# How to convert kw into kva?

# What is the formula to convert kW or kVA into AC amperes?

Some confusion here KW and KVA are units of power. The ampere is a unit of current. If you divide power by the voltage involved, you can determine the current involved, in a…mps. Power (watts) = volts x amps A volt-amp is a watt. (A volt times an amp is a watt.) .
I=(KVA*1000)/(1.732*V) (Three Phase).
AMP=KW/1000*V*PF -------------------------------------------------------------------------------------------------------------- KW or KVA can be converted to one another but you cannot convert them to amps. You can compute amps by using this formula, KW = I x V x 1.732 x P.F/1000 (Three phase) KVA = I x V x 1.732/1000 (Three phase)

# How do you convert kw to kva?

kVA = kW divided by (power factor). The power factor is the cosine of the angle between voltage and current.

# Convert 20 kva to kw?

Your question cannot be answered, unless the power factor of the load is specified. Since true power (measured in watts ) is the product of apparent power (measured i…n volt amperes ) and the power factor of the load. So, given your figure of an apparent power of 20 kV . A ( not 'kva'*), the corresponding value of true power could (theoretically!) range from .
20 kW at a power factor of 1.0, to .
0 kW at a power factor of 0. (*The correct symbol for kilovolt ampere is 'kV . A', not 'kva', and the correct symbol for kilowatt is 'kW', not 'kw'.)

# Convert 30 KW in to KVA?

37.5 kVA

# Convert the kva into the kw?

multiply by the power factor and you will get the kW in single phase

# Convert kw single phase to 3 phase kva?

Kva = 0.9*kw

# What is KW and KVA?

"kW" (kilowatt) is a measure of rate of actual energy flow. "kVA" is AC voltage multiplied by current. Purely reactive loads (inductors and capacitors) do not dissipate power …(energy) so there is no "kW" value. On the other hand, they do conduct current and a "kva" value can be worked out. For a purely resistive load (like a bar heater, electric stove or incandescent light) "kW" and "kVA" will be the same value. For inductive loads like electric motors, the "kVA" value will be higher than the "kW" value. Alternative Answer When an AC current flows through a purely resistive circuits, its temperature increases above the ambient temperature, and energy is lost to the surroundings through heat transfer. This energy transfer is irreversible. The rate at which this energy loss is taking place is called the true power of the circuit, and is expressed in watts (symbol: W ). When an AC current flows through a purely reactive (i.e. inductive or capacitive) circuit, during the first quarter-cycle, energy is stored in the magnetic or electric field, and returned to the circuit during the next quarter cycle. So, although energy transfer is taking place, there is no net loss of energy. The rate at which this energy transfer is taking place is called the reactive power of the circuit, and is expressed in reactive volt amperes (symbol: var ). However, most practical circuits are inductive-reactive circuits. So, when AC current flows through an inductive-reactive circuit, some energy is permanently lost while some energy is transferred from and back to the circuit. In other words, most circuits exhibit a combination of true power and reactive power. The vector sum of true power and reactive power is called apparent power , and is expressed in volt amperes (symbol: V . A ). To summarise: (Apparent Power) 2 = (True Power) 2 + (Reactive Power) 2 From the above equation, in a purely resistive circuit, the apparent power will be equal to the true power. For resistive-reactive circuits, the apparent power will always be larger than the true power..

# How do you convert kva to kw and currents?

3 phase kVA = V*I*sqrt(3) Where voltage is line to line, and current is the actual RMS current flowing in the a wire. kW = V*I*sqrt(3)*Cos (phi), where phi is the angle …between the voltage and current; Cos (phi) is also known as the power factor. kVA is the vector sum of kW (real power) and kVAR (reactive power). As the equations above suggest, you must know the voltage to correctly calculate the current.

# How do you calculate kw to kva?

Watts = Amps x Volts x Power Factor. VA = Amps x Volts Watts and VA are equal only for resistive load where Power Factor = 1.

# Why transformerrated in kva but not in kw?

V X A = W .....from.. (P=IV) W = power V x A = apparent power

# How do you convert electrical power KW to KVA?

A: They are both the same the first is the product volts times amperes the second is related to volts and amperes also. The difference is the second term is used to rate trans…formers power output in terms of voltage to amperes. Example a 1kva means that you can expect 1kv at 1 ampere on the transformer output . But here is the trick the transformer only put out 250 volts So now what It means is 250v at 4 amperes nothing has changed the power remains the same 1 kw To convert KW to KVA just leave the power factor (pf) out of the equation. Formula for Kilowatts = I x E x pf/1000. Formula for KVA = I x E /100.

# How can you convert kVA to kW?

KVA = (Volts x Amps)/1000 Watts = (Volts x Amps x Power Factor)/1000 Power Factor is from 0 to 1 with 1 being related to a pure resistive load. Power factor is less than… one for inductive devices like motors which are more likely to be rated in KVA or just VA. A KVA rating will therefore always be greater than or numerically equally to KW rating. Another answer You are mixing VA (Volt Amperes) and Watts. The "k" means 1000. Watts = Volts x Amps x Power Factor VA = Volts x Amps Power Factor ranges from zero to one with one indicating a pure resistive load. Therefore, 1 kVA = 1000 kW when PF = 1.

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# How do you convert KW to KVA in single phase?

In common everyday usage and in about 99% of the circuits you will work with, KW and KVA are the same value. However, Watts has a very technical definition that does not exist… in every circuit, such as motors, transformers, and capacitors, but every circuit has volt-amps, or VA. The K just stands for thousands in both abbreviations. More Information: VA is short for Volt-Amps, i.e. volts times amps, which may seem to be the same as watts. This is true only for resistive loads, where the phase angle of volts is the same as that of amps. In that case KVA is the same as KW. What happens with non-resistive or reactive loads, however, is that amps are not in phase with volts. In an inductive load, such as a motor, amps lags volts; while in a capacitive load, amps leads volts. In both of these cases, you cannot just multiply volts and amps to get watts, due to a phenomenon known as power factor; power factor being the ratio of apparent power to true power. To visualize this, you need to draw the power circle. Since WikiAnswers does not presently support graphic images, please take a piece of paper and follow along with me... Draw a circle. To make it easy to do the math, draw it centered at the origin, and pretend that it has radius of one. This way, the trigonometry is easy. Consider that the radius of the circle is VA, KVA, or MVA, what ever scaling factor you want. (Do not confuse this with the trigonometry trick where we also consider the radius to be one.) Now, pick a point on the circle. Twelve O'Clock is a purely resistive load, where volts and amps are in phase. Nine O'Clock is a purely inductive load, where amps lags volts by 90 degrees. Three O'Clock is a purely capacitive load, where amps leads volts by 90 degrees. In "normal" trigonometry, zero degrees is at 3:00 O'Clock, but, by convention, zero degrees when dealing with reactive power is accepted to be 12:00 O'Clock. Just keep the trigonometric identities straight in your mind. In practice, with normal electric motors and all other things considered, we see a point on the circle at about 10:30 or 11:00 O'Clock. Let's pick 10:30, to make the math easy. So, draw a line from the origin to the upper left at an angle of 45 degrees with respect to the Y-Axis. Label this line KVA. Notice that KVA is constant, no matter what the phase angle may be. Now, draw two more lines; one from the point on the circle at 10:30 O'Clock straight down, perpendicular to and stopping at the X-Axis - label this line KW, and one from that same point to the right, perpendicular and stopping at the Y-Axis - label this line KVAR. Label the angle of the first line with respect to the Y-Axis as phase angle. Positive meaning inductive, and negative meaning capacitive. Notice that, if you had a 45 degree capacitive load, intersecting at 1:30 O'Clock, the magnitude of the KVAR line would be the same, though positive instead of negative, and the KW line would still be the same. Now, power factor is KW / KVA, the ratio of apparent versus true. In this case, since we picked 45 degrees as the phase angle - to make it easy - the ratio is 0.707, or the cosine of the phase angle. A typical power meter will register less than the actual power. In the worst case of a purely inductive load, the power meter would register zero, though the KVA is still what it always was. The power meter is "lying", due to the power factor - energy is still being transferred - and the equipment must be sized to handle it - that is why transformers and other things are often rated in KVA instead of KW. Now, if you are interested, and most power companies, engineers, and electricians are, then look at KVAR. That is kilo volts-amps reactive. There is a KVAR power factor as well, simply the sine of the phase angle. In this case, again with 45 degrees, it is the same as the normal power factor, 0.707, however, we normally would call that -0.707, to differentiate between KVAR (inductive) and KVAR (capacitive). So, to answer the original question, "How do you convert KW to KVA", you simply divide by power factor, and to obtain that, you need to know the phase angle. It is simple trigonometry from there. Note that, if your phase angle is more than plus or minus 90 degrees, we are actually talking about a generator, instead of a load. In practice, the phase angle is more like 20 to 30 degrees, so the power factor would be slightly higher, and the reactive power factor would be slightly lower. Power companies penalize large customers for poor power factors by measuring it and compensating their power meters or accounts to consider the perceived loss in energy or, more correctly, the increase in actual energy use. Also, poor power factor causes degradation of voltage on power lines, so power companies compensate with capacitor banks, shifting the phase angle back closer to zero. There is no longer a need to penalize large customers for poor power factors since their billing is based on current, not Watts. This is why you see a very residential-looking meter on the side of very large buildings. There is a current transformer (CT) placed around each service conductor. Each CT is then wired with very small conductors into the current meter. Next time you go through a drive-through, notice the meter location on the back of the building. You will find it in close proximity to a junction box that contains the service conductors. A current transformer is nothing more than a larger version of a clamp-type ammeter used by electricians.

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# How can you convert the kva rating into kw rating?

kva*cos(phase angle)

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# How do you convert Kva-Kw?

To convert from KVA (kilovoltamperes) to KW (kilowatts) simply multiply by power factor. Power factor is the cosine of the phase angle between voltage and current.

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# How will convert kva and kw?

The kilovolt ampere ( kV . A , not 'kva') is the unit of measurement for apparent power . The kilowatt ( kW , not 'kw') is the unit of measurement for true power . … The relationship between these two quantities is: true power = apparent power x power factor

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# Can direct current kW be converted to KVA?

With a dc system the kW are always equal to the kV times the amps. It's only with ac that the kW are usually less than the kVA by a factor called the power factor.