What is the fuel consumption per KVA and per hour of a diesel generator set?
This varies widely on many different factors.Manufacturer of the engine Size of the generatorLoad at which you are testing these valuesGenerally speaking, larger generators are more efficient when comparing their gallons per kVA, same with the gallons per hour. Please note that you should try not to operate a diesel generator at less than 50% load. Diesel engines operate better on load, operating without load or with a low load doesn't allow the engine to reach it's maximum operating temperature and you will have many issues which will lead to a short product life.If you can provide more info on your specific request I, and many others here, would be able to provide a much better response.
How do you convert kVA to amps?
You need to know the voltage and whether it is 3 phase or single phase.For single phase just divide the VA by the voltage ie: 10kVA = 10000VA so at 230 volts the Amps will be 1000/230 =43.478260 AmpsFor 3 phase the equation involves the square root of 3 which is 1.732050.Amps = VA/V*1.732050*EFF*PF (if known)EFF = efficiency especially for motors. PF = power factor of the load. The worse the power factor (lagging) and efficiency the higher the apparent current drawn from the supply.So for a 3 phase 10kVA load in a 230 Volt system (400V line to line actually 398 according to the exact maths)It would be 10000 divided by (400V x 1.732050)or 10000 divided by 692.82 which is 14.43376AThe difference between 1 phase and 3 phases is not a simple divide or multiply by 3 due to the 120 degree phase angles between the phases.Hope this helps.
How much RPM is needed by a generator to give an output of 5 kw?
Generator RPM has nothing to do with output power.The constant speed of the diesel generator is 1500 revolutions per minute.Speed and frequency are related, only engine speed constant 1500 revolutions per minute can produce 50 Hz AC. So the speed is related to the frequency.
How many amps are there in a 30 KVA generator?
More information is needed to answer your question, but some assumptions could be made to give a reasonably accurate answer. We start with the basic calculation which is fairly simple:For three phase current, VA = Voltage x Amps x P.F x √phases = V x I x P.F x 1.73WhereI = amperesV = voltagePF = power factor (usually either 1.0 or 0.8)kVA = VA x 1000(Note that the square root of three is only used for 3 phase current. In single phase calculations, the square root of one is used, which equal one and therefore won’t change the result)To find amperes (current) for three-phase current we just rearrange the formula.I = (kVA x 1000) / (V x √3)For single phase current you can just leave out the √3I = (kVA x 1000) / VWith that knowledge, we can calculate some real numbers just for fun. Naturally, you should plug in your own voltages and phases. 30kVA = 30,000VA240V Single Phase → 30,000VA / 240V = 125 amperes240V Three Phase → 30,000VA / (240 x 1.73) = 72.25 amperes208V Three Phase → 30,000VA / (208 x 1.73) = 83.37 amperes480V Three Phase → 30,000VA / (480 x 1.73) = 36.13 amperesYou can find out more about single- or three-phase generators and how they are different here → Single-Phase versus Three-Phase Generators.MJ
How long does it take a 19 kW steam engine to do 6.8 x 10^7 J of work?
Power = Work / Time rearrange to solve for Time P = W/ t t = W / P W = 6.8 x 10^7J P = 19000 W t= 6.8x10^7J / 19,000W t= 3578.947368 answer to significant digits and ****
How many kva generator is required for 8 HP motor?
Firstly we need to see the starter of motor.There are three types of starters -Direct On line (~6 times jerk load)Star Delta (~3 times jerk load)Soft Starter (~1.5 times jerk load)Jerk load means the starting load.Now I am assuming that 8 HP motor is with Star delta starter & 3 phase. 1 HP ~ 1 KVAStarting Ampere required :KVA = √3V.II = 11.2 ampereJerk = 3 X 11.2 = 33.6 Ampere.Now Block load (Starting load on genset) :KW = √3 VI Cos fieCosfie = 0.4 (This is the starting power factor of motor)1.73 X 415 X 33.6 x 0.4 divide by 10009.6 KWNow divide by 0.8 to get KVA from KWMinimum 12 KVA is required to run the above said motor if starter is star delta.Available rating in the market is 12.5 KVA Genset.