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Will the improvement of power factor will increase the efficiency?
Wiki User
∙ 12y ago
Efficiency is defined as the ratio between the output power and the input power of a machine, expressed as a per unit or percentage.
Power factor improvement has absolutely no effect on the behaviour of a load. All it does is to reduce the magnitude of the load current. A reduction in load current means that less copper can be used in the supply of energy to the load. However, it doesn't effect either the output or input power of the load. So the answer is no, power factor has no effect on the efficiency of a load.
You could argue, however, that if improving the power factor of a load reduces the supply current, leading to lower line losses, then there is an improvement in the efficiency of the supply system.
Wiki User
∙ 12y ago
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What is PFI panel?
Power Factor Improvement Panel. It controls power factor
How do you connect the capacitor bank in electrical system?
improvement of power factor
What is the efficiency of power transformer at same load at 0.9 lead and 0.9 lag power factor?
Same
Can i reduce electric bill by improving power-factor?
For a residential consumer, power-factor improvement has absolutely no effect on one's electricity bill. Adding power-factor improvement capacitors at the point of supply will have absolutely no effect upon the operation of the load circuits, but it may act to reduce the supply current. But reducing the supply current will not reduce one's energy consumption.
If we increase the current then what about the power factor?
The power factor depends on the phase angle between the voltage and current on a conductor. The amplitude of the current has no effect on it.
How do you hook up capacitors for power factor correction?
The voltage across a purely inductive load leads the current by 90 degrees.Because of this 90 degree offset the power transfer is inefficient because the current and voltage peaks are never aligned.P = I * ETherefore a capacitor with an reactance equivalent in magnitude but opposite in polarity to that of the inductive load at the operating frequency can be placed in parallel with the load to maximize power transfer.CommentPower-factor improvement does not improve, or increase the efficiency of, power transfer. The power of a load is exactly the same after power-factor improvement as it was before power-factor improvement. All that power-factor improvement does is to reduce the amount of load current.
What equipment used in power factor improvement?
The simplest method of power-factor improvement is by using appropriate capacitors, connected in parallel with the load. Power-factor improvement capacitors are rated in reactive volt amperes, not farads.
What is PFI panel?
Power Factor Improvement Panel. It controls power factor
How will an increase in amplitude and power affect dB?
The decibel (dB) scale is logarithmic. An increase of power by a factor of 10 is an increase of +10 dB. If power increases by a factor of 100, that is equivalent to +20 dB.The decibel (dB) scale is logarithmic. An increase of power by a factor of 10 is an increase of +10 dB. If power increases by a factor of 100, that is equivalent to +20 dB.The decibel (dB) scale is logarithmic. An increase of power by a factor of 10 is an increase of +10 dB. If power increases by a factor of 100, that is equivalent to +20 dB.The decibel (dB) scale is logarithmic. An increase of power by a factor of 10 is an increase of +10 dB. If power increases by a factor of 100, that is equivalent to +20 dB.
When efficiency is at 100 percent it is known as what with power factor?
"Unity"
Why is it necessary to have power factor correnction?
To decrease virtual power and hence increase efficiencyAnswerThere 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.
How do you connect the capacitor bank in electrical system?
improvement of power factor
Power factor improvement of induction motor?
Check at http://electrical-engineers.blogspot.com
What is the efficiency of power transformer at same load at 0.9 lead and 0.9 lag power factor?
Same
Why current increases with decrease in power factor?
It's easier to answer you question the other way around, that is "Why does the load current fall with an increase in power factor?"Before power-factor improvement, the load current is the phasor (or vector) sum of the load's resistive (IR) and inductive currents (IL).Power-factor improvement is achieved by adding a capacitor in parallel to the load so, after power-factor improvement, the load current becomes the phasor sum of the resistive current (IR), inductive current (IL), and the capacitive current (IC).Since the inductive current and capacitive current are displaced from each other by 180 degrees (i.e. are in antiphase), the the phasor sum of IR + IL +IC will be smaller than the phasor sum of just IR and IL.Hence, the supply current reduces as the power factor improves.
Do capacitor devices actually save power?
Your question should read, "Do capacitive devices actually save energy?" Power is simply the rate at which you use energy, so you cannot 'save' power. And the answer to your question is no.Capacitor banks are used to improve the power factor of industrial loads. Power-factor improvement acts to reduce the load current, thus reducing the amount of copper required in the supply system conductors, transformers, etc. Power-factor improvement, on the other hand, has no effect upon the operation of the load. The energy used by the load after power-factor improvement is exactly the same as it was before.Power-factor improvement only really applies to industrial loads, because utility companies will financially penalise industrial consumers who allow their power factor to fall below an agreed figure. Power-factor improvement will have absolutely no effect whatsoever on residential loads, so companies trying to sell you 'capacitor devices' that promise to 'save you money' are scam merchants!
What are advantages of high power factor?
Power factor ranges from zero to a maximum of 1. At 1 the current and voltage waveforms are in phase and operate at maximum efficiency.
