CN203572957U - On-site meter calibration system - Google Patents
On-site meter calibration system Download PDFInfo
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- CN203572957U CN203572957U CN201320789055.6U CN201320789055U CN203572957U CN 203572957 U CN203572957 U CN 203572957U CN 201320789055 U CN201320789055 U CN 201320789055U CN 203572957 U CN203572957 U CN 203572957U
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- meter
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- standard scale
- energy meter
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- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of electric energy measuring examination, and discloses an on-site meter calibration system. The on-site meter calibration system comprises an electric energy meter (1) and a user load (3), two input terminals of the electric energy meter (1) are respectively connected with a live wire and a zero line of commercial power, and the output terminal of the electric energy meter (1) is connected with the user load (3). The on-site meter calibration system also comprises a standard meter (2) and a test load (4), two input terminals of the standard meter (2) are respectively connected with the live wire and the zero line of the commercial power through two clamping heads (5), the output terminal of the standard meter (2) is connected with the input terminal of the test load (4) or the input terminal of the user load (3), and a slide rheostat (6) is connected between the clamping head (5) connected to the live wire of the commercial power and the standard meter (2). The on-site meter calibration system provided by the utility model is simple in structure, convenient to use and low in cost, the meter calibration personnel do not need to dismount the electric energy meter and send the electric energy meter back to a laboratory for calibration, and therefore the working strength of working personnel is reduced.
Description
Technical field
The utility model relates to electric energy metrical inspection technology field, relates in particular to a kind of on-the-spot formula meter correcting system.
Background technology
Electric energy meter is for measuring the instrument of electric flux, the subtle change of measuring accuracy all can directly affect the interests of each side, in order to make the long-term accurate-metering of electric energy meter, electric energy meter except examining and determine in laboratory before putting into operation, within the calibration interval of regulation, carry out beyond periodic calibration, in servicely also should carry out Site Detection.
At present, in laboratory verification, the general standard electric energy meter that adopts is examined and determine electric energy meter to be measured, and this standard electric energy meter common accurate is higher, stability is better, and its cost is also higher than electric energy meter to be measured.
At the scene in test, the on-the-spot chronographic recorder of general employing, but on-the-spot chronographic recorder complex structure, cost are high, and inapplicable for part grown-ups and children district, also have and will after user's electric energy meter dismounting to be measured, take back the correction method that laboratory is detected, but this method is not only made troubles to user, electric energy meter dismounting, install and transport and also increased calibration personnel working strength.
Utility model content
The technical problems to be solved in the utility model is just: for prior art above shortcomings, the utility model provides a kind of on-the-spot formula meter correcting system simple in structure, easy to use, portable.
For achieving the above object, on-the-spot formula meter correcting system of the present utility model, comprise electric energy meter and user load, two input ends of electric energy meter are connected with zero line with civil power live wire respectively, output terminal connects user load, also comprise standard scale and test load, two input ends of standard scale connect respectively civil power live wire and zero line by two chucks, the input end of the output terminal connecting test load of standard scale or the input end of user load, be connected between chuck on civil power live wire and standard scale and be also connected with slide rheostat, for adjusting the power in the loop at standard scale place, make the power on this loop identical with the power in loop, electric energy meter place.
As further improvement of the utility model, between above-mentioned chuck and standard scale, be also connected with switch, slide rheostat is between switch and standard scale.
Further, above-mentioned on-the-spot formula meter correcting system also comprises the timer with switch gearing, and two input ends of timer access civil power live wire and zero line by switch.
Further, above-mentioned being connected between switch on civil power live wire and slide rheostat is also connected with fuse.
Further, the maximum value of above-mentioned slide rheostat is not more than 1 ohm.
With respect to prior art, the utlity model has following advantage and beneficial effect:
1, adopt on-the-spot formula meter correcting system of the present utility model, calibration personnel take back laboratory without pulling down user's electric energy meter, and on-the-spot calibration is convenient, has reduced calibration personnel workload;
2, the utility model is simple in structure, easy to use, cost is low, with low cost, has realized on-the-spot calibration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of embodiment 1.
Marginal data: 1, electric energy meter; 2, standard scale; 3, user load; 4, test load; 5, chuck; 6, slide rheostat; 7, fuse; 8, switch; 9, timer.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited only to this.
[embodiment 1]
As shown in Figure 2, the on-the-spot formula meter correcting system of the present embodiment, comprises electric energy meter 1, standard scale 2, user load 3: two input ends of electric energy meter 1 are connected with zero line N with civil power live wire L respectively, and output terminal connects the input end of user load 3, forms the first loop; Two input ends of standard scale 2 connect respectively civil power live wire L and zero line N by two chucks 5, output terminal connects the input end of user load 3, form second servo loop, in second servo loop, be connected between chuck 5 on civil power live wire L and standard scale 2 and be also connected with slide rheostat 6, the maximum value of slide rheostat 6 is not more than 1 ohm.
Generally, in the table case of user installation electric energy meter 1, civil power live wire L and zero line N before two incoming ends of electric energy meter 1 have one section to be exposed, in this programme, adopt two chucks 5 to clamp respectively the naked section of civil power live wire L and zero line N, and two input ends of the access of the wire by being connected with chuck 5 standard scale 2, the output terminal of standard scale 2 connects identical load with the output terminal of electric energy meter 1, because standard scale 2 is conventional standard electric energy meter in existing laboratory, itself and the parameters (power of normal work energy table 1, internal resistance etc.) all identical, and it harmonizes accurate and stable in laboratory, therefore, they are in the situation that connect identical load, the rotating speed of electric energy meter 1 and standard scale 2 in theory, electric energy metrical is identical, if electric energy meter 1 has error, can detect by standard scale 2 contrasts.In real work, in second servo loop, before standard scale 2, be also connected with slide rheostat 6, can be used for regulating the general power on second servo loop, guarantee that slide rheostat 6 is identical with the general power of electric energy meter 1 with the general power of standard scale 2, be convenient to contrast.Because the internal resistance of standard scale 2 is less, the internal resistance of itself and electric energy meter 1 differs also very little, so the resistance of slide rheostat 6 can not be too large, is limited between 0.1 ohm-1 ohm in the present embodiment.
[embodiment 2]
As shown in Figure 1, the difference of the present embodiment and embodiment 1 is: the on-the-spot formula meter correcting system in the present embodiment also comprises test load 4, and the output terminal of standard scale 2 does not connect the input end of user load 3 and the input end of connecting test load 4.In actual applications, because the various electric mountings in user family are relatively fixing, may there is situation about being not easy to standard scale 2 access user loads 3, in the present embodiment, prepare a test load 4 identical with user load 3 power, for example, during test, user uses the daylight lamp of 20W, this daylight lamp is user load 3, the daylight lamp that tester prepares a 20W simultaneously in addition directly accesses the output terminal of standard scale 2 as test load 4, not destroy user's wiring, is convenient to measure.
[embodiment 3]
On the basis of embodiment 1 or embodiment 2, in the present embodiment, between chuck 5 and standard scale 2, be also connected with switch 8, fuse 7, on live wire link circuit, after switch 8, connect successively fuse 7, slide rheostat 6, standard scale 2.In this programme, switch 8 is set and is convenient to control the test duration, after this meter correcting system installs, according to test, need to open switch 8 tests, closing switch 8 when test finishes, fuse 7, for ensureing that line security arranges, prevents that the second servo loop electric current for testing is too high.
On switch 8, be also connected with the timer 9 with its interlock, two input ends of timer 9 are upper by switch 8 access civil power live wire L and zero line N, and when closing switch 8 starts to test, timer 9 starts timing, compared to manual time-keeping, timer 9 is more accurate and convenient.
Below be only preferred implementation of the present utility model, protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, the some improvements and modifications not departing under the utility model principle prerequisite, should be considered as protection domain of the present utility model.
Claims (5)
1. on-the-spot formula meter correcting system, comprise electric energy meter (1) and user load (3), two input ends of electric energy meter (1) are connected with zero line with civil power live wire respectively, output terminal connects user load (3), it is characterized in that, also comprise standard scale (2) and test load (4), two input ends of standard scale (2) connect respectively civil power live wire and zero line by two chucks (5), the input end of the output terminal connecting test load (4) of standard scale (2) or the input end of user load (3), be connected between chuck (5) on civil power live wire and standard scale (2) and be also connected with slide rheostat (6).
2. on-the-spot formula meter correcting system according to claim 1, is characterized in that, between described chuck (5) and standard scale (2), is also connected with switch (8), and described slide rheostat (6) is positioned between switch (6) and standard scale (2).
3. on-the-spot formula meter correcting system according to claim 2, is characterized in that, also comprises and the timer (9) of switch (8) interlock, and two input ends of timer (9) are by switch (8) access civil power live wire and zero line.
4. according to the on-the-spot formula meter correcting system described in claim 2 or 3, it is characterized in that, be connected between switch (8) on civil power live wire and slide rheostat (6) and be also connected with fuse (7).
5. according to the arbitrary described on-the-spot formula meter correcting system of claims 1 to 3, it is characterized in that, the maximum value of slide rheostat (6) is not more than 1 ohm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201320789055.6U CN203572957U (en) | 2013-12-05 | 2013-12-05 | On-site meter calibration system |
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CN201320789055.6U CN203572957U (en) | 2013-12-05 | 2013-12-05 | On-site meter calibration system |
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CN203572957U true CN203572957U (en) | 2014-04-30 |
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CN201320789055.6U Expired - Lifetime CN203572957U (en) | 2013-12-05 | 2013-12-05 | On-site meter calibration system |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105699758A (en) * | 2016-03-02 | 2016-06-22 | 中国人民解放军91663部队 | Power factor meter with metering interface and method thereof |
WO2021082531A1 (en) * | 2019-10-31 | 2021-05-06 | 河南许继仪表有限公司 | On-site fault diagnosis instrument for intelligent single-phase electric energy meter |
CN114089266A (en) * | 2022-01-21 | 2022-02-25 | 杭州炬华科技股份有限公司 | Meter calibration method and system suitable for single-phase double-loop electric energy meter |
-
2013
- 2013-12-05 CN CN201320789055.6U patent/CN203572957U/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105699758A (en) * | 2016-03-02 | 2016-06-22 | 中国人民解放军91663部队 | Power factor meter with metering interface and method thereof |
CN105699758B (en) * | 2016-03-02 | 2018-10-30 | 中国人民解放军91663部队 | Power-factor meter with metering interface and its method |
WO2021082531A1 (en) * | 2019-10-31 | 2021-05-06 | 河南许继仪表有限公司 | On-site fault diagnosis instrument for intelligent single-phase electric energy meter |
CN114089266A (en) * | 2022-01-21 | 2022-02-25 | 杭州炬华科技股份有限公司 | Meter calibration method and system suitable for single-phase double-loop electric energy meter |
CN114089266B (en) * | 2022-01-21 | 2022-05-20 | 杭州炬华科技股份有限公司 | Meter calibration method and system suitable for single-phase double-loop electric energy meter |
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Granted publication date: 20140430 |
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CX01 | Expiry of patent term |