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- 2024-12-24What is the difference between self-cooling variable frequen
Motor self-cooling means that the motor rotor has its own fan blades, and the fan blades rotate together during the operation of the motor to play a cooling role. Forced cooling is forced cooling by the motor with an external cooling fan. ...
- 2024-12-23Motor should be equipped with a moisture-proof heating devic
During the shutdown period of the motor, on the one hand, the moisture in the environment will invade the inner cavity of the motor, and condensation will continue to accumulate on the surface of the winding; on the other hand ...
- 2024-12-20Notes on bearing lubrication
Most small motors have adopted double-sealed bearings (with "ZZ" after the bearing model). This type of bearing is pre-oiled and does not need to be re-oiled. ...
- 2024-12-19Why can't the motor be started frequently?
The starting current of the motor is 4 to 7 times the rated current. Such a large starting current will cause the motor to heat up seriously ...
- 2024-12-18What is the difference between NEMA4 and NEMA4X?
NEMA4 (National Electrical Manufacturers Association 4): outdoor or outdoor installation, dustproof, rainproof, splashing water, water pipe spray and external freezing and other damage. ...
- 2024-12-17Effect of motor speed change on bearing temperature
The heating of motor bearings has a certain relationship with the speed of the motor. When selecting motor bearings, engineering and technical personnel will check the maximum and minimum speeds of the motor bearings. ...
- 2024-12-16Why does the motor shaft breakage problem occur?
Any problem with a product is likely to be related to manufacturing or use. For example, the motor shaft breakage problem: On the one hand, the motor manufacturer will take necessary measures in the shaft design and manufacturing process, bu ...
- 2024-12-13The necessity of grounding three-phase motors
Three-phase motors are motors that use AC power and require three power cords for operation. Under normal circumstances ...
- 2024-12-12Causes and solutions for the spot on the transformer housing
The transformer housing is charged mainly because there is a voltage difference between the housing and the ground, which causes a high potential on the housing. This voltage difference may be caused by insulation damage between the housing ...
- 2024-12-11Common faults of motor cores
1. Short circuit between silicon steel sheets caused by insulation damage; 2. Loose core caused by poor tightening and motor vibration; ...
