The miniature current transformer (including the miniature current transformer) has no resistance on the primary side, and the ordinary miniature current transformer is a transformer with a parallel resistance on the secondary side, and the output is current. The miniature current transformer in the miniature current transformer is a parallel resistance on the secondary side, and the output is a voltage. Miniature current transformers are divided into two types of use: multi-turn winding type (inserted on the circuit board) and through-core type.

Here we briefly introduce the influencing factors of miniature current transformers

1. Internal parameters of current transformer;

For miniature Current Transformer, the influence of its internal parameters on its error is still obvious. Including secondary coil internal resistance and leakage reactance.

2. Section size of iron core

The influence of iron core section on the error is mainly as follows: when the iron core section increases, the magnetic flux density of the iron core decreases and the excitation current decreases, so as to improve the ratio difference and angle difference. Under rated conditions, if there is no compensation function, the magnetic flux density of the iron core is already very small, so reducing the magnetic flux density also relatively reduces the magnetic conductivity, so that the excitation current is not much reduced, and the smaller the magnetic flux density, the worse the effect.

3. Coil turns;

The number of coil turns in miniature current transformer will also have a certain impact on the error. Generally, increasing the number of coil turns is to increase ampere turns, and increasing the number of turns can reduce the magnetic flux density.

Hefei Mycoil Technology Co.,Ltd(MCT) specializes in the production of various micro current transformers, which are customized for the majority of users and provide fast and high-quality services.

If you have any interests and need more information, welcome to contact us at any time.

Email:sales003@mycoiltech.com

Sales engineer: Miss Lily