AC electric

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Packaging Detail:	Wooden box or according to customer's requirement
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electric motor,the motors have high efficiency , beautiful modeling ,compact structure, low noise, large starting torque ,et

1.3-phase asynchronous motors
2.IEC standard
3.OEM
4.Voltage:50HZ &60HZ;380V&415V
5.Protection class: IP54 IP55

Q: What is the general ac motor in electrical design?: Generally speaking, more than 200KW will be used with high voltage motor, but there will be exceptions, such as some pumps under 400KW with low pressure

Q: The voltage must be, what is the speed of the motor What is the rated voltage of the motor in alternating current? (with winding winding number): Voltage must be associated with the frequency of alternating current and turn.

Q: How does the ac motor work? What can you do to change why?: When you work, you convert electrical energy into mechanical energy (if you consider the heat of the coil and convert it into internal energy)

Q: Is the servo motor alternator? What's the difference?: Ac servo is better, because it is the sine wave control, the torque ripple is small. Dc servo is a trapezoidal wave. But dc servo is simpler and cheaper. Ac servo technology itself is the reference and application of frequency conversion technology, on the basis of the dc motor servo control imitation of dc motor by PWM variable frequency control mode, that is to say, ac servo motor must have frequency conversion of this link: frequency conversion power frequency is 50, 60 hz ac rectifier to dc first, and then through a control gate of the transistor (IGBT, IGCT, etc.) through the carrier frequency and PWM control inverter for adjustable frequency waveform is similar to the cosine of pulse power, because the frequency is adjustable, so the speed of ac motor is adjustable (n = 60 f/p, n speed, frequency, f p a logarithmic)

Q: How does the current transformer in ac motor work?: The electromagnetic current transformer is widely used in the electric system, and its working principle is similar to the transformer. The wiring of the current transformer, as shown in the left. The characteristics of the current transformer is: (1) a coil in series in the circuit, and as a result, the number of turns in a coil current depends on the load current of the circuit under test. And has nothing to do with the secondary current; (2) current transformer secondary coil of the current meter and relay to the coil impedance is very small, so under normal circumstances, current transformer run in to a short-circuit condition. The ratio of a current transformer to a second rated current is called the rated mutual inductance of a current transformer Because the current I1n is standardized, the secondary coil rated current I2n is uniformly 5 (1 or 0.5), so the mutual inductance ratio of current transformer is also standardized. The kn can also be approximated as the number of turns for the transformer one and the second coils, which is the number of turns in the kn = N1 / N2 type, the number of turns for one or two coils. Current transformer is used to measure large current.

Q: Is the synchronous motor not communicating? Why do you say that brushless dc is a type of synchronous motor? Exclude o: The synchronous motor you are talking about should be the permanent magnet synchronous motor, the difference between him and dc brushless motor:

Q: Electric curtain choice dc motor or ac motor?: Ac motor cheap and long service life (up to only five years), but only for a hotel, office buildings and other projects, a lot of people think the products have passed 3 C certification, not a security issue, if not these products manufacturers of professional personnel to install, can pose a safety hazard, because they don't understand the internal structure of electric curtain motor, such things don't happen again.

Q: How to control the start-stop of 220V ac motor with a single chip? What type will you use for the relay: The current amplification comes directly with a triode, which is based on the control voltage of your relay. The 12-24v dc relay is usually selected. The protective circuit of heat relay is optional according to need.

Q: How to control ac motor speed: The ha-inverter and the rest are not economical at your speed The best way to do this is to add a gearbox

Q: What is the normal current of the three-phase motor of 3KW: So, for common communicators, the open loop control and the motor plug are not able to control the torque. If the servo ac motor is adopted, the closed-loop speed control, Angle control and position control can be blocked. For ordinary motor, you can consider, mechanical lock or jammed, mandatory locked-rotor, has completed the user's technical requirements, and then let go of mechanical plugging turn institutions, for the next process control. Ac motors are easily burned if plugged or missing. Must first understand the motor winding dc resistance of the dc resistance is under 15 Ω (motor dc resistance is smaller, the greater the power from less than 1 Ω), if the blocked or lacks when the motor has lost its ac impedance, so only under 15 Ω loop resistance of the motor, then the current can want to how much (380 v, 0.35 KW, for example: 380 present 15 = 25, 25 A was greater than the motor coil current over-current value). Often lack of phase, so the motor over-current protection (by the hand of my circuits are lack of phase, over-current protection), the first one but problems is that the current changes, this will protect the motor.

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