What should I do if the shell of the zero-sequence current transformer is damaged?

1. Replace in time: The damaged shell may cause the internal components to be affected by the external environment, so the shell should be replaced in time.
2. Ensure insulation performance: The new shell must have good insulation performance.
3. Check internal components: When replacing the shell, check whether the internal components are damaged or damp, etc. If there is any abnormality, corresponding treatment is required.
4. Restore connection: After replacing the shell, ensure that all connections are restored to good condition, especially the connection of the secondary winding, to avoid affecting the normal operation of the transformer due to poor connection.