Which parts of permanent magnet AC contactor need to be maintained?
Electrical equipment at the same time, to a certain degree of maintenance of the machine to ensure its service life, then the permanent magnet AC contactor which parts need to be maintained?
(1), external maintenance:
1. Check whether the fastener has loose phenomenon, especially the conductor connection part, to prevent contact loosening and fever;
2. cleaning of external dust;
(2), contact system maintenance:
1, check dynamic, static contact position is right, three-phase is closed at the same time, if there is a problem should adjust the contact spring;
2, check the auxiliary contact movement is flexible, contact stroke should conform to the specified value, check contact there is no loosening phenomenon, if any, should be repaired or replaced in a timely manner.
3, check the contact wear degree, wear depth should not exceed 1mm, contact has burning loss, when the opening welding off, must be replaced in time; The use of sandpaper is not allowed when cleaning contacts, and plastic files should be used.