What does an accuracy check of a split core current transformer look like?

The split core current transformer can convert high voltage into low voltage and large current into small current for measuring or protecting the system. What is its accuracy check like? The following is the editor's summary:

1. Error breakdown The split current transformer test generally uses the comparison of the measured current and the standard current, and the secondary current difference is the error. This inspection method is called the comparison method. The standard product requires two levels higher than the measured product, and the error can be ignored at this time. If the standard product is only one level higher than the measured product, the error of the test result plus the error of the standard product should be considered.

2. Calibration: In addition to the standard product and the calibrator, there should be a current booster that can provide the primary current for the split current transformer, a voltage regulator, and a load that can adjust the current of the current booster.

3. Usually, a calibrator is used to measure the quantity. Since the product calibrator measures the ratio of the current difference between the measured product and the standard product to the secondary current, the requirements for the calibrator are not high. What level of split current transformer can be checked is basically determined by the standard product.

In order to transmit electrical energy, split core current transformers often use AC voltage and high current circuits to deliver electricity to users, and this electricity cannot be directly measured by instruments.