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Safety checking system and method when large current passing cable assembly

A technology of cable assembly and detection system, which is applied in the direction of fault location, etc., can solve the problems of high price and lack of cable assembly manufacturers, and achieve the effect of simple program, intuitive and clear detection data, and simple structure

Inactive Publication Date: 2008-11-19
AMPHENOL CNT XIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To establish a high-current test system, in addition to being very expensive, it also requires special environmental conditions and complex operating techniques, which are not available in general cable assembly manufacturers.

Method used

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  • Safety checking system and method when large current passing cable assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Example: Take a 50cm long cable with SMA series connectors at both ends to pass 4A current as an example, the description is as follows:

[0025] 1. Choose a switching power supply with a voltage of 24V and a maximum possible output of 4.5A as the current source 1.

[0026] 2. Select four 24V, 25W low-voltage lighting bulbs in parallel as the power load 2.

[0027] 3. Connect the circuit according to the drawings, put the power switch 3 in the ON position, and the point thermometer 7 touches the shell surface of the SMA connector on the cable assembly 4 .

[0028] 4. Close the power switch 3, and observe the display values ​​of the ammeter 5, voltmeter 6, and point thermometer 7.

[0029] 5. When the current ≈ 4A, the voltage ≈ 24V, and the point thermometer 7 shows that the temperature is room temperature, continue the test for 30 minutes. If the fluctuation of each value is very small, disconnect the power supply 3 and end the test. Conclusion: This cable assembly ...

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Abstract

Disclosed is a safety detecting system for detecting a cable component when passing through heavy current as well as a detection method thereof, a power switch (3), an ammeter (5), a cable component (4) and a power loader (2) are connected in series and then connected to the two ends of a current source (1), a voltmeter (6) is connected with the ammeter (5) and both ends of the current source (1) in parallel, and a point temperature meter (7) is in contact with a connector shell on the cable component (4). When the current value and voltage value reach the required value, and the displayed temperature on the point temperature meter is the room temperature, the test continues for thirty minutes; if the indicated value on the point temperature meter is lower than 60DEG C of the cable component, the product is safe, if the value is higher than 60DEG C of the cable component, the product is unsafe. The detecting system of the invention has advantages of simple structure, very low cost of equipment, direct and clear testing data, and accurate and reliable data; and easy mastery of detecting operation and rather simple program. The general cable component manufacturers are able to build detecting systems by themselves totally so as to ensure the safety of products.

Description

technical field [0001] The invention relates to a safety detection system and a detection method for a cable assembly passing through a large current. Background technique [0002] Coaxial cable assemblies are the most widely used transmission lines for high frequency circuits and equipment and systems. The main function of cable assemblies is to transmit high frequency signals and electromagnetic energy. Each cable assembly has a limited amount of high current conduction. If it exceeds a certain amount, due to the excessive current density on the surface of the inner conductor, it will break down the surrounding supporting medium, resulting in a short circuit of the inner and outer conductors, and then damage the connecting equipment. Therefore, the cable assembly working in a large current circuit must be tested to see if it has the characteristics of safe operation before it can be put into use. [0003] The cable assembly is composed of two RF coaxial connectors and a ...

Claims

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Application Information

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IPC IPC(8): G01R31/08
Inventor 胡波闫桂兰
Owner AMPHENOL CNT XIAN TECH