CN208125819U - Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers - Google Patents
Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers Download PDFInfo
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- CN208125819U CN208125819U CN201820376403.XU CN201820376403U CN208125819U CN 208125819 U CN208125819 U CN 208125819U CN 201820376403 U CN201820376403 U CN 201820376403U CN 208125819 U CN208125819 U CN 208125819U
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- jaw
- handle
- type breaker
- spring
- handcart type
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 210000000080 chela (arthropods) Anatomy 0.000 title claims abstract description 11
- 230000005611 electricity Effects 0.000 title claims abstract description 11
- 238000009413 insulation Methods 0.000 claims description 8
- 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
- 238000013461 design Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
The utility model relates to a kind of handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers, including a pair of of handle, spring and connecting shaft, a pair of of handle is linked together by connecting shaft, spring is mounted on the inside of handle on relative position, the head of two handles is equipped with jaw, and technical characterstic is：Two jaws are respectively insulate jaw and conductive jaw.The utility model is designed reasonably, be greater than equal to 100 amperes progress loop resistance tests to DC current, high current is avoided to pass through the fingertip spring of switch simultaneously, the handcart type breaker loop resistance test of the performance of fingertip spring is not influenced, the jaw rubber design that insulate simultaneously can damage fingertip spring to avoid chucking power, have the characteristics that safe and reliable and easy to use.
Description
Technical field
The utility model belongs to electric current test technology field, and especially a kind of handcart type breaker circuit resistance tester is used
Current loop testing clamp.
Background technique
Breaker galvanic circle direct current return resistance include sleeved conducting rod resistance, conducting rod and contact junction resistance and it is dynamic,
Contact resistance etc. between static contact.Conducting rod resistance will not generally change, other connection resistance and contact electricity at two
(such as contact surface oxidation, remaining has under mechanical sundries or carbide, contact pressure between contact for the influence for hindering due to various factors
Drop, contact area reduce and short circuit current is burnt etc.), usually it increased.So measuring every phase galvanic circle resistance, actually
It is the variation for checking contact resistance and connection resistance between dynamic and static contact, mainly judges whether dynamic/static contact contacts well.
Contact resistance in operation between dynamic/static contact often will increase, and make to overheat under normal operation operating current, especially logical
When crossing short circuit current, contact fever is more serious, and the surrounding that may burn insulate or contact scorification is caused to bond, to influence breaker
Trip time and connecting-disconnecting function, or even generate tripping.
Related regulation regulation, breaker after mounting, periodically (including big light maintenance) and after cut-offfing the certain number of short circuit current,
It will carry out galvanic circle D.C. resistance testing experiment.The method of measurement Contact Resistance of Circuit Breaker generallys use direct current pressure drop
Method.Related regulatory requirements, institute are greater than to DC current equal to 100 amperes, make the very thin film resistance breakdown on contact surface, institute
Test resistance value and actual resistance meet.
Handcart type breaker circuit resistance tester testing clamp at present, majority are electric current, voltage circuit mould independent of one another
Formula, tester testing clamp includes that 2 current clamps and 2 voltage signals clamp.It carries out circuit in opponent's vehicle type breaker
When resistance test, current loop test clamp will unavoidably be clamped on fingertip spring, and the test electric current of 100A is enough bullet
Spring burns red and annealing, so that weakness occurs in fingertip spring, so that the contact condition between fingertip, contact is deteriorated.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of design rationally, it is safe and reliable and make
It is clamped with convenient handcart type breaker circuit resistance tester electricity consumption stream loop-around test.
The utility model solves its technical problem and adopts the following technical solutions to achieve：
A kind of handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers, including a pair of of handle, spring and company
Spindle, a pair of of handle are linked together by connecting shaft, and the spring is mounted on the inside of handle on relative position, two handles
Head is equipped with jaw, and two jaws are respectively insulate jaw and conductive jaw.
The insulation jaw is to be equipped with rubber sheath in the inside of jaw, and the conduction jaw is equipped in the inside of jaw
Conductive copper.
Jaw distinguishing identifier is equipped with a jaw outer surface.
Power supply line access device is equipped in the outside of a handle to be used to power supply line being linked into testing clamp.
The advantages of the utility model and effect：
Two jaws of the utility model are respectively insulate jaw and conductive jaw, can satisfy regulatory requirements, are being given
DC current is greater than equal to 100 amperes progress loop resistance tests, while avoiding high current by the fingertip spring of switch, no
The handcart type breaker loop resistance test of the performance of fingertip spring is influenced, while insulating the design of jaw rubber can be to avoid clamping
Power damages fingertip spring, has the characteristics that design is reasonable, safe and reliable and easy to use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure, 1- handle, 2- spring, 3- insulate jaw, and 4- jaw identification marking, 5- rubber sheath, 6- conductive copper, 7- leads
Electric jaw, 8- power supply line access device, 9- power supply line, 10- connecting shaft.
Specific embodiment
The utility model embodiment is further described below in conjunction with attached drawing：
A kind of handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers, as shown in Figure 1, including a pair of of handle
1, spring 2 and connecting shaft 10, the pair of handle are linked together by connecting shaft, and the spring 2 is mounted on phase on the inside of handle
To being used to provide chucking power on position, power supply line access device 8 is equipped in the outside of a handle and is used to for power supply line 9 being linked into
On testing clamp, the front end of the pair of handle is respectively insulate jaw 3 and conductive jaw 7, and the insulation jaw is in jaw
Inside is equipped with rubber sheath 5, and the conduction jaw is to be equipped with conductive copper 6 in the inside of jaw.For the ease of distinguishing the jaw that insulate
With conductive jaw, being equipped with jaw distinguishing identifier 4 in insulation jaw outer surface (can also be equipped with jaw in conductive jaw and distinguish mark
Know).
The jaw that the utility model clamps testing current is designed to there is certain elastic rubber insulation jaw, to be used to
It is clamped on fingertip spring.When opponent's vehicle type breaker carries out loop resistance test, this insulation jaw is clamped in fingertip bullet
Chucking power is provided on spring, when the test electric current more than or equal to 100 amperes enters handcart by the pincers conducting of another testing current
When the fingertip of formula breaker, it can be avoided high current and directly pass through the fingertip spring of switch, while insulating the design of jaw rubber can
Fingertip spring is damaged to avoid chucking power.
The application method of the utility model is：
(1) insulating glove is put on, according to circuit resistance tester operation instructions, on correct link circuit resistance meter
Test connection；
(2) test current pincers are held, insulation jaw and conductive jaw are distinguished by jaw distinctive mark；
(3) insulation jaw is held on fingertip spring, conductive jaw is clamped on fingertip；
(4) tester experiment power supply is connected, is tested, test data is recorded；
(5) tester experiment power supply is closed, test connection and ground line are successively removed, completes test.
It is emphasized that embodiment described in the utility model be it is illustrative, without being restrictive, therefore this reality
Embodiment described in specific embodiment is not limited to novel, it is all according to the present utility model by those skilled in the art
The other embodiments that technical solution obtains also belong to the range of the utility model protection.
Claims (4)
1. a kind of handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers, including a pair of of handle, spring and connection
Axis, a pair of of handle are linked together by connecting shaft, and the spring is mounted on the inside of handle on relative position, the head of two handles
Portion is equipped with jaw, it is characterised in that：Two jaws are respectively insulate jaw and conductive jaw.
2. handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers according to claim 1, feature exist
In：The insulation jaw is to be equipped with rubber sheath in the inside of jaw, and the conduction jaw is to be equipped with conduction in the inside of jaw
Copper.
3. handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers according to claim 1 or 2, feature
It is：Jaw distinguishing identifier is equipped with a jaw outer surface.
4. handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers according to claim 1 or 2, feature
It is：Power supply line access device is equipped in the outside of a handle to be used to power supply line being linked into testing clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376403.XU CN208125819U (en) | 2018-03-20 | 2018-03-20 | Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820376403.XU CN208125819U (en) | 2018-03-20 | 2018-03-20 | Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208125819U true CN208125819U (en) | 2018-11-20 |
Family
ID=64199316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820376403.XU Active CN208125819U (en) | 2018-03-20 | 2018-03-20 | Handcart type breaker circuit resistance tester electricity consumption stream loop-around test pincers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208125819U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624369A (en) * | 2020-05-28 | 2020-09-04 | 国网河南省电力公司郑州供电公司 | Insulation wire clamp for measuring loop resistance of vacuum circuit breaker |
| CN112103674A (en) * | 2020-09-23 | 2020-12-18 | 国网山东省电力公司夏津县供电公司 | Special clamp for mechanical characteristic test of circuit breaker |
| CN113985103A (en) * | 2021-10-25 | 2022-01-28 | 深圳供电局有限公司 | Current clamp for use in tested current-carrying conductor pair |
-
2018
- 2018-03-20 CN CN201820376403.XU patent/CN208125819U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624369A (en) * | 2020-05-28 | 2020-09-04 | 国网河南省电力公司郑州供电公司 | Insulation wire clamp for measuring loop resistance of vacuum circuit breaker |
| CN112103674A (en) * | 2020-09-23 | 2020-12-18 | 国网山东省电力公司夏津县供电公司 | Special clamp for mechanical characteristic test of circuit breaker |
| CN113985103A (en) * | 2021-10-25 | 2022-01-28 | 深圳供电局有限公司 | Current clamp for use in tested current-carrying conductor pair |
| CN113985103B (en) * | 2021-10-25 | 2023-12-08 | 深圳供电局有限公司 | Current clamp for measured current carrying wire alignment |
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