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Difference between real and reactive power?
real =VIcosO reactive = VI sino
Is reactive power greater than true power?
Use a wattmeter, as it only reads 'real power' of your load. Use an ammeter and a voltmeter, and the product of the two readings will give you 'apparent power' of your load. Since apparent power is the vector sum of real power and reactive power, use the following equation to find the reactive power of your load: (reactive power)2 = (apparent power)2 - (real power)2
Why VAR meter does not measure real and apparent power?
A VAr meter only measures the reactive (imaginary) power. Apparent power is a combination of real and reactive power; thus having a VAr meter will not suffice to measure apparent power. Likewise, because the VAr meter only measures reactive power, it does not provide any information on real power.
What is real power in electricity?
real power is to do do work and it is supplied to the load ,where as the reactive power is used for magnetising and the apparent power is the total power
What is commercial power factor?
Electrical inductive motors, transformers and magnetic ballasts bring real power that are measured in kilowats and reactive power (measured in kilovolt-amperes reactive, kvar). Real power genrates "productive" work. Reactive power does the the magnetic field required for inductive devices to operate.
Is mvar can used to measure mva?
No, mvar (megavolt-ampere reactive) is a unit of apparent power while MVA (megavolt-ampere) is a unit of real power. Mvar is used to measure reactive power, while MVA is used to measure total power (both real and reactive).
What is reactive power and why you call like this and what are disadvantage of this power?
Reactive power is a result of capacitance or inductance, which are reactive elements. This is power that is not useful for doing work - these reactive elements hold power, then release it during each half cycle of the AC waveform. This causes a phase shift from the real power. The main disadvantage is it's not useful for doing work, and you have to size equipment for it anyway. This is why much electrical equipment is rated in KVA, which is the vector sum of real power and reactive power, instead of kW.
Power factor formula?
Power factor is defined as the ratio of real power over total power. Total power is the vector sum of real and reactive power.
Is the kilowatt apparent power?
According to Wikipedia, all forms of power can be expressed in Watts, but typically one expresses only REAL Power in Watts (& Kilowatts).The standard is to express Apparent Power in Volt-Amperes (VA) (& KVA).The kilowatt is the unit of measure for true power; apparent power is measured in volt amperes.However, the volt ampere and the reactive volt ampere (for reactive power) are traditional units, used to help differentiate between apparent, true, and reactive power. SI recognises the watt as the unit for each.
What does 193 kva set mean?
KVA is an acronym for killo volt - amperes. It is a measure of power (both real and reactive) defined as P = Vrms * Irms. If there is a power factor associated with this, it can be used to separate the real and reactive power:P(real) = Vrms * Irms * pfP(reactive) = Vrms * Irms * (1 - pf)
Is it possible for an energized circuit at 240 volts and 100 amps but no power?
Yes if you are referring to no real power, no if you are saying no power (real or reactive). You could have 100A flow from a capacitor bank or inductor bank, which should consume no real power, but provide voltage support / pull down when on line by introducing reactive power to the system.
What is the difference between voltamp and watt, and how do they relate to each other in terms of measuring electrical power?
A voltamp is a unit of apparent power, which is the combination of voltage and current in an electrical circuit. A watt, on the other hand, is a unit of real power, which is the actual power consumed by a device. The relationship between voltamps and watts is that in an ideal circuit with no reactive components, the apparent power (voltamps) is equal to the real power (watts). However, in real-world circuits with reactive components like inductors and capacitors, the apparent power can be greater than the real power due to the presence of reactive power.
