Answer：Compared with low-voltage motors, local discharge usually occurs in the insulation structure of high-voltage motors, but the size, quantity and location of local discharge depend on the design, material, manufacturing process, quality, operating envi...
Answer：Compared with the motor stator, due to the special nature of the rotor part rotating, the rotor must have the performance of anti-deformation. For example, the rotor slot wedges and radial fixing of the winding ends of the wound rotor motor are to pr...
Answer：For small-sized motors, sealed bearings are mostly used, which do not require special bearing covers. The end covers have shaft holes, and wave springs are placed at the bottom of the bearing chamber during assembly to meet and limit the axial displa...
Answer：The air gap is the space between the stator and rotor of the motor. During the operation of the motor, the stator does not rotate, but the rotor needs to rotate relative to the stator. The air gap is necessary for the operation of the motor; the size...
Answer：A motor factory has manufactured nearly 100 YKK high-voltage motors for customers, with frame sizes ranging from H450 to 710. The heat load was designed to be very low, and the design temperature rise was lower than 68K. However, within less than hal...
Answer：The rotor part of the motor product usually needs to be supported by two sets of bearings, and the rotor is radially and axially positioned relative to the stator. According to different usage requirements, such as load, required rotation accuracy, a...
Answer：The fan is an important wind pressure component of the motor ventilation and heat dissipation system . It compensates for the wind pressure loss when the cooling medium passes through the air path, transports a certain flow of cooling medium to the h...
Answer：From the perspective of the motor itself, the high vibration value of the motor is mainly related to the dynamic balance of the rotor. From the perspective of the motor's external conditions, the installation quality of the motor and the host, t...
Answer：There are many cases where the motor starts and runs at low voltage. At this time, the load should be reduced as much as possible or used intermittently. Generally, the voltage of the motor is allowed to fluctuate within the range of +10%~-5%. For ex...
Answer：From the perspective of determining the responsibility, motor winding failures can be divided into two categories: manufacturing quality and usage problems. Winding turn-to-turn, phase-to-phase and ground faults can basically be attributed to manufac...
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