120 45 71 125
    60+7.5 45 71 120 48 90 100
    65+7.5 48 90 100 48 90 100
    70+7.5 48 90 100 48 90 110
    80+10 48 90 110 48 90 125

Start capacitor

Start capacitors contain higher capacitance than motor run capacitors, they are normally applied in the circuit of start windings when the motor is starting.
Start capacitors temporarily store an electrical charge to deliver extra torque during motor startup, they provide an immediate electrical push to get the motor rotation started. They exit the circuit once the motor reaches its operating speed. Without a start capacitor when the voltage is applied, the motor would just hum. The start capacitor creates a current to voltage lag in the separate start windings of the motor. The current builds up slowly, and the armature has an opportunity to begin rotating with the field of current.
When replacing a start capacitor, it's important to match the microfarad rating, voltage, and dimensions. Start capacitors typically used with motors that power fans, blowers, and pumps.

  • Model CD60 start capacitor
    CD60
    The CD60 series motor start capacitors are designed for the useof AC motor starting and otherintermittent applications.
    Cap.uF 110V-125V 200V-220V 300V-330V
    Diam.mm Height mm Diam.mm Height mm Diam.mm Height mm
    43-53 36.5 70 36.5 70 46 86
    64-72 36.5 70 36.5 86 46 86
    72-88 36.5 70 36.5 86 46 86
    88-108 36.5 70 46 86 46 86
    108-130 36.5 70 46 86 46 86
    124-149 36.5 70 46 86 46 86
    130-156 36.5 70 46 86 46 111
    161-193 36.5 70 46 86 46 111
    189-227 36.5 70 46 86 52 111
    216-259 36.5 70 46 86 52 111
    233-280 36.5 70 46 86 52 111
    243-292 36.5 70 46 86 52 111
    270-324 36.5 70 46 111 52 111
    324-388 36.5 86 46 111 52 111
    340-408 36.5 86 46 111 52 111
    378-454 36.5 86 46 111 52 111
    404-480 36.5 86 46 111 52 111
    430-516 36.5 86 46 111 52 111
    540-648 46 86 52 111 65 111
    590-708 46 86 52 111 65 111
    708-850 46 111 52 111 65 111
    829-915 46 111 52 111 65 111
    1000-1200 52 111 65 111 65 111
  • Hard start kit
    Hard start kit
    FEATURES:
    For all PSC AC units from 4000thru 12000 BTU's (1/2 HP thru 10HP)
    Can be used on 115 - 288 VAC
    Easy 2-wire installation
    Model Operating Voltage Application Torque Increase
    SPP5 115-288VAC 1/2 to 10 HP 300%
    SPP6 115-288 VAC 1/2 to 10 HP 500%
    SPP8 115-288 VAC 1/2 to 10 HP 600%

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Bengt Karlsson
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Thank you for providing the information about capacitors. It is highly informative and greatly appreciated.
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Calogero
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Thank you for providing such a wealth of content on capacitors. The tabular information you shared is precisely what I was looking for.
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Tim Wikblad
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The content on this page is amazing, and I really like it. The information on capacitors has been a great help to my work.

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