How do you calculate hp to amps in 3 phase suply 415 volt?
One horsepower electric is 746 watts. Divide that by 415 to get amps, giving about 1.8. Divide that further by 3 because it is three phase power, giving about 0.6. Divide that further by power factor to compensate for apparent versus true power caused by reactance, say about 0.8, giving about 0.75.
To answer this question a voltage should be stated. Three phase motor, 230 volt 5.2 amps, 460 volt 2.6 amps, 575 volt 2.1. Single phase motor, 115 volt 20 amps, 230 volt 10 amps. These are nominal amperages from the code book. For accurate calculations the amperage should be taken from the motors name plate.
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.
Volt-Amp is apparent power, in direct current Volt x Amps = power with unit of Watt. For Alternate Current Volt-Amp is generally different from real power because the power supply in wave form and might be out of phase and portion of energy is not usable. Volt-Amp is always higher or equal to real power in AC.
All transformers, single phase or three phase have a "no-load current" rating. That is simply the nameplate rating of the Xformer in VA, (volt-amps) or KVA (1000Volt-amps) for larger Xformers. Simply divide the nameplate rating in VA or KVA by the supply voltage and you'll get the Xformers potential maximum output in ampheres.
A volt-amp or VA is equivalent to watts, provided the voltage and amperage are in phase. So 1 kilo volt amp is the same as 1 kilowatt. Wattage, or power, is equal to volts times amps. So the original question is effectively nonsense. The number of amps depends on the voltage. If the voltage is 1000 volts, then there's 1 amp in 1 kilo volt amp. If the voltage is 1 volt, then there's 1000…
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.
6000amps <<>> The above answer must have big lugs to accommodate 6000 amp capacity wire. In my breaker catalogue the largest 120 volt single pole breaker is 70 amps, 277 volt single pole is 150 amps and 347 volt single pole is 100 amps. The 120 volt single pole breaker occupies two opposed slots because of its length.
to calculate: 1hp=745W 3hp=745*3=2.2Kw assuming a 3 phase motor power is V*I*pf*the square root of 3 I would gues a PF of 0.8 if its a resonable motor which gives about 7.2 amps per phase. if the PF is bad say .65 it could pull up to 9 amps in short, too little information to give you the actual answer.
For a single phase 3 HP motor at 208 volts the amperage is 18.7 amps. For a three phase 3 HP motor at 208 volts the amperage is 10.5 amps. This figure is derived at by taking the full load amps at 230 volts and adding 10%. As the voltage goes down the amperage goes up. For 200 volt motors 15% is added to the FLA of a 230 volt motor.
Forgetting amps for a second if you produced 8 gigavolts a second could you say you are producing 8 gigajoules a second?
This question cannot be answered as asked. you would need to know also the voltage and phasing. Assuming we are dealing with 120-volt, single phase, 11,500 watts would be 55-running amps. Assuming we are dealing 208-volts, three phase, 11,500 watts would be 32 running amps and assuming we are dealing with 250-volt three phase, 11,500 watts would be 26.5 running amps. I hope I have answered your question.
Generators are rated in volt-amps (va) and may also have a wattage rating. In most practical applications volt-amps and watts are the same. At 240v single phase, 400 amps is 96000 volt-amps, or 96kva. I would be looking for a 100 kva generator. This is a large generator if you are considering it for your home. In most situations you identify critical circuits and place only these on the generator through a transfer switch. This…
let me clear difference between phase voltage and line voltage. phase voltage is measure line to neutral and line voltage is measure line to line. there is correct answer that 380 volt is sum of multiply of square root 3 to phase voltage 220 volt. phase volt line volt 220 volt x 1.732 = 381 volt 230 volt x 1.732 = 400 volt 240 volt x 1.732 = 415 volt M. Asif ALi