Q:

What is a run capacitor?

A:

Quick Answer

A run capacitor is an electrical capacitor that energizes the auxiliary coil of an alternating current electronic motor, creating a rotating magnetic field while the motor runs. Run capacitors are sometimes used in single phase AC motors, and they typically have a voltage range of 370V to 440V.

  Know More

Full Answer

Unlike start capacitors, run capacitors are designed to keep the auxiliary coil powered during the motor startup phase as well as during normal operation. As a result of this, the capacitance of a run capacitor is typically set lower than that of the start capacitor. Replacing a run capacitor should be done with care. Choosing the wrong capacitance value may lead to an unsteady magnetic field, which in turn may lead to increased energy consumption, drop in performance and additional noise. Installing the wrong run capacitor may also cause the motor to overheat.

Run capacitors are sometimes used in washing machines, air conditioners, dishwashers and tumble dryers. When testing a capacitor, most technicians rely on digital or analog multimeters. The unit's capacitance can be measured by placing the probes across both its terminals. In addition to a loss in performance, faulty capacitors may reveal themselves with physical signs such as leaky oil or a bulgy side.

Learn more about Car Parts & Maintenance

Related Questions

  • Q:

    Does Maaco run paint specials?

    A:

    As of 2015, Maaco does run paint specials. Some of the more common specials a person can expect are seasonal sales events and discounts for people such as veterans when they present their appropriate IDs during certain holidays, such as Memorial Day.

    Full Answer >
  • Q:

    Why do car batteries run out?

    A:

    Car batteries run out for several reasons: some die of old age, while others run out of power due to problems in the vehicle electrical system or lose power when drivers leave lights on, doors open, and the radio on when the car is not moving. Some car battery failures result from driver error while others stem from problems with the cars themselves. Climate affects battery longevity and operation too; batteries in cold, snowy climates might last less than 3 years.

    Full Answer >
  • Q:

    Can a car run without a thermostat?

    A:

    A car can run without a thermostat. However, operating a vehicle without a thermostat may result in serious engine damage caused by the engine operating at too high a temperature.

    Full Answer >
  • Q:

    How do you convert gas cars to run on electricity?

    A:

    Converting a conventional gasoline vehicle to electric power requires the removal of the car's combustion engine and fuel system and installation of batteries and an electric motor. Vehicles with manual transmissions are most suitable for conversion due to the ease of mating the electric motor with the existing transmission.

    Full Answer >

Explore