What is a current transformer?

The principle of the current transformer is based on the principle of electromagnetic induction. It is replaced by a large current on both sides to measure the small current on both sides. The current transformer is composed of closed intimate and winding. Its primary side winding turns are very small and are strung in the course of the current to be measured, so it often has all the current flowing through the line and the secondary winding turns are more stringy. Connected to the protection of measuring instruments and circuits.

When the current transformer is working, the secondary measuring circuit is always closed, so the resistance of the measuring instrument and the circuit protection series coil is also very small, which also causes the working state of the current transformer to be closer to Short circuit, the current transformer is actually to convert the primary side large current into the secondary side small current to measure and the secondary side is not openable.

Its working principle is also in the power generation, substation, power distribution and power supply routes. The current is very different. The current transformers from several amperes to several hundred amperes are available. In order to facilitate measurement, protection and control, it needs to be converted. In order to compare the currents, the voltage above the other lines is generally higher. If the direct measurement is very dangerous, the current transformer acts as a current transformer and electrical isolation.

The current transformer is very similar to the transformer and starts to work according to the principle of electromagnetic induction. But the transformer transforms the voltage and the current transformer changes the current. The current transformer can pass the larger current. A certain ratio is converted into a secondary current with a relatively small value for protection and measurement.

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