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How many amps does 350hp motor 480v 3 phase draw when operating?

Anonymous

∙ 12y ago

Updated: 10/31/2022

The formula you are looking for is; Amps = HP x 746/1.73 x Volts x %eff x pf.

350 x746/1.73 x 480 x .90 x .90 = 261100/672 = 389 amps. This amperage assumes that the efficiency of the motor is at 90% and the power factor of the motor is also at 90%.

Wiki User

∙ 12y ago

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Q: How many amps does 350hp motor 480v 3 phase draw when operating?

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Can a 230 460 volt 3 phase motor be connected to a 277 480 volt 3 phase circuit?

Yes, that's possible, but only for low-powered motor. You know that in order to start, the stator must be supplied with voltages that are shows shift phase between them, so the trick is to use a capacitor (since it shifts phase current) to simulate a 3-phase source. As indicated in the following picture: http://freecircuitdiagram.com/wp-content/uploads/2010/10/Enabling-3-Phase-Motor-Operates-with-Single-Phase-Supply.gif

What happen to 440v motor running at 480v?

Depends on the motor. If it is a synchronous motor it will run too fast.

Can a 600V rated cable be use in 480V 3 Phase Ckt?

yes,

What is the voltage for each leg on a 480v 3-phase pannel phase to neutral?

Only one neutral conductor is typically in a 3 phase panel.

Can you run 480V motor on a 380V system Have is 480v 60hz 3 phase equipment and moving to a country with 380V 50HZ power supply?

It will probably run but not correctly. Low voltage will cause the motor to draw less amps than it's designed to. It will not reach its rated RPMs and such slow operation may shorten its operating life.

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