Q:How is the rated current of three-phase AC motor calculated?

The rated current of the three-phase motor rated power = (W) / (1.732 * * * rated voltage power factor efficiency)

Q:is the capacitor a surge protector or a power factor corrector or ups or power divertor

It's for starting the motor. Many AC motors work fine as long as they are moving the least little bit. But from a dead stop, the capacitor provides a phase-shifted voltage to an extra winding that gives a little bump to get the motor going.

Q:Is there currently a car that uses DC current Traction Motors, for the wheels, and a generator for power? Railroad engines use this method, on a much larger scale, of course, but has this been considered and used for automobiles?

The full hybrids that can move under electrical power alone (Toyota, Ford, Lexus and Nissan hybrids) use 3-phase AC motors. One of the reasons is that AC motors don't have commutators so they tend not to wear out as often as DC motors. These hybrids have inverters that can convert the hybrid battery's DC current to AC for use with the motors or vice versa when the motors are being used as generators during regenerative braking or being cranked by the gasoline engine to charge the battery. Railroads have been moving to AC traction in the past 10 years as well.. These days on the Class-I railroads the majority of 6-axle diesel-electric locomotives are AC, like the SD70ACE locomotives from Electromotive and the ES44AC Gevo from General Electric.

Q:Here is the 3-phase AC motor Motor Description:Phase: 3H.P.: 1.0Amps: 2.8/1.4Volts: 200-230/460RPM: 1725Service Factor: 1.15I want to operate the above mentioned 3-phase 230volt AC motor with 12volt DC to 230volt AC inverter BUT I do not know if any such inverter exists in the market that can operate 3-phase AC motor? 1. If you know any such inverters, Please list them in your answers.2. If no such inverter exists in the market, then what is the solution to operate the above mentioned 3-phase 230volt AC motor with 12volt DC to 230volt AC inverter?3. Answers with details will be appreciated.

230 Volt Inverter

Q:i hope that have picture of electric motor in refrigerator and more details about it.

its really a compressor.

Q:The AC motor has 5 wires, 2 brown color, 1 red color, 1 black color, and 1 white color. I need to connect it to 110 Volts ( 2 wires)

You should decide immediately to connect if the motor has no nameplate diagram. New motors even the single phase ones has a diagram attached to the terminal box cover.Bring the unit to an experienced electrician.

Q:What kinds of AC motors are divided into?

AC motors are usually divided into AC generators, AC motors and synchronous regulators according to their functions.AC motors are divided into two major categories: synchronous motor and asynchronous motor.

Q:An electrical cabinet is cooled by a 18000 BTU air conditioner. The heat that is transfered from inside the cabinet to the outside of the cabinet PLUS the heat generated by the A/C system componets = to the total power consumed by the A/C system ?

Short answer: take the BTU rating and add about 1/6 more to account for the power consumed by the motor to get the total maximum heat rate dumped out the dump If the A/C motor consumes 6 amps of 120 volts, then that 720 watts that needs to be dissapated somewhere, somehow. About 15% will be wasted in the motor for a single-phase motor and 85% will be do useful work (and ultimately end up as heat. 0.720 kilowatts x 3413 BTU/hr per kw = 2460 BTU/hour Refridgeration, depending on the coolant used and the temperature range (inside versus outside the cabinet) have efficiencies of 4 to 11 or so. Let's try 7.5. So 2460 BTU/hour of electrical power consumed x 7.5 = 18,000 BTU/hour of heat moved from inside to outside. Add the 2460 (motor) + 18,000 (cooling) and there's your total heat dumped out the back of the cabinet. Note that A/C systems often have duty cycles and all of the above is about peak rates. When the cabinet contents generated a lot of heat and its a hot day, the A/C will run for a long time. If the contents are unpowered, the duty cycle of the A/C might 10-15% of the time.

Q:Types of AC motor speed control and the difference between them

Motor variable pole speed regulation ---- a specific motor internal to do a specific winding, through the motor of different wiring mode to change the motor magnetic pole logarithm, get different speed. Formula: synchronous motor speed, =60f/, magnetic pole logarithm (f--- frequency), magnetic pole logarithm change, the speed also changed. The disadvantage is not stepless speed regulation (such as 2-4 pole motor, synchronous speed is only two gear, when connected to the 2 pole is 3000 rpm, when connected to the 4 pole, is 1500 rpm.

Q:AC servo motor why drive?

Ordinary AC motor speed is 1400 rpm, why is 1400, because the average power is 220V, 50Hz, which is 50 times per second transformation phase, and the motor is usually 4, which is two times the phase transformation of a turn, coupled with the general AC motor is not synchronous, asynchronous communication the motor, so a little slower than the theoretical speed of 50/2*60=1500, so it is usually about 1400. Thus, the speed of the motor can be changed by changing the frequency of the power supply. A controller corresponding to an ordinary motor is called a frequency converter.