CN107017041A - A kind of solid insulated busbar - Google Patents
A kind of solid insulated busbar Download PDFInfo
- Publication number
- CN107017041A CN107017041A CN201710229137.8A CN201710229137A CN107017041A CN 107017041 A CN107017041 A CN 107017041A CN 201710229137 A CN201710229137 A CN 201710229137A CN 107017041 A CN107017041 A CN 107017041A
- Authority
- CN
- China
- Prior art keywords
- power transmission
- transmission conductor
- solid insulated
- insulating layer
- insulated busbar
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0291—Disposition of insulation comprising two or more layers of insulation having different electrical properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
Landscapes
- Installation Of Bus-Bars (AREA)
- Insulating Bodies (AREA)
Abstract
The present invention relates to a kind of solid insulated busbar, including power transmission conductor and the insulating resin layer in outside, in addition to the elastic insulating layer being fixedly set on the power transmission conductor, the insulating resin layer is solidificated in the elastic insulating layer outer circumferential.It is fixed on using the elastic acting force of elastic insulating layer on power transmission conductor, then solidifies insulating resin on elastic rubber layer, conveniently realize that insulating resin layer is solidificated on power transmission conductor, can effectively ensure that the Forming Quality of solid insulated busbar.Moreover, elastic insulating layer can not only play fixed effect, it can also play deformation when power transmission conductor is longer and absorb power transmission conductor and expand with heat and contract with cold the ability of the expansion caused and contraction, the stress of whole solid insulated busbar can be effectively improved.
Description
Technical field
The present invention relates to a kind of solid insulated busbar.
Background technology
At present, the bus of common Cubicle Gas-Insulated Switchgear and gas isolated pipe bus, its structure is such as
Authorization Notice No. is the pipe of the Cubicle Gas-Insulated Switchgear provided in CN205543717U Chinese utility model
Road bus, pipeline bus includes being provided with conductor in outer tube, outer tube, and the two ends of outer tube set ring flange respectively, to be connected by flange
The mode connect realizes the connection between pipeline bus, and contact is set respectively at the two ends of conductor, with realize adjacent channel bus and
Pipeline bus is connected with corresponding product body to point.But this pipeline bus needs to be filled with SF into pipeline6, mixed gas etc.
Greenhouse gases are as insulating gas, and it is insulating gas using high pressure nitrogen, pressure-air also to have extremely indivedual engineerings.
There are some common problems in this pipeline bus for being filled with insulating gas：
1. because voltage class is high, the design of cylinder must is fulfilled for the requirement of low-voltage power container standard, and seldom can be using shaping
Tubing is replaced, it is necessary to using the special cylinder for welding or casting.Its main cause is, gas-insulated metal-enclosed structure is cut
Face diameter, voltage class rise can become increasingly thicker, to ensure that dielectric level is not reduced therewith.And it is filled with insulation for this
The low-voltage power container of gas, its design level and manufacturing process also have higher technical threshold.
2. the bus of Cubicle Gas-Insulated Switchgear and gas isolated pipe bus, are being filled with insulating properties gas
When, the inflationtime that it is consumed is extremely long, and has rigors to assembly environment, it is necessary to set special docking at the construction field (site)
Room is assembled, because the air chamber in gas-insulated metal-enclosed structure has high requirement to cleanliness factor.
Typically assemble and inflation process is：The Butt Assembling room that job site is built temporarily out of doors, to ensure rendezvous method
Blue cleanliness factor, is completed after air chamber docking.First air chamber is evacuated, the SF of authorized pressure is re-filled with6Deng insulating gas.Due to
In power station job site, the air chamber of Cubicle Gas-Insulated Switchgear and gas isolated pipe bus is more, and is required for
Many Butt Assembling rooms are built, in order to save the engineering time, workman also needs to prepare many set chargers, and needs often to patrol
Depending on air gauge, to ensure inflatable safety, its labor intensity is very big.Even if so, building Butt Assembling room, assemble bus, take out true
The time of several days is taken in empty, inflation, is also normal phenomenon.
3. in order to improve charging efficiency, manufactory can Cubicle Gas-Insulated Switchgear bus and gas-insulated
Multiple gas-charging connections are designed on pipeline bus, but gas-charging connection is more, there is also leakage problem.
4. floor space is big, due to the bus and pair of gas isolated pipe bus of Cubicle Gas-Insulated Switchgear
Acting flange diameter and barrel diameter gap are simultaneously little, so the designer of design power station layout, it is impossible to by by three-phase bus
Flange interface dislocation arrangement, to realize the intention for reducing floor space.
To overcome the problem of above-mentioned pipeline bus is present, at present, a kind of solid insulated busbar, such as Authorization Notice No. are developed
For the totally-enclosed all insulation resin forming bus disclosed in CN202454325U Chinese utility model patent, it includes being located at
Resin insulating barrier is set outside the metallic conductor at center, metallic conductor.Replace sulfur hexafluoride of the overwhelming majority etc. using insulating resin
Greenhouse insulating gas, on the premise of bus insulating property is ensured, can reduce the air chamber for needing to inflate, reduce inflationtime, most
Limits save the engineering time.But, this solid insulated busbar is not easy to when making there is also problem, i.e. insulating resin
Cast on smooth power transmission conductor, easily deflection occur after the completion of casting, once there are the feelings of uneven thickness in some places
During condition, not only waste of materials, also affects the integral insulation performance of bus, it is impossible to ensure the shaping matter of solid insulated busbar
Amount.
The content of the invention
It is an object of the invention to provide a kind of solid insulated busbar, it is not easy admittedly with solving insulating resin in the prior art
Change the technical problem on smooth power transmission conductor.
To achieve the above object, the technical scheme of solid insulated busbar provided by the present invention is：A kind of solid insulation is female
Line, including power transmission conductor and the insulating resin layer in outside, in addition to the elastic insulating layer being fixedly set on the power transmission conductor,
The insulating resin layer is solidificated in the elastic insulating layer outer circumferential.
The layer wall of the elastic insulating layer is provided with hollow structure.
The hollow structure is axially extends to the through hole of the axial other end from axial one end of elastic insulating layer, and this leads to
Hole has multiple along elastic insulating layer is circumferentially distributed.
The medial surface towards power transmission conductor of the elastic insulating layer is provided with multiple groove structures.
The multiple groove structure is distributed along the axially extending of elastic insulating layer and along elastic insulating layer axially spaced-apart.
The elastic insulating layer is electro-insulating rubber layer.
At least one end in the axial direction of the power transmission conductor is provided with expanding structure.
The expanding structure is the conical section along the direction radial dimension increase towards power transmission conductor axial end portion.
The axial two ends of the power transmission conductor are respectively equipped with outside the expanding structure, the insulating resin layer and are set with outer barrel
Body, outer cylinder body includes the connector drum and middle protection cylinder at two ends.
The protection cylinder includes the protection cushion of inner side and the protection sheath in outside.
The beneficial effects of the invention are as follows：On solid insulated busbar provided by the present invention, the elasticity of elastic insulating layer is utilized
Active force is fixed on power transmission conductor, then solidifies insulating resin on elastic rubber layer, conveniently realizes that insulating resin layer solidifies
On power transmission conductor, the Forming Quality of solid insulated busbar can effectively ensure that.Moreover, elastic insulating layer can not only play fixed
Effect, can also play deformation and absorbs power transmission conductor and expand with heat and contract with cold the ability of the expansion caused and contraction when power transmission conductor is longer,
The stress of whole solid insulated busbar can be effectively improved.
Further, the layer wall of elastic insulating layer is hollow structure, can so improve the elastic performance of elastic insulating layer, together
When, convenient transmission of electricity problem radiating improves the overall performance of solid insulated busbar.
Further, the axial direction of power transmission conductor is provided with expanding structure, and expanding structure can be played to insulating resin layer axial direction
Spacing effect, improves the engaging force between insulating resin layer and power transmission conductor.
Further, outer cylinder body is set with outside insulating resin layer, outer cylinder body includes the connector drum at two ends and preventing for centre
Casing body, effective protection to insulating resin layer is provided by protection cylinder, prevents from occurring in transportation colliding with, asking of scratching
Topic.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment 1 of solid insulated busbar provided by the present invention；
Fig. 2 is sectional drawing at A-A in Fig. 1；
Fig. 3 is the structural representation of the embodiment 2 of solid insulated busbar provided by the present invention；
Fig. 4 is sectional drawing at B-B in Fig. 3；
Fig. 5 is the structural representation of the embodiment 3 of solid insulated busbar provided by the present invention；
Fig. 6 is sectional drawing at C-C in Fig. 5.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figure 1 and Figure 2, the solid insulated busbar in the embodiment includes the power transmission conductor 2 at center and the insulating resin in outside
Layer 4, is not easy in the problem of being solidificated on smooth power transmission conductor 2 of casting, the present embodiment to solve insulating resin layer 4, defeated
Elastic insulating layer 3 is set with electric conductor 2, the elastic insulating layer 3 is specially electro-insulating rubber layer, utilizes the bullet of elastic insulating layer 3
Property active force be fixed on power transmission conductor 2, then on elastic rubber layer 3 solidify insulating resin.
It should be noted that elastic insulating layer 3 can not only play fixed effect, it can also be risen when power transmission conductor 2 is longer
Expanded with heat and contract with cold the ability of the expansion caused and contraction to power transmission conductor is absorbed.Elastic insulating layer is designed to hollow-core construction, this implementation
In example, the layer wall of elastic insulating layer 3 is designed to hollow structure, hollow structure herein is specially circumferentially to divide along elastic insulating layer
Multiple through holes 30 of cloth, each through hole 30 extends to the axial other end from one section of the axial direction of elastic insulating layer, and these through holes can
Good radiating effect is played, moreover, the elastic performance of elastic insulating layer can be effectively improved, the elasticity for improving elastic insulating layer is consolidated
Capability.
In addition, in the present embodiment, the two ends in the axial direction of power transmission conductor 2 are respectively equipped with expanding structure 21, expansion herein
Gauge structure 21 is the conical section gradually increased along the direction radial dimension towards power transmission conductor axial end portion.Need explanation
It is that the direction towards power transmission conductor axial end portion herein is referred to for per one end, is respectively facing the side of respective end
To so, may be such that expanding structure that two ends are set respectively is upwardly formed in the axle of power transmission conductor 2 spacing, with to outside
The progress of insulating resin layer 4 clamp is spacing, can effectively improve the secure engagement power of insulating resin layer and power transmission conductor.
The two ends of power transmission conductor 2 are additionally, since for expanding structure 21, accordingly, the end of elastic insulating layer 3 forms hoop defeated
Flaring structure 31 outside the external expanding structure of conductance, meanwhile, to ensure insulation effect, the corresponding axial two ends of insulating resin layer
Thickness can not be thinner than the thickness in centre position, the enlarging of the insulating resin layer formation at the expanding structure 21 of correspondence power transmission conductor
Structural sections 41.
For insulating resin layer, it is contemplated that technique and corresponding insulating properties, insulating resin layer 4 is in power transmission conductor axle
Upwards including two ends flaring structure section 41 and positioned at two flaring structures section 41 between isometrical section 42.Due to insulating resin layer 4
Insulating properties preferably, isometrical section 42 of radial dimension is programmable smaller, so can relatively reduced whole isolated bus footpath
To size.
In fact, to realize being fixedly connected for adjacent solid insulation bus and solid insulated busbar and corresponding port, exhausted
The two ends of edge resin bed 4 are respectively equipped with connector drum 1, the flaring structure of correspondence insulating resin layer, and connector drum 1 is corresponding end
Portion's contracting larynx cylinder, both ends contracting larynx cylinder has the contracting being gradually reduced towards the direction size on the inside of both ends contracting larynx cylinder respectively
Larynx section, so that end contracting larynx cylinder is corresponding with the expanding structure of insulating resin layer.
The solid insulated busbar that the present embodiment is provided, is ensured the insulating properties of whole bus by insulating resin layer, moreover,
The expanding structure set using elastic insulating layer and insulated electric conductor two ends, it is ensured that the secure engagement of insulating resin layer and insulated electric conductor
Power, it is ensured that the Forming Quality of whole solid insulated busbar.
It should be noted that due to insulating resin layer and the self-strength of power transmission conductor, the strong of bus can be ensured completely
Degree, so, the cylinder of protectiveness can be not provided between both ends contracting larynx cylinder, production work can be so reduced to greatest extent
When, it can also reduce manufacturing process difficulty.
Embodiment 2：
As shown in Figure 3 and Figure 4, the something in common of the structure of the solid insulated busbar in the present embodiment and embodiment 1 is：By interior
Power transmission conductor 2, elastic insulating layer 3 and the insulating resin layer 4 outwards once arranged, are essentially consisted in the difference of embodiment 1：
Protection cylinder body 52 is provided with outside isometrical section 42 of insulating resin layer 4, the protection cylinder 52 and the two ends as connector drum 51
Contracting larynx cylinder in portion's is joined together to form the outer cylinder body being sleeved on outside insulating resin layer, and middle protection cylinder 52 is sleeved on absolutely
On isometrical section 42 of edge resin bed, because isometrical section of size is relatively small, so, protection cylinder 52 can directly use cast
Material, it is not necessary to specially weld large-sized cylinder.
Embodiment 3：
As shown in Figure 5 and Figure 6, the something in common of the structure of the solid insulated busbar in the present embodiment and embodiment 1 is：By interior
Power transmission conductor 2, elastic insulating layer 3 and the insulating resin layer 4 outwards once arranged, are respectively equipped with the two ends of insulating resin layer 4
Connector drum 1, is essentially consisted in the difference of embodiment 2：The protection cushion 7 of protection cylinder including inner side herein and outer
The protection sheath 8 of side, protection cushion 7 is wrapped in isometrical section of insulating resin layer 4, in fact, insulating resin layer 4 and transmission of electricity are led
The self-strength of body 2 is enough to ensure that bus intensity, this protection cushion and protection sheath mainly for prevent transport, install
During occur colliding with scuffing the problem of.
In fact, in above-mentioned 3 embodiments, the axial two ends of power transmission conductor are respectively provided with expanding structure, this knot
Structure is suitably applied the shorter isolated bus of length, such as less than 8 meters.When isolated bus length is longer, it is contemplated that insulating resin
The expansion rate of layer is different from the expansion rate of power transmission conductor, defeated to prevent from rupturing in power transmission conductor adstante febre insulating resin layer
Electric conductor can set expanding structure at one end, and the other end is not provided with expanding structure, also two ends can be made to be not provided with expanding structure.
In above-mentioned 3 embodiments, elastic insulating layer is provided with and axially extended from axial one end of elastic insulating layer to axle
To the through hole of the other end, the through hole is circle.In fact, in other embodiments, through hole is alternatively other structures.In addition,
In other embodiment, multiple groove structures, multiple ditches can be also set on the medial surface towards power transmission conductor of elastic insulating layer
Slot structure is distributed along the axially extending of elastic insulating layer and along elastic insulating layer axially spaced-apart.
In above-mentioned 3 embodiments, provided with elastic insulating layer to facilitate setting insulating resin layer on power transmission conductor, moreover,
The two ends of power transmission conductor are additionally provided with expanding structure to realize the axially position to insulating resin layer.In other embodiments, may be used
Elastic insulating layer is only set outside power transmission conductor, to facilitate casting insulation resin.
Claims (10)
1. a kind of solid insulated busbar, including power transmission conductor and the insulating resin layer in outside, it is characterised in that：Also include fixed cover
Elastic insulating layer on the power transmission conductor, the insulating resin layer is solidificated in the elastic insulating layer outer circumferential.
2. solid insulated busbar according to claim 1, it is characterised in that：During the layer wall of the elastic insulating layer is provided with
Hollow structure.
3. solid insulated busbar according to claim 2, it is characterised in that：The hollow structure is from elastic insulating layer
Axial one end is axially extended to the through hole of the axial other end, and the through hole has multiple along elastic insulating layer is circumferentially distributed.
4. solid insulated busbar according to claim 2, it is characterised in that：The hollow structure is the elastic insulating layer
Multiple groove structures for being provided with of the medial surface towards power transmission conductor.
5. solid insulated busbar according to claim 4, it is characterised in that：The multiple groove structure is along elastic insulated
Layer it is axially extending and along elastic insulating layer axially spaced-apart be distributed.
6. solid insulated busbar according to any one of claim 1 to 5, it is characterised in that：The elastic insulating layer is
Electro-insulating rubber layer.
7. solid insulated busbar according to any one of claim 1 to 5, it is characterised in that：The axle of the power transmission conductor
Upward at least one end is provided with expanding structure.
8. solid insulated busbar according to claim 7, it is characterised in that：The expanding structure is to be led along towards transmission of electricity
The conical section of the direction radial dimension increase of body axial end portion.
9. solid insulated busbar according to claim 7, it is characterised in that：The axial two ends of the power transmission conductor are set respectively
Have and outer cylinder body is set with outside the expanding structure, the insulating resin layer, outer cylinder body includes connector drum and the centre at two ends
Protect cylinder.
10. solid insulated busbar according to claim 9, it is characterised in that：The protection cylinder includes the protection of inner side
Cushion and the protection sheath in outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229137.8A CN107017041B (en) | 2017-04-10 | 2017-04-10 | A kind of solid insulated busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229137.8A CN107017041B (en) | 2017-04-10 | 2017-04-10 | A kind of solid insulated busbar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107017041A true CN107017041A (en) | 2017-08-04 |
| CN107017041B CN107017041B (en) | 2018-12-14 |
Family
ID=59446419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710229137.8A Active CN107017041B (en) | 2017-04-10 | 2017-04-10 | A kind of solid insulated busbar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107017041B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364757Y (en) * | 2009-01-16 | 2009-12-16 | 深圳市惠程电气股份有限公司 | 35KV metal tube bus insulated by vulcanized silicon rubber |
| CN202584802U (en) * | 2012-03-29 | 2012-12-05 | 安徽太平洋电缆集团有限公司 | Cooling type parallel cable |
| CN202855392U (en) * | 2012-08-24 | 2013-04-03 | 安徽瑞之星电缆集团有限公司 | High flame retardation fireproof power cable |
| CN203205128U (en) * | 2013-04-03 | 2013-09-18 | 安徽长风电缆集团有限公司 | Light three-core power cable |
| JP2013219887A (en) * | 2012-04-06 | 2013-10-24 | Hitachi Cable Ltd | Solid insulating bus, and terminal connection thereof |
| CN203406078U (en) * | 2013-08-14 | 2014-01-22 | 单泓 | Motor leading cable |
| CN204066780U (en) * | 2014-09-24 | 2014-12-31 | 深圳市惠程电气股份有限公司 | A kind of shield type transfer bus of solid insulation cabinet |
| CN204651068U (en) * | 2015-05-14 | 2015-09-16 | 江苏沃能电气科技有限公司 | A kind of insulating tube type busbar production method conductors dedicated |
| CN106205827A (en) * | 2016-08-28 | 2016-12-07 | 威腾电气集团股份有限公司 | A kind of all-insulation tube bus |
| CN205845563U (en) * | 2016-07-22 | 2016-12-28 | 宁夏中利科技有限公司 | A kind of industry and civil buildings co-extrusion irradiation crosslinking halogen-free low-smoke and flame retardant electric wire |
-
2017
- 2017-04-10 CN CN201710229137.8A patent/CN107017041B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364757Y (en) * | 2009-01-16 | 2009-12-16 | 深圳市惠程电气股份有限公司 | 35KV metal tube bus insulated by vulcanized silicon rubber |
| CN202584802U (en) * | 2012-03-29 | 2012-12-05 | 安徽太平洋电缆集团有限公司 | Cooling type parallel cable |
| JP2013219887A (en) * | 2012-04-06 | 2013-10-24 | Hitachi Cable Ltd | Solid insulating bus, and terminal connection thereof |
| CN202855392U (en) * | 2012-08-24 | 2013-04-03 | 安徽瑞之星电缆集团有限公司 | High flame retardation fireproof power cable |
| CN203205128U (en) * | 2013-04-03 | 2013-09-18 | 安徽长风电缆集团有限公司 | Light three-core power cable |
| CN203406078U (en) * | 2013-08-14 | 2014-01-22 | 单泓 | Motor leading cable |
| CN204066780U (en) * | 2014-09-24 | 2014-12-31 | 深圳市惠程电气股份有限公司 | A kind of shield type transfer bus of solid insulation cabinet |
| CN204651068U (en) * | 2015-05-14 | 2015-09-16 | 江苏沃能电气科技有限公司 | A kind of insulating tube type busbar production method conductors dedicated |
| CN205845563U (en) * | 2016-07-22 | 2016-12-28 | 宁夏中利科技有限公司 | A kind of industry and civil buildings co-extrusion irradiation crosslinking halogen-free low-smoke and flame retardant electric wire |
| CN106205827A (en) * | 2016-08-28 | 2016-12-07 | 威腾电气集团股份有限公司 | A kind of all-insulation tube bus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107017041B (en) | 2018-12-14 |
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