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Gaeilgenah Éireann
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Reactors and transformers are two very common devices in our electrical equipment, but they are somewhat similar in function, but they are also very different. Today we will talk about the differences between the two.
1. Function difference
You must know that the transformer plays the main role of voltage conversion, while the reactor plays the role of limiting the current or inductive current in the circuit. From a popular point of view, the component that can ensure the characteristic impedance function in the power circuit can be called a reactor. It is generally widely used in electric power grids. At the same time, it is actually used. These hollow electromagnetic coils without magnetically conductive materials are made, and several different assembly methods can be adopted according to the actual installation requirements, usually vertical, horizontal and vertical. When a short circuit fault occurs in a power system circuit, a relatively large short circuit current will result. If this situation cannot be limited in time, it will be difficult to maintain the working stability and reliability of other equipment at the same time. Therefore, a series reactor will be installed on the output circuit breaker to enhance the short circuit reactance capability and limit the short circuit current.
2. Winding differences
Transformers often choose to use two windings in a magnetic circuit, but reactors only need one winding, and the iron core of the transformer is closed. In order to relatively improve the linearity of the inductance, the reactor will make the iron core with There is a certain gap. In terms of windings, a reactor has only one winding and two terminals, while a transformer has two windings and four terminals. This is the difference between the two.
3. Storage difference
In the classification of reactors, there is a device called a filter reactor, which must have the function of storing energy when it is working. Compared with a transformer, it does not have the function of storing energy but transmitting energy. When the transformer is fully loaded, the multiple current is in a very small state, so when the ideal transformer is fully loaded, the multiple current is zero and there is no air gap in the transformer core. However, filter reactors are not. Whether it is a resonant circuit or a rectifier circuit, it must have an energy storage function. In order for the reactor to store enough energy smoothly, most reactor inductors have air gaps inside them.
