What is a motor capacitor?

The motor capacitor is a part that is commonly found on single -phase electric motors. There are two categories of a motor capacitor: beginning and running. Initial capacitors are used to provide a single -phase engine with the initial pulse to start the engine and leave in the circuit until the engine reaches approximately 75% of its normal running speed. At this point, a centrifugal switch or electronic relay disconnects the capacitor from the circuit. Running capacitors are left in the circuit while the engine operates and is used to increase the engine evaluation. The motor capacitor is generally an electrolytic type and is often easy to identify as a tubular, two lead components mounted on the outside of the engine cover.

Single -phase induction motors achieve their rotation with kind permission of the ever -reversible magnetic field created on the winding of the engine engine alternating current (AC) Power supply. The permanent magnet rotor located inside the stator is forced to "follow" the north/southern orientation of the alternating field, causing it to rotate. Although the rotor is very effective, the rotor must be given to solve it to start rotating when energy is applied for the first time. In the Start Motors capacitors, this pulse is supplied by the initial motor capacitor and the winding that creates distortion in the magnetic field to turn the rotor. Once the engine reaches 75% of its rated speed of the rotary speed, the starting capacitor and windings are disconnected from the motor circuit by a mechanical centrifugal switch or electronic relay.

The

running motor capacitor fulfills a slightly more complex function that includes the engine power bar. Simply put, motor energy factors include the relationship between the theoretical and the actual performance of the device. Leaving the capacitor and the winding in the circuit during normal running allows operate engines with higher energy factors. Known as Cap-Start, Cap-Run Motors have either one capacitor that meets both running and running functions or two separate capacitors. In the case of a separate trigger and starting the engine capacitor, the initial capacitor is still disconnected from the perimeter after starting.

There is one more configuration of a motor capacitor known as a dual running capacitor that is in the category of lowered capacitors. These are often seen in heating, ventilation and air conditioning systems (HVAC), where one capacitor is used to start and operate both fan and compressor motors. These capacitors have three wires, ordinary and one for two engines. In addition to the fact that they are two engines, the principle of the running capacitor remains the same.