It is perfectly acceptable to mix current transformers from different manufacturers, as reputable large manufacturers follow national standards in their production and technical requirements. However, the following issues should be noted during use:

1. The polarity should be consistent with the original transformer.

2. The model and installation dimensions should match.

3. They should pass the power frequency AC withstand voltage test.

4. The transformation ratio should be the same.





Therefore, as long as the specifications and parameters of the current transformers are consistent, they can be used interchangeably.