CN103558579A - Electric energy meter calibration device - Google Patents
Electric energy meter calibration device Download PDFInfo
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- CN103558579A CN103558579A CN201310545452.3A CN201310545452A CN103558579A CN 103558579 A CN103558579 A CN 103558579A CN 201310545452 A CN201310545452 A CN 201310545452A CN 103558579 A CN103558579 A CN 103558579A
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Abstract
The invention provides an electric energy meter calibration device for solving the problems that in a calibration process of an intelligent calibration meter, meter position contact is poor and short troubles occur. The electric energy meter calibration device comprises a table body. The table body is provided with a universal meter, a calibration indicator light, an emergency stop button, a table body current wiring port, an electric energy meter current wiring port, a meter position data display unit, a plurality of electric energy meter positions used for containing electric energy meters to be calibrated and a plurality of meter hanging frames for hanging the electric energy meters to be calibrated, wherein the meter positions are in series connection. The electric energy meter calibration device can quickly find out failure occurrence positions of current loops, and meanwhile is high in compatibility and suitable for quick calibration of electric energy meters with different numbers of out-phases ranging from single phases to three phases.
Description
Technical field
The present invention relates to electric energy meter calibration technical field, particularly relate to a kind of electric energy meter calibrating apparatus, for fast detecting electric energy meter calibrating apparatus epi-position short-circuit conditions.
Background technology
Electric energy meter is to be used for specially the metering instrument of section electric energy aggregate-value sometime, belongs to strong inspection measurement instrument, must after assay approval, just can install and use.
The principle of electric energy meter calibrating apparatus calibrating electric energy meter is to adopt method of standard table as shown in Figure 1.During calibrating electric energy meter, first inspection is articulated in electric energy meter in the epi-position of calibrating installation, the current return of tested electric energy meter and being cascaded, voltage circuit is connected in parallel, current return and voltage circuit that the reference voltage that calibrating installation produces and reference electric current output to tested electric energy meter.Because current return is series connection, as long as badly all can cause the fault that verification electric current cannot rise so there is an ammeter to contact with calibrating installation, this is often because the result that the loose contact of the binding post of device and the connection terminal of certain electric energy meter has caused current return to open circuit.Because the electric energy of the upper verification simultaneously of device is expressed 24 or 16 more than, and termination contact is bad from electric energy meter outward appearance, cannot judge, so trouble spot is difficult to search.Traditional way is that the electric energy meter in the school that needs on device is pulled down and again articulated, and then verification, sometimes will repeatedly for several times could finally find trouble spot, and such way wastes time and energy.Along with carrying out of dispensing work unified in electric energy meter outskirts of a town, electric energy heading inspection task has strengthened greatly, and traditional malfunction elimination method has had a strong impact on completing of verification task.
The Chinese utility model patent application that application number is CN200720124922.9 provides a kind of electrical energy meter calibration, the withstand voltage calibrating integrated apparatus of having good luck, comprise calibration equipment and withstand voltage multi-functional tester, the output terminal of calibration equipment and withstand voltage multi-functional tester is connected with tested electric energy meter by high-voltage relay, by switch, control the switching that high-voltage relay is realized calibration equipment and withstand voltage multi-functional tester, this integrated apparatus unites two into one the calibration equipment of electric energy meter and the withstand voltage device of having good luck, can be by the running-up test of electric energy meter, shunt running test, error test, constant test and AC voltage withstand test complete by simple switching over, and do not need to repeat to articulate table, do not count, wiring, repeat typing table meter information and trnasshipment engine route link, primary connection can complete all calibrating projects.
Yet the apparatus structure of above-mentioned prior art is complicated, cost is higher, and cannot complete single-phase intelligent calibrating installation be before and after verification task in the pocket watch situation of two sides.
Summary of the invention
Technical matters to be solved by this invention is: solve the epi-position loose contact in checking procedure of calibrating intelligent meter, occur the problem of short trouble, particularly how meeting single-phase intelligent calibrating installation is the verification needs in the pocket watch situation of two sides, front and back.
In order to solve the problems of the technologies described above, the invention provides a kind of electric energy meter calibrating apparatus, comprise stage body, on described stage body, be provided with: multimeter, calibrating pilot lamp, scram button, stage body electric current wiring interface, electric energy meter current wiring interface, epi-position data display unit, and a plurality of for holding electric energy meter epi-position and a plurality of meter hanging frame that articulates electric energy meter to be examined and determine of electric energy meter to be examined and determine, wherein, described a plurality of epi-position is connected in series.
Further, described in, electric energy meter to be examined and determine is two-phase electric energy meter or three-phase electric energy meter.
Further, described multimeter is digimer.
Further, described multimeter is with hummer.
Further, described electric energy meter current wiring interface comprises the binding post of multiple different colours, and every kind of color represents the phase place number that electric energy meter to be examined and determine is corresponding.
Further, the binding post of corresponding two same colors of each phase place of electric energy meter to be examined and determine.
The invention has the beneficial effects as follows: fast finding has the fault nidus of current return, meanwhile, compatible strong, be applicable to the quick calibrating of the single-phase electric energy meter to three equal different separate numbers.
Accompanying drawing explanation
Fig. 1 is electric energy meter calibrating apparatus principle of work block diagram;
Fig. 2 is the panel wiring diagram after equipment for three-phase electrical energy meter pocket watch according to an embodiment of the invention;
Fig. 3 carries out the method flow diagram of current return trouble spot calibrating according to electric energy meter calibrating apparatus of the present invention;
Fig. 4 is that three-phase electric energy meter according to an embodiment of the invention is through calibrating non-fault schematic diagram;
Fig. 5 is that three-phase electric energy meter according to an embodiment of the invention is through examining and determine the schematic diagram that has fault and carry out localization of fault;
Fig. 6 is the wiring schematic diagram of detection failure according to an embodiment of the invention when separate.
Embodiment
Below in conjunction with Figure of description, describe specific embodiments of the invention in detail.
According to one embodiment of present invention, electric energy meter calibrating apparatus comprises: stage body, on described stage body, be provided with stage body pilot lamp 1, stage body scram button 2, stage body current/voltage binding post 3, reometer current/voltage binding post 7, epi-position liquid crystal display 4, and a plurality of electric energy meter epi-position and a plurality of table meter terminal boxes 6 that articulate electric energy meter to be examined and determine that connect table epi-position 5 for holding stage body, wherein, described a plurality of epi-position is connected in series.
Preferred embodiment as shown in Figure 2, is the panel of equipment for three-phase electrical energy meter, totally 16 epi-positions.In this preferred embodiment, reometer current/voltage binding post 7 adopts electric current binding post.Each epi-position has 6 electric current binding posts, be divided into yellow, green, red trichromatism (successively), represent A, B, C three-phase, every have two binding posts mutually, respectively that electric current is into and out of terminal, the outlet column of the 1st epi-position of every phase and being connected and communicating in inside at inlet wire post of the 2nd epi-position, the 2nd outlet and the 3rd inlet wire inside communicate ... the rest may be inferred.When verification electric energy meter, ammeter is articulated on calibrating installation, and the current coil of every phase of ammeter inside is crimped on the sub into and out of terminal of each epi-position.Whole like this current return is with regard to conducting.
If ammeter crimping is bad, loose contact, the fault that will often there will be verification electric current to rise, this is often because the loose contact of the binding post of device and the connection terminal of certain electric energy meter has caused the result of short circuit of current loop.Now, can be by coming failure judgement separate with multimeter, be on earth electric current A, B, C which occurred opening circuit, can, specific to fault epi-position, be also that open circuit fault has appearred in a certain table.
The current return trouble spot calibration method of the embodiment that is three-phase electric energy meter according to electric energy meter above-mentioned to be examined and determine, method flow diagram as shown in Figure 3, comprises the steps:
1, confirm that fault is separate
Shown in Fig. 6, calibrating installation stage body A, B, C three-phase are connected with a reometer respectively, before the formal calibrating of table meter, will do running-up test.When doing running-up test, as stage body alarm sound, red led is bright, observes reometer registration; If A phase current table electric current is 0, represent A phase current fault, with this, can judge fault separate.
2, calibration equipment step-down
When doing running-up test, the current/voltage of calibrating installation need to be risen to the numerical value of the national metrological verification regulations < < of People's Republic of China (PRC) electronic type AC energy meter JJG596-2012 > > measurement verification regulations regulation.If verification current/voltage rises to specified value, do not need calibrating installation step-down, continue calibrating; When occurring that verification electric current cannot rise after fault, by stop calibrating by lower platform body scram button 2, calibrating installation voltage will drop to zero gradually, then with multitester conversion switch, is threaded to " AC700V " gear, measure the potential winding of electric energy meter, confirmation voltage has reduced to zero.
3, multimeter self check
Multitester conversion switch is threaded to Test Diode gear
, then red and black is shown to excellent short circuit, if multimeter hummer sends continuous and loud sound, LCDs shows " 000 " printed words simultaneously, illustrates that function of multimeter is normal, by self check; Otherwise use the multimeter of normal operation instead or keep in repair this fault multimeter.
4, survey " bug list "
The principle of surveying is exactly the electric energy meter current coil of using multimeter measurements with hummer to be serially connected, coil itself be path and also resistance very little, so need only coil, contact fine whole loop with calibrating installation and lead to, otherwise will open circuit.Wherein, if stage body binding post and the loose contact of table meter connection terminal will cause and open circuit, if stage body connects table, quantity is more, will cause which to be found a period of time and only open circuit.Therefore, the present invention has adopted multimeter detection circuit method.Concrete mode is: red, the black table rod of multimeter is overlapped on respectively to the inlet wire binding post of first electric energy meter current coil (coil is separate to be determined by step 1) and second/epi-position (if 24 epi-positions are exactly the 12nd; If 16 epi-positions are exactly the 8th table; The like) the electric current outlet binding post of electric energy meter, if multimeter hummer sends interrupted overcast sound, the numeral that LCDs shows is simultaneously larger, illustrates that " bug list " is at surveying range; If the contrary continuous and loud sound of hummer, the numeral that LCDs shows is less, illustrate that bug list, at another surveying range, then measures by compromise method iteration, final definite " bug list " position.
5, verification again
Again articulate " bug list ", with multimeter test, after confirming that fault has been got rid of, more again on calibrating installation, all show meter.
In order to describe above-mentioned flow process in detail, the example of two calibratings will be enumerated again below.Wherein, four tables getting in 16 tables carry out checkout, are divided into two kinds of inspection situations of Fig. 3 and Fig. 4:
As shown in Figure 4, be that three-phase electric energy meter above-mentioned to be examined and determine is through examining and determine trouble-free schematic diagram.Its basis for estimation is that multimeter is tested certain and passed in and out and communicate mutually, without abnormal show.On the stage body of this calibrating installation, articulated the three-phase electric energy meter of four 3*220/380V3*5 (60) A, first the rotary switch of multimeter is threaded to Ω gear, then the Toona sureni of multimeter 8 is overlapped on the inlet wire binding post of A phase current coil of first table meter, black excellent 9 are overlapped on the outlet binding post of the 4th table meter A phase current coil, now the hummer of multimeter sends loud buzz continuously, the numeral of liquid crystal display is less, within the scope of≤0.5 Ω, is normal demonstration greatly.This surveying range non-fault table is described.
As shown in Figure 5, being three-phase electric energy meter above-mentioned to be examined and determine has fault and carries out the schematic diagram of localization of fault through calibrating.Now, on stage body, articulated the three-phase electric energy meter of four 3*220/380V3*5 (60) A, first the rotary switch of multimeter is threaded to Ω gear, then the Toona sureni of multimeter 8 is overlapped on the inlet wire binding post of B phase current coil of first table meter, black excellent 9 are overlapped on the outlet binding post of the 4th table meter B phase current coil, the hummer sound prompting nothing of multimeter or intermittent, liquid crystal display is simultaneously 0 or glimpses between different numerical value, illustrates that bug list is at this surveying range.By that analogy, dwindle sensing range and can find bug list soon.
Each above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (7)
1. an electric energy meter calibrating apparatus, comprise stage body, it is characterized in that, on described stage body, be provided with: multimeter, calibrating pilot lamp, scram button, stage body electric current wiring interface, electric energy meter current wiring interface, epi-position data display unit, and a plurality of for holding electric energy meter epi-position and a plurality of meter hanging frame that articulates electric energy meter to be examined and determine of electric energy meter to be examined and determine, wherein, described a plurality of epi-position is connected in series.
2. electric energy meter calibrating apparatus according to claim 1, is characterized in that, described in electric energy meter to be examined and determine be two-phase electric energy meter or three-phase electric energy meter.
3. electric energy meter calibrating apparatus according to claim 1, is characterized in that, described multimeter is digimer.
4. according to the electric energy meter calibrating apparatus one of claim 1-3 Suo Shu, it is characterized in that, described multimeter is with hummer.
5. according to the electric energy meter calibrating apparatus one of claim 1-3 Suo Shu, it is characterized in that, described electric energy meter current wiring interface comprises the binding post of multiple different colours, and every kind of color represents the phase place number that electric energy meter to be examined and determine is corresponding.
6. according to the electric energy meter calibrating apparatus one of claim 1-3 Suo Shu, it is characterized in that the binding post of corresponding two same colors of each phase place of electric energy meter to be examined and determine.
7. a method of carrying out the calibrating of current return trouble spot according to the electric energy meter calibrating apparatus one of claim 1-6 Suo Shu, comprises the steps:
(1) confirm that fault is separate;
(2) calibration equipment step-down;
(3) multimeter self check;
(4) survey " bug list ";
(5) verification again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545452.3A CN103558579B (en) | 2013-11-06 | 2013-11-06 | The method that electric energy meter calibrating apparatus is carried out the calibrating of current loop trouble point |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310545452.3A CN103558579B (en) | 2013-11-06 | 2013-11-06 | The method that electric energy meter calibrating apparatus is carried out the calibrating of current loop trouble point |
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| CN103558579A true CN103558579A (en) | 2014-02-05 |
| CN103558579B CN103558579B (en) | 2016-09-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459260A (en) * | 2014-11-13 | 2015-03-25 | 国家电网公司 | Intelligent mounting system and detection method for electric energy measuring instruments |
| CN109459716A (en) * | 2018-10-26 | 2019-03-12 | 浙江涵普电力科技有限公司 | Secondary circuit status checkout instrument calibrating installation |
| CN113189535A (en) * | 2021-05-17 | 2021-07-30 | 国网江苏省电力有限公司无锡供电分公司 | Electric energy meter calibrating installation with electric shock prevention function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854487A (en) * | 2012-04-19 | 2013-01-02 | 辽宁省电力有限公司铁岭供电公司 | Parallel communication calibrating device of three-phase intelligent electric energy meter |
| CN102928812A (en) * | 2012-11-22 | 2013-02-13 | 深圳市航天泰瑞捷电子有限公司 | Calibration method and device for electric energy meter |
| CN203643593U (en) * | 2013-11-06 | 2014-06-11 | 国网安徽省电力公司淮南供电公司 | Electric energy meter verification apparatus |
-
2013
- 2013-11-06 CN CN201310545452.3A patent/CN103558579B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854487A (en) * | 2012-04-19 | 2013-01-02 | 辽宁省电力有限公司铁岭供电公司 | Parallel communication calibrating device of three-phase intelligent electric energy meter |
| CN102928812A (en) * | 2012-11-22 | 2013-02-13 | 深圳市航天泰瑞捷电子有限公司 | Calibration method and device for electric energy meter |
| CN203643593U (en) * | 2013-11-06 | 2014-06-11 | 国网安徽省电力公司淮南供电公司 | Electric energy meter verification apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459260A (en) * | 2014-11-13 | 2015-03-25 | 国家电网公司 | Intelligent mounting system and detection method for electric energy measuring instruments |
| CN109459716A (en) * | 2018-10-26 | 2019-03-12 | 浙江涵普电力科技有限公司 | Secondary circuit status checkout instrument calibrating installation |
| CN113189535A (en) * | 2021-05-17 | 2021-07-30 | 国网江苏省电力有限公司无锡供电分公司 | Electric energy meter calibrating installation with electric shock prevention function |
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| CN103558579B (en) | 2016-09-07 |
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