VAC means volts AC, and is a measure of the voltage in an AC circuit.
KVA means kilovolt-amperes, and is a measure of the power in a circuit. For a resistive load, KVA is the same as KW, or kilowatts.
The two terms are not related in that you can not compare one to another without also knowing the current flowing in the AC circuit. VAC * IAC = KVA, when all values are in RMS (not peak to neutral or peak to peak quantities).
kva (Killovolt-amperes) is the product of volts and amperes. There for there is no answer to this question since the units are not the same. Example: 1000 volts x 1 amperes = 1000va = 1kva. Also 500 volts x 2 amperes = 1000va = 1kva.
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The transformer size is calculated by using the load current that is required on the secondary side of the transformer. This secondary current is multiplied by the secondary voltage times 1.73. This total is then divided by 1000 to give you KVA. KVA = I x E x 1.73/1000.
200 amps is equal to zero kva. To answer this question a voltage is needed.
There is appoximately zero kVA in 14amp, .5 volt AC.
It is apples and oranges--kVA and volts are different units describing different things. Determining kVA requires measuring both voltage and current.
kva and kw are related as KVA = (KW/PF) pf:power factor
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The transformer size is calculated by using the load current that is required on the secondary side of the transformer. This secondary current is multiplied by the secondary voltage times 1.73. This total is then divided by 1000 to give you KVA. KVA = I x E x 1.73/1000.
200 amps is equal to zero kva. To answer this question a voltage is needed.
2.5 kVA means 2500 VA (volt-ampere). To calculate the amperes you need the voltage. 2.5 kVA x cos (phi) = 2.5 kW (kilowatts) if phi is 0 or power factor (phi) is unity.
KVA is very simple, it is the Volts x Amps of an AC circuit in units of 1000. For a single phase AC circuit VA = E x I. KVA = (ExI)/1000 So if you have 120 VAC and 15 A then: VA = 120 x 15 = 1800; KVA = 1800/1000 = 1.8 For 3 phase circuits we need to add the square of 3 (= 1.732) as a factor. VA = 1.732 x E x I and KVA = (1.732 x E x I)/1000 So if you have 480 VAC and 23 A then: VA = 1.732 x 480 x 23 = 19,121; KVA = 19,121/1000 = 19.1 Note that KVA is higher than KW (true power) in circuits that are not purely resistive. The vector difference of the two is "Power factor".
It equals zero without a voltage.
1000 VA = 1 kva
1000 VA = 1 kva
20.44 kva
There is appoximately zero kVA in 14amp, .5 volt AC.
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