A performance testing device for a contactor
A detection device and contactor technology, applied in circuit breaker testing and other directions, can solve problems such as inability to automatically integrate and perform rapid testing, and achieve the effect of simple measurement methods
A detection device and contactor technology, applied in circuit breaker testing and other directions, can solve problems such as inability to automatically integrate and perform rapid testing, and achieve the effect of simple measurement methods
CN105445658BActive Publication Date: 2018-09-14CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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[0021] refer to figure 1 , The invention includes a single chip microcomputer, a touch screen, a drive circuit, a signal sampling circuit, and a constant current source circuit. The test item can be selected from the touch screen, and the specific test parameters can be set for the test item at the same time. (Such as the test times of the contactor on-off test; the voltage type of the coil voltage fluctuation test, the upper and lower limits of the voltage fluctuation; the test current value of the contact resistance value measurement of the contact, etc.) The single-chip microcomputer will also send the test data to the touch screen for display. (such as the number of good connections and bad connections of the contactor on-off test; the contact resistance value of the contact, etc.) The single-chip microcomputer controls the automatic adjustment of the power supply through the drive circuit, and the pull-in of the test contactor. Through the signal sampling circuit, curren...
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The invention discloses a contactor performance detection device. The contactor performance detection device comprises a single-chip microcomputer, a control touch screen, an automatic voltage regulation circuit, a contact on-off signal acquisition circuit, and a constant flow source circuit. The single-chip microcomputer can be used to control and coordinate other function modules. The control touch screen can be used to acquire various voltage signals and various current signals, and can be used to control the motion of relays having various functions. The single-chip microcomputer can be connected with a computer, and can be used for the transmission of the testing data, and then the testing data can be stored in the computer, and the testing reports can be printed. The touch screen is used for displaying different data, and at the same time, the user can set the parameters and carry out the operations of using the functions of the buttons by the touch screen. The automatic voltage regulation circuit is used to realize the automatic voltage regulation function and the switching function of the AC power supply and the DC power supply of the device. The contact on-off signal acquisition circuit can be used to detect whether the contact is switched on. The constant flow source circuit can be used to detect the contact resistance value of the contact. The contactor performance detection device is advantageous in that a lot of measuring functions are provided, the measuring way is simple; the automatic testing can be realized, and the testing results can be stored and printed, and the communication with the host computer can be realized.
Description
technical field [0001] The invention relates to a performance detection device of a contactor, in particular to a detection device for contactor on-off test, coil voltage fluctuation test, contact resistance value measurement and other tests of the contactor used in rail transit when it is overhauled. . Background technique [0002] Conventional contactor on-off test, coil voltage fluctuation test, and contact resistance value measurement of contacts are all different tests. It is necessary to replace different equipment and re-wiring, so it is impossible to perform a quick test. The data of 3 tests in the same test cannot be automatically integrated together. Contents of the invention [0003] The purpose of the present invention is to produce a targeted contactor performance for the contactor on-off test, coil voltage fluctuation test, and contact resistance value measurement that must be carried out when the contactor used in rail transit is overhauled. The detection ...
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Patent Timeline
14 Sep 2018
Publication
CN105445658B
- IPC
- G01R31/327
- CPC
- G01R31/327
- Inventors
- 邓学晖; 李勇