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Advantages of nanocrystalline alloys
May 18 , 2020
In order to obtain the best suppression effect on common mode interference, the common mode inductor core must have high magnetic permeability and excellent frequency characteristics. In the past, most of the ferrite core materials used for common mode inductors have excellent frequency characteristics and low cost advantages. However, ferrite also has some insurmountable weaknesses, such as poor ...
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What is the effect of current transformer in open circuit condition
May 23 , 2020
The current transformer, CT, has fewer primary winding turns. When using, the primary winding is connected in series in the circuit under test, and the secondary winding has more turns. It is used in series with the current coils of measuring instruments and relays. ,So the CT is close to short circuit during normal operation. The magnitude of the CT secondary current is determined by the primary ...
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The difference between current transformer and zero sequence current transformer
Jun 09 , 2020
1. The basic function of current transformers The current transformers can convert primary currents with larger values to secondary currents with lower values through a certain transformation ratio, which are used for protection and measurement purposes. For example, a current transformer with a transformation ratio of 400/5 can convert the actual 400A current to 5A current. 2. Working principle o...
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Selection of residual current device in EV charging pile / module
Jun 17 , 2020
With the explosive growth of the number of new energy vehicles in the past two years, the construction scale of its supporting facilities and charging piles has also expanded. The growth of the new energy vehicle market is inseparable from the construction of basic charging facilities. How to ensure the safety of electricity used in the charging process, especially to prevent the leakage current f...
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Briefly description of zero phase current transformer
Jul 10 , 2020
The general current transformer can convert the primary current with a large value to a secondary current with a smaller value according to a certain transformation ratio, so that it can be used for maintenance and accurate measurement. The main function of the zero-sequence current transformer is to protect the operation and disconnect the switching power supply when an electric shock accident or...
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The general concept of current transformers
Aug 06 , 2020
A general current transformer can transform a primary current with a large value into a secondary current with a smaller value according to a certain transformation ratio, so as to play the main purpose of maintenance and accurate measurement. The main function of the zero-sequence current transformer is to protect the power circuit when an electric shock accident or common leakage occurs in the p...
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Let's talk about inductors today to see how it works
Sep 17 , 2020
Principle and main function of inductors Inductor is an electronic component that can convert electrical energy into magnetic energy, store it under appropriate conditions, and then release it and then convert it into electrical energy. The most important role of inductor is electromagnetic conversion. Inductor All electrical conductors (transmission lines) will cause electromagnetic fields when p...
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Analysis and improvement of split core current transformer
Dec 17 , 2020
Split core current transformer, as its name implies, is a current transformer that can be opened and closed on the primary circuit (the side of the measured current circuit, usually a cable or parent card), and is a secondary device by sensing the current on the primary circuit Take measurements or protect relays. In recent years, although the development of China's distribution network has i...
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