CN102236086B - Method and device for inspecting electric energy meter - Google Patents
Method and device for inspecting electric energy meter Download PDFInfo
- Publication number
- CN102236086B CN102236086B CN 201010170907 CN201010170907A CN102236086B CN 102236086 B CN102236086 B CN 102236086B CN 201010170907 CN201010170907 CN 201010170907 CN 201010170907 A CN201010170907 A CN 201010170907A CN 102236086 B CN102236086 B CN 102236086B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- zero line
- live wire
- loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000005611 electricity Effects 0.000 claims abstract description 29
- 238000012795 verification Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract 3
- 230000006870 function Effects 0.000 description 23
- 230000008676 import Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Landscapes
- Testing Relating To Insulation (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a method and device for inspecting an electric energy meter. The method comprises the following steps: respectively setting a current transformer in a zero line loop and a live line loop of a single-phase electric energy meter with an electric stealing prevention function; inputting different current values to the live line and the zero line of the electric energy meter through the current transformer, wherein the difference of different current values is more than or equal to a preset unbalanced threshold; and detecting and determining whether warning information from the electric energy meter is received or not, determining that the electric energy meter passes the inspection if the warning information is received, and otherwise determining that the electric energy meter does not pass the inspection. By applying the method, the electricity stealing prevention function of the electric energy meter is inspected, and the validity of the electricity stealing prevention function of the ex-factory electric energy meter is ensured, and the working efficiency is improved.
Description
Technical field
The present invention relates to field of measuring technique, particularly a kind of method and device that electric energy meter is tested.
Background technology
At present, there is a kind of unidirectional electric energy meter with anti-stealing electricity function, this single-phase electric energy meter live wire adopts manganese copper diverter to sample, zero line adopts current transformer to sample, under the normal condition, the electric current that flows through same electric energy meter live wire and zero line should be equal fully, when stealing takes place after, bigger difference can appear in the electric current that flows through live wire and zero line, has the electric energy meter of anti-stealing electricity function by detecting the difference of live wire and neutral line current, judge whether to take place electricity filching behavior, and according to industry standard, automatically big current terminal is measured, for example, when the electric current difference that flows through electric energy meter live wire and zero line greater than 1 ampere-hour, can determine that electricity filching behavior takes place, and automatically big circuit end be measured.
Along with the electric energy meter widespread use of anti-stealing electricity function, this unidirectional electric energy meter with anti-stealing electricity function itself also needs measured, comes into the market to prevent electric energy meter off quality.For this reason, there is a kind of device that unidirectional electric energy meter is tested at present.As shown in Figure 1, the power amplifier of calibration control module 101 outputs inserts current transformer (CT) 102 and voltage transformer (VT) (PT) 103, first output terminal of CT 102 inserts the live wire input end of electric energy meter 104a, second output terminal of CT 102 inserts the live wire output terminal of unidirectional electric energy meter 104n, and the live wire input/output terminal of unidirectional electric energy meter 104a～104n is connected successively.103 output terminals of PT insert live wire input end and the zero line input end of each unidirectional electric energy meter.The measured value of each unidirectional electric energy meter directly feeds back to calibration control module 101.Have 1,2,3,4 in the unidirectional electric energy meter 104a～104n of anti-stealing electricity function among Fig. 1 and represent 4 connection terminals respectively, wherein, the expression load of vertically discounting between 1,2 connection terminals, transverse crease lines is represented CT, is sampling spot between 3,4 connection terminals.
Using verifying attachment shown in Figure 1 can carry out verification respectively to the live wire of electric energy meter and the error of zero line, with the live wire of check electric energy meter and the accuracy of zero line.But there is following problem at least in this method of inspection:
1, can not test to the anti-stealing electricity function of unidirectional electric energy meter with anti-stealing electricity function.
2, after one of live wire or zero line are carried out verification, must carry out the adjustment of outside line to calibration control module 101 and electric energy meter, could realize the verification to another circuit, complex operation is easily made mistakes.
Summary of the invention
The embodiment of the invention provides a kind of method and device that electric energy meter is tested, and can test to the anti-stealing electricity function of unidirectional electric energy meter with anti-stealing electricity function.
The embodiment of the invention provides a kind of method that electric energy meter is tested, and in zero line loop and the live wire loop of the unidirectional electric energy meter with anti-stealing electricity function one current transformer is set respectively, and described method also comprises:
By described current transformer the live wire of described electric energy meter is imported different current values simultaneously with zero line, wherein, the difference of described different current values is more than or equal to default uneven threshold value;
Detect and judge whether to receive the warning information from described electric energy meter, if receive, then determine described electric energy meter by check, if do not receive, determine that then described electric energy meter is not by check.
Wherein, described method also comprises: close the zero line loop of described electric energy meter, to the live wire loop input current of described electric energy meter, carry out error checking with independent live wire to described electric energy meter separately.
Wherein, described method also comprises: close the live wire loop of described electric energy meter, to the zero line loop input current of described electric energy meter, carry out error checking with independent zero line to described electric energy meter separately.
Wherein, described uneven threshold value is set according to practical application request.
Wherein, described warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information.
The embodiment of the invention also provides a kind of device that electric energy meter is tested, and in zero line loop and the live wire loop of the unidirectional electric energy meter with anti-stealing electricity function one current transformer is set respectively, and described device also comprises:
The electric current input block is used for by described current transformer the live wire of described electric energy meter being imported different current values simultaneously with zero line, and wherein, the difference of described different current values is more than or equal to default uneven threshold value;
Verification unit, for detection of and when judging the warning information that receives from described electric energy meter, determine described electric energy meter by check, for detection of and when judging the warning information that does not receive from described electric energy meter, determine that described electric energy meter is by check.
Wherein, described device also comprises:
The first electric current input block is used for closing the zero line loop of described electric energy meter, independent live wire loop input current to described electric energy meter;
Live wire loop verification unit is used for independent live wire to described electric energy meter and carries out error checking.
Wherein, described device also comprises:
The second electric current input block is used for closing the live wire loop of described electric energy meter, independent zero line loop input current to described electric energy meter,
Zero line loop verification unit is used for independent zero line to described electric energy meter and carries out error checking.
Wherein, described uneven threshold value is set according to practical application request.
Wherein, described warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information.
As seen, use the method and apparatus that the embodiment of the invention provides, import different current values by the live wire to described electric energy meter simultaneously with zero line, and judge whether to receive warning information from described electric energy meter, realized the anti-stealing electricity function with anti-electricity-theft electric energy meter is tested, guaranteed the validity that the electric work that dispatches from the factory can its anti-stealing electricity function.Have again, use the method for the embodiment of the invention, after one of electric energy meter live wire with anti-stealing electricity function or zero line are tested, need not carry out the adjustment of outside line to calibration control module and electric energy meter, just can realize check to another circuit by software control, easy and simple to handle, be difficult for makeing mistakes, and improved work efficiency.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention and technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment and the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the existing device that electric energy meter is tested;
Fig. 2 is the device that electric energy meter is tested according to the embodiment of the invention;
Fig. 3 is the method flow diagram that electric energy meter is tested according to the embodiment of the invention;
Fig. 4 is the device logical organization synoptic diagram that electric energy meter is tested according to the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
For sake of convenience, the following alleged electric energy meter of this paper is the unidirectional electric energy meter with anti-stealing electricity function.
Referring to Fig. 2, it is the device that electric energy meter is tested according to the embodiment of the invention.Its this device specifically comprises: calibration control module 201, a CT 202, the 2nd CT 203, PT 204 and the electric energy meter 205a～205n with anti-stealing electricity function.Wherein, the power amplifier of calibration control module 201 outputs inserts a CT 202, the 2nd CT 203 and PT 204.First output terminal of the one CT 202 inserts the live wire input end L of electric energy meter 205a, and second output terminal of a CT 202 inserts the live wire output terminal L ' of electric energy meter 205n, and the live wire input/output terminal of electric energy meter 205a～205n is connected successively.First output terminal of the 2nd CT 203 inserts the zero line input end N of electric energy meter 205a, and second output terminal of the 2nd CT 203 inserts the zero line output terminal N ' of electric energy meter 205n, and the zero line input/output terminal of electric energy meter 205a～205n is connected successively.PT 204 output terminals insert live wire input end L and the zero line input end N of each electric energy meter.The measured value of each electric energy meter directly feeds back to calibration control module 201.
That is to say that compared with prior art embodiment illustrated in fig. 2, like this, just there is a CT respectively in many one group of CT in zero line loop and the live wire loop of electric energy meter.
Based on the described setting of Fig. 2, the embodiment of the invention also provides a kind of method that electric energy meter is tested, and referring to Fig. 3, specifically comprises:
Step 301, the calibration control module is simultaneously imported different current value to the live wire of described electric energy meter with zero line by current transformer, and wherein, the difference of described different current values is more than or equal to default uneven threshold value;
Here, uneven threshold value can be set according to practical application request, and for example, it is 1A, 2A that anti-electricity-theft uneven threshold values can be set, 3A, 4A, 5A etc., and the embodiment of the invention is not done restriction to the concrete numerical value of uneven threshold value.
Wherein, above-mentioned warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information, in the embodiment of the invention, the concrete manifestation form of warning information is not done restriction.
Need to prove, on the basis of method shown in Figure 3, can also comprise: the calibration control module is closed the zero line loop of described electric energy meter, to the live wire loop input current of described electric energy meter, carries out error checking with independent live wire to described electric energy meter separately.
Wherein, to close the zero line loop of described electric energy meter be exactly the zero line no current that makes electric energy meter to what is called.
Wherein, to the live wire loop input current of described electric energy meter, the specific implementation of carrying out error checking with independent live wire to described electric energy meter is identical with existing mode separately, and the embodiment of the invention no longer elaborates.
Need to prove, on the basis of method shown in Figure 3, can also comprise: the calibration control module is closed the live wire loop of described electric energy meter, to the zero line loop input current of described electric energy meter, carries out error checking with independent zero line to described electric energy meter separately.
Wherein, to close the live wire loop of described electric energy meter be exactly the live wire no current that makes electric energy meter to what is called.
Wherein, to the zero line loop input current of described electric energy meter, the specific implementation of carrying out error checking with independent zero line to described electric energy meter is identical with existing mode separately, and the embodiment of the invention no longer elaborates.
As seen, use the method that the embodiment of the invention provides, import different current values by the live wire to described electric energy meter simultaneously with zero line, and judge whether to receive warning information from described electric energy meter, realized the anti-stealing electricity function with anti-electricity-theft electric energy meter is tested, guaranteed the validity that the electric work that dispatches from the factory can its anti-stealing electricity function.Have again, use the method for the embodiment of the invention, after one of electric energy meter live wire with anti-stealing electricity function or zero line are tested, need not carry out the adjustment of outside line to calibration control module and electric energy meter, just can realize check to another circuit by software control, easy and simple to handle, be difficult for makeing mistakes, and improved work efficiency.
The embodiment of the invention also provides a kind of device that electric energy meter is tested, and referring to Fig. 4, specifically comprises: zero line loop and live wire loop at the unidirectional electric energy meter with anti-stealing electricity function arrange a current transformer respectively, and described device also comprises:
Electric current input block 401 is used for by described current transformer the live wire of described electric energy meter being imported different current values simultaneously with zero line, and wherein, the difference of described different current values is more than or equal to default uneven threshold value;
The described device of Fig. 4 can also comprise:
The first electric current input block (not shown) is used for closing the zero line loop of described electric energy meter, independent live wire loop input current to described electric energy meter;
Live wire loop verification unit (not shown) is used for independent live wire to described electric energy meter and carries out error checking.
The described device of Fig. 4 can also comprise:
The second electric current input block (not shown) is used for closing the live wire loop of described electric energy meter, independent zero line loop input current to described electric energy meter,
Zero line loop verification unit (not shown) is used for independent zero line to described electric energy meter and carries out error checking.
Above-mentioned uneven threshold value is set according to practical application request.
Above-mentioned warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information.
As seen, use the device that the embodiment of the invention provides, import different current values by the live wire to described electric energy meter simultaneously with zero line, and judge whether to receive warning information from described electric energy meter, realized the anti-stealing electricity function with anti-electricity-theft electric energy meter is tested, guaranteed the validity that the electric work that dispatches from the factory can its anti-stealing electricity function.Have again, use the device of the embodiment of the invention, after one of electric energy meter live wire with anti-stealing electricity function or zero line are tested, need not carry out the adjustment of outside line to calibration control module and electric energy meter, just can realize check to another circuit by software control, easy and simple to handle, be difficult for makeing mistakes, and improved work efficiency.
For device embodiment, because it is substantially similar in appearance to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method embodiment is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, here alleged storage medium, as: ROM/RAM, magnetic disc, CD etc.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. method that electric energy meter is tested, it is characterized in that, zero line loop and live wire loop at the unidirectional electric energy meter with anti-stealing electricity function arrange a current transformer respectively, and control closing of described zero line loop and described live wire loop respectively by the calibration control module, wherein, described zero line loop is followed in series to form by described unidirectional electric energy meter zero line input/output terminal, described live wire loop is that the live wire input/output terminal by described unidirectional electric energy meter is followed in series to form, and described method also comprises:
Described calibration control module is simultaneously imported different current value to the live wire of described electric energy meter with zero line by described current transformer, and wherein, the difference of described different current values is more than or equal to default uneven threshold value;
Described calibration control module detects and judges whether to receive the warning information from described electric energy meter, if receive, then determines described electric energy meter by check, if do not receive, determines that then described electric energy meter is not by check.
2. method according to claim 1 is characterized in that, described method also comprises: close the zero line loop of described electric energy meter, to the live wire loop input current of described electric energy meter, carry out error checking with independent live wire to described electric energy meter separately.
3. method according to claim 1 and 2 is characterized in that, described method also comprises: close the live wire loop of described electric energy meter, to the zero line loop input current of described electric energy meter, carry out error checking with independent zero line to described electric energy meter separately.
4. method according to claim 1 is characterized in that, described uneven threshold value is set according to practical application request.
5. method according to claim 1 is characterized in that, described warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information.
6. device that electric energy meter is tested, it is characterized in that, zero line loop and live wire loop at the unidirectional electric energy meter with anti-stealing electricity function arrange a current transformer respectively, and closed the zero line loop of described electric energy meter by the first electric current input block in the described device, independent live wire loop input current to described unidirectional electric energy meter, the second electric current input block in the described device is closed the live wire loop of described unidirectional electric energy meter, independent zero line loop input current to described unidirectional electric energy meter, wherein, described zero line loop is followed in series to form by described unidirectional electric energy meter zero line input/output terminal, described live wire loop is that the live wire input/output terminal by described unidirectional electric energy meter is followed in series to form, and described device also comprises:
The electric current input block is used for by described current transformer the live wire of described electric energy meter being imported different current values simultaneously with zero line, and wherein, the difference of described different current values is more than or equal to default uneven threshold value;
Verification unit, for detection of and when judging the warning information that receives from described electric energy meter, determine described electric energy meter by check, for detection of and when judging the warning information that does not receive from described electric energy meter, determine that described electric energy meter is by check.
7. device according to claim 6 is characterized in that, described device also comprises:
Live wire loop verification unit is used for independent live wire to described electric energy meter and carries out error checking.
8. according to claim 6 or 7 described devices, it is characterized in that described device also comprises:
Zero line loop verification unit is used for independent zero line to described electric energy meter and carries out error checking.
9. device according to claim 6 is characterized in that, described uneven threshold value is set according to practical application request.
10. device according to claim 6 is characterized in that, described warning information comprises sound alarm information, and/or the light warning information, and/or the literal warning information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170907 CN102236086B (en) | 2010-04-29 | 2010-04-29 | Method and device for inspecting electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170907 CN102236086B (en) | 2010-04-29 | 2010-04-29 | Method and device for inspecting electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102236086A CN102236086A (en) | 2011-11-09 |
| CN102236086B true CN102236086B (en) | 2013-07-03 |
Family
ID=44886922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010170907 Active CN102236086B (en) | 2010-04-29 | 2010-04-29 | Method and device for inspecting electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102236086B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412280B (en) * | 2013-07-30 | 2015-12-02 | 杭州厚达自动化***有限公司 | A kind of old detection device of electric energy meter |
| CN104360140B (en) * | 2014-11-28 | 2017-03-15 | 威胜集团有限公司 | Single-phase electric energy meter neutral line current measuring method and measuring circuit |
| CN106097588B (en) * | 2016-06-15 | 2018-11-02 | 无锡市恒通电器有限公司 | A kind of single-phase cost-control intelligent ammeter |
| CN107064853B (en) * | 2017-03-23 | 2020-05-15 | 山东电力研究院 | Electric energy meter voltage withstand test system and method with automatic test voltage switching function |
| CN108008338B (en) * | 2017-11-13 | 2020-04-14 | 国网江西省电力有限公司电力科学研究院 | Automatic identification method for ineffective access of neutral line of electric energy meter |
| CN110488217B (en) * | 2019-08-23 | 2021-06-22 | 宁波迦南智能电气股份有限公司 | Multi-meter mutual detection method for metering accuracy of electric energy meter |
| CN110515028B (en) * | 2019-08-23 | 2021-08-31 | 宁波迦南智能电气股份有限公司 | Method for monitoring terminal heating of single-phase electric energy meter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085880A2 (en) * | 2003-12-31 | 2005-09-15 | Actaris Uk Limited | Electrical power meter |
| CN101038331A (en) * | 2006-03-17 | 2007-09-19 | 彭黎迎 | Mutual-inductor electric energy meter comprehensive calibrator |
| CN101387661A (en) * | 2007-10-08 | 2009-03-18 | 杭州利尔达科技有限公司 | Single-phase electric energy meter capable of avoiding fraudulent use of electricity and measuring calculation method capable of avoiding fraudulent use of electricity |
| CN101408603A (en) * | 2008-11-25 | 2009-04-15 | 湖北省电力公司咸宁供电公司 | Method for detecting electricity theft-proof electric energy meter |
| CN201383001Y (en) * | 2009-03-19 | 2010-01-13 | 重庆电力科学试验研究院 | Device for detecting carrier electric meters in batches |
| JP2010066055A (en) * | 2008-09-09 | 2010-03-25 | Hioki Ee Corp | Method for detecting connection state of electric power measuring instrument |
-
2010
- 2010-04-29 CN CN 201010170907 patent/CN102236086B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085880A2 (en) * | 2003-12-31 | 2005-09-15 | Actaris Uk Limited | Electrical power meter |
| CN101038331A (en) * | 2006-03-17 | 2007-09-19 | 彭黎迎 | Mutual-inductor electric energy meter comprehensive calibrator |
| CN101387661A (en) * | 2007-10-08 | 2009-03-18 | 杭州利尔达科技有限公司 | Single-phase electric energy meter capable of avoiding fraudulent use of electricity and measuring calculation method capable of avoiding fraudulent use of electricity |
| JP2010066055A (en) * | 2008-09-09 | 2010-03-25 | Hioki Ee Corp | Method for detecting connection state of electric power measuring instrument |
| CN101408603A (en) * | 2008-11-25 | 2009-04-15 | 湖北省电力公司咸宁供电公司 | Method for detecting electricity theft-proof electric energy meter |
| CN201383001Y (en) * | 2009-03-19 | 2010-01-13 | 重庆电力科学试验研究院 | Device for detecting carrier electric meters in batches |
Non-Patent Citations (2)
| Title |
|---|
| 上进下出双回路计量电能表工作原理及检测方法研究;夏水斌等;《仪表技术》;20081031(第10期);35-37 * |
| 夏水斌等.上进下出双回路计量电能表工作原理及检测方法研究.《仪表技术》.2008,(第10期), |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102236086A (en) | 2011-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102236086B (en) | Method and device for inspecting electric energy meter | |
| CN101949990B (en) | IC pin open short circuit test method | |
| CN106569170B (en) | A kind of metering device secondary circuit detector and its detection method | |
| US20120245869A1 (en) | Systems, Methods, and Apparatus for Detecting Theft and Status of Electrical Power | |
| CN101482602A (en) | Detection analysis system of relay-protection tester | |
| CN104316822A (en) | Method for rapidly and accurately judging false wiring of metering device | |
| CN101231310A (en) | Voltage measurement instrument and method having improved automatic mode operation | |
| CN102901621A (en) | Method and device for testing solenoid valves | |
| KR101772808B1 (en) | Circuit and method for test and analysis through-silicon-via | |
| CN102854485A (en) | Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method | |
| CN104459588A (en) | System and method for current sensor test | |
| CN105116278A (en) | Electric energy meter missort line tracker | |
| CN101153899A (en) | Automatic measuring system and method of digital multimeter | |
| CN206331127U (en) | The node type seismic prospecting instrument of wave detector state is monitored in real time | |
| CN105182157A (en) | Neutral point multi-point grounding detection device based on high-accuracy detection current | |
| CN201319063Y (en) | Detecting and analyzing device of relay protection testing device | |
| CN104678349A (en) | Interface detection device for electric energy meter and system of interface detection device | |
| CN113253155B (en) | Load testing device and method for autotransformer | |
| CN111190134B (en) | Dynamic response time characteristic test method and verification device for electric energy meter | |
| CN105890808A (en) | Temperature calibrator for main transformer | |
| CN102062847B (en) | The detection method of semiconductor parameter measuring system | |
| CN205506982U (en) | Automatic conduction testing of multichannel cable and test result transmission system with malfunction alerting function | |
| CN102062845A (en) | Lightning stroke counter calibration device | |
| CN112068067A (en) | On-load error detection system of epitope isolation transformer of assembly line metrological verification device | |
| CN205642673U (en) | A temperature check gauge for main transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU DAYOU TECHNOLOGY DEVELOPMENT CO., LTD. ST Free format text: FORMER OWNER: HANGZHOU DAYOU TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20121015 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121015 Address after: 310009 No. 291, Jianguo Middle Road, Hangzhou, Zhejiang Applicant after: Hangzhou Electric Power Bureau Applicant after: Hangzhou Dayou Technology Development Co., Ltd. Applicant after: State Grid Corporation of China Address before: 310009 No. 291, Jianguo Middle Road, Hangzhou, Zhejiang Applicant before: Hangzhou Electric Power Bureau Applicant before: Hangzhou Dayou Technology Development Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |