How many amps for 250 kva generator per phase at 415v?

Answer 1

If the generator is 3-phase 120/208 v. it produces 104.21amps per phase using the formula 30,000 / (1.73 x 208 x .80). If it is 277/480 v. It gives 45.18 amps. A singlephase generator will give 125 amps at 240 volts and 62.5 amps at 480v.

Answer 2

A 415 v three phase system has a line-to neutral voltage of 240 v on each of the three phase wires. Each wire supplies 250,000/3 or 83,333 VA so the current is 83,333 / 240 or 347 amps.

The current in each live wire is 347 amps. If a balanced load was delta-connected to it, the load current would be 200 amps at 415 volts.

Another Answer I suspect that you are really asking what the line current, rather than the phase current, would be.... however,

Assuming the machine is supplying a balanced load, to find out the line current (and, therefore, the phase current, in the case of a star-connected machine), you simply divide the kVA by (1.732 x line voltage):

current = (250 000) / (1.732 x 415) = 347 A.

This equation applies to both star and delta connections, so If the machine was delta connected, it would supply exactly the same line current, but the load current would be the line current divided by 1.732, or 200 A.

Answer 3

Use the formula, amperage when kva is shown; I = kva x 1000 / 1.73 x volts.

Answer 4

Here, power p=2000kva

v=550 v

Now P= 1.73*V*I*COS(PHY)

ASSUMING POWER FACTOR IS UNITY HENCE COS=1

HENCE I=(2000*1000)/(1.73*550*1)

=2101AMP

Answer 5

Amps/3*0.8=(kva*1000)/(1.73*volts)

220v 380v

250kva 175amp 101amp

Answer 6

For a 415 v three-phase generator the current is 278 amps for 200 kVA.

Answer 7

To answer this question correctly, the voltage of the generator must be given.