What should I pay attention to when applying a transformer?

The rated primary current of the current transformer generally selects the current transformer according to the current of 1.2~1.4 times of the line. This is mainly to consider the current transformer and the current meter or electric energy meter and other electrical equipment when the line is overloaded.

The rated primary current of the current transformer cannot be selected too much differently than the actual operating current of the line, which will affect the measurement accuracy of the current transformer.