JW5622 three-phase asynchronous motor

JW5622 three-phase asynchronous motors must seize development opportunities and strive to provide customers with high-quality, affordable and genuine products. The dominance of foreign brands will not last forever; one day we will catch up and surpass them.
The urgency of "making rapid progress or falling behind" stems from a profound understanding of the times and trends.
Looking outward, "the world today is undergoing major changes unseen in a century, and scientific and technological innovation is a key variable in this process" and "competition around scientific and technological commanding heights is extremely fierce." At the same time, external suppression and containment may escalate at any time, and the risks of "decoupling and breaking industrial chains" and "building high walls to isolate" are intensifying. There is an urgent need to accelerate high-level scientific and technological self-reliance and self-improvement, so as to seize historical and development initiatives.
Looking inward, China's path of modernization has reached a critical juncture. Industrial transformation and upgrading and the transition between old and new growth drivers are facing challenges. Seizing the opportunity of productivity improvement brought by this round of scientific and technological revolution and industrial transformation will promote the transformation of China's scientific and technological and industrial development from a "follower" to a "leader."
Scientific and technological innovation plays a more prominent role in promoting high-quality development and advancing Chinese-style modernization. It is an urgent requirement and an inevitable choice to support the great cause of national rejuvenation with the "strong muscles and bones" of high-level scientific and technological self-reliance and self-improvement.
Motor Installation Methods
1. Couplings, spur gears, and belts are allowed for JW5622 three-phase asynchronous motors.
2. Pulley transmission is applicable, but it is not recommended for 2-pole motors above 4kW and 4-pole motors above 30kW. If a small pulley is selected, the transmission range of V-belts can be expanded. For the fan end of double-shaft extension motors, only couplings are allowed for transmission.
3. When using pulley transmission, the shaft centerline of the motor and the load centerline must be parallel, and the centerline of the pulley must be perpendicular to the shaft centerline. When using coupling transmission, the shaft centerline of the motor must coincide with the load centerline.
4. For vertically installed motors, no other axial load devices are allowed on the shaft extension except for pulleys (or loads equivalent to ordinary pulleys).
5. The motor installation should ensure good ventilation and cooling conditions, and it cannot be used in places exposed to direct sunlight or rain.
Motor Operation
1. The motor should be properly grounded. There is a grounding device at the lower right of the junction box. If necessary, the motor's foot bolts or flange fastening bolts can also be used for grounding.
2. There are 6 terminals on the motor's terminal board, marked with the following symbols:
3. Connect according to the connection method (Δ or Y) specified on the nameplate. Please connect correctly according to the wiring diagram. When the power phase sequence A, B, C corresponds to the terminal marks U1, V1, W1 respectively, the motor rotates clockwise when viewed from the shaft extension end. Changing the power phase sequence will reverse the motor's rotation direction.
Pre-installation Preparation
1. Before unpacking the JW5622 three-phase asynchronous motor, check whether the packaging is intact and free of moisture.
2. After unpacking the motor, carefully remove dust and anti-rust layer from the motor.
3. Check whether the motor's nameplate data meets the requirements.
4. Carefully check whether any parts are loose or detached during transportation.
5. Measure the insulation resistance with a 1000V megohmmeter (or other resistance measuring instruments). The value should not be less than 5 megohms. Otherwise, the stator winding should be dried, and the drying temperature must not exceed 120°C.
Motor Storage and Transportation
1. JW5622 three-phase asynchronous motors should be stored in a dry environment to avoid sharp changes in ambient temperature.
2. Motors should not be stacked too high during storage to avoid damaging the packaging of lower-layer motors, and avoid tilting or placing upside down.
3. If the motor is stored in a humid environment for a long time, confirm before use that the motor's insulation resistance is greater than 1 megohm. If it is lower than 1 megohm, it needs to be dried. If it still cannot reach 1 megohm after drying, the motor must be sent for repair.
4. After long-term storage, check whether the motor's bearings are rusted. If rusted, replace them with new ones. At the same time, add new lubricant of the rated weight. If the motor has not been used for more than 1.5 years during storage, replace with new lubricant before use.
Motor Maintenance and Repair
1. The operating environment should always be kept dry, the motor surface should be kept clean, and there should be no dust, fibers, etc. blocking the air inlets.
2. When the motor's thermal protection and short-circuit protection activate continuously, find out whether the fault comes from the motor, overload, or the protection device's setting value being too low. The fault must be eliminated before putting the motor into operation.
3. Ensure good lubrication of the motor during operation. Generally, lubricant should be added or replaced after about 5000 hours of operation (sealed bearings do not need lubricant replacement during their service life). If bearing overheating or lubricant deterioration is found during operation, replace the lubricant in time. When replacing the lubricant, remove the old lubricant, clean the bearing and the oil groove of the bearing cover with gasoline, then fill 1/2 of the cavity between the inner and outer rings of the bearing with ZL-3 lithium-based grease (for 2-pole motors) or 2/3 of the cavity (for 4, 6, 8-pole motors).
4. When the bearing reaches the end of its service life, the motor's vibration and noise will increase significantly. Replace the bearing when the bearing's radial clearance reaches the following values during inspection.
5. When disassembling the JW5622 three-phase asynchronous motor, the rotor can be taken out from either the shaft extension end or the non-shaft extension end. If it is not necessary to remove the fan, it is more convenient to take out the rotor from the non-shaft extension end. When pulling out the rotor from the stator, be careful not to damage the stator winding or insulation.
6. When replacing the winding, record the original winding's form, size, number of turns, wire gauge, etc. If this data is lost, request it from the manufacturer. Randomly changing the original designed winding will often worsen one or more performance indicators of the motor, or even make it unusable.