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To decrease virtual power and hence increase efficiency
AnswerThere is no such thing as 'virtual power', and power factor has nothing whatsoever to do with 'efficiency'!
Power-factor correction, or power-factor improvement, only applies to large commercial or industrial loads. It does not apply to residential loads.
Power factor correction acts to reduce the supply current to resistive-reactive loads. It has no effect on the load itself, does not reduce its energy consumption, or its efficiency.
By reducing the supply current, the utility company can install cables with lower cross-sectional area, and reduce the amount of copper in its supply equipment -thus reducing its costs. To encourage companies to improve their power factor, electricity tariffs include penalties for low power-factor loads.
What else can I help you with?
How do you calculate capacitor rating for improving power factor?
Power-factor capacitors are rated in reactive volt amperes. To determine the appropriate rating, it is necessary to determine the existing (inductive) reactive power of the load, then determine the amount of (capacitive) reactive power necessary to achieve the desired power factor (it's rarely economical to try and achieve unity power factor), and this will be the necessary reactive power of the capacitor bank.The capacitance of power-factor correction capacitors is not really relevant to the calculation, which is why they are rated in reactive volt amperes, rather than in farads.
How the capacitor valve calculate for a for a load?
I assume that you are asking how to calculate the 'value' of a capacitor? Well, it depends what it is used for. If, for example, it is used to improve the power factor of a load, then it is first necessary to determine what the load's existing reactive power is; then, you need to know what reactive power is necessary with the power factor at its desired value; finally you need to difference between the actual and the desired values of reactive power -and this will be the necessary value for the capacitor. Power factor correction capacitors are rated in reactive volt amperes, not farads.
How does low power factor effects conductor size?
A load with a low power factor draws more load current than necessary, so the supply conductors need to have a greater cross-sectional area than would otherwise be necessary.
What are the adverse effects of poor power factor?
Low power factor means higher than necessary load currents. These require unnecessary expenditure on the amount of copper in supply equipment such as cables, transformers, and switchgear. Higher than necessary load currents also mean greater voltage drops and poorer voltage regulation.
Does a increase in current limit result in increase in electrical consumption?
Not necessarily. If a load has a low power factor, it will be drawing more current than necessary, but its energy consumption will be no different from it having a high power factor.
Power factor correction capacitors?
Yes, they exist. Capacitors are often used to change a low power factor (such as 0.5) to a higher power factor near unity (1). In some instances, this will lower fees and costs to utilities. In homes, this is not really necessary as most devices used in homes are near unity power factor, or tend to be minor/sporadic loads (such as a washing machine).
What is the difference between displacement and true power factor?
'Displacement power factor' is the technically-correct term used to describe the cosine of the phase angle (i.e. the angle by which the load current leads or lags the supply voltage) due to the reactance of a load. Usually, when we talk about the 'power factor' of a load, we mean 'displacement power factor'.However, another type of power factor can exist in a circuit, due to the presence of harmonics in the current waveform, due to non-linear loads such as SCR rectifiers. This type of power factor is temed 'distortion power factor', and may be corrected using filters.So, the terms 'displacement' and 'distortion' are used whenever it is necessary to clarify these different types of power factor.
Is Poor power factor causes overload on alternator transformer and distribution lines?
yes it is true gal or boy what everAnother AnswerPoor power factor doesn't necessarily cause an 'overload' (transmission/distribution systems are designed to cope), but it is certainly responsible for a load drawing more current than necessary. This is because a load with a poor (low) power factor draws more current than is necessary to supply the same amount of energy.
What is the power of a factor?
power factor means kw/kva
How do you find power input with given power factor and power output?
Output Power divided by Power Factor.
What are the advantages and disadvantages of unity power factor?
There is no disadvantage of unity power factor, because at unity power factor all the electrical power is efficiently utilized by the the load, and at lagging power factor some power is lost in the load's magneticfield.
What mean power factor 0.26 lead?
When looking at power factor, it is the ratio of watts (true power) to VA. The power factor is how we measure power systems. A person with a low power factor like .26 will have a higher electricity bill.
