A Leakage Current Transformer for High Power Copper Bar Measurement
A transformer and high-power technology, which is applied in the direction of inductors, measuring electrical variables, transformer/inductor cores, etc., can solve the problems of low detection accuracy and magnetic balance characteristics, signal distortion, misoperation, etc., and achieve low manufacturing costs , The production, processing and installation process is simple, and the effect of improving the detection accuracy
Active Publication Date: 2022-04-01
GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.
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Problems solved by technology
[0006] The purpose of the present invention is to solve the problems of low detection accuracy and magnetic balance characteristics, poor effect, and prone to signal distortion and malfunction when the existing leakage transformer is aimed at high-power copper bars, and provides a leakage mutual inductance for measuring high-power copper bars It can improve the magnetic balance characteristics and detection accuracy of the leakage transformer, facilitate the installation of high-power copper bars, make the magnetic field distribution more uniform, avoid outputting distorted signals, and maintain the normal use of the funnel transformer
Method used
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Embodiment 1
[0037] see Figure 3~Figure 5 , a leakage transformer for high-power copper bar measurement, comprising a transformer housing 1, characterized in that:
[0038] see Figure 6~Figure 9 , the transformer shell 1 is set as a round box, and a metal shielding layer 11 is connected inside it, and a transformer winding 4 is connected inside the transformer shell 1 outside the metal shielding layer 11, and the mutual inductance inside the metal shielding layer 11 Four through holes 12 are arranged in the device housing 1;
[0039] The metal shielding layer 11 divides the transformer housing 1 into two parts, one is the circular groove 1a located on the outer ring, which is coaxial with the transformer housing 1, and the other is the circular cavity located on the inner ring 1b, the transformer winding 4 is connected in the ring groove 1a, the through hole 12 is set in the circular inner cavity 1b, the centers of the four through holes 12 are connected successively to form a square, ...
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The invention relates to a leakage current transformer for high-power copper bar measurement, which comprises a transformer shell (1), which is connected with a circle of metal shielding layer (11), and the transformer shell (1) located outside the metal shielding layer (11) A transformer winding (4) is internally connected, and a set of through holes (12) are provided in the transformer shell (1) located in the metal shielding layer (11); the transformer winding (4) includes a ring magnetic core (4a) and a set of secondary coils (4b) evenly wound on the annular magnetic core (4a), a set of parallel copper columns (2) are correspondingly connected in the through holes (12), and the two ends of the copper columns (2) are Threads (2a) are provided, and two ends of each copper column (2) are respectively connected with a copper sleeve (3). The invention has the advantages of improving the magnetic balance characteristics and detection accuracy of the leakage transformer, facilitating the installation of high-power copper bars, making the magnetic field distribution more uniform, and maintaining the normal use of the funnel transformer.
Description
technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a leakage transformer for high-power copper bar measurement. Background technique [0002] The residual current protection device is used to protect the electrical circuit from ground faults, prevent equipment and electrical fire accidents caused by ground fault currents, and can also be used to provide indirect contact protection against personal electric shock hazards. The residual current protection device includes two installation methods of integral type and split type. For the split type residual current protection device, the residual current transformer is installed separately from the main control module and is externally connected to the main circuit. [0003] Residual current transformers are also called leakage transformers, such as figure 1 , figure 2 As shown, it is a conventional transformer structure. In this structure, when the primary main c...
Claims
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IPC IPC(8): H01F38/30H01F27/28H01F27/36H01F27/34H01F27/25G01R31/52G01R15/18
CPCH01F38/30H01F27/2895H01F27/36H01F27/34H01F27/25G01R31/52G01R15/183H01F2038/305
Inventor 孟羽赵敏许波
Owner GUOCHUANG INNOVATION CENTER OF MOBILE ENERGY (JIANGSU) CO.,LTD.