How to choose the right current transformer?

1. Accuracy

In most applications, the measurement accuracy has a direct impact on the overall system efficiency. The accuracy of power calculation obviously depends on the accuracy of current transformer.

2. Linearity

The linearity of a current transformer refers to the stability of its characteristics over the entire range of operating modes. The high linearity of the simulated induction component is essential for accurate measurement of primary currents over a wide range, especially at low current values.

How to choose the right current transformer?

3, drifting

The drift of the CT is related to the persistence of reading timeout independent of the initial system calibration. Some changes in its characteristics may be caused by ambient humidity and temperature or component aging.

4, integration,

Because it is self-powered, the CT does not require any wiring other than the two output lines connected to the main power monitor device.

5, phase shift

The accuracy of the actual effective power or energy calculation is not only related to the accuracy and linearity amplitude of the AC current and voltage transformers, but also related to the possible phase shift between the measurements of the two correlation values.

6, the price is

The cost of current transformers and their installation and maintenance should be considered.