How to connect the single capacity of a two-phase motor
Two-phase motor single-capacity four-wire connection method is as follows: 1. The main coil of the two-phase motor was connected to L1 and L2 of the power supply. 2. The auxiliary coil of the two-phase motor was connected to L1 of the power supply. 3. One end of the transformer was connected to L2 of the power supply, and the other end was connected to the auxiliary coil of the two-phase motor. 4. A starting reactor is connected between the main coil and the auxiliary coil of the two-phase motor. 5. Ground the casing of the two-phase motor. Read more exciting novels for free
How to connect the five wires of a single-phase motor to the capacity?
In the five-wire single-phase motor, three wires were the main wire, one was the starting wire, and one was the auxiliary wire. Generally, the following methods can be used to connect the voltage: First, distinguish the main winding, the secondary winding, and the starting line of the motor. Generally speaking, the main winding was connected to the power supply, and the secondary winding was connected to the voltage. For the case of five wires, it could be judged by measuring the resistance value first. The two wires with the highest resistance value were connected to the capacity (one of them was the secondary winding wire, and the other was the auxiliary wire such as the starting wire), and the one with the lowest resistance value was connected to the power supply of the main winding wire. If you want to change the direction of the motor, you can swap the specific wires in the motor's lead wire (such as swapping the wire connected to the transformer with other related wires), but the specific operation still needs to be carefully adjusted according to the actual structure and function of the motor. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to connect the single capacity of the motor?
The connection method for a single-phase single-phase motor was as follows: First, measure the resistance value between the wires of the motor. The two wires with a large resistance value were connected to the voltage, and the two wires with a small resistance value were connected to the power supply. For example, if the red and blue resistance 381, the red and yellow resistance 828, and the yellow and blue resistance 447 are measured, the red and blue 381 + yellow and blue 447 = red and yellow 828 can be used to determine that the motor is normal. The red and yellow wire is connected to the voltage, and the red and blue wire is connected to the power supply. In addition, if it was a single-phase single-phase small motor with three terminal posts, the middle terminal would be connected to the neutral line, and the other two wires would be connected to the 10 and 12 of the universal switch, the other end would be connected to the two ends of the voltage, and the other end would be connected to the 2 and 4 of the universal switch. At the same time, for some electric machines, the starting winding and the running winding can be judged according to the characteristic that the starting winding has a much larger direct current resistance than the running winding (the general running winding direct current resistance is a few Ohms, and the starting winding direct current resistance is ten Ohms to dozens of Ohms), and then the connection is made. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single-phase 6-wire single-capacity motor
Single-phase 6-wire single-capacity motor, in which 6 wires contain 3 coil, can connect one end of the 3 coil together, the remaining 3 wires, one is connected to the live wire, one is connected to the capacity, and one is connected to the neutral wire. Of the six leads, two were for the main coil, two were for the auxiliary coil, and two were for the centrifugal switch. The three parts, namely, the transformer, the centrifugal switch, and the starting coil, had to be connected in series to form a circuit, which was connected in parallel with the main coil to supply power. If the direction was wrong, the two ends of the main coil could be reversed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single-phase 15,000 W motor with a large capacity
For the choice of 15kW-single-phase motor, the first thing to do was to determine the type of the motor. Generally, the choice could be an Electrolyte or Metal Film Condenser, which was suitable for high-power single-phase motor. Then, through the formula,(C = I / (2 Pi f Delta V)/), where/(C/) represents the size of the capacity.(Unit is Farad [F]),[I] represents the current when the motor is running (Unit is Ampere [A]). According to experience, 1,000,000 volts is about 6A, and 15,000,000 volts is about [15×6 = 90A].[F] represents the frequency of the power supply (Unit is Hertz [Hertz]), and [Delta V] represents the difference between the rated voltage of the voltage and the power supply voltage (Unit is Volts [V]). At the same time, for the 1. 5kW-single-phase motor, the operating capacity should be 45 - 60uF, and the starting capacity should be 100 - 250uF times of the operating capacity. According to experience, the operating capacity of the 1kW-single-phase motor should be 30 - 40uF, and the starting capacity should be 2 - 4 times of the operating capacity. It can be used as a reference for the selection of the 15kW-single-phase motor. In addition, the voltage endurance value of the capacity is greater than or equal to 1.5 times the power supply voltage. Generally, 400V/450V is selected. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single-phase running capacity induction motor
Single-phase induction motor is a type of single-phase induction motor. In this kind of motor, the auxiliary winding and the working transformer connected in series with it were always connected to the power supply and participated in the operation of the motor, regardless of whether it was the starting process or the operation process of the motor. During the design, the main consideration was that the motor should have the best power index in the rated operating state, which would weaken the starting performance requirements of the motor, so the starting moment was relatively low. Its power range can range from a few volts to a few hundred volts, for example, there are products with different power levels such as 0.55kw and 120W. It is suitable for electrical appliances, special compression pump and small machine tools that require high performance. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single-phase motor how to match the formula of the capacity
There are several formulas for the matching of single-phase motor with the following: 1. Calculating the working capacity according to the power: \(GC = 1950I/U\cos_\)(microfarad),\(I_) is the motor current,\(U_) is the single-phase power supply voltage, and\(\cos_\) is the power factor (take\(0.75_)). If the single-phase power is taken as\(220Vdm_), then\(GC = 1950P/(U ^2)\cos_= 1950*P/(220*220)*0.75 = 0.03*P(uF), and\(P_) is the motor power. After calculating the working capacity, the starting capacity shall be taken as 1 - 4 times of the working capacity. 2. <<C = 2 <fL>/<^2>>, where <C> is the capacity of the transformer,<f> is the frequency of the power supply,<L> is the induction of the motor, and <<^2>> is the power factor. 3. When the transformer is damaged and the labeled parameters are unknown, it can be selected according to the calculation of C = 8fs (uF), where C is the matching capacity (unit is microfarad); J is the current density of the motor starting winding (generally choose 5 - 7A/square); s is the cross-section area of the starting winding wire (square). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Method for connecting single-phase motor to starting capacity
The following are some ways to connect a single-phase motor to the starting capacity: 1. ** Connection according to resistance value **: connect the two wires with the largest resistance value to the voltage, and connect the two wires with the smallest resistance value to the power supply. For example, the red and yellow wires were connected to the electric capacity, and the red and blue wires were connected to the power supply (the red and blue and yellow and blue winding values were not equal, and the motor could not be used for positive and negative rotation). 2. ** Connecting according to the letter of the binding post **: The letters U1 and U2 of the binding post are connected to the two outgoing lines of the running winding, V1 and V2 are connected to the two outgoing lines of the centrifugal switch, W1 and W2 are connected to the two outgoing lines of the starting winding, and the starting capacity is connected to W1 and V2. After connecting U1 and W2 with the connecting piece, connect them to a power cord. After connecting V1 and U2 with the connecting piece, connect them to another power cord. 3. ** For the double-value capacity motor **: The double-value capacity induction motor has a starting capacity and a running capacity. The two capacity are connected in parallel and then connected to the starting winding. 4. ** Consider the positive and negative connection **: The starting capacity is connected in parallel to the main winding and the secondary winding (the two wires with the largest resistance value among the three wires). One of the two wires is connected to the power supply line, and the common end is connected to the power supply neutral line. If this rotation is recorded as positive rotation, then when the line is connected to the other wire of the starting capacity, it is reversed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to connect a single-phase motor to a four-wire motor
There were two ways to connect the four wires of a single-phase motor, the star connection and the triangle connection. Star connection is mainly used for low-power motor, starting current is small, but starting moment is also small; triangle connection is mainly used for high-power motor, starting current is large, but starting moment is also large. You can check the label on the motor shell or check the motor manual to determine the motor's connection method. Generally speaking, the star connection is marked with "Y" or "Delta/Y", and the triangle connection is marked with "Delta" or "Y/Delta". It should be noted that among the four wires of the single-phase motor, the main wire is the power supply wire of the motor, and the auxiliary wire is used to start the motor. There were four wires because the single-phase motor needed to be started by a starting reactor or a starting reactor. These starting components needed to be connected to the motor, thus increasing the number of wires in the motor. If the four wires of the single-phase motor were connected wrongly, it might cause the motor to fail to start normally or damage the motor. If you find that the connection is wrong, you should stop using it in time and ask a professional to repair and correct the connection. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to connect a single-phase motor to a transformer
There were different types of single-phase motor, and the method of connecting the voltage to the voltage was also different: 1. ** General Judgment Method **: - The single-phase motor had a main coil and a secondary coil. The resistance of the main coil was smaller than that of the secondary coil. Usually, the connection method can be determined by measuring the resistance between the motor leads. The two wires with the highest resistance were connected to the power source. 2. ** Connection under different starting modes ** - ** Split-phase start type **: suitable for electric fans, air-conditioner fan motor, washing machine and other motor. The auxiliary starting winding is used to assist the starting. The starting moment is not large, and the running speed is roughly maintained at a fixed value. - ** Starting method with centrifugal switch (two conditions)**: - In the first case, when the motor is still, the centrifugal switch is connected. After the power is supplied, the starting capacity will participate in the starting work. When the speed of the motor reaches 70% - 80% of the rated value, the centrifugal switch will automatically trip, and the starting capacity will be disconnected. The starting winding will not participate in the operation work, and the motor will continue to operate with the running winding coil. - In the second case, when the motor is still, the centrifugal switch is connected, and the starting capacity is involved in the starting work after the power is supplied. When the speed of the motor reaches 70% - 80% of the rated value, the centrifugal switch will automatically trip, and the starting capacity will complete the task and be disconnected. The running capacity is connected to the starting winding in series to participate in the operation work. This kind of connection was generally used in places with large and unstable loads such as air condensers, cutting machines, and woodworking machines. 3. ** Connection of the motor with different number of lead wires ** - ** 3 wires of AC 220V induced draft fan (motor as an example)**: First measure the values between the wires of the motor, such as red and blue resistance 381, red and yellow resistance 828, yellow and blue resistance 447. Since red and blue 381+ yellow and blue 447 = red and yellow 828, it can be judged that the starting winding has a high resistance (red and yellow wire) and the running winding has a low resistance (red and blue wire). Then connect the red and yellow wire to the capacity and the red and blue wire to the power supply. - ** Four wires of AC 220V motor (connection method)**: measure the value between each two wires respectively. For example, the resistance value of green and black is 0, the resistance value of red and black is 2.57, the resistance value of red and yellow is 0, and the resistance value of yellow and green is 2.65. The resistance value between green and black and red and yellow is infinite, which means that it is impossible. There are clear values between red and black and yellow and green, which means that there are two separate sets of winding and they are not connected. The yellow and black wires could be connected together as the common end, and the capacity could be connected to both ends of the red and green wires. The common end wire and any of the red and green wires could be connected to the power supply, and the motor with positive and negative rotation could be obtained. - ** AC 220V single-phase double-cap motor **: Pay attention to the selection of starting and running caps. The larger capacity was the starting capacity, and the smaller capacity was the running capacity. After the motor starts, the centrifugal switch disconnects the starting capacity from the circuit. If there is a lack of starting capacity, the motor will be difficult to start or unable to start (often manifested as normal no-load start, but unable to start after loading); if there is a lack of running capacity, the motor can start, but the output power will be reduced (often manifested as reduced load capacity). Generally, the starting capacity was connected in series to the starting winding of the single-phase motor and in parallel with the working winding. In addition, if the motor needs to be reversed, for the above-mentioned connection method, it is only necessary to swap the wires of the corresponding winding. In some cases, the 1 - 2 wire swap or the 3 - 4 wire swap can complete the reversal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
single-phase motor single-capacity reversing switch connection method
For the single-phase motor single-capacity reversing switch connection, it must first be clear that the single-phase motor has a main winding and a secondary winding, and there is a starting capacity between the secondary winding and the main winding. Generally speaking, the resistance value between the three wires of the single-phase motor was measured with a Multimeter. The two wires with the largest resistance were connected in parallel with the other wire (the common end) connected to the power supply. Then, the resistance between the common terminal and the wire connected to both ends of the voltage was measured with the electric block of the Multimeter. The end with a slightly larger resistance was connected to the other end of the power supply, so that the positive rotation could be achieved. To reverse the connection, the power cable connected to one end of the voltage could be changed to the other end. In terms of the reversing switch connection, the reversing switch had different terminal posts. Taking the common connection method as an example, some of the terminal posts of the reversing switch were connected to the power supply, and some of the terminal posts were connected to the motor winding. The terminal in the middle could be connected to the power supply, and the terminal connected to the main winding and the secondary winding of the motor could change the connection mode through the internal structure of the reversing switch during forward and reverse rotation, thus changing the direction of the current to achieve forward and reverse rotation. For example, during forward rotation, the circuit was connected according to a phase sequence, so that the current flowed through each winding of the motor in turn to achieve forward rotation; when it was reversed, the connection inside the reverse switch changed, changing the current phase sequence in the winding, and then realizing reverse rotation. However, there may be differences in the connection of different models of reversing switch, and the actual operation should be carefully judged. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>