hook type current transformer的意思|示意

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Hook type current transformer (HCT), also known as claw type current transformer, is an important type of electrical transformer. It is usually used in electrical protection systems, accurate measurement of power system, and current detection in automation control systems.

HCTs are connected in series with a main circuit and can measure the current value. They are typically used to detect overload and short circuit current in electrical systems. The secondary current of these current transformers is much lower than the primary current, which is used to power the electrical protection system components.

The primary current flowing through the HCT will cause a strong magnetic field to be produced. This magnetic field induces a current in the secondary winding of the transformer, which is in proportion to the primary current. This enables the primary current to be accurately measured by the protection system.

The HCT also has an over-current protection feature, which will cause it to disconnect if the primary current exceeds a certain level. This ensures that the electrical system is safe from overloads and short circuits.

The HCT works best when the primary current is sinusoidal. When the primary current is distorted, the accuracy of the transformer will be affected. It is therefore important to ensure that the primary current is clean and free of distortion.

In summary, the hook type current transformer (HCT) is a very important electrical transformer used in electrical protection systems, accurate measurements and automation control systems. It has an over-current protection feature and works best with sinusoidal primary currents.