Detailed explanation of the grounding points of power transformer cores?
2022-03-29
Power transformer core It is the main magnetic circuit part of the transformer. The power transmission capacity of a power transformer depends on the material and cross-sectional area of the core. Therefore, it plays a relatively large role during use. Below, we will talk about its grounding points.
The power transformer core is made of hot-rolled or cold-rolled silicon steel sheets with high silicon content and an insulating paint coating. The structure is simple and reliable. However, it is large, heavy, expensive, and has a single function. The core and the coils wound around it form a complete electromagnetic induction system. Of course, when using it, you must know its grounding points. For example, a separate yoke clamp grounding lead is set. Because if the core touches the clamp, causing a multi-point grounding fault, then when grounding, the current only flows inside the core clamp, and you also need to know here that no current flows through the core grounding lead, which will cause the staff to mistakenly believe that the core has not malfunctioned; therefore, after the installation of the power transformer core, no matter where it touches the clamp, it will form a loop through two grounding leads, so the grounding current can be correctly detected externally.
In addition, when installing the power transformer core, you need to know here that the power transformer core is placed in the middle of the yoke cross-section. In this way, no matter where the yoke tie insulation bolt is and where the fault grounding point is, when it is used in the loop, its large induced voltage is only 1/4 of the turn voltage. At this time, the large grounding current is only a few amperes, which is also something that the staff needs to know here. Moreover, it is much smaller than when the power transformer core grounding plate is placed in other positions. And when you really need to place the power transformer core grounding plate in other positions due to inconvenient on-site installation, this is also a problem to pay attention to. Of course, at this time, the yoke tie insulation bolt and the grounding plate should also be placed diagonally to prevent large electricity generation. If you still have any questions, you can call us at any time. There are online customer service staff to receive you, and any questions will be patiently answered. You can also see our contact information on the website, and you can call directly to inquire. The product types here are also very complete, and there must be one suitable for you.
The above is an introduction to Power transformer core installation precautions. I hope the above will be helpful to everyone. If you have any other questions, please feel free to consult our professional customer service staff.
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