CN205333740U - Direct -current resistance tester - Google Patents
Direct -current resistance tester Download PDFInfo
- Publication number
- CN205333740U CN205333740U CN201620064050.0U CN201620064050U CN205333740U CN 205333740 U CN205333740 U CN 205333740U CN 201620064050 U CN201620064050 U CN 201620064050U CN 205333740 U CN205333740 U CN 205333740U
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- fixture
- resistance
- electric wire
- test platform
- measuring
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- 238000012360 testing method Methods 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 20
- 238000013461 design Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010205 computational analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a direct -current resistance tester, including resistance test platform, PC end, temperature -sensing ware, resistance test platform both ends all are equipped with electric wire clamping device, and the corresponding centre gripping of two electric wire clamping device is at the both ends of awaiting measuring wire metal inner core, and every electric wire clamping device is including setting up the first anchor clamps and setting second anchor clamps two parts in the inboard in the resistance test platform outside, interconnect's computer and display screen are drawn together to the PC hand ladle, should the design based on the computer, have measurement accuracy height, characteristics that the analysis controllability is strong, the strong means of a modernization are provided for the measurement of cable resistance. Simultaneously because the instrument measuring scope is wide, the precision is high, can make the precision resister tester simultaneously.
Description
Technical field
This utility model relates to a kind of resistance testing device, is specifically related to a kind of instrument for measuring DC resistance。
Background technology
Cable resistance direct relation the quality of cable, and owing to cable resistance is general all relatively low, and the certainty of measurement of cable resistance requires higher, and therefore the quality of the test device of cable resistance is extremely important。At present, the method of testing of cable resistance mainly has three kinds: one is bridge measurement method, this method is more traditional, it is according to three known arm resistance values, obtains tested brachium pontis electricity class value Rx, by the restriction of brachium pontis measuring resistance precision and measure traverse line and current detector sensitivity, the most low-resistance of its measurement is mostly at m Ω, and it is mechanical gear shift, easily oxidated, affect certainty of measurement；The second is relative method, connecting by measured resistance and measuring resistance and pass to constant current, compare two ohmically voltages and obtain measured resistance, this method also can't do without measuring resistance, and suitable with tested resistance, the performance that otherwise two amplifying circuits are different will affect certainty of measurement；Along with the development of electronic technology, had again constant flow method, namely applied constant current on tested wire and measure the voltage on this wire, i.e. its resistance known, owing to the then accuracy of measurement limiting this method of past constant current technology and amplifying technique is 10-3, the third method, computer-based, adopt A/D conversion by constant pressure and flow signal amplification technique thus drawing measurement data。
Utility model content
In order to solve the problems referred to above, it is provided that a kind of special equipment detecting power cable semi-conductive screen resistivity, this utility model devises a kind of instrument for measuring DC resistance。
Concrete technology contents of the present utility model is: a kind of instrument for measuring DC resistance, including resistance test platform, PC end, temperature inductor, resistance test platform two ends are equipped with clamper for electric wire, two clamper for electric wire correspondences are clamped in the two ends of wire metals inner core to be measured, and each clamper for electric wire includes the first fixture being arranged on outside resistance test platform and the second fixture two parts being arranged on inner side；
PC end includes interconnective host computer and display screen, and two first fixtures are connected on the corresponding interface of host computer by testing current line, and two second fixtures are connected on the corresponding interface of host computer by voltage tester line；Host computer is connected to temperature sensor by connecting line。
First fixture and the separate setting of the second fixture, wherein the first fixture of one end clamper for electric wire is assemblied on resistance test platform by being slidably matched, to being provided with screw drive mechanism by fixture；Detection data reception module and data conversion module it is provided with in host computer。
Described fixture include by guide pillar be slidably installed in clamp base the portion that fixes to clamp and drive clamping section, described clamping section is made up of copper material, testing current line and voltage tester line are connected in clamp portion, between two clamping sections, correspondence is extended with some interlaced tablettings, and two clamping section tabletting correspondence end faces are provided with the fixing groove of V-type；Clamping section is driven to be provided with screw drive mechanism；The clamping section of fixture is equipped with p-wire connecting bolt；Between the portion that fixes to clamp and the driving clamping section of the second fixture, corresponding tabletting quantity is one；It is provided with rule between the clamper for electric wire at resistance test platform two ends。
Detection data reception module and data conversion module it is provided with inside host computer, and Survey Software is installed, comprising the electric parameter of various standardized cable in software database, software can be made directly comparison and eliminate the error that environmental factors is brought, and the function that software has is as follows:
Measure the unidirectional current groups such as electric wire, contact, resistor；Measure electric wire length；Measure the high-voltage breakdown point position of electric wire；The D.C. resistance of measuring transformer and phase unbalance factor, line unbalance factor；Measure shield semiconductors resistivity；Wide scope measures resistance, measures gear and can automatically judge conversion；Measure ambient temperature and wire resistance temperature coefficient converts automatically；Only needing input specification model for conventional electric wire, cable detection, system automatically provides relevant examination criteria value；Ω/km value after direct-reading actual measured value and automatically conversion, automatic computing, judges testing result automatically；Available forward and reverse current measurement resistance；Data base can manually add and inquire about；Have data store, show, call, printing function。
Advantageous Effects of the present utility model is: this design is computer-based, utilize high-precision constant current technology and stable small-signal amplifying technique, adopt A/D conversion by constant pressure and flow signal amplification technique thus drawing measurement data, system is made to become a fully functional cable resistance test system, there is certainty of measurement height, feature that computational analysis control ability is strong, the measurement for cable resistance provides a modern powerful measure。Simultaneously because apparatus measures wide ranges, precision are high, precision resister tester can be also served as。
Accompanying drawing explanation
Accompanying drawing 1 is this apparatus structure sketch；
Accompanying drawing 2 is the attached view of resistance test platform；
Accompanying drawing 3 is the first clamp structure sketch；
Accompanying drawing 4 is the second clamp structure sketch；
Accompanying drawing 5 is software system flow chart；
Accompanying drawing 6 is system hardware structure block diagram。
In figure 1 for host computer, 2 for display screen, 3 for temperature inductor, 4 for rule, 5 for resistance test platform, 6 for testing current line, 7 for voltage tester line, 8 be the first fixture, 9 be the second fixture, 10 for screw drive mechanism, 11 for wire to be measured, 12 for drive clamping section, 13 for guide pillar, 14 for p-wire connecting bolt, 15 for fix to clamp portion, 16 be tabletting。
Detailed description of the invention
A kind of instrument for measuring DC resistance, referring to Fig. 1-6: include resistance test platform 5, PC end, temperature inductor 3, resistance test platform 5 two ends are equipped with clamper for electric wire, two clamper for electric wire correspondences are clamped in the two ends of wire 11 metal inside to be measured, and each clamper for electric wire includes the first fixture 8 being arranged on outside resistance test platform 5 and second fixture 9 two parts being arranged on inner side；
PC end includes interconnective host computer 1 and display screen 2, and two first fixtures 8 are connected on the corresponding interface of host computer 1 by testing current line 6, and two second fixtures 9 are connected on the corresponding interface of host computer 1 by voltage tester line 7；Host computer 1 is connected to temperature sensor by connecting line。
First fixture 8 and the second separate setting of fixture 9, wherein the first fixture 8 of one end clamper for electric wire is assemblied on resistance test platform 5 by being slidably matched, to being provided with screw drive mechanism 10 by fixture；Detection data reception module and data conversion module it is provided with in host computer 1。
Described fixture include by guide pillar 13 be slidably installed in clamp base the portion that fixes to clamp 15 and drive clamping section 12, described clamping section is made up of copper material, testing current line 6 and voltage tester line 7 are connected in clamp portion, between two clamping sections, correspondence is extended with some interlaced tablettings 16, and the corresponding end faces of two clamping section tablettings 16 are provided with the fixing groove of V-type；Driving clamping section 12 to be provided with screw drive mechanism 10, it drives bolt end to be connected to driving handwheel；The clamping section of fixture is equipped with p-wire connecting bolt 14；Between the portion that fixes to clamp 15 and the driving clamping section 12 of the second fixture 9, corresponding tabletting 16 quantity is one；It is provided with rule 4 between the clamper for electric wire at resistance test platform 5 two ends, is used for treating survey line and carries out linear measure longimetry。
Sample is fixed on fixture, tension。Instrument connecting line correspondence is connected on two current terminals of fixture, owing to the resistance of line cable is very little, is subject to various interference effect and measures, for ensureing certainty of measurement, all measurement lines keeping parallelism of should trying one's best is close, not pitch of the laps, and measurement line loop defendance area will be made minimum。
The measurement of wire:
After computer booting, the specifications and models of input measured conductor, such as BV polyvinyl chloride insulation 2.5mm2Electric wire, then input " BV-2.5 " in " specifications and models ", system will the maximum DC resistance of standard performed by this kind of line of automatic spring and standard-required。Then conductor kind, input report number and product information are selected。" forward measurement " or " reversely measuring " two kinds of traverse survey modes are set in software, carry out result after measuring the DC resistance of this kind of electric wire and preserve and print。
The measurement of resistor: identical with the measuring method of electric wire, each test clip is sandwiched in resistor two ends, it is ensured that current cable clamp is on the first fixture 8。
Measure the length of electric wire: choose the electric wire to be measured of a full-length, draw the resistance value R of this section of electric wire, then measure the total resistance value of electric wire again。Total length is drawn through computer computing。
The high-voltage breakdown point position measurement lamp function of the measurement of DCR of Transformer unbalance factor, electric wire it is additionally provided with in software。
Claims (6)
1. an instrument for measuring DC resistance, including resistance test platform, PC end, temperature inductor, it is characterized in that: resistance test platform two ends are equipped with clamper for electric wire, two clamper for electric wire correspondences are clamped in the two ends of wire metals inner core to be measured, and each clamper for electric wire includes the first fixture being arranged on outside resistance test platform and the second fixture two parts being arranged on inner side；
PC end includes interconnective host computer and display screen, and two first fixtures are connected on the corresponding interface of host computer by testing current line, and two second fixtures are connected on the corresponding interface of host computer by voltage tester line；Host computer is connected to temperature sensor by connecting line。
2. instrument for measuring DC resistance according to claim 1, it is characterized in that: the first fixture and the separate setting of the second fixture, wherein the first fixture of one end clamper for electric wire is assemblied on resistance test platform by being slidably matched, to being provided with screw drive mechanism by fixture。
3. instrument for measuring DC resistance according to claim 1, is characterized in that: be provided with detection data reception module and data conversion module in host computer。
4. instrument for measuring DC resistance according to claim 1, it is characterized in that: described fixture include by guide pillar be slidably installed in clamp base the portion that fixes to clamp and drive clamping section, described clamping section is made up of copper material, testing current line and voltage tester line are connected in clamp portion, between two clamping sections, correspondence is extended with some interlaced tablettings, and two clamping section tabletting correspondence end faces are provided with the fixing groove of V-type；Clamping section is driven to be provided with screw drive mechanism。
5. instrument for measuring DC resistance according to claim 4, is characterized in that: be equipped with p-wire connecting bolt on the clamping section of fixture；Between the portion that fixes to clamp and the driving clamping section of the second fixture, corresponding tabletting quantity is one。
6. instrument for measuring DC resistance according to claim 1, is characterized in that: be provided with rule between the clamper for electric wire at resistance test platform two ends。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064050.0U CN205333740U (en) | 2016-01-22 | 2016-01-22 | Direct -current resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064050.0U CN205333740U (en) | 2016-01-22 | 2016-01-22 | Direct -current resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205333740U true CN205333740U (en) | 2016-06-22 |
Family
ID=56319301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620064050.0U Expired - Fee Related CN205333740U (en) | 2016-01-22 | 2016-01-22 | Direct -current resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205333740U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051644A (en) * | 2017-12-25 | 2018-05-18 | 安徽博达通信工程监理有限责任公司 | A kind of cable resistance detecting system |
| CN108333430A (en) * | 2018-04-16 | 2018-07-27 | 德阳微影智能科技有限责任公司 | A kind of full-automatic machine vision copper bar volume resistivity detection device |
| CN108872707A (en) * | 2018-04-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of electric wire and cable conductor D.C. resistance aided measurement device and measurement method |
| CN109298242A (en) * | 2018-11-26 | 2019-02-01 | 广西广缆科技集团有限公司 | A device for measuring the DC resistance of a cable |
| CN109307805A (en) * | 2018-09-30 | 2019-02-05 | 张家港立志传导新材料有限公司 | A kind of copper binding wire resistance meter for being easily installed or dismantling |
| CN109507500A (en) * | 2018-11-08 | 2019-03-22 | 国家电网有限公司 | A kind of dedicated computing device for electrical test |
| CN110412354A (en) * | 2019-08-30 | 2019-11-05 | 国网安徽省电力有限公司培训中心 | Device and method for measuring DC resistance per unit length of wire and cable |
| CN112067895A (en) * | 2020-08-25 | 2020-12-11 | 中国电力科学研究院有限公司 | Cable conductor DC resistance test device |
| CN113092861A (en) * | 2019-12-23 | 2021-07-09 | 中南大学 | Detection clamp and detection system |
| CN113238096A (en) * | 2021-04-29 | 2021-08-10 | 国网新疆电力有限公司电力科学研究院 | Wire and cable direct current resistance parameter measuring device |
| CN113884768A (en) * | 2021-10-22 | 2022-01-04 | 中国铁道科学研究院集团有限公司标准计量研究所 | A contact wire resistance measuring device |
-
2016
- 2016-01-22 CN CN201620064050.0U patent/CN205333740U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051644A (en) * | 2017-12-25 | 2018-05-18 | 安徽博达通信工程监理有限责任公司 | A kind of cable resistance detecting system |
| CN108333430A (en) * | 2018-04-16 | 2018-07-27 | 德阳微影智能科技有限责任公司 | A kind of full-automatic machine vision copper bar volume resistivity detection device |
| CN108872707A (en) * | 2018-04-28 | 2018-11-23 | 国网山东省电力公司电力科学研究院 | A kind of electric wire and cable conductor D.C. resistance aided measurement device and measurement method |
| CN109307805B (en) * | 2018-09-30 | 2023-11-24 | 张家港立志传导新材料有限公司 | Resistance tester for copper clad wire convenient to installation or dismantlement |
| CN109307805A (en) * | 2018-09-30 | 2019-02-05 | 张家港立志传导新材料有限公司 | A kind of copper binding wire resistance meter for being easily installed or dismantling |
| CN109507500A (en) * | 2018-11-08 | 2019-03-22 | 国家电网有限公司 | A kind of dedicated computing device for electrical test |
| CN109298242A (en) * | 2018-11-26 | 2019-02-01 | 广西广缆科技集团有限公司 | A device for measuring the DC resistance of a cable |
| CN110412354A (en) * | 2019-08-30 | 2019-11-05 | 国网安徽省电力有限公司培训中心 | Device and method for measuring DC resistance per unit length of wire and cable |
| CN110412354B (en) * | 2019-08-30 | 2024-05-07 | 国网安徽省电力有限公司培训中心 | A device and method for measuring the DC resistance per unit length of electric wire and cable |
| CN113092861A (en) * | 2019-12-23 | 2021-07-09 | 中南大学 | Detection clamp and detection system |
| CN112067895A (en) * | 2020-08-25 | 2020-12-11 | 中国电力科学研究院有限公司 | Cable conductor DC resistance test device |
| CN113238096A (en) * | 2021-04-29 | 2021-08-10 | 国网新疆电力有限公司电力科学研究院 | Wire and cable direct current resistance parameter measuring device |
| CN113884768A (en) * | 2021-10-22 | 2022-01-04 | 中国铁道科学研究院集团有限公司标准计量研究所 | A contact wire resistance measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 |
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| CF01 | Termination of patent right due to non-payment of annual fee |