Views:5 Author:Site Editor Publish Time: 2020-11-25 Origin:Site
In fact, the ammeter measures the current in the circuit.but we can also measure it in the high-voltage line or the circuit with very large current. It is very dangerous in the high-voltage circuit, and the circuit with large current is easy to burn out if directly using an ammeter. how to know the magnitude of the current in the circuit?
In this case, an split core current transformer is useful.which can separate the voltage transformer and the current transformer. Its use to convert the high voltage(current) into a low voltage(current).so as to facilitate the use of various measuring meters and relay protection equipment. The principle of a transformer is actually similar to a transformer, and you can also understand it as a small transformer.
The split core(open-close) current transformer detects the current according to the number of turns of the primary and secondary coils. That is, the magnitude of the current is inversely proportional to the number of turns of the coil.because the more coils, the greater the resistance and the smaller the current. Conversely, the fewer the coils, the smaller the resistance.