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Can you change a 440 volt 12.5 uF start capacitor with a 370 volt 12.5uF run capacitor?
Wiki User
∙ 14y ago
There are two ways to read this: you have a burned-out run capacitor on your motor and a good start capacitor in your parts box, and you have a burned-out start capacitor and a good run capacitor. If the run capacitor's bad and you want to put the higher-voltage start cap in its place, the answer is yes. This is called derating, and the only thing it does for you is increases the lifespan of the capacitor because you're not working it as hard as it can take. If the start capacitor's bad, don't do this--they used a 440-volt capacitor in there for a reason.
Wiki User
∙ 14y ago
Wiki User
∙ 10y agoNo, the motor is designed to operate on a certain capacitance for starting and it must remain in that range to start the motor.
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Why does a 230volt motor have a 110 volt capacitor?
Because the capacitor only needs to "excite" one of the two phases of the 230 volt supply in order to start the motor.
What the the correct size capacitor for a three quarter horsepower 110 volt motor?
110v 40 uf
My motor is 220volt single phase what voltage should the starting capacitor be The capacitor that is in it is only rated at 125 volt 500 MFD This is a 2 HP motor?
The voltage rating for a start capacitor must be at equal to the motors line voltage or greater.The formula used to find the value of a motor starting capacitor is 2650 X FLA/VAC = mfd.See related link below, page 462 to 465 for full details about motor capacitors
If a 0.40-uF capacitor is connected to a 9.0-V battery how much charge is on each plate of the capacitor?
The units of capacitance are called farads. A one farad capacitor is a capacitor with 1 volt potential difference with 1 coulomb of charge on the capacitor, C = Q/V or Q=CV So the charge held on your capacitor is Q = CV = 9Volts * 0.40*10-6Farads=3.6*10-6 Coulombs
How do you connect a single phase capacitor start induction motor forward?
This is for a single voltage motor. If you consider the forward rotation as counter clockwise (CCW) when looking at the motor from the end opposite the drive end, then the connections will be, L1 - terminals 1 and 8, L2 - terminals 4 and 5. To reverse the rotation (CW), then the connections will be, L1 - terminals 1 and 5, L2 - 4 and 8.
Why does a 230volt motor have a 110 volt capacitor?
Because the capacitor only needs to "excite" one of the two phases of the 230 volt supply in order to start the motor.
Is a 50 volt 68uf capacitor the same as a 50 volt 680nf capacitor?
No they are not equal680nf = 0.68uf
Can a 440 volt capacitor be used for a 230 volt application?
No. The capacitor will short out and possibly explode. On the other hand, the 440 Volt Cap can be used in a 220 Volt circuit.
What happen if you replace a 6.3 volt capacitor with a 10 volt capacitor?
Nothing will happen, you can go over 6.3v but never under......
What will happen if two terminals of capacitor are shorted?
When the terminals of a capacitor are connected together, the capacitor will discharge, returning to a zero potential state. Capacitors resist voltage change, meaning that if the capacitor is in a circuit that has zero voltage potential, the capacitor will eventually achieve zero potential. If the capacitor is in a circuit that has a 5 volt potential, the capacitor will seek and attempt to maintain that 5 volt potential (provided that the capacitor is rated at 5 volts or more). In an AC circuit, the capacitor will tend to smooth out the sin wave of the current, resisting change in both directions. In a DC power supply circuit, a capacitor will tend to reduce the voltage "ripple", and if the circuit is designed properly, will provide a smooth DC voltage. Shorting the terminals of a capacitor is effectively what often happens in many circuits; it's not a problem.
What type of capacitor use to stabilize a 12 volt car when the voltage drops and how to wire?
"What type of capacitor use to stabilize a 12 volt car when the voltage drops and how to wire?"
What does the volt on a capacitor mean?
the voltage number on the capacitor indicates that the capacitor can with stand to that particular voltage across it.generally during design, the value of capacitor will be selected in such a way that this voltage rating should be double than what really we get in the circuit
Why capacitor can be defined in kvar?
Capacitors designed to be used for power-factor correction are rated in reactive volt amperes, rather than in farads.The reason for this is that in order to determine the necessary correction, a load's existing reactive volt amperes is first calculated, then the reactive volt amperes of the capacitor must be determined in order to achieve the required value of power factor. In other words, the capacitance (in farads) of the capacitor is irrelevant to the calculation.
Why 440 volts running capacitor if my ac is 230 volts?
The 440 volts listed on the cap is the maximum allowable voltage the capacitor can handle. You could actually use a 370 volt cap on 230 volts. ANSWER; 230 volts AC can it actually be 644 volts peak to peak . It is 44ov because it must be rectified and sees only 324 volt peak which is withing the 440 volt capacitor handling voltage
How can be determined the rating of capacitor bank?
If you are talking about a capacitor bank used for power-factor improvement, then it is rated in reactive volt amperes (var). Otherwise, it is rated in farads (F).
What the the correct size capacitor for a three quarter horsepower 110 volt motor?
110v 40 uf
Unit of capacitor is?
The SI unit of capacitance is the farad. 1 farad is 1 coulomb per volt.
