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More colorsHome Electricity/Electrical Engineering/Electrical Wiring
For single phase, KVA = (line to ground) * (phase current).
A 75kVA 480 to 208Y/120 volt transformer is a fairly commontransformer. I assume this is the type of transformer you arereferring to. 75k / 120 = 625 Amps.
As an FYI, the 208Y voltage is the line to line voltage, whichis equal to (phase 1) - (phase 2), where the phases are separatedby 120 degrees, thus (phase 1) * 1.732
For three phase, kVA = (line to line voltage) * (phase current)*(sqrt 3),
75k / 208 / 1.732 = 208 Amps.
How many output amps is a 45 kva transformer?
KVA is the combining two values. Volts and amps. Without the output voltage a calculation can not be made. The formula you should use is I = W/E. Amps = 45000/Volts.
How many amps will a 250 kVA transformer produce?
Transformers will output different amperages at different voltages. To answer this question the specific voltage of the 250 kVA transformer is needed.
Can you use a step up transformer 110220 with output of 16 kva?
Yes, but your input current is going to be high at 133 amps. The output of the transformer is not going to be 16 KVA, that is the rating of the transformer.
How many amps does a 45 kva transformer provide?
125 amps at 208V and 108 amps at 240V for a 45 kva three-phase transformer.
What is the output amps of a 15 kva three phase transformer?
To answer this question a voltage must be stated. I = KVA x 1000/1.73 x E. Amps = KVA x 1000/1.73 x Volts.
How many amps can put on single phase of 100 kva transformer?
Amps are not put on a transformer they are drawn from the transformer. A voltage is needed to answer this question.
How many output amps is a 600 volt 45 kva transformer?
The current is 45 x 1000/600 = 75 amperes for a single phase transformer and 45 x 1000/1.73 x 600 = 43 amps for a three phase transformer.
How many amps does a 20 kva generator output?
How much actual power does a 1KA transformer provide?
The kVA represents the power-handling capability of the transformer.So, if you were using a 1 kVA transformer at 110 volts, you could roughly estimate the maximum output to be 9 amps.
How many amps can a 100 KVA transformer carry?
The amperage would be dependant on the voltage of the transformer's secondary. KVA is Amps x Volts x 1000.
How many output amps is a 100 KVA generator?
For a simple calculation of what the output amperage of a 100 KVA generator is, the generators output voltage must be stated.
How many amps will a 250 kVA transformer in 220 volts secondary?
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How many output amps from a 75kva transformer fed with 480 ckt.?
It depends on what the output voltage is. You only specified the input voltage, not the output voltage. The equation is 75 Kva = {some} amps times {some} kilovolts. (Minus incidental losses, of course, but you still need to know output volts.)
How many output amps is a 33 KVA generator?
How many output amps does a 70 KVA generator produce?
The output current capacity of any generator depends upon it's output voltage. Kilovolt-amps are calculated from the Power Equation kVA = [(volts x amps)/1000] which you can change around to amps = [(kVA x 1000)/volts] From that you can calculate that a 70 kVA single phase 240 volt generator would have to be designed to deliver 291.667 amps.
How many amps will a 37.5 KVA transformer carry?
What is meant by a 100 kVA transformer?
KVA means thousands (K) of volts (V) times Amperes (A). A 100 KVA transformer can deliver 1000 amps at 100 volts or 500 amps at 200 volts etc.
How many output amps is a 75 KVA generator single phase?
The formula you are looking for is , A = kva x 1000/Volts.
How many amps will a 45 KVA transformer produce at 208 V 3 phase?
The formula to use when KVA is shown. Amps = kva x 1000/1.73 x E = 45000/1.73 x 208 = 45000/359.84 = 125 amps.
How many amps will a 45 KVA transformer produce at 480 volts?
What size ground wire for a 30 kva transformer?
The size of grounding wire is based on the amperage output of the transformer. The voltage of the transformer needs to be stated. Without this voltage a calculation can not be made. Amps = Watts/Volts = 30000/?.
How many amps will a 16kVA transformer produce?
A 16 KVA transformer for all intents and purposed is the same as 16000 watts. The equation for amps is Amps = Watts/Volts. As you can see without a voltage the amperage can not be calculated. If the transformer is three phase then there is another equation that has to be used. The amperage produced by the transformer is based on the connected load. The amperage capacity (also known as ampacity) is based on the… Read More
What is the maximum current input to a 45 KVA transformer at 480 VAC input and 208 VAC 125 Amp output?
That is a 3-phase transformer and the input current is 208/480 times the output current, in other words 54.2 amps.
45 kva at 208 120 volts amp load?
I am assuming that you are talking single phase. 45 kva is k = 1000, v = volts, a = amps. 45 kva is 45000 volt / amps. Input 45000 divided by 208 volts = 216 amps. Output 45000 divided by 120 volts = 375 amps. There are other losses in the transformer but as a general rule of thumb this is the calculation that you would use.
How many amps will a 10 kva transformer handle?
It depends on how many amps it was designed for. A 12.5kV/600v 10kVA 3 phase transformer can handle ~.5 amps on the primary and ~10A on the secondary. A 600/120V 10kVA 3 phase transformer can handle ~10A on the primary and ~50 on the secondary.
How can you calculat the kva in volt?
There is no kva in volts, kva stands for kilo = 1000, volt = working voltage, amps = maximum amperage draw at that voltage. eg. 1000 VA =100v at 10 amps or 200v at 5 amps. If you had a transformer that had a primary voltage of 480 volts and you need a secondary voltage at 240, with a maximum load of 5 amps, the transformer rating should be 1.2kva or 1200VA. On the premise… Read More
How do you calculate the output voltage of a transformer if kva rating is known?
You can't determine the output voltage of a transformer by knowing kva. Transformers will be marked as to input and output voltages. Some will have multiple input and output voltages. The output voltage depends on the ratio of coil turns between input and output.
How many output amps is a 150 kva transformer?
A 150kVA transformer, stepdown from 4160V to 600V, 3 phase, will have 20.8A on the primary side and 144.3A on the secondary side assuming the TX is 100% efficient, they are usually 2-3% losses to noise and heat etc.
How many amps will a 400 kVA transformer at 480 volts 3 phase supply?
To find the amperage when the kVA is known use the following equation. kVA x 1000/1.73 x Volts.
How many amps can a 10kva oil filled transformer handle?
To answer this question the voltage must be given. This is represented by the v in kva.
What is kva rating of single phase transformer?
This is the rated output of the transformer, obtained by multiplying the rated secondary voltage by the rated secondary current. And it's 'kV.A', not 'kva'.
How are transformer ratings expressed?
How many amps will a 45 KVA transformer produce with the primary at 480 volts 3 phase and a secondary output of 208Y 120 vac?
Each phase supplies 15 kVA. The primary has a line-to-neutral voltage of 277 v so the line current is 15,000 / 277 or 54 amps. The secondary has a line-to-neutral voltage of 120v so the current is 15,000/120 or 125 amps.
What is the result when 3 kva power requirement is being supplied by 250 kva transformer?
The result is that the transformer runs cool and contented. The '250 KVA' rating on the transformer is its maximum ability to transfer power from its input to its output without overheating, NOT an amount of power always running through it. If the 3 KVA load happens to be the only thing connected to the transformer at the time, then only 3 KVA flows into the transformer from the primary line, and only 3 KVA… Read More
How many amps will a sixty kva transformer produce?
Need to know what the voltage is on the secondary side! A = (60 x 1000) / E
What is a full load current in single phase transformer?
It is the rated maximum current that can be taken from the transformer. This is equal to the VA rating divided by the output voltage. So a 6 kVA 240 v transformer would have a maximum current rating of 6000/240 or 25 amps.
How to calculate transformer kva.. if kwatts are given?
Its the same thing , Kva is v( voltage ) X a ( amps ) therefore 2.1kva is 2.1kw
Amp output from a 480 volt 3 phase 15 kva tranformer?
The formula you are looking for is Amps = kva x 1000/1.73 x voltage = 18 amps
How many amps can a 250 kva transformer carry?
Maximum 335Amp. how you calculate <<>> To answer this question the voltage of either the primary or secondary must be stated. I = W/E. Amps = Watts/Volts.
Who many amps are needed to feed a 600 v to 480 v 3 phase 70 KVA transformer?
The equation for amperage when the kilowatts are known is Amps = kVA x 1000/1.73 x Volts. The electrical code states that a feeder for a transformer has to be rated at 125% for the primary and secondary load amperages. The amperage on the primary needed to supply a 70 KVA three phase transformer to its full capacity at 600 will be 68 amps. 68 x 125% = 85 amps. A #4 copper conductor with… Read More
How many amps can 30 kva transformer 575 volts to 480 volts gives?
The equation that you are looking for is; Amps when Kilowatts is known - kW x 1000/1.73 x volts x pf. Usually the power factor of a transformer is about .9.
How do you calculate power for a delta connected three phase autotransformer?
The maximum power output of the transformer is measured in VA or KVA, (volt-amps) or thousand (volt-amps). That will will marked or stamped on the transformer. If you want to measure the amount of power being used by the Xformer, measure the Line side current in amps with an amprobe and multiply by the line voltage to it. The result in watts is the power consumption.
How many amps does a 3 kva transformer draw?
The primary current of a transformer depends upon the secondary current which, in turn, depends upon the load supplied by the transformer. There is not enough information in the question to determine the rated primary and secondary currents of the transformer.
How may amps can a 500 kva transformer handle?
Without knowing the rated voltages, it's impossible to tell! And the symbol for kilovolt ampere is kV.A, not kva.
How many output amps is a 45 kva tranformer?
There is not enough information provided to answer. KVA is short for 'Kilo Volt Amperes'. That is, thousands of Volt Amps. In order to determine how many Amperes are flowing, you must know at what voltage it is operating. Amperes = 45,000 ÷ volts Bill Slugg
How manys amps are there in a 2500 kva 480 3 phase transformer?
The formula to find amps is: I = (KVA x 1000)/(E x 1.73) I = (2500 x 1000) / (480 x 1.73) I = 2500000 / 830.4 I = 3010.597A
How much does a 15 kva transformer draw on a 240 volt three phase secondary supply?
The formula you are looking for is Amps = kva x 1000/1.73 x Volts.
How many amps is 15 kva at 220 volts?
15 kva is 15,000 volt-amps, that means the volts times the amps equals 15,000, so the amps are 15,000 / 220, or 68 amps.
How many output amps is a 75 kva 208v-480v?
On the 208v side: 208 amps On the 480v side: 90 amps Transformers are generally used from higher voltage to lower voltage but they can be used in either direction.
How many turn for 500 watts?
Watts is the product of amps times volts. W = A x V. As the phrase 'turn' is used I presume that the question is about a transformer. Transformers are built with a requested voltage input and a requested voltage output at a specific amperage. The transformers are then rated as VA (volt x amps) for small transformers or KVA (volt x amps/1000) for larger size transformers.
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