CN202600124U - Large-power ohm standard device - Google Patents
Large-power ohm standard device Download PDFInfo
- Publication number
- CN202600124U CN202600124U CN 201220094174 CN201220094174U CN202600124U CN 202600124 U CN202600124 U CN 202600124U CN 201220094174 CN201220094174 CN 201220094174 CN 201220094174 U CN201220094174 U CN 201220094174U CN 202600124 U CN202600124 U CN 202600124U
- Authority
- CN
- China
- Prior art keywords
- manganese
- base alloy
- alloy plate
- conducting rod
- ohm standard
- 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 the field of electric testing, and discloses a large-power ohm standard device which comprises two conducting rods and two potential terminals. A manganese-base alloy plate is connected between the two conducting rods, and the two potential terminals are respectively welded at middle positions of the two conducting rods. The large-power ohm standard device can be used for high current value calibration and quantity transfer, and can also be used for correcting electric testing instruments provided with large current functions and supporting the use of the electric testing instruments. The large-power ohm standard device is applied to calibrations of large current loads born by equipment such as cables, motors, large switches and the like.
Description
Technical field
The utility model relates to electrical measurement support equipment technical field, particularly a kind of high-power ohm standard.
Background technology
In correction and supporting process, use powerful ohm standard, the resistance accuracy of ohm standard and correction and the supporting precision that bearing power directly has influence on test instrumentation to electric test instrument with big function of current.Existing ohm standard resistance accuracy is poor, and power is single, can't satisfy the normal correction of electrical measurement instrument and supporting.
The utility model content
The purpose of the utility model is in order to solve the problems of the technologies described above, a kind of high-power ohm standard to be provided, satisfying the supporting demand of different corrections in the hope of realizing the accurate and multiple power of resistance.
The technical scheme that the utility model is taked is:
A kind of high-power ohm standard comprises two conducting rods and two potential ends, it is characterized in that, between said two conducting rods, connects the manganese-base alloy plate, and in the centre position of said two conducting rods, welding is provided with said two potential ends respectively.
Further, said manganese-base alloy plate is positioned at the centre position of said conducting rod.
Further, in said two conducting rods upper end link is set.
Further; Said link is welded on the said conducting rod through welding material; Said manganese-base alloy plate is welded on the said conducting rod through welding material, and said potential end is welded on the said conducting rod through welding material, and said welding material comprises that silver content is 60% to 80% silver soldering material.
Further, said manganese-base alloy plate is a polylith, and parallel connection is welded in the middle of said two conducting rods.
Further, said manganese-base alloy plate is divided into two groups up and down, is separately positioned on the top, centre position and the below, centre position of said two conducting rods.
Further, one or more in the said polylith manganese-base alloy plate carries out being connected on the said conducting rod after the bending.
Further, said manganese-base alloy plate is bent into U font or double-H groove weld font.
Further, said link, conducting rod and potential end are the red copper material.
The beneficial effect of the utility model is:
1, resistance accuracy can reach 10
-4Ohm;
2, power can be arranged to multiplely, and making through its electric current is 200 amperes, 500 amperes, 1000 amperes;
3, accuracy class can reach 50 ppm, 100ppm.
Description of drawings
Accompanying drawing 1 is the front view of the utility model first embodiment;
Accompanying drawing 2 is vertical views of the utility model first embodiment;
Accompanying drawing 3 is front views of the utility model second embodiment;
Accompanying drawing 4 is vertical views of the utility model second embodiment;
Accompanying drawing 5 is front views of the utility model the 3rd embodiment;
Accompanying drawing 6 is vertical views of the utility model the 3rd embodiment.
Label in the accompanying drawing is respectively:
1. link; 2. link;
3. conducting rod; 4. conducting rod;
5. manganese-base alloy plate; 6. potential end;
7. potential end.
Embodiment
Elaborate below in conjunction with the embodiment of accompanying drawing to the high-power ohm of the utility model standard.
Embodiment one
Referring to accompanying drawing 1,2, high-power ohm standard comprises link 1, link 2, and link 1 is through being welded to connect on conducting rod 3, and link 2 is through being welded to connect on conducting rod 4.Conducting rod 3 has certain width with conducting rod 4; Welding manganese-base alloy plate 5 between conducting rod 3 and conducting rod 4; Manganese-base alloy plate 5 is selected novel precise type manganese-base alloy plate for use, and is different according to the resistance of manganese-base alloy plate 5, realizes through the accurate demarcation of ohm standard to the instrument current value.In the present embodiment, adopt six manganese-base alloy plate 5 parallel connections to be arranged between conducting rod 3 and the conducting rod 4, six blocks of manganese-base alloy plates 5 are divided into two groups, are symmetricly set between conducting rod 3 and the conducting rod 4, and the spacing between every side manganese-base alloy plate 5 equates.In the vertical direction, the position of manganese-base alloy plate 5 are positioned at the centre of conducting rod 3 and conducting rod 4, make its precision higher.On conducting rod 3 and conducting rod 4, be welded to connect potential end 6 and potential end 7, the sample position of potential end is directly connected to the functional parameter of high-power ohm standard, is taken at the conducting rod centre position through the position of calculating potential end.The electric current that every block of manganese-base alloy plate 5 bears is 33.3 amperes, and six blocks of manganese-base alloy plates make instrument realize 200 amperes accurate demarcation.The resistance of every block of manganese-base alloy plate 5 can be made as 10
-3Ohm, 10
-4Ohm through the size of manganese-base alloy plate 5 is set, is realized the precise current setting.Manganese-base alloy plate 5 is a matrix by accurate sheet material manganese-base alloy, and the manganese-base alloy plate is the basis by the red copper material of special processing.Welding material is that 60% to 80% starting material are intermediate materials by silver content, and preferred silver content is 70%.Link 1, link 2, conducting rod 3, conducting rod 4, potential end 6, potential end 7 all can adopt the red copper material.
Embodiment two
Referring to accompanying drawing 3,4; The difference of present embodiment and embodiment one is; The electric current that the difference of the parallelly connected arrangement mode of six blocks of manganese-base alloy plates 5, every block of manganese-base alloy plate 5 are born is 83.3 amperes, six accurate demarcation of 500 amperes that manganese-base alloy plate 5 is realized instrument.In the present embodiment, six blocks of manganese-base alloy plates 5 are divided into two groups, and the group three, parallel connection is arranged on the above and below in the vertical centre position of conducting rod 3 and conducting rod 4 respectively.After per three blocks of manganese-base alloy plates 5 are separately positioned in Width preceding of conducting rod 3 and conducting rod 4; Because the power of ohm standard is big more; The size of its manganese-base alloy plate 5 is big more, in order to reduce the size of whole ohm standard, manganese-base alloy plate 5 is carried out bending; Be bent into the U font, occupy to reduce the space.
Embodiment three
Referring to accompanying drawing 5,6, the difference of present embodiment and embodiment two is that manganese-base alloy plate 5 is eight, and the electric current that every block of manganese-base alloy plate 5 bears is 125 amperes, eight accurate demarcation of 1000 amperes that manganese-base alloy plate 5 is realized instrument.In the present embodiment, eight blocks of manganese-base alloy plates 5 are divided into two groups, and the 3rd group four, parallel connection is arranged on the above and below in the vertical centre position of conducting rod 3 and conducting rod 4 respectively.Per four blocks of manganese-base alloy plates 5 are separately positioned on the middle both sides of the Width of conducting rod 3 and conducting rod 4; Along with the power of ohm standard is increasing; The size of its manganese-base alloy plate 5 is bigger than the manganese-base alloy plate among the embodiment two, in order to reduce the size of whole ohm standard, manganese-base alloy plate 5 is carried out bending; Be bent into the double-H groove weld font, occupy to reduce the space.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (9)
1. high-power ohm standard comprises two conducting rods and two potential ends, it is characterized in that: between said two conducting rods, connect the manganese-base alloy plate, in the centre position of said two conducting rods, welding is provided with said two potential ends respectively.
2. high-power ohm standard according to claim 1, it is characterized in that: said manganese-base alloy plate is positioned at the centre position of said conducting rod.
3. high-power ohm standard according to claim 1 is characterized in that: in said two conducting rods upper end link is set.
4. high-power ohm standard according to claim 3, it is characterized in that: said link is welded on the said conducting rod, and said manganese-base alloy plate is welded on the said conducting rod, and said potential end is welded on the said conducting rod.
5. according to each described high-power ohm standard in the claim 1 to 4, it is characterized in that: said manganese-base alloy plate is a polylith, and parallel connection is welded in the middle of said two conducting rods.
6. high-power ohm standard according to claim 5, it is characterized in that: said manganese-base alloy plate is divided into two groups up and down, is separately positioned on the top, centre position and the below, centre position of said two conducting rods.
7. high-power ohm standard according to claim 5, it is characterized in that: one or more in the said polylith manganese-base alloy plate carries out being connected on the said conducting rod after the bending.
8. high-power ohm standard according to claim 7, it is characterized in that: said manganese-base alloy plate is bent into U font or double-H groove weld font.
9. high-power ohm standard according to claim 4, it is characterized in that: said link, conducting rod and potential end are the red copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220094174 CN202600124U (en) | 2012-03-14 | 2012-03-14 | Large-power ohm standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220094174 CN202600124U (en) | 2012-03-14 | 2012-03-14 | Large-power ohm standard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600124U true CN202600124U (en) | 2012-12-12 |
Family
ID=47317655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220094174 Expired - Fee Related CN202600124U (en) | 2012-03-14 | 2012-03-14 | Large-power ohm standard device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202600124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866718A (en) * | 2016-03-28 | 2016-08-17 | 杭州大华仪器制造有限公司 | Novel AC/DC shunt |
-
2012
- 2012-03-14 CN CN 201220094174 patent/CN202600124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866718A (en) * | 2016-03-28 | 2016-08-17 | 杭州大华仪器制造有限公司 | Novel AC/DC shunt |
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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: 20121212 Termination date: 20130314 |