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What size generator do you need for a 250 hp 480V motor that had a across the line starter?
Wiki User
∙ 12y ago
The first thing that is required is the amperage of the motor. I = HP x 746/1.73 x E x %eff x pf. This comes to about 277 amps. The second formula to use to find KVA is KVA = I x E x 1.73/1000 = 277 x 480 x 1.73/1000 = 230. The minimum size generator will be 230 KVA.
Wiki User
∙ 12y ago
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How do you convert 380v 3 phase to 220v 3 phase?
Mathematically, just divide 480 by the square root of three. Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
How do you come up with 277 volts?
The star point or wye voltage of a 480 volt three phase four wire system is 277 volts. The 480 voltage is divided by the sq root of 3 (for 3 phases). The sq root of 3 is 1.73. 480 volts/1.73 = 277 volts. The same formula is used on all three phase four wire systems. 208 volts /1.73 = 120 volts, 416 volts /1.73 = 240 volts, 600 volts / 1.73 = 347 volts.
What is the nominal voltage of a 150 kW 480 v generator?
480V.
What happen to 440v motor running at 480v?
Depends on the motor. If it is a synchronous motor it will run too fast.
Can you run a 460v 60hz motor to a 480v supply?
The the supply stays within +/- 5% of what the motor is rated for, you can do this.
How many kw in 480v?
The code book states that the motor will draw 1.8 amps. <<>> 1 amp
What is the minimum acceptable reading for magger test for 480v motor?
if check voltage is 2000v then acceptable range is 400
3 phase reverse relay can be utilized for motor control speed?
3 phase reverse relay can be utilized to control 480V motor 60HZ for controlling their speedspeed.
Power a 415volt motor with 480volts?
in low voltage connection in wye (star conncetion) 415v high voltage connection in delta 480v
Can you modify a 220v generator into 480v power output?
Not on small household generators as they are only single phase. On large industrial 3 phase machines over 100 KW there are internal taps that can be changed depending on the generator coil configurations to select a variety of voltages.
How do you convert 380v 3 phase to 220v 3 phase?
Mathematically, just divide 480 by the square root of three. Electrically, 480V refers to the line-to-line value of a three phase system. For example, measure the voltage across A-phase and B-phase and you'll get 480V. 277V is the line-to-neutral value. Measure the voltage across A-phase and the neutral conductor and you should get 277V.
What is full load current of 20 HP induction motor in delta?
480V about 20A 240V about 40A look at the nameplate duty cycle and efficiencies vary
How many watts are in 650mA?
not enuff information 20 leds in parallel at 2.5v about 2W a motor at 480V 3 phase 600 w or 3/4 hp
Can a 440 - 480V 60Hz motor run in a site with 380V 60Hz supply If No how can it work?
The motor will run, probably at nearly the same speed, but it cannot supply the same mechanical load. If it can be run on a lighter load, proportional to the voltage, it should be OK.
