How to convert a 380v motor to 220v

Your motor is a three-phase 380v power supply. You mean that if you want to use a 220V single-phase power supply, then find a motor repair department and let you wind this motor into a single-phase 2-pole motor, but you need to add a capacitor, if you change it to a capacitor start type, you need to add a centrifugal switch on the motor shaft. There is a little trouble, the cost is about 170, the most convenient way is to buy another one, 2-pole single-phase motor.

Single-phase motor generally refers to a low-power single-phase asynchronous motor powered by a single-phase AC power supply (AC220V). This type of motor usually has a two-phase winding on the stator, and the rotor is a normal squirrel cage type. The distribution of the two-phase windings on the stator and the power supply can produce different starting and running characteristics.

When a three-phase motor is fed with three-phase alternating current, a rotating magnetic field is generated that cuts the rotor windings.

1. First of all, it is necessary to distinguish the head and tail of the three sets of coils of the motor. Since it is a restructured line, special attention should be paid to the beginning and end of the coil.

2. Then start wiring. Specifically, connect the green wire at the head and the yellow wire at the end in the wiring row hole.

3. Then put the red line at the head and the blue line at the end and connect it into another hole in the seat.

4. Then connect the yellow line and the red line at the end in the third hole of the seat. The above steps are actually to change the three-phase motor coil from the star connection method to the triangle connection method. That is, three groups of coils are connected head to tail to form a triangular connection.

5. Due to the large number of wires, the 6 wires of the motor are connected to one side, and the other side of the row seat is connected to 2 power cables, which is the 220 volt power input terminal. In the case of uncertain steering, 2 wires can be connected to 2 holes at will. As shown in the figure, it is connected to the holes at both ends.

6. Next, connect the working capacitor to the circuit. That is, one wire of the capacitor and the power cord are connected to one hole, and the other wire of the capacitor is connected to the middle hole of the socket. This forms the 2 windings required for the operation of a single-phase motor.

7. Finally, connect the starting capacitor. Due to the relatively large power, it is necessary to connect a large capacitor, that is, a wire of the starting capacitor is also connected to the side of the running capacitor at the power supply end.

Notes:

Three-phase alternating current is a form of transmission of electric energy, three-phase electricity is a group of three-phase alternating current with equal amplitude, equal frequency and 120 ° difference between phases, which is generated by a three-phase generator with three windings, and is a commonly used power supply in industry.

The difference between three-phase power supply and single-phase power supply: the power supply sent by the generator is three-phase, and each phase of the three-phase power supply and its neutral point can form a single-phase circuit to provide users with power energy.

Yes. The inverter can completely turn 220V household electricity into 380V industrial electricity for driving three-phase asynchronous motors. The output is an analog sine wave three-phase alternating current with adjustable frequency and voltage, not a standard sine wave, which can only be used to control a three-phase asynchronous motor, and the speed of the motor can be adjusted by changing the output frequency of the inverter, and cannot be used on a single-phase load.

The main circuit of the inverter generally adopts the AC direct working mode, which is to turn the alternating current into direct current, and then through the internal high-power switch tube of the inverter, it is turned on or cut off according to a certain program to simulate the process of 3-phase sine wave alternating current output. According to the type, the model is divided into 3-phase and single-phase AC input, which is usually designed for industrial control, and most of them use industrial three-phase AC as the input power supply, and the design capacity is also larger.

1.In general, it is not possible to convert 220V single-phase AC to 380V three-phase AC without the help of power electronics. The rise and development of power electronics has made this transformation possible. Single in and 3 out UPS is one of the devices that realizes this conversion.

2.The UPS with AC 220V (single-phase) input and AC 380V (3-phase) output is generally composed of rectifiers, inverters, and step-up transformers. The principle is the same as that of a general UPS:

The input 220V single-phase alternating current is converted into direct current (voltage less than 311V) through the rectifier; The direct current is then converted into 3-phase alternating current (voltage less than 110V) through the inverter.

3.The output voltage of the inverter is less than the required 380V, so it has to be boosted to 380V through a step-up transformer. In this way, the conversion of 220V single-phase AC to 380V three-phase AC is realized.

4.Single-in, three-out inverters are also available. It is necessary to have rectification and inverter to realize the conversion from single-phase to three-phase.

The method of turning 220V single-phase electricity into 380V three-phase electricity is as follows: use a single-phase motor to bring a three-phase asynchronous motor, and connect three non-polar capacitors (the withstand voltage value is above 450V) into a triangle and connect them on the three-phase asynchronous one, you can output three phases, of which two phases are 380V, and one phase and the shell are 220V. Three-phase alternating current is a form of transmission of electrical energy, referred to as three-phase electricity.

Three-phase AC power supply is a power supply composed of three alternating currents with the same frequency, equal amplitude, and 120° difference in phase. Three-phase alternating current has many uses, and most of the alternating current electrical equipment in the industry, such as motors, use three-phase alternating current, which is often referred to as the three-phase four-wire system.

Hello dear! The wiring method of changing the 380V motor to the 220V motor is as follows: 1. Connect the two outlet ends of the three-phase motor with the live wire and neutral wire at both ends of the power supply.

2. The remaining terminal of the three-phase electric is connected to the capacitor. 3. The other end of the capacitor is connected to the other end of the power supply through the wiring method of reversing the neutral line. Three-phase motor generally refers to three-phase asynchronous motor.

Three-phase asynchronous motor is a kind of induction motor bridge, is a kind of motor powered by simultaneous access to 380V three-phase AC current (phase difference of 120 degrees), by the pin dissipation in the three-phase asynchronous motor rotor and stator rotation magnetic field in the same direction, different speeds into rotation, there is a slip rate, so the loss of the stove is called three-phase asynchronous motor.

No. The inverter is generally an electric energy control device that uses the on-off effect of the power semiconductor device to convert the power frequency power supply into another frequency, which cannot be boosted, and the single-phase 220V AC power into the inverter comes out of the three-phase 220V AC power.

If the motor is changed to an angle joint, if it is a corner connection, then there is no way, and the motor power will be reduced by about 4/10 after being connected.

A 220v motor becomes a 380v motor, and the following steps need to be taken:

1.The three coils of the positioning motor, normally, the blue and white coils are 240V or 220V circuits, and the black or red coils are 380V circuits.

2.Disconnect the wiring on the original motor terminal box, connect the adapter to the adapter, and connect the wiring of the adapter to the motor terminal box that has been modified.

3.Connect the power supply according to the standard instructions of the adapter, and test whether the working condition and phase matching are accurate after power-on.

4.For motors where the speed does not need to change, use an active method that changes any motor data.

All in all, it is necessary to modify the motor under the guidance of the technician's assignment and sharp hole, and do not operate blindly to avoid potential safety hazards.

There are two ways to convert a 220v motor into a 380v motor:

Method 1: Use transformer to boost voltage.

Use a transformer to boost the voltage from 220V to 380V, and then connect the 220V motor with the transformer to the power supply. This method requires the selection of a transformer that matches the transformer capacity to ensure that sufficient power can be supplied.

Method 2: Replace the motor winding.

Replace the windings of the 220V motor with windings suitable for 380V voltage. This is a rock hall with a more complex operation that requires technical personnel to carry out.

It should be noted that both of the above methods require relevant knowledge of electrical technology, and it is necessary to select a transformer or motor winding that meets the electrical parameters. At the same time, special attention should be paid to safety matters during conversion to prevent electrical hazards and affect the service life of the equipment. It is advisable to seek the help of a professional electrician during the conversion process.

The general 380V motor with star connection can be changed to the corner connection method to use a three-phase 220 power supply, and vice versa.

[Calculate how much it will cost you to renovate your home].

After some consumers buy a three-phase motor, they will want to use the three-phase motor in 220V voltage for various reasons, so how to wiring the 380V motor to 220V? Wiring, let's simply introduce to you how to wire a 380V motor to 220V.

1. According to Qeeka Home experts, the 380V motor can be converted to 220V by increasing the capacitance, and the original Y-type winding connection method of the three-phase motor is changed to the angular connection; Then connect the two wires at the three-phase 380V outlet end with the power live wire and neutral wire; The remaining wires are connected to the capacitor, and one end of the capacitor is connected to the neutral line of the power supply in reverse. You can also buy a 380V 220V inverter, and connect the motor and 220V power switch to the inverter.

2. When you buy electrical products, you should pay attention to the use voltage and other relevant information of the product, so as to avoid the mismatch between the electrical voltage and the power supply voltage. If you want to convert a three-phase motor to a single-phase motor, you can ask a professional to change it. Because the conversion of a three-phase motor to a single-phase motor involves a lot of professional knowledge, such as capacitance capacity, etc., the connection method of the motor, etc.

3. In principle, three-phase motors below 3 kilowatts can be changed to single-phase motors, but after the three-phase motor is changed to a single-phase motor, it is easy to have serious heating, large power attenuation, difficult start-up, and affect the service life of the product, so we try not to change the high-power three-phase motor to a single-phase motor.

4. Compared with single-phase motors, three-phase motors have the advantages of good running performance. The three-phase motor on the market can be divided into two types: cage motor and winding type, of which the cage motor has the advantages of excellent structure, affordable and reliable operation, but its starting current is very large, and it is difficult to regulate the speed.

With the specific wiring method of 380V motor to 220V motor, you can consult a professional electrician.

Enter the area and get the decoration for free**].