CN209590094U - Testing clamp and central cabinet circuit breaker loop resistance test device - Google Patents
Testing clamp and central cabinet circuit breaker loop resistance test device Download PDFInfo
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- CN209590094U CN209590094U CN201920029379.7U CN201920029379U CN209590094U CN 209590094 U CN209590094 U CN 209590094U CN 201920029379 U CN201920029379 U CN 201920029379U CN 209590094 U CN209590094 U CN 209590094U
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- contact
- strut
- support rod
- testing
- testing clamp
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- 238000012360 testing method Methods 0.000 title claims abstract description 97
- 238000009413 insulation Methods 0.000 claims description 10
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to central cabinet circuit breaker loop resistance test equipment technical field more particularly to a kind of testing clamp and central cabinet circuit breaker loop resistance test devices.In the structure of testing clamp, handle is fixed on support rod, and the shaft perpendicular to support rod is connected between the first strut and support rod；Elastic structure is connected between handle and the first strut, the first contact is mounted on one end of the first strut, and elastic structure and the first contact are located at the two sides of support rod；Second strut is mounted on support rod, and the second contact is mounted on one end of the second strut and is oppositely arranged up and down with the first contact, and the first contact and the second contact with the fingertip of Mume flower contact for abutting.Central cabinet circuit breaker loop resistance test device includes above-mentioned testing clamp.Testing clamp and central cabinet circuit breaker loop resistance test device provided by the utility model, does not easily cause equipment damage, is convenient for operation and security risk is smaller.
Description
Technical field
The utility model relates to central cabinet circuit breaker loop resistance test equipment technical field more particularly to a kind of testing clamps
And central cabinet circuit breaker loop resistance test device.
Background technique
Central cabinet circuit breaker plays act foot as the important control equipment in electric system, to the safe and stable operation of power grid
The effect of weight, the size of galvanic circle resistance value can its product quality of accurate response and operating status, be breaker system
A significant data in making, install, checking and accepting, overhauling can directly judge breaker by actual measurement galvanic circle resistance value
Pass through the performance of carrying current when long-term through-flow and short-circuit.
Currently, the measurement pincers in central cabinet circuit breaker loop resistance test device are generally the logical of the unified configuration of instrument producer
With spring clip type testing clamp, when measurement, need to connect two with the testing current line of circuit resistance tester and voltage tester line respectively
The measurement connect is clamped while being clipped on two Mume flower contacts of the same phase to form galvanic circle.Testing clamp is mostly zigzag, if with surveying
Fingertip is easily crushed when examination pincers clamping fingertip, if spring is easily burnt when clamping fingertip and spring with testing clamp, causes equipment damage；
In addition, the fingertip gap because of Mume flower contact is smaller, testing clamp is difficult to clamp, and has the risk for collapsing out, falling off clamping, not only
It brings inconvenience to measurement work, and there is also very big security risks to equipment and testing crew.
To sum up, how to overcome the drawbacks described above of the testing clamp in existing central cabinet circuit breaker loop resistance test device is
Those skilled in the art's technical problem urgently to be resolved.
Utility model content
The purpose of this utility model is to provide a kind of testing clamp and central cabinet circuit breaker loop resistance test devices, with slow
It solves and easily causes equipment damage existing for the testing clamp in central cabinet circuit breaker loop resistance test device in the prior art, be difficult to
Operation and the larger technical problem of security risk.
Testing clamp provided by the utility model, including support rod, handle, the first strut, the second strut, the first contact and
Two contacts.
Wherein, the handle is fixed on the support rod, is connected with and is turned between first strut and the support rod
Axis, the shaft are arranged perpendicular to the support rod；It is connected with elastic structure between the handle and first strut, institute
State one end that the first contact is mounted on first strut, and the elastic structure and first contact be located at it is described
The two sides of support rod；Second strut is mounted on the support rod, and second contact is mounted on second strut
One end and with first contact up and down be oppositely arranged.
First contact and second contact with the fingertip of Mume flower contact for abutting, and first contact and institute
The second contact is stated to be respectively used to be electrically connected with the testing current line of circuit resistance tester and voltage tester line.
Preferably, as an embodiment, first strut is between the handle and second strut,
And first contact is mounted on the upside of first strut, second contact is mounted on the downside of second strut.
Preferably, as an embodiment, insulation set between first contact and first strut, it is described
Insulation set between second contact and second strut.
Preferably, as an embodiment, one end of first strut is equipped with the first insulating part, and described first
Contact is mounted on first insulating part；One end of second strut is equipped with the second insulating part, the second contact peace
On second insulating part.
Preferably, as an embodiment, pass through the first hinge between first contact and first insulating part
Spindle is hinged, between second contact and second insulating part by the second articulated shaft it is hinged, first articulated shaft and
Second articulated shaft is arranged in parallel with the shaft.
Preferably, as an embodiment, the face that first contact and second contact are contacted with fingertip is equal
For the cambered surface of protrusion.
Preferably, as an embodiment, the support rod is prism structure, offer on second strut with
The through-hole that the support rod matches, the through-hole on second strut are slidably matched with the support rod.
Preferably, as an embodiment, limit card block is provided on the support rod, second strut is located at
Between first strut and the limit card block, and the limit card block is used to second strut being limited in the support
On bar.
Preferably, as an embodiment, first contact is detachably connected with the testing current line, described
Second contact is detachably connected with the voltage tester line.
Correspondingly, the utility model additionally provides a kind of central cabinet circuit breaker loop resistance test device, including above-mentioned survey
Examination pincers, further include circuit resistance tester.
Be provided with two groups of p-wires on the circuit resistance tester, p-wire described in two groups respectively with two tests
Pincers correspond to, and p-wire described in every group includes testing current line and voltage tester line, the testing current line with it is corresponding described
First contact electrical connection on testing clamp, the voltage tester line and second contact on the corresponding testing clamp
Electrical connection.
Compared with the prior art, the advantages of the utility model are:
Testing clamp provided by the utility model can hold handle and the first strut when in use, and the first strut is equipped with
One end of first contact is rotated to the one end for being equipped with the second contact close to the second strut, so that the first contact and the second contact
It can extend into the annular fixing member of Mume flower contact, at this point, elastic structure can deformation occurs and generation one becomes to making first
Bar is equipped with one end of the first contact far from the elastic force of the second strut；First contact and the second contact are extend into Mume flower contact
In annular fixing member, release handle and the first strut, under the elastic force effect of elastic structure, the first strut is equipped with the first touching
One end of head can be rotated to the one end for being equipped with the second contact far from the second strut, thus, the first contact being oppositely arranged up and down
Several fingertips that just can be oppositely arranged up and down with Mume flower contact respectively with the second contact abut, so that circuit resistance tester
Testing current line and voltage tester line can be electrically connected with the fingertip of Mume flower contact, in order to test.
It should be noted that when testing clamp provided in this embodiment is clamped in Mume flower contact, in the work of elastic structure
Under, can all there be certain pressure between the first contact and fingertip and between the second contact and fingertip, and utilize this pressure
Power is clamped in the inside of Mume flower contact, will not crush fingertip, also be not easy spring of burning；And convenient for operation, when reducing power failure
Between, power transmission working efficiency is improved, is not easy to collapse out or fall off after clamping, reduce security risk.
Therefore, testing clamp provided in this embodiment, does not easily cause equipment damage, convenient for operation, improve work efficiency and
Security risk is smaller.
The utility model additionally provides a kind of central cabinet circuit breaker loop resistance test device comprising has above-mentioned test
Pincers, therefore have all advantages of above-mentioned testing clamp, equipment damage is not easily caused, is convenient for operation and security risk is smaller.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is positive structure diagram of the testing clamp provided by the embodiment of the utility model when idle；
Fig. 2 is that testing clamp provided by the embodiment of the utility model is entering rear and Mume flower contact opposite position in Mume flower contact
Set structural schematic diagram；
Fig. 3 is that when testing clamp provided by the embodiment of the utility model the clamps Mume flower contact and relative position of Mume flower contact is tied
Structure schematic diagram.
Icon: 1- support rod；2- handle；The first strut of 3-；The first insulating part of 4-；The first articulated shaft of 5-；6-
Two struts；The second insulating part of 7-；The second articulated shaft of 8-；The first contact of 9-；The second contact of 10-；11- shaft；12- elasticity
Structural member；13- limit card block；14- fingertip；15- annular fixing member；16- testing current line；17- voltage tester line.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term " on ", "lower"
To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitations of the present invention.In addition, term " first ", " second " are used for description purposes only, and should not be understood as indicating
Or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in utility model.
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
Referring to figures 1-3, a kind of testing clamp, including support rod 1, handle 2, the first strut 3, are present embodiments provided
Two struts 6, the first contact 9 and the second contact 10.
Wherein, the handle 2 is fixed on the support rod 1, is connected between first strut 3 and the support rod 1
There is shaft 11, the shaft 11 is arranged perpendicular to the support rod 1；Bullet is connected between the handle 2 and first strut 3
Property structural member 12, first contact 9 are mounted on one end of first strut 3, and the elastic structure 12 and described
One contact 9 is located at the two sides of the support rod 1；Second strut 6 is mounted on the support rod 1, and described second
Contact 10 is mounted on one end of second strut 6 and is oppositely arranged with about 9 first contact.
First contact 9 and second contact 10 with the fingertip 14 of Mume flower contact for abutting, and first touching
First 9 and second contact 10 be respectively used to be electrically connected with the testing current line 16 of circuit resistance tester and voltage tester line 17
It connects.
Testing clamp provided in this embodiment can hold handle 2 and the first strut 3 when in use, and the first strut 3 is installed
There is one end of the first contact 9 to rotate to the one end for being equipped with the second contact 10 close to the second strut 6, so that 9 He of the first contact
Second contact 10 can be extend into the annular fixing member 15 of Mume flower contact, at this point, elastic structure 12 can deformation occurs and generates
One elastic force of the one end far from the second strut 6 for making the first strut 3 be equipped with the first contact 9 that becomes；By the first contact 9 and the second touching
First 10 extend into the annular fixing member 15 of Mume flower contact, release handle 2 and the first strut 3, in the elastic force of elastic structure 12
Under effect, one end that the first strut 3 is equipped with the first contact 9 can be to the one end for being equipped with the second contact 10 far from the second strut 6
Rotation, thus, the first contact 9 and the second contact 10 being oppositely arranged up and down just can be oppositely arranged with Mume flower contact up and down respectively
Several fingertips 14 abut so that the testing current line 16 and voltage tester line 17 of circuit resistance tester can be touched with plum blossom
The fingertip 14 of head is electrically connected, in order to test.
It should be noted that when testing clamp provided in this embodiment is clamped in Mume flower contact, in elastic structure 12
Under effect, can all there are certain pressure, and benefit between the first contact 9 and fingertip 14 and between the second contact 10 and fingertip 14
It is clamped in the inside of Mume flower contact with this pressure, fingertip 14 will not be crushed, be also not easy spring of burning；And convenient for operation, subtract
Power off time is lacked, has improved power transmission working efficiency, has been not easy to collapse out or fall off after clamping, reduce security risk.
Therefore, testing clamp provided in this embodiment, does not easily cause equipment damage, convenient for operation, improve work efficiency and
Security risk is smaller.
The specific structure and technical effect of technical solution in relation to the present embodiment are as follows:
First strut 3 is located between handle 2 and the second strut 6, thus, when in use, tight handle 2 can be held with one
With the first strut 3, elasticity of compression structural member 12 can make the first strut 3 to be equipped with one end of the first contact 9 to close to second
Strut 6 is equipped with one end rotation of the second contact 10, increases the convenience of operation.
Specifically, by insulation set between the first contact 9 and the first strut 3, and by the second contact 10 and the second strut 6 it
Between insulation set, to prevent the first contact 9 and the second contact 10 by the electrical conduction on Mume flower contact to the first strut 3 and second
On bar 6, to guarantee the accuracy and safety of test.
Preferably, first insulating part 4 can be installed in one end of the first strut 3, the first contact 9 is mounted on the first insulating part
On 4, to just realize the insulation between the first contact 9 and the first strut 3；The second insulation of installation in one end of the second strut 6
Second contact 10 is mounted on the second insulating part 7 by part 7, thus, it just realizes between the second contact 10 and the second strut 6
Insulation.
Further, it is hinged can will to pass through the first articulated shaft 5 between the first contact 9 and the first insulating part 4, and second will be touched
First 10 and second hinged by the second articulated shaft 8 between insulating part 7, and by the first articulated shaft 5 and the second articulated shaft 8 be set as with
Shaft 11 is parallel, thus, when the first contact 9 and the second contact 10 are abutted with the feeler of Mume flower contact, can according to itself and
Relative position between fingertip 14 automatically adjusts angle, to improve connecing between the first contact 9 and the second contact 10 and fingertip 14
Contacting surface product improves the validity that testing clamp is connect with Mume flower contact.
Specifically, the first articulated shaft 5 can be fixedly connected with the first contact 9, and by the first articulated shaft 5 and the first insulating part
4 rotation connections；Meanwhile the second articulated shaft 8 being fixedly connected with the second contact 10, and by the second articulated shaft 8 and the second insulating part 7
Rotation connection.
Preferably, the face that the first contact 9 and the second contact 10 are contacted with fingertip 14 can be disposed as to the cambered surface of protrusion, and
The arragement direction that cambered surface is set as the fingertip 14 along Mume flower contact is extended, so that the first contact 9 and the second contact 10 can
It contacts with more fingertip, to further increase the contact area between the first contact 9 and the second contact 10 and fingertip 14, mentions
The validity that high testing clamp is connect with Mume flower contact.
Specifically, prism structure can be arranged in support rod 1, and opened up on the second strut 6 matched with support rod 1 it is logical
Through-hole on second strut 6 is slidably matched by hole with support rod 1, can be by the second strut when needing to be clamped in Mume flower contact
6 slide along support rod 1 to the direction close to the first strut 3, to shorten the first strut 3 at a distance from the second strut 6, in the first touching
First 9 and second contact 10 enter Mume flower contact in after, the relative position of the first strut 3 and handle 2 can be kept constant, by second
Bar 6 is slided along support rod 1 to the direction far from the first strut 3, to increase the distance between the first strut 3 and the second strut 6, directly
Until the first contact 9 and the second contact 10 are against on corresponding fingertip 14, release handle 2 and the first strut 3, in elasticity
Under the action of structural member 12, the through-hole on the second strut 6 just can form a torsion between the support rod 1 of prism-shaped, thus,
So that the second strut 6 is self-locking by torsion realization, it will not be slided again along support rod 1, be not necessarily to other supplementary structures, just dexterously
Realize being fixed to each other between the second strut 6 and support rod 1, ensure that connected between testing clamp and Mume flower contact it is secured
Property.
It should be noted that because the second strut 6 can be slided up and down with respect to support rod 1, therefore can the first strut of flexible modulation 3
The distance between second strut 6, thus, testing clamp provided in this embodiment and the plum blossom of different sizes are touched
Head matches, and enhances adaptability.
Preferably, quadrangular is set by support rod 1, and the second strut 6 is each perpendicular to one of side of support rod 1
Face, so that the two side walls of through-hole when the second strut 6 is self-locking on second strut 6 perpendicular to 6 length direction of the second strut
Edge can be compressed with support rod 1, improve self-locking fastness.
Limit card block 13 is set on support rod 1, the second strut 6 is arranged between the first strut 3 and limit card block 13,
Second strut 6 to be limited on support rod 1 using limit card block 13, prevent the second strut 6 from slipping away support rod 1.
Preferably, the first contact 9 can be detachably connected with testing current line 16, and by the second contact 10 and voltage tester
Line 17 is detachably connected, in order to replace testing clamp or replacement circuit resistance tester when, by the first contact 9 and testing current
Line 16 is separated, and the second contact 10 is separated with voltage tester line 17.
Particularly, testing current line 16 can be used on the first contact 9, and by voltage tester line 17 using bolt presses
Bolt presses are installed and are separated all easily on the second contact 10.
Preferably, spring can be set by elastic structure 12.
Correspondingly, the present embodiment additionally provides a kind of central cabinet circuit breaker loop resistance test device referring to Fig. 1, packet
Above-mentioned testing clamp (specific structure of the testing clamp no longer repeats one by one) is included, also while including circuit resistance tester；Described time
Two groups of p-wires are provided on the resistance meter of road, p-wire described in two groups is corresponding with two testing clamps respectively, every group of institute
State p-wire and include testing current line 16 and voltage tester line 17, the testing current line 16 on the corresponding testing clamp
First contact 9 electrical connection, the voltage tester line 17 and second contact 10 on the corresponding testing clamp are electric
Connection.
In conclusion the utility model embodiment discloses a kind of testing clamp and central cabinet circuit breaker loop resistance test dress
It sets, which overcome many technological deficiencies of the testing clamp in traditional central cabinet circuit breaker loop resistance test device.This is practical
The testing clamp and central cabinet circuit breaker loop resistance test device that new embodiment provides, do not easily cause equipment damage, convenient for behaviour
Make, improves work efficiency and security risk is smaller.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is practical new in this
Within the scope of type and form different embodiments.For example, in claims above, embodiment claimed
It is one of any can in any combination mode come using.The information disclosed in the background technology section is intended only to deepen
Understanding to the general background technology of the utility model, and be not construed as recognizing or implying in any form that the information is constituted
The prior art known to those skilled in the art.
Claims (10)
1. a kind of testing clamp, which is characterized in that including support rod, handle, the first strut, the second strut, the first contact and second
Contact；
Wherein, the handle is fixed on the support rod, is connected with shaft between first strut and the support rod, institute
Shaft is stated to be arranged perpendicular to the support rod；It is connected with elastic structure between the handle and first strut, described
One contact is mounted on one end of first strut, and the elastic structure and first contact are located at the support
The two sides of bar；Second strut is mounted on the support rod, and second contact is mounted on the one of second strut
It holds and is oppositely arranged up and down with first contact；
First contact and second contact with the fingertip of Mume flower contact for abutting, and first contact and described the
Two contacts are respectively used to be electrically connected with the testing current line of circuit resistance tester and voltage tester line.
2. testing clamp according to claim 1, which is characterized in that first strut is located at the handle and described second
Between strut, and first contact is mounted on the upside of first strut, and second contact is mounted on described second
The downside of bar.
3. testing clamp according to claim 1 or 2, which is characterized in that between first contact and first strut
Insulation set, insulation set between second contact and second strut.
4. testing clamp according to claim 3, which is characterized in that one end of first strut is equipped with the first insulation
Part, first contact are mounted on first insulating part；One end of second strut is equipped with the second insulating part, described
Second contact is mounted on second insulating part.
5. testing clamp according to claim 4, which is characterized in that lead between first contact and first insulating part
It is hinged to cross the first articulated shaft, it is hinged by the second articulated shaft between second contact and second insulating part, described first
Articulated shaft and second articulated shaft are arranged in parallel with the shaft.
6. testing clamp according to claim 5, which is characterized in that first contact and second contact connect with fingertip
The face of touching is the cambered surface of protrusion, and the arragement direction of cambered surface fingertip along Mume flower contact extends.
7. testing clamp according to claim 1 or 2, which is characterized in that the support rod be prism structure, described second
The through-hole matched with the support rod is offered on bar, the through-hole on second strut is slidably matched with the support rod.
8. testing clamp according to claim 1 or 2, which is characterized in that limit card block is provided on the support rod, it is described
Second strut is between first strut and the limit card block, and the limit card block is used to limit second strut
System is on the support rod.
9. testing clamp according to claim 1 or 2, which is characterized in that first contact and the testing current line can
Dismantling connection, second contact are detachably connected with the voltage tester line.
10. a kind of central cabinet circuit breaker loop resistance test device, which is characterized in that any including two such as claim 1-9
Testing clamp described in, further includes circuit resistance tester；
Be provided with two groups of p-wires on the circuit resistance tester, p-wire described in two groups respectively with two testing clamps pair
It answers, p-wire described in every group includes testing current line and voltage tester line, the testing current line and the corresponding test
First contact electrical connection on pincers, the voltage tester line are electrically connected with second contact on the corresponding testing clamp
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920029379.7U CN209590094U (en) | 2019-01-08 | 2019-01-08 | Testing clamp and central cabinet circuit breaker loop resistance test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920029379.7U CN209590094U (en) | 2019-01-08 | 2019-01-08 | Testing clamp and central cabinet circuit breaker loop resistance test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209590094U true CN209590094U (en) | 2019-11-05 |
Family
ID=68350828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920029379.7U Expired - Fee Related CN209590094U (en) | 2019-01-08 | 2019-01-08 | Testing clamp and central cabinet circuit breaker loop resistance test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209590094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444486A (en) * | 2019-01-08 | 2019-03-08 | 国网山东省电力公司泰安供电公司 | Testing clamp and central cabinet circuit breaker loop resistance test device |
| CN112180249A (en) * | 2020-09-25 | 2021-01-05 | 广东电网有限责任公司 | Switch loop resistance test platform |
-
2019
- 2019-01-08 CN CN201920029379.7U patent/CN209590094U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444486A (en) * | 2019-01-08 | 2019-03-08 | 国网山东省电力公司泰安供电公司 | Testing clamp and central cabinet circuit breaker loop resistance test device |
| CN109444486B (en) * | 2019-01-08 | 2024-05-24 | 国网山东省电力公司泰安供电公司 | Test clamp and circuit breaker loop resistance test device of centrally installed switchgear |
| CN112180249A (en) * | 2020-09-25 | 2021-01-05 | 广东电网有限责任公司 | Switch loop resistance test platform |
| CN112180249B (en) * | 2020-09-25 | 2022-04-12 | 广东电网有限责任公司 | Switch loop resistance test platform |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191105 Termination date: 20200108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |