Points to note for residual current transformers

The magnetic properties of amorphous alloy or ultrafine crystalline alloy cores are less sensitive to mechanical stress than iron-nickel soft magnetic alloys, but they are easily broken after aging treatment, and adequate protection measures should be provided. Therefore, the transformer core should generally be placed in a shell made of high-strength engineering plastics, and appropriate anti-vibration measures should be taken, such as adding anti-vibration gaskets or filling with anti-vibration silicone grease. When designing the structure of residual current protection electrical appliances, it is also necessary to prevent the primary loop conductors or other components from exerting excessive stress on the transformer. According to the structure. The primary circuit is generally designed as one turn, and for electromagnetic residual current protection appliances with a small rated current, it can also be designed as several turns.