CN105182230A - Contactor synchronous detector and use method thereof - Google Patents
Contactor synchronous detector and use method thereof Download PDFInfo
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- CN105182230A CN105182230A CN201510649712.0A CN201510649712A CN105182230A CN 105182230 A CN105182230 A CN 105182230A CN 201510649712 A CN201510649712 A CN 201510649712A CN 105182230 A CN105182230 A CN 105182230A
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Abstract
The invention discloses a test instrument for testing the adhesion time of a three-phase contact of a vacuum circuit breaker. The test instrument comprises a display unit and a test unit which are connected. The test unit comprises a programmable logic controller (PLC) and a test circuit. One of the movable contact and the fixed contact of a contactor KM is connected with the input common end of the PLC and the other one is connected with another input end of the PLC. An intermediate relay MY2NJ is connected between an output end and an N end. The contactor KM is connected in series with a normally-open contact MY2NJ and then connected to an AC power supply. The display unit comprises a text display connected with the PLC via a data line. By means of the control of the PLC to an external relay and time detection of the contact of the vacuum circuit breaker returned to a S7-200 module, the test instrument achieves a debugging precision requirement of a vacuum contactor and displays a result on a TD200 text display in order that a professional may easily overhaul and debug .
Description
Technical field
The present invention is under the jurisdiction of Power System and its Automation technical field, relates to mine electrical technology, especially relates to the instrument of a kind of three-phase contact synchronous pickup time for detecting debugging vacuum circuit breaker class electrical equipment.
Background technology
Whether adhesive observed by the existing external bulb of contactor that uses, and prior art cannot detect each contact concrete pickup time.
Because modern electrical equipment electric-control system generally adopts digital frequency-adjustable speed-adjustable, so propose higher accuracy requirement lock in time to the three-phase adhesive of Vacuum directional contactor, require to be accurate to 10ms.Asynchronous when contactor three-phase main contact closes, certain two-phase main contact, by especially big cranking current pulse, all can cause main contact melting welding.Otherwise too large synchronous error can damage the precision equipment of variable frequency adjustment cabinet, cause equipment breakdown and have influence on equipment operation.After deliberation, by realizing detecting debugging vacuum circuit breaker three-phase contact synchronous pickup time, finding asynchronous contact and regulating in time mutually.Like this, not only can reach the requirement of equipment use, but also synchronous pickup time can be seen intuitively.
Summary of the invention
For providing the testing tool of a kind of accurate detection vacuum circuit breaker three-phase contact pickup time.To achieve these goals, the technical solution used in the present invention is:
A kind of contactor synchronous detecting instrument, comprise display unit and test cell, display unit is connected with test cell, it is characterized in that: test cell comprises Programmable Logic Controller and test circuit, the moving contact of contactor KM and the one in static contact all input common port with Programmable Logic Controller and are connected, another kind of contact is connected from the different input ends of Programmable Logic Controller, and auxiliary reclay MY2NJ is connected between output terminal and N end, incoming transport power supply after contactor KM connects with normally opened contact MY2NJ;
Display unit comprises text display, and text display is connected with Programmable Logic Controller by communication data line.
Further, described Programmable Logic Controller adopts the CPU224 in SIEMENS S 7-200, and text display adopts the TD200 text display of model, and the moving contact of contactor KM is connected with wire by conductive clip with the conductive component of static contact.
A using method for contactor synchronous detecting instrument, step is as described below,
1, operate text display, make contactor KM control contact KMA, KMB, KMC adhesive, read text display, control contact KMA, KMB, KMC closure time and be followed successively by T1, T2, T3;
2, calculate difference t1, t2, t3 of T1, T2, T3, if difference is all less than allowable error, then stop experiment;
If the situation being greater than allowable error appears in 3 t1, t2, t3, then T1, T2, T3 are sorted by size, adjusting departing from the contact that intermediate value is greater than allowable error corresponding in T1, T2, T3, then returning the first step, until qualified.
This device passes through S7-200 type programmable controller to the control of outside relay, vacuum contactor contact closure is utilized to turn back to the time detecting of S7-200 module, achieve the accuracy requirement of vacuum contactor debugging, and be shown on TD200 text display, be convenient to the maintenance debugging of professional.There is following features:
(1) find asynchronous contact synchronous pickup time regulate in time mutually by realizing detecting debugging vacuum circuit breaker three-phase contact.Like this, not only can reach the requirement of equipment use, but also synchronous pickup time can be seen intuitively;
(2) device damage caused because contactor adhesive is asynchronous is thoroughly solved;
(3) technique utilization for mine safety in production and promote maintenance personal work efficiency, work tool is of great significance;
(4) eliminate the out-of-date methods using bulb detection adhesive to put in place, more directly can see the pickup time of contact, the adjustment of convenient for maintaining personnel.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention.
Fig. 2 is communications line figure of the present invention.
Embodiment
Embodiment
Contactor synchronous detecting instrument comprises display unit and test cell, and display unit is connected with test cell.Test cell comprises Programmable Logic Controller and test circuit, three moving contacts of contactor KM entirely input common port L+ with Programmable Logic Controller with the one in three static contacts and are connected, and another kind of contact is connected with input end I0.1, I0.2, I0.3 of Programmable Logic Controller respectively.
Auxiliary reclay MY2NJ is connected between output terminal Q0.0 and N end, incoming transport power supply after contactor KM connects with auxiliary reclay MY2NJ normally opened contact.Display unit comprises text display, and text display is connected with Programmable Logic Controller by communication data line.
Described Programmable Logic Controller adopts the CPU224 in SIEMENS S 7-200, and text display adopts the TD200 text display of model, and the moving contact of contactor KM is connected with wire by conductive clip with the conductive component of static contact.
Contactor synchronous detecting instrument method of operating is as follows.
1 operation text display, control auxiliary reclay MY2NJ adhesive, contactor KM relay obtains electric, and contactor KM controls contact KMA, KMB, KMC adhesive, and on contact, the conductive clip of six roots of sensation line accesses I/O mouth connection (address 2) of Programmable Logic Controller respectively.Detect each phase pickup time by Programmable Logic Controller (address 2), text display (address 1) display of connection detects the time.
The closure time of three contacts of 2 contactor KM is T1, T2, T3, and allowable error is t (can value be 10ms).Calculate the difference of T1, T2, T3, if difference is all less than t, then stop experiment.
If the situation being greater than t appears in 3 T1, T2, T3 differences, T1, T2, T3 according to higher value, intermediate value, smaller value sequence, are then greater than the higher value of t or contact corresponding to smaller value adjusts to departing from intermediate value.Then the first step is returned, until qualified.
This device is a kind of contactor time synchronized detecting device, and it connects TD200 text display by a SIEMENS S 7-200 Programmable Logic Controller.Control voltage is that the MY2NJ relay of AC200V connects main contact, and protective tube controls electric current and protects instrument, and three groups of connection cables of external vacuum circuit breaker, accurately can monitor the pickup time of vacuum circuit breaker.
Measure pickup time at auxiliary shaft vacuum contact derailing switch contact, by the control of programming to outside relay, the time detecting utilizing vacuum contactor contact closure to turn back to S7-200 module achieves the accuracy requirement of vacuum contactor debugging, and be shown on TD200 text display, be convenient to the maintenance debugging of professional, can accurate detection but poor for pickup time, asynchronous Contact Term is adjusted.
Embodiment recited above is only be described the preferred embodiment of the present invention; not design of the present invention and protection domain are limited; under the prerequisite not departing from design concept of the present invention; the various modification that in this area, common engineering technical personnel make technical scheme of the present invention and improvement, all should fall into protection scope of the present invention.
Claims (3)
1. a contactor synchronous detecting instrument, comprise display unit and test cell, display unit is connected with test cell, it is characterized in that: test cell comprises Programmable Logic Controller and test circuit, the moving contact of contactor KM and the one in static contact all input common port with Programmable Logic Controller and are connected, another kind of contact is connected from the different input ends of Programmable Logic Controller, auxiliary reclay MY2NJ is connected between output terminal and N end, incoming transport power supply after contactor KM connects with normally opened contact MY2NJ;
Display unit comprises text display, and text display is connected with Programmable Logic Controller by communication data line.
2. contactor synchronous detecting instrument according to claim 1, it is characterized in that: described Programmable Logic Controller adopts the CPU224 in SIEMENS S 7-200, text display adopts the TD200 text display of model, and the moving contact of contactor KM is connected with wire by conductive clip with the conductive component of static contact.
3. a using method for contactor synchronous detecting instrument, is characterized in that: step is as described below,
1, operate text display, make contactor KM control contact KMA, KMB, KMC adhesive, read text display, control contact KMA, KMB, KMC closure time and be followed successively by T1, T2, T3;
2, calculate difference t1, t2, t3 of T1, T2, T3, if difference is all less than allowable error, then stop experiment;
If the situation being greater than allowable error appears in 3 t1, t2, t3, then T1, T2, T3 are sorted by size, adjusting departing from the contact that intermediate value is greater than allowable error corresponding in T1, T2, T3, then returning the first step, until qualified.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510649712.0A CN105182230A (en) | 2015-10-09 | 2015-10-09 | Contactor synchronous detector and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510649712.0A CN105182230A (en) | 2015-10-09 | 2015-10-09 | Contactor synchronous detector and use method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015139A (en) * | 2016-01-20 | 2017-08-04 | 法拉第未来公司 | Detection using AC coupled to welding contactor |
| CN108241122A (en) * | 2016-12-23 | 2018-07-03 | 北京金风科创风电设备有限公司 | Testing device and method for action delay of contactor |
| CN110794296A (en) * | 2019-11-14 | 2020-02-14 | 兖州煤业股份有限公司 | Synchronous testing device for three-phase contactor |
| CN111830404A (en) * | 2020-07-03 | 2020-10-27 | 中国人民解放军63602部队 | Multifunctional circuit breaker detection device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015139A (en) * | 2016-01-20 | 2017-08-04 | 法拉第未来公司 | Detection using AC coupled to welding contactor |
| CN107015139B (en) * | 2016-01-20 | 2019-10-15 | 法拉第未来公司 | Detection using AC coupled to welding contactor |
| CN108241122A (en) * | 2016-12-23 | 2018-07-03 | 北京金风科创风电设备有限公司 | Testing device and method for action delay of contactor |
| CN110794296A (en) * | 2019-11-14 | 2020-02-14 | 兖州煤业股份有限公司 | Synchronous testing device for three-phase contactor |
| CN111830404A (en) * | 2020-07-03 | 2020-10-27 | 中国人民解放军63602部队 | Multifunctional circuit breaker detection device and method |
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Application publication date: 20151223 |