New things happen every day. To build a loving society, we all need to work together. As long as we are heading in the same direction, difficulties will be overcome. Today, the product we are going to learn about is the YS6332 three-phase asynchronous motor. Although not many customers use this electromechanical product, this model is also indispensable in the 63 series. Only with this model can the models with the 63 frame size be complete. This model has parameters of 370W, 2800 rpm, and 380V. If you need non-standard sizes, you can contact us for communication. We will wholeheartedly provide you with thoughtful service.
Preparations before installation
Before unpacking the YS6332 three-phase asynchronous motor, you should check whether the packaging is intact and whether it has been affected by moisture. After removing the cover, carefully remove the dust and anti-rust layer on the motor. Carefully check whether there is any deformation or damage during transportation, whether the fasteners are loose or fallen off, whether the rotor rotates flexibly, whether the nameplate data meets the requirements, and use a 500V megohmmeter to measure the high-voltage resistance. The insulation resistance should not be less than 1 megohm, otherwise the windings need to be dried, but the processing temperature shall not exceed 120℃.
Installation site and installation foundation of the motor
The altitude of the motor installation site should not exceed 1000m; the installation site for general-purpose motors should be dry and clean, and the surrounding area of the motor should be well ventilated, with a certain distance from other equipment to facilitate inspection, monitoring and cleaning. The ambient temperature should be below 40℃, and strong radiation should be avoided; the installation foundation should be firm and solid, with certain rigidity, and the installation surface should be flat to ensure the balanced operation of the motor.
Inspection before motor startup
1. For a newly installed or three-phase asynchronous motor YS6332 that has been out of service for more than three months, the insulation resistance should be checked before startup, and the measured insulation resistance value should be no less than 1 megohm.
2. Check whether the fastening screws of the motor are tightened, whether the bearing is short of oil, whether the wiring of the motor meets the requirements, and whether the外壳 is reliably grounded or connected to zero.
3. Check whether the screws and pins of the coupling are fastened, whether the belt connection is good, whether the tightness is appropriate, whether the unit rotates flexibly, whether there is jamming, axial movement and abnormal noise, etc.
4. Check whether the rated current of the fuse meets the requirements and whether the installation is firm and reliable.
5. Check whether the wiring of the starting equipment is correct, whether the starting device is flexible, whether the contacts are in good contact, and whether the metal shell of the starting equipment is reliably grounded or connected to zero.
6. Check whether the three-phase power supply voltage is normal, whether the voltage is too high or too low, or whether the three-phase voltage is unbalanced, etc.
7. If any of the above items has problems, they must be completely resolved. Only when the preparations are confirmed to be correct can the startup be carried out.
Precautions during startup
1. The YS6332 three-phase asynchronous motor allows full-voltage startup or step-down startup (using reactors or Y-Δ). However, it should be noted that the full-voltage startup will draw about 5-7 times the rated current, and the torque during step-down startup is proportional to the square of the voltage. When the grid capacity is insufficient, step-down startup is recommended, and when the static load is quite large, full-voltage startup can be adopted.
2. When the power supply phase sequence A, B, C correspond to the wiring terminals U1, V1, W1 respectively, the rotation direction of the motor is clockwise when viewed from the spindle end.
3. The motor should generally be equipped with a thermal protection device, and adjust the setting value of the protection device according to the rated current of the motor.
4. After closing the switch, if the motor does not rotate, you should quickly and decisively open the switch to avoid burning out the motor.
5. After the motor starts, pay attention to observing the transmission device, production machinery and line voltage and current. If there is any abnormal phenomenon, stop the machine immediately to find out the fault and eliminate it before closing the switch and starting again.
6. According to the technical requirements of the motor, limit the number of consecutive startups of the motor. Generally, the number of consecutive no-load startups shall not exceed 2 times when the motor runs continuously to a hot state and then starts after shutdown.
7. When several motors are powered by the same transformer, they cannot start at the same time, and should be started one by one from the largest to the smallest.
Motor operation
1. During the operation of the YS6332 three-phase asynchronous motor, the surface should be kept clean, and the air inlet should not be blocked by dust and fibers.
2. The deviation between the power supply frequency and the rated frequency shall not exceed 1%; the deviation between the power supply voltage and the rated voltage shall not exceed 5%.
3. The current of the motor is not allowed to exceed 10% of the rated current.
4. Motors that work continuously are not allowed to operate under overload for a long time.
5. There should be no intermittent or abnormal noise or vibration when the motor runs under no-load or load conditions.
Motor storage and transportation
1. The storage of the YS6332 three-phase asynchronous motor should be kept dry to avoid drastic changes in the ambient temperature.
2. The storage of motors should not be piled too high, so as not to affect ventilation and damage the packaging of the lower-layer motors.
3. Motors should be prevented from tilting during storage and transportation.
Nameplate of three-phase asynchronous motors
When selecting a three-phase asynchronous motor, you should first understand the nameplate of the motor and learn relevant information. The contents of the nameplate: first, confirm the model of the motor; second, clarify the common parameters such as rated power, voltage, speed, connection method, etc.; third, figure out the important parameters such as protection class, insulation heat resistance class, etc., and ensure that the selected motor has obtained relevant product certifications. Correctly reading the nameplate of the motor is the starting point of the skills for correctly using the motor.
The values of electrical and mechanical quantities indicated on the nameplate of the three-phase asynchronous motor are formulated by the motor manufacturer based on relevant national standards, which are called rated values.
YS6332 three-phase asynchronous motor installation environment requirements
Temperature: -15℃ to 40℃ (cooling measures need to be taken when the temperature exceeds 40℃);
Humidity: relative humidity ≤90% (no condensation);
Environment: no corrosive gas, no dust (install a protective cover when dust protection is required);
Vibration: foundation vibration acceleration <0.5m/s2 (install vibration-damping pads when the standard is exceeded).
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