What does KVA stand for in relation to transformers?

if you got a 3.5kva transformer how much power,amps does it allow you? how do you work it out?What does KVA stand for in relation to transformers?The answer that Dutch gave is perfectly correct, but may not tell you exactly what you want to know.



KVA stands for thousands of volt-amperes. 3.5 KVA is 3500 volt-amperes.



For your example: if you divide 3500 by the primary (input) voltage, you get the maximum primary current (amperes). If you divide 3500 by the secondary (output) voltage, you get the maximum allowed secondary current.



To avoid overloading a transformer, you must not exceed the primary voltage, primary current or volt-ampere ratings. You must also not exceed the secondary current rating.



Since watts = volts X amperes X power factor and power factor is between 0 and 1, the available power may be less that the available volt-amperes depending on the nature of the load. To avoid having to deal with power factor, appliances that have a power factor that is less than 1 are usually marked with the maximum load amperes rather than watts. If an appliance has watts marked on it, you can usually divide the watts by the volts to find the amperes.



I assume that you don't need to know about 3-phase power.What does KVA stand for in relation to transformers?
Tranformers do not use the power but they transform the voltage from one value to another

So they are rated in KVA or VA it is the maximum voltamps that can be be present on the primary or the secondary coils.



Take your example a 3.5 KVA transformer to know the current on each side we need to know the voltage on each side and the number of phases.



Assume a single phase 3.5 KVA transformer with 240 volts primary and 110 volts secondarythen the maximum currents on each side are:-



Primary current = 3500/240 = 14.58 Amps

Secondary current = 3500/110 = 31.81 Amps



Power is dependent on the load connected not the rating of the transformerWhat does KVA stand for in relation to transformers?"Kva" is apparent power, and is proportional to current.



In relation to transformers, the 'kVA rating' of a transformer tells you how much power can flow through a transformer without exceeding a temperature rise associated with the rating. For example, there is a temperature rise rating for the 3.5kVA transformer - you didn't tell us what it is, but in most high power applications, transformers are rated for either 55 deg C rise or 65 deg C rise (depending on the insulation used in constructing the transformer). Let's assume that your transformer has a 55 deg C rating - that means that if you operate the transformer continuously with 3.5kVA passing through it, the temperature of the transformer will be elevated 55 deg C above the temperature of the ambient surrounding the transformer.



Transformers almost always exist to transform voltage from one level to another. Let's assume your 3.5kVA 55 deg C transformer has a 10:1 voltage ratio - from 1000 v to 100 v. And for simplicity, let's assume that its a single-phase transformer. Therefore, since it is able to transform 3.5kVA at either 1000 v or 100 v, that means it is able to handle the following currents:



at 1000 v - 3500va/1000v = 3.5 amperes

at 100 v - 3500va/100v = 35 amperesWhat does KVA stand for in relation to transformers?
KVA is "apparent power." It is an acronym for Kilo-Volt-Amps. It is the sum of real power which are called Watts, and imaginary power which is called Volt-Amps-Reactive. If you have a power-factor, you can calculate the real power from KVA. However, KVA is in fact a measure of power.



tfizzum4 ~ A volt-amp is not a Watt. If you do not know the answer, you shouldn't answer.What does KVA stand for in relation to transformers?KVA stands for kilo-volt-ampere



(Volt)(Ampere) = Power, as represented by this formula:



P = IV, where I is electric current (in amperes) and V is electric potential (in volts)



Therefore, volt-ampere is equal to Watts, which is the SI unit of Power.



If you have 3.5 kva, you have 3.5 kW of power or 3,500 W of power.What does KVA stand for in relation to transformers?
Kick Voltrons A$_
the first 2 answers are correct