YS7114 three-phase asynchronous motor

When it comes to the YS7114 three-phase asynchronous motor, it is surely familiar to everyone. This is a commonly used electromechanical product and can be applied in multiple industries, such as reducers, oil pumps, fans, etc. This motor has quickly won consumers' favor due to its own advantages. Its casing is made of aluminum, featuring light weight and fast heat dissipation, making it a good helper in your production. Of course, if you need non-standard products, such as non-standard voltage or non-standard shaft, we can also customize them for you. You only need to provide specific dimensional parameters. Everything is for the actual needs of customers. If you have any questions, you can communicate with us, and we will wholeheartedly provide services for you. Thank you!
Introduction to Main Components of the Motor

The YS7114 three-phase asynchronous motor is structurally designed to be a versatile power equipment suitable for various environmental conditions. This type of motor is supported by general components and various special parts with different characteristics. The main components of the motor include: frame, stator, rotor, bearing, junction box, etc. These assembly parts are basically general components, with the only differences being the length of the frame and the bearing size. The ventilation cover is a non-general component, which can be redesigned according to user requirements, such as noise control, different protection levels, and different ventilation methods.
Frame and Stator: The frame is a rigid box welded by multiple steel plates. The stator core is laminated with mutually insulated cold-rolled silicon steel sheets. At both ends and the back of the core, steel pressure plates and rib plates fix it in the middle, forming an integrated stator core assembly with ventilation ducts. The prefabricated stator coil windings are placed in the core slots. The ends of the coil windings are firmly fixed together with end hoops and binding ropes, and undergo vacuum pressure impregnation treatment to withstand the impact of strong electromagnetic forces generated during motor startup or under certain accidents. Generally, there are three stator lead wires, and according to user requirements, there can also be four or six lead wires. The lead wires are marked in the main junction box; the main lead wires are marked as U, V, or U1, V1, W1, and the neutral point lead wire is marked as N or U2, V2, W2.
Rotor: The rotor consists of a rotor core, a drive shaft with radial rib plates, and a rotor winding. The core has ventilation ducts, formed by laminating mutually insulated cold-rolled silicon steel sheets, and is fastened in the middle with high-stiffness end plates or winding supports to form an integrated structure.
The cage rotor windings are of two types: die-cast aluminum and copper bar. Both are firmly fixed in the rotor core slots. The guide bars and end rings of the die-cast aluminum rotor are cast as one piece; the copper bars are connected to the end rings using medium-frequency induction welding, with silver-copper alloy welding rods filling the gaps between the copper bars and the end rings.
The wound rotor winding is made of copper rectangular bars wrapped with insulation. The winding is firmly fixed in the core slots, and the ends of the winding are bound with non-magnetic tapes to prevent damage to the winding ends during operation or in case of a runaway accident. A rotor slip ring device is set at the non-shaft extension end, which is connected to an external starting resistor via the brushes on the brush holder and the rotor junction box.

Ventilation of the YS7114 three-phase asynchronous motor
All motors are equipped with self-ventilation devices, regardless of whether there is a ventilation cover or the form of the ventilation cover. Usually, the cooling of the motor enters from the sides of both ends of the frame or from both end faces of the ventilation cover. Part of the air is forced by the fan into the ends of the stator windings and then discharged to the back of the stator core. Another part of the air passes through the air duct between the rotor core and the shaft, enters the radial ventilation duct of the rotor, reaches the air gap, and then passes through the ventilation duct of the stator core to be discharged from the back of the stator core. The two parts of discharged air mix and then are discharged to the external atmosphere from the exhaust ports in the middle of both sides of the frame or the exhaust ports on both sides of the ventilation cover. The specific situation will vary slightly according to different cooling methods of the motor.
Motor Installation

The YS7114 three-phase asynchronous motor undergoes electrical and mechanical tests before leaving the factory, and is packaged and shipped only after obtaining a qualification certificate. Random documents are included in the packaging; for motors with wound rotors, spare parts are also provided for users to replace. If any unexpected damage is found to the motor after arrival, you must contact the transportation department and the sales service manager of Lanzhou Lanzhou Electric Motor Co., Ltd. nearby, and request a representative to participate in the joint unpacking inspection. If unexpected damage is found, you must immediately contact the transportation department, and further inspection is required before installation.
Under normal circumstances, there are four lifting lugs on the motor frame, which can be used to lift the entire motor. If wire rope support rods are not used, the angle between the wire rope and the horizontal direction should be greater than 60 degrees. It is strictly forbidden to lift the entire motor without using the lifting lugs.
If the motor cannot be installed in time, it should be placed in a dry and clean warehouse. The environment with suspended solid particles such as dust, corrosive gases such as acid, alkali or salt spray, excessively high or low temperature, excessive humidity or severe changes is very unfavorable for the storage of the motor. It is best not to cover the motor with plastic cloth for a long time; you can use a waterproof canvas cover to prevent dust from entering. If the motor is equipped with a heater, to prevent condensate water and moisture inhalation, you can energize the heater. In addition, you can also energize several 100W or 150W bulbs inside the casing. When the storage time is too long, the insulation resistance should be measured regularly. The minimum storage temperature is 5 degrees Celsius.
Work Procedures Before Installation. The installation requirements for the YS7114 three-phase asynchronous motor must follow strict procedures, because the performance of the motor largely depends on its adjustment and the stability of the foundation. Therefore, before installing the motor, the following points must be checked to prevent failures during operation.

Appearance and Mechanical Inspection: If there is any damage or doubt about the motor, a report should be submitted immediately.
Determine the center point of the foundation to establish the center line of the unit and the elevation of the foundation surface.
Check the correct positions of the anchor bolts, cables, wires, pipelines, busbars, air ducts, etc. and whether their sizes are appropriate according to the outline drawing, so as to correctly install the motor and its accessories.
Check whether the size, position and top height of the anchor bolts are correct according to the outline drawing. Make some flat or wedge-shaped shims, which will be used to lift the motor when installing it on the foundation, so that the motor will not be skewed and it is conducive to adjusting the level.