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The Primary Winding Structure of The Current Transformer
Mar 23 , 2020
The primary winding structure of the current transformer has two forms of single-turn type and multi-turn type. Single-turn type: The winding is only one turn at a time, and the structure is relatively simple. The primary current is more than 300 to 600A. It is divided into two types: bar type and bus bar type. Bar type: The primary winding is a copper rod, copper tube or copper bar that passes th...
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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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Analysis of the basic knowledge of these two current transformers and the difference between the two
Aug 12 , 2021
1. Bus-type current transformer and pillar-type current transformer Transformer I was asked a question by someone the day before, what is the difference between a bus-type current transformer and a pillar-type current transformer? At that time, there was some confusion, let alone the difference. I still don't have any idea what these two forms look like. After checking the materials, I found that ...
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Transformer internal structure transformation ratio conversion method
Aug 12 , 2021
The current transformer is an instrument and equipment that converts a large current on the primary side into a small current on the secondary side for accurate measurement based on the basic principle of the magnetic effect of the current. It is mainly composed of a closed iron core and windings. Transformer The number of turns of the primary winding coil is very small, which is stringed in the r...
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Leakage protection can save lives, The installation of this type of inductor must be clear
Jun 18 , 2022
1. Residual current transformer wiring Before installing the residual current transformer, it is necessary to identify the phase line, N line and PE line in the power network. The phase line and the N line should pass through the residual current transformer together as much as possible, and the PE line should not pass through the transformer. In the system software, if the N line does not pass th...
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Split core current transformer Structural characteristics and working principle
Jul 20 , 2022
1. Structural features Split core current transformer has a good design structure, beautiful appearance, and a transparent flip-top design for easy wiring. The shell material is made of PC/ABS alloy, which has the characteristics of high temperature resistance, high mechanical strength and environmental protection; the iron core is made of oriented cold-rolled silicon steel sheet, which has the ch...
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Application analysis of leakage protection in electric vehicle charging pile
Jul 25 , 2022
As the world's largest consumer of new energy electric vehicles, new energy electric vehicles are developing rapidly, and the safety of electric vehicle charging piles is a top priority: whether the electric vehicle charging pile can avoid random plugging and unplugging during the charging process. The accident caused by the charging gun, whether it can be automatically powered off after charging,...
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Current transformer structure principle
Nov 10 , 2022
1, The ordinary current transformer structure principle is relatively simple, by the mutual insulation of the primary winding, secondary winding, core and frame, shell, terminals and other components. Its working principle and transformer is basically the same, a winding turns (N1) less, directly in series in the power line, a load current (I1) through a winding, the alternating flux induction gen...
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