The calibrated current refers to the continuous operation of the electrical equipment for a long time, and the current when the stable temperature reaches the maximum allowable temperature becomes the calibrated current of the equipment.

Rated current refers to the current when the electrical equipment runs at rated power under rated voltage. It can also be defined as the current that electrical equipment can work continuously for a long time under rated environmental conditions (ambient temperature, sunshine, altitude, installation conditions, etc.). The current when the appliance is working normally should not exceed its rated current.

The meaning of the calibrated current is completely different from the meaning of the rated current. For example, there is always a word for current on the energy meter such as 10 (20) A. 10 means that the calibrated current of the meter is 10A and the maximum rated current is 20A. The current 20 in parentheses is called the rated maximum current, which is the maximum current value that can make the energy meter work normally for a long time, and the error and temperature rise fully meet the specified requirements.

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