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Relay test method for on-line testing instrument

A relay testing and relay technology, used in circuit breaker testing, instruments, measuring electricity and other directions, can solve the problems of incorrect judgment and inability to accurately locate the relay under test, and achieve the purpose of reducing erroneous judgment, fast and accurate positioning, and saving time. Effect

Active Publication Date: 2007-11-14
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcoming that the multi-relay related test in the prior art cannot be accurately positioned, provide a relay testing method for an online tester, and solve the problem in the prior art that leads to misjudgment of the relay under test

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  • Relay test method for on-line testing instrument

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0026] The relay testing method of the online tester of the present invention, as shown in Figure 1, proposes a multi-channel relay testing technical idea, namely: establish redundant channels of the relay under test, that is, establish multiple channels, except for the relay under test In addition, the relays passed by each path are completely different. In the case of a damaged relay in one of the paths, another path can be selected to form a closed loop.

[0027] The process of the inventive method testing relay is as follows:

[0028] Step 1: Close the relay under test;

[0029] Step 2: Establish two or more closed loops containing the relay under test, where all relays on the path are completely different except for the relay under test;

[0030] Step 3: Test the resistance of the two parallel relay circuits through the analog test card, and ju...

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Abstract

This invention discloses an online Meter Relay testing method, including the following steps: the establishment of the redundancy tested Relay access, namely the establishment of a number of pathways, in addition to the measured relay, the relay through each pathway are totally different. Under the circumstances the relay damaged in one pathway, another pathway formed closed-loop, continue to test. The invention method used at least two relays because of a closed-loop access, to test. Iif the two access roads are in good condition and do not affect the judgment of the measured relay, even though one access road has problems, another pathway can still guarantee test loop . Compared with the existing technology, the invention has been greatly reduced wrong judgment because of the other relay pathway damage, can rapidly and accurately positioning of Relay, and reduce the time to maintain DRC card relay.

Description

technical field [0001] The invention relates to a testing method for a relay, which belongs to the field of testers, and in particular relates to a relay multi-path testing method for an online tester. Background technique [0002] In the prior art, the online test is also called the internal circuit test, namely ICT (IN CIRCUIT TEST, referred to as ICT), which is to test the device without removing the device from the printed circuit board PCB (PRINTED CIRCUIT BOARD, referred to as PCB). A test method for testing. [0003] The online test can conduct a comprehensive inspection of the single board, the test speed is fast, and the fault location is accurate. According to the type of on-board devices, online testing is divided into digital online testing and analog online testing. Analog testing technology is an important testing technology in ICT testing. It is mainly used to test non-digital devices such as analog devices and linear devices on printed circuit boards, and t...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01R31/00
Inventor 王永静傅佳芳刘彬段靖荒廖继红鹿祥宾
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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