Miniature current transformer, which is a miniaturized current transformer, is widely used in power system, power quality monitoring, power instrumentation and other fields. The following is a detailed introduction to the micro current transformer:

1. the working principle

The micro current transformer works on the principle of electromagnetic induction. When AC current is applied, a magnetic field is generated in the coil inside the transformer, and this magnetic field is transferred to another coil through the iron core, thus generating a current in the other coil. By measuring this current, you can get the size of the original current.

2. the main characteristics

1‌. Small ‌ : the size of the miniature current transformer is generally much smaller than the traditional current transformer, easy to install and use in a small space.

2‌. High precision ‌ : with high precision, can accurately measure the current value, small error.

3‌. Low cost ‌ : Compared with traditional current transformer, the manufacturing cost of micro current transformer is lower and the price is more affordable.

4‌. Easy installation ‌ : because of its small size and light weight, the installation process is more simple and quick.

3. Main uses

1. Power system ‌ : used for current measurement and protection, can realize the isolation of the current transformer and the instrument, improve the safety and stability of the system.

2‌. Power quality monitoring ‌ : it can realize the accurate monitoring and analysis of power quality, and provide guarantee for the stable operation of the power system.

3‌. Power meter ‌ : used in conjunction with power meter to measure and display current value.

4‌. Other fields ‌ : also widely used in motor protection, transformer protection, medical equipment, automobile and other fields.

4. Precautions for use

1. Polarity connection ‌ : The polarity of the current transformer must be correctly connected; otherwise, the measurement accuracy will be affected.

2‌. Protective grounding ‌ : The current transformer in the secondary loop should be set with protective grounding to ensure the safety of the human body and the instrument.

3‌. Avoid open circuit ‌ : When the current transformer is running, the secondary winding should not be open circuit, otherwise serious consequences will be caused.

4‌. Avoid interference ‌ : should not be connected with the relay protection device and automatic device, to prevent unnecessary influence on each other.