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. Read more exciting novels for free
Single-phase 4.5 Kilowatt motor connected with large starting capacity
According to the relationship between the starting capacity and power of a single-phase motor, the starting capacity value corresponding to a 4.5-kilogram motor was not directly mentioned in the existing single-phase motor starting capacity and operating capacity power comparison table. However, according to the usual situation, the running capacity can be estimated to be 2 - 3uF per 100W. 4.5 Kilowatts is 4500W, and the running capacity is about 4500 div100 ×(2 - 3)=90 - 135uF. The starting capacity is usually 2 - 3 times the running capacity, so the starting capacity is about 180 - 405uF. At the same time, the working capacity can also be calculated according to the formula of GC = 1950I/UcosPi (micro-Farad)(I is the motor current, U is the single-phase power supply voltage, cosPi is the power factor, take 0.75), and then the starting capacity can be determined according to the starting capacity of 1 - 4 times the working capacity. However, since the current value is not given, it cannot be accurately calculated. In summary, the starting capacity of a 4.5 Kilowatt motor was about 180 - 405uF. <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 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>
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>
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>
400W single-phase motor, reversing
The principle of single-phase motor reversing is as follows: single-phase motor has a main winding (working winding or running winding) and a secondary winding (starting winding). There is a starting capacity between the secondary winding and the main winding. For some small load single-phase motor, if the two winding are exactly the same, they can be exchanged with each other; but most single-phase motor with a larger load (such as agricultural motor), the secondary winding coil is thin, the number of turns is large, and the resistance is large. In this case, as long as the head and tail connection of one of the two winding can be reversed, the exchange of power supply L/N is invalid. For the operation of the positive and negative transfer wire of the 4 Kilowatt single-phase motor: First of all, the main and auxiliary winding of the motor must be judged by measuring the resistance value. Usually, the wire diameter of the main winding is larger, the resistance value is smaller, and the number of turns is smaller. If it is a three-terminal connection, 1/3 is the common terminal of the two winding, connected to the L of the AC power supply, and the 2/4 terminal is connected with the starting capacity. If the N terminal of the AC power supply is connected to the terminal 2, then the N terminal is connected to the terminal 4. If it is an agricultural single-phase motor with four terminal (1/2 as the main winding and 3/4 as the auxiliary winding), it should rotate in the opposite direction in the case of forward rotation. The correct way is to exchange the end and tail connection of a winding. In terms of the choice of the capacity, generally, each 100-Watt motor used a capacity of about 2 - 3 microfarads, and the capacity of the 4-Watt motor could be selected accordingly. However, it should be noted that in actual operation, if you are not familiar with the principle and connection of the motor, it is recommended to operate it by a professional technician to avoid damage to the motor or safety accidents. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single phase motor frequency changer
I'm not too sure about the exact meaning of the expression "200 single-phase motor frequency changer". If it refers to the 200-Watt single-phase motor frequency changer, the following is some relevant information: When selecting a 200-Watt single-phase motor frequency changer, the appropriate frequency changer should be selected according to the power, rated voltage, and rated current of the motor to ensure that the output power of the frequency changer matches the single-phase motor. Before installation, the power should be disconnected and installed according to the instruction manual of the frequency changer. Pay attention to the accuracy of the power connection, motor connection and ground connection. It was also necessary to set the parameters according to the characteristics of the single-phase motor and actual needs, such as the rated voltage, rated current, output frequency, etc. After setting the parameters, the no-load trial operation was carried out to ensure the output voltage and frequency of the frequency changer were stable. Then, the load trial operation was carried out to gradually adjust the output frequency and voltage to achieve the required speed and load. When using the frequency changer, pay attention to the use of dry, ventilation, dust-free, non-corrosive gas environment, the use of temperature between 0 ° C- 40 ° C. It was also necessary to ensure that the rated parameters of the single-phase motor matched the output parameters of the frequency changer to avoid overload or underload. Due to the special starting method of the single-phase motor, you can try to adjust the output frequency and voltage of the frequency changer to find a suitable combination of parameters for the motor operation. At the same time, the frequency changer will generate heat when working, and the single-phase motor may have weak heat dissipation ability, so it is necessary to ensure that the motor and the frequency changer have good heat dissipation conditions to avoid excessive heat damage. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single-phase 4kw motor technical parameters
Take the yl100l- 4 single-phase high-horsepower double-value capacity motor used in the concrete cement mortar mixing machine as an example. Its technical parameters are: rated power 4KW, rated voltage 220V, rated current 18A, rotating speed 1440r/min, frequency 50HZ, made of high-quality copper wire. There was also a motor of the same type, with a rated power of 4,000,000, a rated voltage of 200,000, a rated current of 18,000, a rated speed of 1,440,000,000, a rated torgue of 10,000,000, and a frequency of 50HZ. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to check the single-phase motor ground
For the inspection of the single-phase motor ground (insulation to ground), you can disassemble all the connection terminal of the generator's generator's stators and rotators, and then use a universal meter to measure the insulation of the winding to ground. If the insulation to the ground could reach more than 0.5 megohm, it was normal. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>