CN205067535U - Dolly formula circuit breaker return circuit resistance test appurtenance - Google Patents
Dolly formula circuit breaker return circuit resistance test appurtenance Download PDFInfo
- Publication number
- CN205067535U CN205067535U CN201520847948.0U CN201520847948U CN205067535U CN 205067535 U CN205067535 U CN 205067535U CN 201520847948 U CN201520847948 U CN 201520847948U CN 205067535 U CN205067535 U CN 205067535U
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- China
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- aid
- test
- circuit breaker
- resistance test
- trolley type
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000013341 scale-up Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 206010021703 Indifference Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
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Abstract
The utility model relates to a dolly formula circuit breaker return circuit resistance test appurtenance, this appurtenance include the hollow sleeve of a pair of cylindricality, and the outer wall is processed into a plurality of diameter sizes that scale up in proper order, constitutes the echelonment, insert the circuit breaker with it during the resistance test of return circuit and are qualified for the next round of competitions in the ring spring, and move male contact to be applicable to the dolly formula circuit breaker of a plurality of kinds of different contact diameter size of being qualified for the next round of competitions. Utilize the utility model discloses return circuit resistance test accuracy can be increased, the probability of maintainer to the equipment state misjudgement is reduced, the labor intensity of measurement personnel is the probability of duplicate measurements because data are unqualified, is reduced, test the forceps holder and directly press from both sides on appurtenance, avoided the original spring scaling loss that results in because the test forceps holder is local in the mistake, protected the circuit breaker.
Description
Technical field
The utility model relates to a kind of aid in trolley type breaker loop resistor test process, is specifically related to a kind of instrument that can increase test accuracy and the upper and lower wire outlet seat fingertip spring of protection, belongs to mechanical engineering technical field.
Background technology
Primary cut-out is most important protection and opertaing device in an electric system, when electrical network normally runs as requested, is switched on or switched off operating circuit; During grid collapses, under the effect of protective relaying device, the automatic open failure part of isolating switch, with the normal operation of no failure part in guarantee system.Vacuum circuit breaker is the one of primary cut-out, because its insulation and arc-extinguishing medium are all high vacuum and gain the name, when being pumped into 10 in arc-chutes
-4high vacuum time, its dielectric strength is more much higher than the dielectric strength of the SF6 under insulating oil, an atmospheric pressure and air.Vacuum circuit breaker have volume little, lightweight, be applicable to frequent operation, advantage that arc extinguishing need not overhaul, apply very universal in 10kV power distribution network.In transformer station 10kV hyperbaric chamber, it is more and more extensive that trolley type vacuum circuit-breaker is applied, and the quality of its performance directly affects electric power netting safe running.
Loop resistance test is isolating switch extremely important test project, it increases will make arc-chutes contact generate heat seriously, to cause in short circuit current flow room around contact insulating part scaling loss or contact scorification bonding, thus affect trip time and the connecting-disconnecting function of isolating switch.In conventional circuit resistance test process, due to trolley type breaker structure reason, test value confidence level is not high, even there is larger difference between test value and actual value, causes the erroneous judgement to test findings, affects the state evaluation of isolating switch.On the other hand, the testing clamp of tester is clipped on the touch spring of the upper and lower wire outlet seat of isolating switch, and in test process, electric current is greater than 100A, and what easily cause touch spring burns damage.Therefore a kind of novel breaker loop resistance test aid that can solve above two kinds of problems of necessary development, makes checking experiment result more accurate, more convenient operation.
Utility model content
The utility model, for Problems existing in the test of current trolley type vacuum circuit-breaker loop resistance, proposes a kind ofly to improve the accuracy of test and the aid of security, is exclusively used in loop resistance test.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of trolley type breaker loop resistor test aid, this aid comprises a pair cylindricality cannulated sleeve, outer wall is processed into the some diameter dimensions increased progressively successively, form stepped, be inserted in breaker outgoing line seat ring spring during loop resistance test, contact with moving contact, and be applicable to the trolley type isolating switch of several different wire outlet seat contact diameter size.
Preferably, outer wall is processed into three diameter dimensions increased progressively successively.
The diameter dimension of its outer wall, according to contact of breaker spring size, connects with its interference fit.
Preferably, this aid adopts pure copper material.
Preferably, this aid does electroplate process.
The utility model has the advantage of:
1, utilize the utility model can increase loop resistance test accuracy, reduce the probability that maintainer misjudges equipment state;
2, reduce the probability of testing staff's duplicate measurements due to defect of data, reduce labour intensity;
3, test clamp to be directly clipped on aid, avoid the spring scaling loss originally caused because testing clamp is clipped in mistake place, protect isolating switch.
Accompanying drawing explanation
Accompanying drawing 1 is the cut-open view of the utility model preferred embodiment.
Wherein, large tool heads 1, middle tool heads 2, small tool head 3, hollow cavity 4.
Embodiment
The utility model, in conjunction with the pattern of trolley type isolating switch, when ensureing not have any impact to breaker apparatus, makes loop resistance test aid.Aid imitates static contact in switch cubicle, after making it in insertion breaker outgoing line seat ring spring, struts ring and moving contact close contact, extracts rear spring ring energy self-return.
Comprehensive analysis determines to make columniform aid, and outer wall is processed into the some diameter dimensions increased progressively successively, forms stepped, and the diameter of sizes is the trolley type isolating switch in order to suitable for multiple sizes.In order to alleviate test aid weight, easy to use with carry, be processed into hollow cylindrical.In a preferred embodiment, as Fig. 1, there are large tool heads 1, middle tool heads 2, small tool head 3 three diameter dimensions, by analyzing the upper and lower wire outlet seat size statistic of various isolating switch, being designed and sized to of aid:
According to contact of breaker spring size design aid diameter, make it to connect with ring spring interference fit, wire outlet seat ring spring can be inserted smoothly inner, and keep certain clamping force, reduce contact resistance.Mimic-disconnecting switch is in the state of working position, and fingertip contacts well with conductive contact, facilitates loop resistance measurement.
This aid adopts pure copper material, and the conductance of copper product is high, reduces adding due to aid as far as possible, affects the test value of loop resistance, ensures the precisely reliable of test.Aid does electroplate process, to greatest extent the contact resistance of minimizing and wire outlet seat.
By aid, ring spring is strutted, so just can test the true loop resistance that dolly isolating switch normally runs as far as possible.Avoid testing clamp is clipped on the touch spring of the upper and lower wire outlet seat of isolating switch simultaneously, and big current damages touch spring.
Use the utility model carries out trolley type breaker loop resistor testing procedure and is:
1, trolley type isolating switch is pulled to testing position, checks that whether isolating switch is in co-bit, if in a point position, be adjusted to co-bit;
2, a pair test aid is inserted into upper and lower wire outlet seat ring spring, checks and connect whether robust;
3, the testing clamp of circuit resistance tester is clipped on aid, all the other steps and traditional test indifference.
Claims (5)
1. a trolley type breaker loop resistor test aid, it is characterized in that this aid comprises a pair cylindricality cannulated sleeve, outer wall is processed into the some diameter dimensions increased progressively successively, form stepped, be inserted in breaker outgoing line seat ring spring during loop resistance test, contact with moving contact, and be applicable to the trolley type isolating switch of several different wire outlet seat contact diameter size.
2. trolley type breaker loop resistor test aid according to claim 1, is characterized in that outer wall is processed into three diameter dimensions increased progressively successively.
3. trolley type breaker loop resistor test aid according to claim 1, is characterized in that the diameter dimension of outer wall is according to contact of breaker spring size, connects with its interference fit.
4. trolley type breaker loop resistor test aid according to claim 1, is characterized in that this aid adopts pure copper material.
5. trolley type breaker loop resistor test aid according to claim 1, is characterized in that this aid does electroplate process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847948.0U CN205067535U (en) | 2015-10-29 | 2015-10-29 | Dolly formula circuit breaker return circuit resistance test appurtenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520847948.0U CN205067535U (en) | 2015-10-29 | 2015-10-29 | Dolly formula circuit breaker return circuit resistance test appurtenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205067535U true CN205067535U (en) | 2016-03-02 |
Family
ID=55394072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520847948.0U Active CN205067535U (en) | 2015-10-29 | 2015-10-29 | Dolly formula circuit breaker return circuit resistance test appurtenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205067535U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422365A (en) * | 2018-05-15 | 2018-08-21 | 苏州明上***科技有限公司 | A kind of hardware that can replace cutter head |
| CN113900043A (en) * | 2021-10-09 | 2022-01-07 | 北京卫星环境工程研究所 | Testing equipment for measuring system conduction and loop corresponding relation for spacecraft thermal test |
-
2015
- 2015-10-29 CN CN201520847948.0U patent/CN205067535U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422365A (en) * | 2018-05-15 | 2018-08-21 | 苏州明上***科技有限公司 | A kind of hardware that can replace cutter head |
| CN113900043A (en) * | 2021-10-09 | 2022-01-07 | 北京卫星环境工程研究所 | Testing equipment for measuring system conduction and loop corresponding relation for spacecraft thermal test |
| CN113900043B (en) * | 2021-10-09 | 2024-05-28 | 北京卫星环境工程研究所 | Measurement system conduction and loop corresponding relation test equipment for spacecraft thermal test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |