Portable test tool for low-voltage power supply current transformers
A current transformer and low-voltage power supply technology, which is applied in the field of portable test tools for low-voltage power supply current transformers, can solve the problems of affecting the accuracy of test data, time-consuming and labor-intensive testing, waste of materials and construction period, etc., to shorten the working process time and simplify production , the effect of easy operation
Active Publication Date: 2017-05-31
天津市百利纽泰克电气科技有限公司
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Problems solved by technology
This test method has the following disadvantages: it is very difficult to fix the copper wire on the product terminal, it is not only time-consuming but also the contact is not firm, and the accuracy of the test data is directly affected due to poor contact
In order to test the accuracy, the test personnel need to test repeatedly, the test is time-consuming and laborious, and once there is a misjudgment, it will lead to waste of materials and even delays in the construction period
Method used
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[0025] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0026] see Figure 1 to Figure 6 , a portable test tool for a low-voltage power supply type current transformer, comprising: a first part I connected to the first terminal 12, a second part II connected to the second terminal 13, the low-voltage power supply type in this preferred embodiment The current transformer 11 includes a first connection terminal 12 and a second connection terminal 13; the first part I includes a first insulating body 2 and two signal input lines 1; the first insulating body 2 is input by a pre-embedded signal The main rod used for the line 1 and the vertical wall at one end of the main rod form a "T"-shaped structure; the other end of the main rod is provided with a first right plug-in terminal 5 and a first left plu...
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The invention discloses a portable test tool for low-voltage power supply current transformers. The portable test tool at least comprises a first part connected with a first wiring terminal and a second part connected with a second wiring terminal. The first part comprises a first insulating body and two signal input lines. The first insulating body is of a 'T'-type structure which is composed of a main rod and a vertical wall at one end of the main rod. A first right plug terminal and a first left plug terminal are arranged at the other end of the main rod. The two signal input lines are plugged into the vertical wall, and then passes through the main rod to be electrically connected with the first right plug terminal and the first left plug terminal. The second part includes a second insulating body and two signal output lines. The second insulating body is of a strip structure. A second left plug terminal and a second right plug terminal are arranged at one end of the second insulating body. The two signal output lines are plugged into the other end of the second insulating body, and then pass through the second insulating body to be electrically connected with the second left plug terminal and the second right plug terminal.
Description
technical field [0001] The invention relates to the technical field of current transformers, in particular to a portable test tool for low-voltage power supply current transformers. Background technique [0002] As we all know, the principle of current transformer is based on the principle of electromagnetic induction. A current transformer consists of a closed core and windings. Its primary winding has very few turns, and it is connected in series in the line of the current to be measured, so it often has all the current of the line flowing, and the secondary winding has a large number of turns, connected in series in the measuring instrument and the protection circuit, and the current mutual inductance When the transformer is working, its secondary circuit is always closed, so the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to a short circuit. The function of ...
Claims
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IPC IPC(8): G01R1/04
CPCG01R1/0416
Inventor 孙世元蔚浩王玉李娟宋颖硕
Owner 天津市百利纽泰克电气科技有限公司