CN202093159U - Alternating current clamp ammeter calibration instrument - Google Patents
Alternating current clamp ammeter calibration instrument Download PDFInfo
- Publication number
- CN202093159U CN202093159U CN2011201706358U CN201120170635U CN202093159U CN 202093159 U CN202093159 U CN 202093159U CN 2011201706358 U CN2011201706358 U CN 2011201706358U CN 201120170635 U CN201120170635 U CN 201120170635U CN 202093159 U CN202093159 U CN 202093159U
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- CN
- China
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- tyq
- alternating current
- pressure regulator
- clamp
- amperemeter
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to electrical electrotechnical instrument calibrators, in particular to an alternating current clamp ammeter calibration instrument. The alternating current clamp ammeter calibration instrument is characterized by comprising a self-coupled voltage regulator (TYQ) and an alternating current transformer (CT), wherein an input end of the self-coupled voltage regulator (TYQ) is connected with a power socket and further connected with an alternating current mains supply, and an output end of the self-coupled voltage regulator (TYQ) is connected with a primary winding of a current transformer (BLQ), a secondary winding of the current transformer (BLQ) is connected with two ends of a current ring, the alternating current transformer (CT) is arranged on the current ring, and an output end of the alternating current transformer (CT) is connected with two ends of an ammeter. The calibration instrument has high integration level, is scientific, reasonable and simple in design, and can conduct calibration in a laboratory and on site when conducting calibration on the alternating current clamp ammeter. The whole instrument is safe and portable, as well as simple and convenient to use.
Description
Technical field
The utility model relates to a kind of electric electrical instrument tester, especially exchanges the clamp on amperemeter tester.
Background technology
It is the most frequently used electrical measuring instruments of industry electrician such as generating plant, power supply administration, metallurgy, cement, chemical fertilizer, oil that the interchange clamp on amperemeter now is widely used in, generally there are tens of the clamps on amperemeter of interchange a medium-sized generating plant, according to national standard, clamp on amperemeter is all wanted verification once every year, guarantee the accuracy of measurement of clamp on amperemeter, guarantee the safe operation of power equipment with this.
The utility model content
The purpose of this utility model provides a kind of interchange clamp on amperemeter tester, and it can realize integrated, and easy to carry, detect accurately.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of interchange clamp on amperemeter tester, its special feature is, comprise one from even pressure regulator, thereby should be connected with a supply socket from the input end of even pressure regulator and connect electric main, and should be connected with the elementary winding of a current transformer from the output terminal of even pressure regulator, the secondary winding of this current transformer connects the two ends of an electric current loop, and is installed in the D.C mutual-inductor on this electric current loop, the two ends of the output termination reometer of this D.C mutual-inductor.
Wherein be parallel with voltage table at input end from even pressure regulator.
Wherein between the input end of even pressure regulator and supply socket, be in series with on-off circuit.
Wherein between the elementary winding of the output terminal of even pressure regulator and current transformer, also be in series with an overcurrent relay coil, thereby a pair of normally closed node strings of this overcurrent relay is associated in the on-off circuit deenergization when electric current surpasses setting valve.
Wherein on-off circuit adopts the zero-bit exclusive circuit of being made up of relay and pushbutton switch.
The integrated degree of the utility model tester is good, and design science, reasonable, simple when the interchange clamp on amperemeter is carried out verification, can be carried out verification in laboratory and scene.Whole instrument safety, light, easy to use.
Description of drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, a kind of interchange clamp on amperemeter tester, comprise one from even pressure regulator (TYQ), should be from even pressure regulator (TYQ) thus input end be connected with a supply socket and connect electric main, and should be connected with the elementary winding of a current transformer (BLQ) from the output terminal of even pressure regulator (TYQ), the secondary winding of this current transformer (BLQ) connects the two ends of an electric current loop, and be installed in D.C mutual-inductor (CT) on this electric current loop, the two ends of the output termination reometer of this D.C mutual-inductor (CT), be parallel with voltage table at input end in addition, between the input end of even pressure regulator (TYQ) and supply socket, be in series with on-off circuit from even pressure regulator (TYQ).
As shown in Figure 1, on-off circuit adopts the zero-bit exclusive circuit of being made up of relay and pushbutton switch, specifically often open the input end two ends that are connected in parallel on after button (HN), a normally closed button (TN) and an AC relay (C) coil are connected from even pressure regulator (TYQ) by one, this AC relay (C) a pair of often opened node and is connected in parallel on and often opens button (HN) two ends, often opens node and is connected on respectively between the input end and supply socket of even pressure regulator (TYQ) for other two pairs.
Between the elementary winding of the output terminal of even pressure regulator (TYQ) and current transformer (BLQ), also be in series with an overcurrent relay (IJ) coil, this overcurrent relay (IJ) thus a pair of normally closed node strings be associated in the on-off circuit deenergization when electric current surpasses setting valve.
Tester of the present utility model is selected a 1kVA automatic coupling voltage regulator and a 1kVA for use, and 250/1 volt of isolated converters (BLQ) is formed one 0～1000 ampere power current source.The output terminal of automatic coupling voltage regulator connects the elementary winding of current transformer (BLQ), and the secondary winding of current transformer (BLQ) is connected with electric current loop; The secondary winding voltage of this current transformer (BLQ) can provide 0～1000 ampere industrial frequency AC electric current source to use for the interchange clamp on amperemeter verification of various ranges between 0.5～1 volt; This instrument comprises that also one 0～1000 ampere 0.2 grade numeral shows that reometer, one 0～250 volt 0.5 stages of digital display voltage table are as the voltage and current parameter monitoring and measuring.
Tester also is connected to small-sized high sensitivity overcurrent relay (IJ) on the circuit between automatic coupling voltage regulator and the current transformer (BLQ); when the electric current that flows through when this overcurrent relay (IJ) coil surpasses setting valve; the normally closed node of overcurrent relay (IJ) disconnects; power supply A.C. contactor dead electricity disconnects, and has protected light integral type to exchange the clamp on amperemeter tester and has not been damaged.
As shown in Figure 1, during use with exchanging clamp on amperemeter clamping electric current loop part, by the reometer reading on the contrast tester with exchange that the clamp on amperemeter reading is whether consistent to be judged.
Claims (5)
1. one kind exchanges the clamp on amperemeter tester, it is characterized in that: comprise one from even pressure regulator (TYQ), should be from even pressure regulator (TYQ) thus input end be connected with a supply socket and connect electric main, and should be connected with the elementary winding of a current transformer (BLQ) from the output terminal of even pressure regulator (TYQ), the secondary winding of this current transformer (BLQ) connects the two ends of an electric current loop, and be installed in D.C mutual-inductor (CT) on this electric current loop, the two ends of the output termination reometer of this D.C mutual-inductor (CT).
2. interchange clamp on amperemeter tester as claimed in claim 1 is characterized in that: wherein be parallel with voltage table at the input end from even pressure regulator (TYQ).
3. interchange clamp on amperemeter tester as claimed in claim 1 or 2 is characterized in that: wherein be in series with on-off circuit between the input end of even pressure regulator (TYQ) and supply socket.
4. interchange clamp on amperemeter tester as claimed in claim 3, it is characterized in that: wherein between the elementary winding of the output terminal of even pressure regulator (TYQ) and current transformer (BLQ), also be in series with an overcurrent relay (IJ) coil, this overcurrent relay (IJ) thus a pair of normally closed node strings be associated in the on-off circuit deenergization when electric current surpasses setting valve.
5. interchange clamp on amperemeter tester as claimed in claim 3 is characterized in that: wherein on-off circuit adopts the zero-bit exclusive circuit of being made up of relay and pushbutton switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201706358U CN202093159U (en) | 2011-05-26 | 2011-05-26 | Alternating current clamp ammeter calibration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201706358U CN202093159U (en) | 2011-05-26 | 2011-05-26 | Alternating current clamp ammeter calibration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093159U true CN202093159U (en) | 2011-12-28 |
Family
ID=45368219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201706358U Expired - Fee Related CN202093159U (en) | 2011-05-26 | 2011-05-26 | Alternating current clamp ammeter calibration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051631A (en) * | 2017-12-11 | 2018-05-18 | 中国矿业大学 | A kind of automobile using current clamp detection device and its detection method |
| CN113238182A (en) * | 2021-04-12 | 2021-08-10 | 国网河南省电力公司鹤壁供电公司 | On-site electric energy meter load calibration device |
-
2011
- 2011-05-26 CN CN2011201706358U patent/CN202093159U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051631A (en) * | 2017-12-11 | 2018-05-18 | 中国矿业大学 | A kind of automobile using current clamp detection device and its detection method |
| CN113238182A (en) * | 2021-04-12 | 2021-08-10 | 国网河南省电力公司鹤壁供电公司 | On-site electric energy meter load calibration device |
| CN113238182B (en) * | 2021-04-12 | 2023-07-25 | 国网河南省电力公司鹤壁供电公司 | On-spot electric energy meter load calibration equipment that uses |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20130526 |