What would you like to do?
could be If you lower the start cap size it may take milliseconds longer to start so it will still use the approximate same amt of power. Size? search for "appliance repair parts" enter your model number and you may be able to locate the value of the start cap. go from there.
28 people found this useful
Was this answer useful?
Thanks for the feedback!
Read the motor's wiring diagram to see what colors the motor maker has designated for the 3 connections: "common", "start" and "run".
The colors are red to red, black to black and yellow to yellow.
by reversing the connection of the two windings
Drawing block diagram of single phase capasitor start motor?
Types of Motors There are different types of Capacitor-start motors designed and used in various fields. They are as follows: Single-voltage, externally reversible t…ype, Single-voltage, non-reversible type, Single-voltage reversible and with thermostat type, Single-voltage, non-reversible with magnetic switch type, Two-voltage, non-reversible type, Two-voltage, reversible type, Single-voltage, three-lead reversible type, Single-voltage, instantly-reversible type, Two speed type, and Two-speed with two-capacitor type. These motors can be used for various purposes depending upon the need of the user. The starting, speed/torque characteristics of each of the above motors can be analyzed before employing them in work.
I think the resistance value of starting winding is less than the running winding of the single phase motor
When a capacitor is so introduced, the voltage lags the current by some phase angle. In these motors, the necessary phase difference between the Is and Im is obtained by intro…ducing a capacitor in series with the starter winding. The capacitor used in these motors are of electrolytic type and usually visible as it is mounted outside the motor as a separate unit. During starting, as the capacitor is connected in series with the starter winding, the current through the starter winding Is leads the voltage V, which is applied across the circuit. But the current through the main winding Im, still lags the applied voltage V across the circuit. Thus more the difference between the Is and Im, better the resulting rotating magnetic field.
It should work okay as long as voltage rating is equal to or greater than the capacitor you are replacing.
The start winding needs a capacitor in series with it in order to produce a phase shifted magnetic field that will develop the torque necessary to bring the rotor up to operat…ing speed. Once operating speed it obtained, a centrifugal switch opens and disconnects the start winding - the rotor's inertia can then keep it going as needed.
Unless the motor is designed to be reversed, perhaps by changing some of the wiring, a capacitor start motor cannot be reversed. Consult the nameplate for specifics.
A capacitor builds and holds a charge until required. Larger motors require a temporary boost in electrical power in the start-up phase in order to overcome the inertia of a m…otionless stator. Once the stator begins to spin, the capacitor disengages from the starting circuit. Answer Capacitors are used to provide the starting torque for single-phase induction motors. They do this by causing the current through the starting winding to be out of phase with the current through the main winding, causing the resulting magnetic fields to naturally rotate, cutting the bars of the rotor, and inducing voltages into them. The resulting combination of fields provides the starting torque on the rotor. Once the machine is running, this amount of torque is no longer necessary and the capacitor is disengaged. Further to the original answer, the charge on a capacitor cannot 'build up and hold' when subjected to a.c., and most certainly cannot provide a 'boost' -temporary or otherwise!
Most refrigerators use a single-phase induction motor which needs a capacitor to make it start running in the right direction.
Capacitors come in various sizes, your question is to non specific (capacitor for WHAT) for a detailed answer.
In order for an induction motor to run, a rotating magnetic field must be established. This requires the field windings to be supplied by currents that are out of phase with e…ach other. A capacitor is used to supply make the current through one field winding become out of phase (current leads voltage in a capacitive circuit) with the second.
As an electrician I can give you a vague answer with the information given. You need more specifics to do the calculations for the load amps and the supply voltage. The part…icular motor I looked at is a .6hp fan motor - 4.0 Amps @ 230V (2650 x Full load amps ) divided by supply Voltage = MFDExample 2650 x 4amps = 10600 divided by 230volts = 46 MFD But this is a general statement. The proper cap should be determined by researching the particular model you have.