YS7132 Three-Phase Asynchronous Motor

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Mechanical Installation Inspection
Check the alignment of the equipment before commissioning:
Review the alignment inspection report to ensure the equipment is accurately aligned in accordance with the alignment specifications.
The alignment requirements must be included in the commissioning report. Check whether the motor is correctly fixed on the foundation:
Inspect the foundation for cracks and other general conditions
Check whether the installation bolts are tightened. Perform additional inspections as needed:
Verify that the lubrication system has been commissioned before the rotor rotates.
If possible, rotate the rotor by hand to ensure it can rotate freely without any abnormal noise. Inspect the assembly of the main outlet box and cooling system
Check the connections of oil pipes and cooling water pipes, and check for leaks while the motor is running. Check the pressure and flow rate of lubricating oil and cooling water.
Motor Overview
The power level, installation dimensions, and electrical performance indicators of the three-phase asynchronous motor all comply with relevant technical standards formulated by the state or our company's standards.
This motor features high efficiency, energy saving, low noise, small vibration, compact structure, safe and reliable operation, and convenient installation and maintenance. It is suitable as a prime mover for various general-purpose machinery such as fans, compressors, water pumps, mills, and crushers.
Structural Overview

The YS7132 three-phase asynchronous motor consists of key components including a stator, rotor, frame, bearings, ventilation cover, air-air or air-water cooler, and outlet box.
The motor frame and ventilation cover are made of steel plate welded structures or castings. The outlet box is made of steel plate, castings, or other materials; the end cover is made of steel plate or castings. The protection level of the outlet box is generally IP44, IP54, or IP55.
The stator and rotor cores are laminated with silicon steel sheets, and the stator coils are Class F insulated. The rotor uses cast aluminum or copper bars.
The motor bearings adopt rolling bearing or sliding bearing structures. The grade of lubricating grease (oil) is detailed on the motor bearing label.
Unless otherwise specified, the installation dimensions of the motor are industry standard sizes; unless otherwise specified, the external dimensions are company standard sizes.
Transportation

The YS7132 three-phase asynchronous motor will be protected with the following measures before shipment from the factory. Whenever the motor is relocated to a different use occasion or moved, protective measures similar to the factory state shall be adopted.
For motors with sliding bearing structures, the rotating shaft and bearings are equipped with transportation fixing devices.
For sliding bearings: Flush all sliding bearings with lubricating oil and drain the lubricating oil. All oil inlet and outlet ports and oil pipes shall be plugged with plugs to achieve better corrosion prevention effects.
For air-water coolers: Drain the air-water cooler and plug the inlet and outlet of the cooler with plugs.
The machined metal surfaces (such as the shaft extension end) are coated with anti-corrosion coatings for corrosion prevention.
During transportation and storage, the motor shall be kept in a condition where the packaging box is not damaged or damp. Stacking is not allowed to prevent tipping during transportation. Disassembly and assembly for transportation are not permitted (except for other transportation contracts).
Hoisting the Motor
Before hoisting the YS7132 three-phase asynchronous motor, please ensure that appropriate hoisting equipment is available and that operators are familiar with hoisting operations. The equipment weight is shown on the nameplate, external dimension drawing, or packing list.

Note: Please hoist the entire equipment using dedicated hoisting rings or lugs. Do not use any other small hoisting rings or lugs on the equipment to avoid damaging the motor.
Note: Before hoisting, please check whether the hoisting ring bolts and hoisting rings on the equipment frame are intact. If the hoisting rings are damaged, they cannot be used.
Note: For small motors equipped with hoisting ring bolts, the hoisting ring bolts must be tightened before hoisting.
Storage

After the YS7132 three-phase asynchronous motor is delivered to the owner's site, if it is not installed immediately, it shall also be uncrated, cleaned, and inspected as above. The exposed metal surfaces shall be re-coated with sealing materials such as anti-rust oil. After inspection and sealing, the motor shall be re-crated and sealed in a clean and tidy area, and then stored in a warehouse. The warehouse shall have dry air, good ventilation, and the ambient temperature shall be maintained above 5℃ and below 40℃. It shall have protection measures such as moisture proof, dust proof, and insect prevention. The motor shall not be stacked to avoid tipping. Necessary anti-rust protection measures shall be taken for the motor shaft extension, slip ring, and exposed fasteners. Every six months, the motor shall be uncrated for inspection to check whether the temporary sealing has deteriorated, so as to timely improve the storage conditions.
Wiring
Verify that the nameplate data matches the power supply connected to the motor. The specifications of the power supply cable shall be selected according to the voltage level, current size, and power supply distance to ensure power supply safety.
The stator is connected in Y or Δ as specified on the nameplate. The three terminals K, L, M of the wound rotor are connected to a frequency-sensitive rheostat or other starting resistors. The wiring must be firm and reliable.
After wiring, remove debris from the outlet box and the motor, re-tighten all fasteners, and ensure the grounding wire is firm and reliable.
Check whether the creepage distance (minimum air gap) of exposed conductors meets the requirements, whether the porcelain insulators of the motor wiring terminals and the rotor wiring posts are loose, and whether the grounding of the frame and outlet box is firm.
The external forced air cooler is equipped with a small ventilation fan. When wiring, verify that it matches the voltage and connection method on the motor nameplate.
Test Start
Before the test start, inspect the motor and auxiliary equipment to confirm that all necessary work has been completed.

When the YS7132 three-phase asynchronous motor is used for the first time, after starting, it shall run idly for 2-3 hours. After confirming normal conditions, load can be applied. During this period, pay attention to any abnormal noise, vibration, or overheating, and check whether the three-phase currents are balanced. If any abnormal phenomenon is found, stop the motor immediately for observation, check the installation status, and eliminate the abnormal phenomenon. The rotation direction of the motor shall be consistent with the rotation direction of the driven machinery. The motor allows direct-on-line starting, and the terminal voltage during starting shall not be lower than 85% of the nameplate rated value. When the sliding bearings of the motor use a thin oil station for circulating lubrication, the thin oil station shall be put into operation first and reach a stable working condition before connecting the motor power supply.