Permanent magnet DC motor for switch cabinet are used frequently in today's life, and require a variety of processing tasks before use, including stable magnetic processing. The steady magnetic processing refers to the demagnetization effect that may occur in advance by artificial pre-adding, artificially determining the position of the starting point of the return line, so that the permanent magnet DC motor of the switchgear is in the prescribed or expected motion state, and the starting point of the return line is not Then fall again.
The permanent magnet DC motor of the switchgear is used as the main power source for the drive. The application field is relatively wide. It is very important to understand the stable magnetic treatment of this equipment in order to make it work better in various industries and to exert its functions. In addition, its normal use affects the progress and effect of the entire operation, so in addition to the use of specifications, we must pay attention to some operational details.
If the product is not specified, in general, permanent magnet DC motors for switchgear cabinets are not allowed to be reversed at the rated voltage, otherwise the permanent magnets will be demagnetized; if it is necessary to operate in this way, the current limit should be added. Resistance to limit current too large.
Pay attention to the demagnetization of the permanent magnet caused by excessive current, temperature change and magnetic circuit opening during disassembly and assembly. Especially for AlNiCo permanent magnet motor, magnetic short circuit protection should be applied to the permanent magnet magnetic circuit during disassembly and assembly. Otherwise, after demagnetization Also magnetized. When replacing the brush, clean the surrounding charcoal dust and clean the commutator with alcohol and gasoline. When replacing the new brush, pay attention to the first run-in.