AC-DC electrical contact electricity life testing device and method

Abstract

This invention relates to an experiment apparatus and method for ac / dc contacts life, which comprises a testing machine, an electron control box, a group of load impedance and power source, wherein, the voltage-controlled power source is connected with load impedance, and the load impedance is connected with ac / dc testing machine, and electron control box is to control the ac / dc testing machine. In normal conditions, the tested contact can record experiment times and record binding times of each circle. When in fusion welding, the test contact can cut off power and alarm and count within one to five seconds. The steps of the method are the following: contact material choosing and preparation; sample alignment steps; load impedance, power adjusting, wherein, sample alignment also comprises on / off speed adjusting, counting contact adjusting, closed-force adjusting and breaking force adjusting.

Description

technical field [0001] The invention relates to an AC / DC electric contact electric life test device and a test method thereof, belonging to the technical field of electric contact materials. Background technique [0002] For the detection of contact materials, the routine test items are: chemical composition, mechanical and physical properties. It cannot reflect the real operating performance and electrical properties of the contact material; if the type test is directly carried out on the electrical product to screen the material, the blindness is large, the test cost is high, and the test cycle is long. Therefore, at the end of the 1970s, Shanghai Electrical Appliance Science Research Institute and Guilin Electrical Appliance Science Research Institute jointly developed my country's first electric contact wear tester (CS-1 type), the test voltage is AC220V, current ≤ 50A, No DC load system. [0003] In the early 1990s, with the vigorous development of my country's car and...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned testing machine can only be used on power frequency AC loads. Since there is no DC load device, DC tests cannot be performed, which is far from satisfying the growing electrical contacts in the testing of DC electrical products such as signal communication and traffic electrical appliances. Require

The control system of the above-mentioned testing machine is also outdated and backward, and the testing functions are few, so it is necessary to research and develop new testing equipment and testing methods

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