CN109406881A - Handcart-type switch loop resistance tests special vice - Google Patents
Handcart-type switch loop resistance tests special vice Download PDFInfo
- Publication number
- CN109406881A CN109406881A CN201811507396.3A CN201811507396A CN109406881A CN 109406881 A CN109406881 A CN 109406881A CN 201811507396 A CN201811507396 A CN 201811507396A CN 109406881 A CN109406881 A CN 109406881A
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- CN
- China
- Prior art keywords
- handcart
- caliper
- fixing card
- loop resistance
- type switch
- 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.)
- Pending
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Breakers (AREA)
Abstract
The present invention relates to a kind of handcart-type switch loop resistances to test special vice, including caliper, it is movably arranged on the holding limit link mechanism of caliper lower part, it is fixed at the fixing card support on caliper top, it is fixed at the petal type fixing card of fixing card holder top, the Limit screw that intercalation is fixedly connected in caliper hole and with holding link mechanism and the graduation mark being arranged on Limit screw, it provides a kind of compact and flexible, it is easy to carry, facilitate operation, insulate good test specific purpose tool, to improve accuracy and the working efficiency of this test, the safety of safeguard work personnel.
Description
Technical field
It is dedicated for using when the test of indoor hand-cart type high-voltage circuit breaker (switch) loop resistance that the present invention relates to one kind
Testing tool is related to field of electrical equipment.
Background technique
Handcart type breaker is mounted on breaker on the handcart that can be extracted out, for regular circuit breakers, handcart
Formula switch has higher economy, and its since the advantage of structure eliminates the use of traditional switch two sides disconnecting link
Small in size save in substation is taken up space, and is also due to wheelbarrow switch with good interchangeability, in wheelbarrow switch failure
After tripping, the handcart of failure can be pulled out and replace spare handcart in time by operation maintenance personnel, can so save inspectability examination
The time tested, improve power supply reliability, be based on the above various advantages, handcart type breaker be widely used in each 10kV and
The power grid of 35kV voltage class.
According to related regulatory requirements, the loop resistance test of handcart type breaker is switch factory, handover, customary and diagnosis
Property test when essential project.The purpose of loop resistance test is the contact resistance between the dynamic and static contact of monitoring breaker；
Contact resistance can be such that loss of the conductor when being powered increases, so that the temperature of contact position be enabled to increase.Therefore the size of contact resistance
Current-carrying capability when normal circuit breaker work is directly affected, influences the cutting ability of short circuit current to a certain extent；To sum up institute
It states, the every phase galvanic circle resistance value of breaker is a significant data of breaker installation, maintenance, inspection of quality.
Present most common circuit resistance tester clamps breaker both ends using testing clamp and carries out through-flow measurement, this survey
Method for testing has good effect for measurement regular circuit breakers, but for handcart-type switch, often tester is brought not
Just: 1, traditional test is clamped since reasons in structure is very unstable to be fixed on finger of breaker, usually more difficult time-consuming effort；2,
Since handcart-type switch structure determines, when handcart carries out the testing position needed for loop resistance test, spring touch finger
It is i.e. different from breaker normal operating condition in relaxed state, additional contact resistance error can be introduced at this time, will cause survey
Test result is bigger than normal, cannot really reflect that breaker dynamic/static contact contacts situation, so as to cause checking experiment personnel to equipment state
Erroneous judgement.
Summary of the invention
It is an object of the invention to be actually needed according to handcart type breaker loop resistance test site, above-mentioned tradition is overcome
Shortcomings when operation, provide it is a kind of it is compact and flexible, easy to carry, facilitate operation, the good test specific purpose tool of insulation, from
And improve the accuracy of this test and the safety of working efficiency, safeguard work personnel.
Handcart-type switch loop resistance tests special vice, including caliper, and the holding limit for being movably arranged on caliper lower part connects
Linkage is fixed at the fixing card support on caliper top, is fixed at the petal type fixing card of fixing card holder top,
The Limit screw that intercalation is fixedly connected in caliper hole and with holding link mechanism and the graduation mark being arranged on Limit screw.
The holding limit link mechanism includes the insulation hand-held pole for being symmetricly set on caliper side, is rotatably arranged on insulation
Connecting rod on bar, the attachment base of activity setting connection boom end；
The attachment base is fixedly connected with Limit screw.
Stop nut is provided on the Limit screw, the stop nut is used with Limit screw and is threadedly coupled.
The Limit screw top, which is provided with, struts contact；
The petal type fixing card is provided with no less than 12 card columns；
The card column is evenly distributed on fixing card support.
The petal type fixing card inner wall is oblique, and the inner wall tilt angle of the petal type fixing card, which is greater than, struts touching
The tilt angle of head.
Petal type fixing card side is provided with upper layer and lower layer groove, and groove is provided with spring.
It is that the present invention obtains the utility model has the advantages that
It by the petal type fixing card of setting, effectively when breaker is tested, is uniformly contacted, mechanism is held in the insulation of setting
With strut contact, be easy to use operation, insulate good test specific purpose tool, thus improve this test accuracy and work
Efficiency, the safety of safeguard work personnel.
Detailed description of the invention
Attached drawing 1 is general structure schematic diagram of the invention；
Attached drawing 2 is overlooking structure diagram of the invention；
Attached drawing 3 is the schematic diagram of the section structure of the invention；
In the accompanying drawings
1 caliper, 2 connecting rods, 3 attachment bases, 4 stop nuts, 5 Limit screws, 6 strut contact, 7 petal type fixing cards, 8 fixing cards
Support, 9 insulation hand-held poles.
Specific embodiment
As illustrated in the accompanying drawings from 1 to 3, handcart-type switch loop resistance tests special vice, including caliper 1, is movably arranged on caliper 1
The holding of lower part limits link mechanism, is fixed at the fixing card support 8 on 1 top of caliper, is fixed at fixing card support
The petal type fixing card 7 on top, the Limit screw 5 and setting that intercalation is fixedly connected in 1 hole of caliper and with holding link mechanism
Graduation mark 10 on Limit screw 5, scale are successively 110kV, 35kV, 10kV from the bottom up.
The holding limit link mechanism includes the insulation hand-held pole 9 for being symmetricly set on 1 side of caliper, is rotatably arranged on absolutely
Connecting rod 2 on edge bar 9, the attachment base 3 of activity setting 2 end of connecting rod；
The attachment base 3 is fixedly connected with Limit screw 5.
Stop nut 4 is provided on the Limit screw 5, the stop nut 4 is used with Limit screw 5 and is threadedly coupled.
5 top of Limit screw, which is provided with, struts contact 6；
The petal type fixing card 7 is provided with no less than 12 card columns；
The card column is evenly distributed on fixing card support 8.
7 inner wall of petal type fixing card is oblique, and the inner wall tilt angle of the petal type fixing card 7, which is greater than, to be strutted
The tilt angle of contact 6.
7 side of petal type fixing card is provided with upper layer and lower layer groove, and groove is provided with spring 11, it is therefore an objective to provide
The power tied tight.
1 side of caliper is provided with two p-wires.
In use, according to the size of tested voltage, nut is rotated into the corresponding position of graduation mark, then will
Petal type fixing card is inserted into breaker, and the hand-held pole that insulate of then firmly holding with a firm grip struts contact for petal type at the top of Limit screw
The card column of fixing card struts, and completes test.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to previous embodiment
Documented technical solution is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. handcart-type switch loop resistance tests special vice, which is characterized in that including caliper (1), be movably arranged under caliper (1)
The holding in portion limits link mechanism, is fixed at the fixing card support (8) on caliper (1) top, is fixed at fixing card branch
The petal type fixing card (7) on seat top, the Limit screw that intercalation is fixedly connected in caliper (1) hole and with holding link mechanism
(5) and graduation mark on Limit screw (5) is set.
2. handcart-type switch loop resistance tests special vice according to claim 1, which is characterized in that the holding limit connects
Rod structure includes the insulation hand-held pole (9) for being symmetricly set on caliper (1) side, the connecting rod being rotatably arranged on insulating bar (9)
(2) and activity setting connecting rod (2) end attachment base (3)；
The attachment base (3) is fixedly connected with Limit screw (5).
3. handcart-type switch loop resistance tests special vice according to claim 1, which is characterized in that the Limit screw
(5) it is provided on stop nut (4), the stop nut (4) uses with Limit screw (5) and is threadedly coupled.
4. handcart-type switch loop resistance tests special vice according to claim 1, which is characterized in that the Limit screw
(5) top, which is provided with, struts contact (6).
5. handcart-type switch loop resistance tests special vice according to claim 1, which is characterized in that the petal type is fixed
Card (7) is provided with no less than 12 card columns；
The card column is evenly distributed on fixing card support (8).
6. testing special vice with handcart-type switch loop resistance described in 4 any one according to claim 1, which is characterized in that institute
State that petal type fixing card (7) inner wall is oblique, the inner wall tilt angle of the petal type fixing card (7), which is greater than, struts contact
(6) tilt angle.
7. handcart-type switch loop resistance tests special vice according to claim 1, which is characterized in that the petal type is fixed
Card (7) side is provided with upper layer and lower layer groove, and groove is provided with spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507396.3A CN109406881A (en) | 2018-12-11 | 2018-12-11 | Handcart-type switch loop resistance tests special vice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507396.3A CN109406881A (en) | 2018-12-11 | 2018-12-11 | Handcart-type switch loop resistance tests special vice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109406881A true CN109406881A (en) | 2019-03-01 |
Family
ID=65458399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507396.3A Pending CN109406881A (en) | 2018-12-11 | 2018-12-11 | Handcart-type switch loop resistance tests special vice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109406881A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351987A (en) * | 2020-04-22 | 2020-06-30 | 国家电网有限公司 | Handcart switch loop resistance test wiring device |
| CN114878868A (en) * | 2022-05-06 | 2022-08-09 | 童鑫 | Self-adaptive wire clamp device for loop resistance test |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120319692A1 (en) * | 2010-02-24 | 2012-12-20 | Lalonge Patrick | Mobile system for measuring abnormality detection parameters of a switch in a high voltage electrical substation |
| CN103091519A (en) * | 2013-01-29 | 2013-05-08 | 福建省电力有限公司 | Handcart switch return circuit resistance test rivet type cable clamp |
| CN203786206U (en) * | 2014-04-03 | 2014-08-20 | 国家电网公司 | Measuring auxiliary device for centrally-mounted cabinet handcart switch loop resistor test |
| CN204495969U (en) * | 2015-03-31 | 2015-07-22 | 国网浙江义乌市供电公司 | For the measurement servicing unit of 10kV handcart-type switch loop resistance test |
| CN105388362A (en) * | 2015-11-25 | 2016-03-09 | 国家电网公司 | Breaker switch direct current resistance measuring device |
| CN107132416A (en) * | 2017-04-24 | 2017-09-05 | 李世明 | A kind of loop resistance method of testing |
| CN207074115U (en) * | 2017-05-09 | 2018-03-06 | 国网福建省电力有限公司 | A kind of docking experimental rig of wheelbarrow switch moving contact |
| CN207396542U (en) * | 2017-10-18 | 2018-05-22 | 广州供电局有限公司 | Handcart type breaker loop resistance tests connection plug |
-
2018
- 2018-12-11 CN CN201811507396.3A patent/CN109406881A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120319692A1 (en) * | 2010-02-24 | 2012-12-20 | Lalonge Patrick | Mobile system for measuring abnormality detection parameters of a switch in a high voltage electrical substation |
| CN103091519A (en) * | 2013-01-29 | 2013-05-08 | 福建省电力有限公司 | Handcart switch return circuit resistance test rivet type cable clamp |
| CN203786206U (en) * | 2014-04-03 | 2014-08-20 | 国家电网公司 | Measuring auxiliary device for centrally-mounted cabinet handcart switch loop resistor test |
| CN204495969U (en) * | 2015-03-31 | 2015-07-22 | 国网浙江义乌市供电公司 | For the measurement servicing unit of 10kV handcart-type switch loop resistance test |
| CN105388362A (en) * | 2015-11-25 | 2016-03-09 | 国家电网公司 | Breaker switch direct current resistance measuring device |
| CN107132416A (en) * | 2017-04-24 | 2017-09-05 | 李世明 | A kind of loop resistance method of testing |
| CN207074115U (en) * | 2017-05-09 | 2018-03-06 | 国网福建省电力有限公司 | A kind of docking experimental rig of wheelbarrow switch moving contact |
| CN207396542U (en) * | 2017-10-18 | 2018-05-22 | 广州供电局有限公司 | Handcart type breaker loop resistance tests connection plug |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351987A (en) * | 2020-04-22 | 2020-06-30 | 国家电网有限公司 | Handcart switch loop resistance test wiring device |
| CN114878868A (en) * | 2022-05-06 | 2022-08-09 | 童鑫 | Self-adaptive wire clamp device for loop resistance test |
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Application publication date: 20190301 |