Motor Start Capacitors are commonly used in single-phase mofors to boost the value of their starting forque. It is necessary that the start should take in a small fraction of time (seconds) with the input of a high reactive power.
Due to its advantages like size and high capacitance value, the motor start capacitor is the best capacitor for this type of application. Once the mofor has been started, the capacitor should be disconnected from the circuit. The capacitor elements are made out of aluminum foil separated by layers of impregnated paper.
Capacifors shall be capable of releasing any excessive internal pressure without violent expulsion of capacitor element or cover or emission of flame,when rated AC RMS voltage 60 Hz is applied continuously to a capacitor.
Care should be taken to shield the capacitor from observers to prevent injury.
Capacitors shall be capable of withstanding life test conditions per ElA 463-B in a 65*C ambient at rated sinusoidal voltage and frequency with current Imiting and discharge resistors.
A resistance equivalent to approximately 10% of the capacitor impedance shall be connected in series with each capacitor and a resistor of approximately 1000 ohms shall be connected in parallel with each capacitor.
Life fest shall be conducted in a test chamber with capacitors separated by at least I inch of air and with sufficient circulation so that the ambient temperature remains within the above temperature limits and does not vary more than I'C. Also, capacitors shall not be exposed to direct radiation from heating elements. Test voltage is applied to the capacitor resistor combination. At the conclusion of the life test, at room femperature, the capacitance shall not differ from the initial measured value by more than +25% and the power factor shall not exceed 20%.
| Capacitance Range | 25~1536MFD |
| Voltage Ratings | 110, 125, 165, 220, 250, 330VAC |
| Capacitance Tolerance | -0~+20% |
| Rated Frequency | 50/60 Hz |
| Operating Temperature | -20+65%C max, 70°C Upon request |
| Power Factor | 8% |
Case: Phenolic or Thermoplastic case with a positive pressure safety vent.
Terminals: Designed to accept 1/4" ; single,
double and triple quick female connectors with solder lug option.
Marking: Manufacturer identilication, capacitance range, rated voltage, working frequency,
maximum operating temperature, manufacture week; year, and UL marking.
(Special marking available on request.)
| D | 37Ø | 40Ø | 46Ø | 51Ø |
| L | 70mm | 80mm | 86mm - 106mm | 100mm- 116mm |
| F | 11 | 11 | 15 | 15 |
| H max | 2 | 2 | 0.5 | 1 |
| VOLTAGE | 110V | 125V | 165V | 220V | 250V | 330V |
| CAPACITANCE VALUE | size m/m | size m/m | size m/m | size m/m | size m/m | size m/m |
| 25 - 30 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 |
| 30 - 36 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 |
| 36 - 43 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 |
| 43 - 52 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 |
| 53 - 64 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 |
| 64 - 77 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 |
| 72 - 86 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 |
| 88 - 106 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 | 46 x 86 |
| 108 - 130 | 37 x 70 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 | 46 x 86 |
| 124 - 149 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 |
| 130 - 156 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 |
| 145 - 174 | 37 x 70 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 |
| 161 - 193 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 40 x 106 |
| 189 - 227 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 51 x 116 |
| 216 - 259 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 46 x 86 | 51 x 116 |
| 233 - 280 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 46 x 86 | 51 x 116 |
| 243 - 292 | 40 x 80 | 40 x 80 | 46 x 86 | 46 x 86 | 46 x 86 | 51 x 116 |
| 270 - 324 | 40 x 80 | 46 x 86 | 46 x 86 | 46 x 86 | 40 x 106 | 51 x 116 |
| 324 - 389 | 40 x 80 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 |
| 340 - 408 | 46 x 86 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 |
| 378 - 454 | 46 x 86 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | |
| 400 - 480 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 40 x 106 | |
| 430 - 516 | 46 x 86 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | |
| 460 - 552 | 46 x 86 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | |
| 540 - 648 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | |
| 590 - 708 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | 40 x 106 | |
| 645 - 774 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 708 - 850 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 720 - 864 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 800 - 960 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 815 - 978 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 829 - 995 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 850 - 1020 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 1000 - 1200 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 1020 - 1224 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 1175 - 1410 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | 51 x 116 | |
| 1280 - 1536 | 40 x 106 | 51 x 116 | 51 x 116 | 51 x 116 | 51 x 116 |
| VOLTAGE | 110V | 125V | 165V | 220V | 250V | 330V |
| CAPACITANCE VALUE | size m/m | size m/m | size m/m | size m/m | size m/m | size m/m |
| 25 - 30 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 80 | 40 x 80 |
| 30 - 36 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 80 | 40 x 80 |
| 36 - 43 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 80 | 40 x 80 |
| 43 - 52 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 80 | 40 x 80 |
| 47 - 56 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 80 | 40 x 80 |
| 53 - 64 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 46 x 86 |
| 64 - 77 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 40 x 106 |
| 72 - 86 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 40 x 106 |
| 88 - 106 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 40 x 106 |
| 108 - 130 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 40 x 106 |
| 124 - 149 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 40 x 106 |
| 130 - 156 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 40 x 106 |
| 145 - 174 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 51 x 116 |
| 161 - 193 | 37 x 70 | 37 x 70 | 40 x 80 | 40 x 80 | 40 x 106 | 51 x 116 |
| 189 - 227 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 40 x 106 | 51 x 116 |
| 216 - 259 | 37 x 70 | 40 x 80 | 40 x 80 | 46 x 86 | 40 x 106 | 51 x 116 |
| 233 - 280 | 37 x 70 | 40 x 80 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 |
| 243 - 292 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 |
| 270 - 324 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 |
| 324 - 389 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 | |
| 340 - 408 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 | |
| 378 - 454 | 46 x 86 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 | |
| 400 - 480 | 46 x 86 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 430 - 516 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 460 - 552 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 540 - 648 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | 51 x 116 | |
| 590 - 708 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | ||
| 645 - 774 | 40 x 106 | 40 x 106 | 40 x 106 | 51 x 116 | ||
| 708 - 850 | 40 x 106 | 40 x 106 | 40 x 106 | |||
| 720 - 864 | 40 x 106 | 40 x 106 | 40 x 106 | |||
| 800 - 960 | 40 x 106 | 40 x 106 | 51 x 116 | |||
| 815 - 978 | 40 x 106 | 40 x 106 | 51 x 116 | |||
| 829 - 995 | 40 x 106 | 40 x 106 | 51 x 116 | |||
| 850 - 1020 | 40 x 106 | 51 x 116 | 51 x 116 | |||
| 1000 - 1200 | 40 x 106 | 51 x 116 | 51 x 116 | |||
| 1020 - 1224 | 51 x 116 | 51 x 116 | ||||
| 1175 - 1410 | 51 x 116 | 51 x 116 | ||||
| 1280 - 1536 | 51 x 116 | 51 x 116 |
ㆍAbove case dimensions are based on our standard design and might be altered without notice.
ㆍ Requirements of special specifications can be designed at request.