The Introduction of Open Core Current Transformer
What is the open core transformer and its application scenario?
Open core current transformers are a type of current transformers in the same principle, that is, the large current in circuit into a small current, so as to facilitate the use of various measuring meters and relay protection equipment. Due to its open open type structure, convenient installation and no need of power off operation, it is widely used.
Similarly, in terms of current measurement, if engineers do not use pin insertion or wire alignment design on PCB, they can consider more convenient open core type current transformer to measure current. However, it cannot be said that the current transformer with on-off and on-off is always better than that with non-on-off and on-off. Next, we will make the following comparative analysis.
If it is necessary to transform the distribution system, the open core current transformer (split core ct) plays its advantage: Easy to install and assemble, no need to disassemble the bus once, can operate with electricity, do not affect the customer's normal electricity, save manpower, material resources and financial resources for the customer's renovation project, improve efficiency.
In terms of measurement accuracy, non-open core current transformers tend to have higher accuracy than open core current transformers. Speaking of reasons we have to back to the iron core contact surface of open core CT. Everyone should know this truth. If the upper and lower core needs to be fitted and contacted, there must be a gap between them, which will greatly increase the magnetic resistance value, so that the measurement accuracy will be greatly compromised. The gap is the main reason for the precision, this is also the disadvantage.With more and more developed technology, IVY think of with the method of mirror surface treatment to reduce the gap between spacing, it works, in the development of technology, a well-formed current transformer will eventually achieve both quick and easy handling, also can have a big promotion in the precision grade. In a word, with the development of technology, open core current transformers can not only be assembled and disassembled quickly and conveniently, but also have a great improvement in the accuracy level.
In addition to the mirror surface treatment mentioned just now to increase the accuracy requirements, there is also the use of high quality ferrite material, hinge connections also greatly increase the life of the product.
Many of the current current transformers on the market use inferior plastic shells to link the upper and lower phases. In this way, the opening and closing times cannot be guaranteed, and it is easy to be damaged, which will lead to the separation of upper and lower phases. Therefore, the selection of the open core CT, price is important but quality is more important.
