1SS361,LJ(CT

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1SS361,LJ(CT application field and working principle)

CT (Current Transformer) is a kind of current sensitive electric appliance, which is composed of an electric core, an iron core and a measuring coil. It is usually used to measure the high voltage and electric current in the circuit, and achieve the purpose of protection. This paper mainly introduces the application field and working principle of CT.

Application fields of CT

CT is widely used in industry, such as power distribution, power automation, measuring instruments, and protection equipment. It is used in large and medium-sized power supply systems to measure the current of high voltage power distribution lines and isolated grounding calibrations, and even transform high-voltage and large-current AC into standard fourth-order low-tension current, which can be connected to measuring instruments, recorders and protection devices.

Working principle of CT

CT is an electromagnetic induction device, which uses a primary coil with a high current to generate a magnetic field, and induces a output voltage on the high-voltage line through a secondary coil. The secondary coil winding is self-connected and predetermined, so that the current transformation ratio of CT can be obtained. When the current changes in the primary coil, the secondary coil voltage also changes, thus achieving the detection and measurement of current.

Conclusion

CT is an important device for measuring, recording and protecting currents in many electrical device circuits. It has powerful capabilities in detecting and measuring high voltage current, grounding calibration and other aspects, and plays an irreplaceable role in the electrical industry.

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