CN109560428A - A kind of anti-open circuit of current transformer and the pre-fabricated electric cables of the anti-short circuit of voltage transformer - Google Patents
A kind of anti-open circuit of current transformer and the pre-fabricated electric cables of the anti-short circuit of voltage transformer Download PDFInfo
- Publication number
- CN109560428A CN109560428A CN201811122669.2A CN201811122669A CN109560428A CN 109560428 A CN109560428 A CN 109560428A CN 201811122669 A CN201811122669 A CN 201811122669A CN 109560428 A CN109560428 A CN 109560428A
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- Prior art keywords
- plug needle
- male plug
- open circuit
- needle
- female
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
- H01R13/7034—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity the terminals being in direct electric contact separated by double sided connecting element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
Landscapes
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
本发明公开了一种电流互感器防开路及电压互感器防短路的预制电缆，包括防开路航空插座和防开路航空插头，且所述防开路航空插座包括公插针，公插针的外侧套设有绝缘套，绝缘套的外侧套设有导电滑块，所述防开路航空插头包括母插针，母插针的一端设有母插针压接孔，且所述公插针可插入于所述母插针内部且电性连接，且所述公插针和母插针均设有若干根，且一一对应，且若干根公插针可选择性的电性连接。预制生产完成后结构灵活，可以根据需要任意的增减；产品结构不统一，不同规格可以互换通用。
The invention discloses a prefabricated cable for preventing open circuit of current transformer and preventing short circuit of voltage transformer. There is an insulating sleeve, the outer side of the insulating sleeve is provided with a conductive slider, the anti-opening aviation plug includes a female pin, one end of the female pin is provided with a female pin crimping hole, and the male pin can be inserted into The female pins are internally and electrically connected, and the male pins and the female pins are provided with a plurality of pins, which are in one-to-one correspondence, and the plurality of male pins can be selectively electrically connected. After the prefabricated production is completed, the structure is flexible and can be increased or decreased arbitrarily according to the needs; the product structure is not uniform, and different specifications can be interchanged.
Description
Technical field
The present invention relates to field of cables, the anti-open circuit of more precisely a kind of current transformer and the anti-short circuit of voltage transformer
Pre-fabricated electric cables.
Background technique
Transformer station control cable and power cable dosage more and more use conventional pre-fabricated electric cables, gradually pre- using factory
System production, greatly reduces site operation difficulty, shortens construction period；With the raising of production technology, current transformer two
Minor loop also uses pre-fabricated electric cables, but versatility is not strong, 2 cores, 4 cores, and 6 core sizes are different, and function is different, can not be general.
The prior art has the disadvantage in that
(1), Structured cured after the completion of producing, function can not be increased and decreased；
(2), product structure disunity, different size be not general.
Summary of the invention
The object of the present invention is to provide a kind of current transformer it is anti-open circuit and the anti-short circuit of voltage transformer pre-fabricated electric cables,
It is not strong to can solve versatility in the prior art, the shortcomings that having a single function.
The invention adopts the following technical scheme:
A kind of anti-open circuit of current transformer and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, including anti-open circuit aviation socket with
Anti- open circuit aviation plug, and the anti-open circuit aviation socket includes male plug needle, the outer sheath of male plug needle is equipped with insulation sleeve, insulation sleeve
Outer sheath be equipped with conductive slider, the anti-open circuit aviation plug includes female plug needle, and one end of female plug needle is equipped with the crimping of female plug needle
Hole, and the male plug needle is inserted into inside the female plug needle and is electrically connected, and if the male plug needle and female plug needle be equipped with
Dry root, and correspond, and several male plug needles are optionally electrically connected.
The male plug needle includes male plug needle main body, pedestal, male plug needle fixed part, male plug needle cable crimping hole, the pedestal
Two sides be separately connected male plug needle main body and male plug needle fixed part, the male plug needle fixed part is crimped equipped with male plug needle cable
Hole, male plug needle main body, pedestal, male plug needle fixed part one are conductive.
The male plug needle is equipped with the six roots of sensation, and the male plug needle is fixed in male plug needle fixing card.
The conductive slider passes through the outside that the pin holes which is provided with are sheathed on the male plug needle, and the conductive slider
It can be slided along the male plug needle, one end of the conductive slider is fixed with spring, and the other end of the spring is fixed on public affairs
In contact pin fixing card.
The conductive slider is limited by the pedestal, and the conductive slider and the pedestal are in electrical contact.
The female plug needle includes female plug needle main body, female plug needle fixed part, and the female plug needle fixed part is equipped with female plug needle pressure
Connect hole.
The female plug needle is equipped with the six roots of sensation, and the female plug needle is fixed in mother's contact pin fixing card.
Further include a support frame, and support frame as described above is fixed in female plug needle fixing card, and the bracket protrude from it is described
Female plug needle.
There are six contact pin fixation hole on the conductive slider is set.
Six contact pin fixation holes are in same conduction region；
Or, two neighboring in same conduction region and midfeather one is in nonconductive regions in six contact pin fixation holes
Contact pin fixation hole；
Or, in six contact pin fixation holes three in same conduction region and in, with one be in nonconductive regions contact pin
The setting of fixation hole interval；
Or, two neighboring in nonconductive regions and midfeather one is in nonconductive regions in six contact pin fixation holes
Contact pin fixation hole.
The invention has the advantages that flexible structure after the completion of production, can according to need arbitrary increase and decrease；Product structure is not united
One, different size can be interchanged general.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of the use state of Fig. 1.
Fig. 3 is the structural schematic diagram of anti-open circuit aviation socket.
Fig. 4 is the structural schematic diagram of anti-open circuit aviation plug.
Fig. 5 A, 5B, 5C, 5D are the diagrammatic cross-sections of the conductive slider in the present invention.
Fig. 6 is use figure of the invention.
Specific embodiment
The specific embodiment that present invention is further explained below:
As shown in Figure 1, the invention discloses a kind of anti-open circuit of current transformer and the prefabricated electricity of the anti-short circuit of voltage transformer
Cable, which is characterized in that including anti-open circuit aviation socket 10 and anti-open circuit aviation plug 20, and the anti-open circuit aviation socket 10 wraps
Male plug needle 5 is included, the outer sheath of male plug needle 5 is equipped with insulation sleeve 6, and the outer sheath of insulation sleeve 6 is equipped with conductive slider 3, the anti-open circuit
Aviation plug 20 includes female plug needle 8, and one end of female plug needle 8 is equipped with female plug needle and crimps hole 9, and the male plug needle 5 is inserted into institute
It states 6 inside of female plug needle and is electrically connected, and the male plug needle 5 and female plug needle 8 are equipped with several, and correspond, and several
Root male plug needle 5 is optionally electrically connected.
The male plug needle 5 crimps hole 4 including male plug needle main body 51, pedestal 52, male plug needle fixed part 53, male plug needle cable,
The two sides of the pedestal 52 are separately connected male plug needle main body 51 and male plug needle fixed part 53, and the male plug needle fixed part 53 is equipped with
Male plug needle cable crimps hole 4, and male plug needle main body 51, pedestal 52,53 one of male plug needle fixed part are conductive.The male plug needle 5 is equipped with
The six roots of sensation, and the male plug needle 5 is fixed in male plug needle fixing card 1.The conductive slider 3 passes through the pin holes which is provided with and is arranged
In the outside of the male plug needle, and the conductive slider 3 can be slided along the male plug needle 5, and one end of the conductive slider 3 is fixed
The other end equipped with spring 2, and the spring 2 is fixed in male plug needle fixing card 1.The conductive slider 3 passes through the pedestal
52 limits, and the conductive slider 3 and the pedestal 52 are in electrical contact.
The female plug needle 8 includes female plug needle main body 81, female plug needle fixed part 82, and the female plug needle fixed part 82 is equipped with mother
Contact pin crimps hole 9.The female plug needle 8 is equipped with the six roots of sensation, and the female plug needle 8 is fixed in mother's contact pin fixing card 7, including one
Support 83, and support frame as described above is fixed in female plug needle fixing card, and the bracket protrudes from the female plug needle, the male plug needle
When being inserted into inside female plug needle, support frame is abutted with conductive slider, to prevent conductive slider from abutting with pedestal, to be broken
Electricity.
As shown in Figure 1 and Figure 2, male plug needle is kept in contact with female plug needle when normal use, and female plug needle fixing card is sliding conduction
Block is pushed open, and all male plug needles, which disconnect, to be shorted, and male plug needle and female plug needle are formed into a loop；Other and so on.
During unpluging: before conductive slider completely attaches to male plug needle formation socket internal short-circuit, male plug needle and female plug needle
It is closely kept in contact, conductive slider completely attaches to male plug needle and formed after socket internal short-circuit, and male plug needle separates again with female plug needle.
After unpluging completely, conductive slider is promoted, contacts and is compressed, all male plug needle cables to male plug needle under the action of the spring
Crimp hole dead short；
Different according to conductive slider structure, function is also different, by replacing the conductive slider of different structure, realizes different
Function.As shown in Figure 5A, the conductive slider center is equipped with an axis hole 31, and conduction region 32 is set on conductive slider, conduction region 32
On contact pin fixation hole set there are six, six contact pin fixation holes are in same conduction region；As shown in Figure 5 B, described conductive sliding
Block center is equipped with an axis hole 31, and conduction region 32 is set on conductive slider, two neighboring in same in six contact pin fixation holes
The contact pin fixation hole 33 and midfeather one of one conduction region are in the contact pin fixation hole 34 of nonconductive regions；As shown in Figure 5 C, described
Conductive slider center is equipped with an axis hole 31, and conduction region 32 is set on conductive slider, and three are in six contact pin fixation holes
Same conduction region contact pin fixation hole 33 and a contact pin fixation hole 34 in nonconductive regions are spaced and are arranged；As shown in Figure 5 D, described
Conductive slider center is equipped with an axis hole 31, and conduction region 32 is set on conductive slider, two neighboring in six contact pin fixation holes
In nonconductive regions contact pin fixation hole 33 and midfeather one is in the contact pin fixation hole 34 of nonconductive regions.Conduction in the present invention
Sliding block replaceable function；Using reversible disassembly and assembly structure, encapsulation is simple, and replacement conductive slider is convenient；It, can using 6 hole conductive sliders
Realize the anti-open-ciruit jack function of 6 cores；Using 4 hole conductive sliders, it can be achieved that the anti-open circuit of 4 cores and the androgynous function of socket of the anti-short circuit of 2 cores；
Using 3 hole conductive sliders, it can be achieved that the anti-open circuit of 3 cores and the androgynous function of socket of the anti-short circuit of 3 cores；It, can be real using 2 hole conductive sliders
The now anti-open circuit of 2 cores and the androgynous function of socket of the anti-short circuit of 4 cores.
As shown in fig. 6, anti-open circuit aviation socket 10 is fixed on jack mounting plates 80, anti-open circuit aviation socket 10 is opened with anti-
Road aviation plug 20 is respectively the thimble aviation plug 90 containing insulation and the thimble aviation socket 70 containing insulation, anti-open circuit aviation socket 10
Pre-fabricated electric cables Gui Nei branch 30 is connected, length is directly connected to fill with 2-20m, using single strand wire from pre-fabricated electric cables socket
It sets, so as to avoid guide rail and connecting terminal, anti-open circuit aviation plug connecting cable main line 120 uses multicore multiply armouring
Flexible cable, length are subject to actual measurement, and cable main line 120 is equipped with shielding layer grounding line and connects equipotential terminal block 100 and armour
Layer ground connection terminal block 120 is filled, anti-open circuit aviation socket 10 and anti-20 two sides of open circuit aviation plug separately constitute prefabricated electricity
Cable socket end 60 and pre-fabricated electric cables main push-towing rope 130, pre-fabricated electric cables socket end 60 are furnished with branch wire, aviation socket, jack mounting plates,
Factory is preceding to complete all cabinet internal wirings, complete by aviation socket and the slotting aviation plug of pre-fabricated electric cables main push-towing rope after screen cabinet installation is in place
At cable connection, branch wire is respectively divided into the end the A side CT 40 and the end B protection side.It is inserted equipped with aviation at 130 both ends of pre-fabricated electric cables main push-towing rope
Head, armor ground line, shielding layer grounding line；Main push-towing rope length is subject to in-site measurement, and prefabricated completion before dispatching from the factory, scene has been laid
It is docked later with cabinet interpolation block, plug and play.
When normal use of the present invention: male plug needle is kept in contact with female plug needle, and female plug needle fixing card pushes conductive slider open, institute
There is male plug needle to disconnect to be shorted, male plug needle and female plug needle are formed into a loop；Other and so on.During unpluging: complete in conductive slider
Full connected male plug needle is formed before socket internal short-circuit, and male plug needle is closely kept in contact with female plug needle, and conductive slider completely attaches to public
Contact pin is formed after socket internal short-circuit, and male plug needle separates again with female plug needle.After unpluging completely, conductive slider under the action of the spring to
Male plug needle promotes, contacts and compress, and all male plug needle cables crimp hole dead short；By replacing conductive slider, realize different
Function；Which is using 6 hole conductive sliders, it can be achieved that the anti-open-ciruit jack function of 6 cores；Which uses 4 hole conductive sliders, can
Realize the anti-open circuit of 4 cores and the androgynous function of socket of the anti-short circuit of 2 cores；Which use 3 hole conductive sliders, it can be achieved that 3 cores it is anti-open circuit and
The androgynous function of socket of the anti-short circuit of 3 cores；Which uses 2 hole conductive sliders, it can be achieved that the anti-open circuit of 2 cores and the anti-short circuit of 4 cores are androgynous slotting
Seat function；Cable main push-towing rope ground line is made of batch production, and ground line is respectively welded；It is packaged again；Which uses factory
Change production shielding layer grounding line and armor ground line, using welding procedure, ground wire is more firm, not easily to fall off；Which is adopted
With multilayer insulation heat-shrink tube welded encapsulation point, keeps pad stronger and sealing performance and insulating properties are more preferable；Which cable
Encapsulation is crimped by part 6 with part 1, so that the tensile property of whole cable and sealing performance is greatly improved: which main push-towing rope both ends
Connector after have a cable number, cable is easy to distinguish, convenient for searching.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of anti-open circuit of current transformer and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, which is characterized in that including anti-open circuit
Aviation socket and anti-open circuit aviation plug, and the anti-open circuit aviation socket includes male plug needle, the outer sheath of male plug needle is equipped with exhausted
The outer sheath of edge set, insulation sleeve is equipped with conductive slider, and the anti-open circuit aviation plug includes female plug needle, and one end of female plug needle is equipped with
Female plug needle crimps hole, and the male plug needle is inserted into inside the female plug needle and is electrically connected, and the male plug needle and female plug
Needle is equipped with several, and corresponds, and several male plug needles are optionally electrically connected.
2. the anti-open circuit of current transformer according to claim 1 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
Be, the male plug needle include male plug needle main body, pedestal, male plug needle fixed part, male plug needle cable crimping hole, the two of the pedestal
Side is separately connected male plug needle main body and male plug needle fixed part, and the male plug needle fixed part is equipped with male plug needle cable and crimps hole, public
Contact pin main body, pedestal, male plug needle fixed part one are conductive.
3. the anti-open circuit of current transformer according to claim 2 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, the male plug needle is equipped with the six roots of sensation, and the male plug needle is fixed in male plug needle fixing card.
4. the anti-open circuit of current transformer according to claim 3 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, the conductive slider passes through the outside that the pin holes which is provided with are sheathed on the male plug needle, and the conductive slider can
It is slided along the male plug needle, one end of the conductive slider is fixed with spring, and the other end of the spring is fixed on male plug
In needle fixing card.
5. the anti-open circuit of current transformer according to claim 3 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, the conductive slider is limited by the pedestal, and the conductive slider and the pedestal are in electrical contact.
6. the anti-open circuit of current transformer according to claim 1 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, the female plug needle includes female plug needle main body, female plug needle fixed part, and the female plug needle fixed part is crimped equipped with female plug needle
Hole.
7. the anti-open circuit of current transformer according to claim 1 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, the female plug needle is equipped with the six roots of sensation, and the female plug needle is fixed in mother's contact pin fixing card.
8. the anti-open circuit of current transformer according to claim 7 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, further includes a support frame, and support frame as described above is fixed in female plug needle fixing card, and the bracket protrudes from the female plug
Needle.
9. the anti-open circuit of current transformer according to claim 4 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, there are six the contact pin fixation hole on the conductive slider is set.
10. the anti-open circuit of current transformer according to claim 9 and the pre-fabricated electric cables of the anti-short circuit of voltage transformer, feature
It is, six contact pin fixation holes are in same conduction region；
Or, two neighboring in same conduction region and midfeather one be in the slotting of nonconductive regions in six contact pin fixation holes
Needle fixation hole；
Or, in six contact pin fixation holes three in same conduction region and in, fixed with one in the contact pin of nonconductive regions
The setting of hole interval；
Or, two neighboring in nonconductive regions and midfeather one is in the contact pin of nonconductive regions in six contact pin fixation holes
Fixation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122669.2A CN109560428B (en) | 2018-09-26 | 2018-09-26 | Prefabricated cable for preventing open circuit of current transformer and preventing short circuit of voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811122669.2A CN109560428B (en) | 2018-09-26 | 2018-09-26 | Prefabricated cable for preventing open circuit of current transformer and preventing short circuit of voltage transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109560428A true CN109560428A (en) | 2019-04-02 |
| CN109560428B CN109560428B (en) | 2021-02-05 |
Family
ID=65864817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811122669.2A Active CN109560428B (en) | 2018-09-26 | 2018-09-26 | Prefabricated cable for preventing open circuit of current transformer and preventing short circuit of voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109560428B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205985599U (en) * | 2016-07-20 | 2017-02-22 | 上海华仪配电自动化有限公司 | Prevent cable of opening a way |
| CN207459290U (en) * | 2017-12-05 | 2018-06-05 | 乐清市临坤电器科技有限公司 | A kind of anti-open circuit aviation socket |
| CN207675921U (en) * | 2017-11-23 | 2018-07-31 | 上海珖铭光电科技有限公司 | A kind of self-sealing pre-fabricated electric cables with current transformer test function |
| CN208889899U (en) * | 2017-11-23 | 2019-05-21 | 国网新疆电力有限公司建设分公司 | A kind of anti-open ended system of secondary loop of mutual inductor and pre-fabricated electric cables |
-
2018
- 2018-09-26 CN CN201811122669.2A patent/CN109560428B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205985599U (en) * | 2016-07-20 | 2017-02-22 | 上海华仪配电自动化有限公司 | Prevent cable of opening a way |
| CN207675921U (en) * | 2017-11-23 | 2018-07-31 | 上海珖铭光电科技有限公司 | A kind of self-sealing pre-fabricated electric cables with current transformer test function |
| CN208889899U (en) * | 2017-11-23 | 2019-05-21 | 国网新疆电力有限公司建设分公司 | A kind of anti-open ended system of secondary loop of mutual inductor and pre-fabricated electric cables |
| CN207459290U (en) * | 2017-12-05 | 2018-06-05 | 乐清市临坤电器科技有限公司 | A kind of anti-open circuit aviation socket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109560428B (en) | 2021-02-05 |
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