CN111312441A - Heat-insulation protective cable - Google Patents
Heat-insulation protective cable Download PDFInfo
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- CN111312441A CN111312441A CN202010113433.3A CN202010113433A CN111312441A CN 111312441 A CN111312441 A CN 111312441A CN 202010113433 A CN202010113433 A CN 202010113433A CN 111312441 A CN111312441 A CN 111312441A
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- cable
- fire extinguishing
- thermally insulated
- cable according
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a heat insulation protective cable, which comprises: the cable comprises an outer protective layer, three inner protective layers and three conducting wires, wherein the outer protective layers are positioned outside the inner protective layers, the three conducting wires are positioned inside the inner protective layers, a flame-retardant layer is fixedly arranged on the inner wall of each outer protective layer, a heat-insulating layer is fixedly arranged on the inner wall of each flame-retardant layer, a waterproof insulating layer is fixedly arranged on the inner wall of each heat-insulating layer, a fire extinguishing cavity is arranged between each waterproof insulating layer and the corresponding inner protective layer, and a steel sheet is fixedly arranged inside each fire extinguishing cavity; through the insulating layer that sets up, can realize the three-layer function of insulating against heat in the wire outside, utilize the high temperature resistance and the heat-proof quality of a thermal-insulated filling layer and No. two thermal-insulated filling layers, promote the high temperature resistance and the thermal-insulated ability of cable by a wide margin, not only can avoid the ambient temperature factor to influence the normal work of cable, can also avoid the cable during operation high temperature and scald the staff, have very good security.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a heat-insulation protective cable.
Background
The cable is generally a cable similar to a rope and formed by twisting a plurality of or a plurality of groups of leads (at least two leads in each group), each group of leads are mutually insulated and are usually twisted around a center, a highly-insulated covering layer is wrapped outside the whole cable, the cable has the characteristics of internal electrification and external insulation, the wire and cable industry is the second major industry second to the automobile industry in China, and the product variety satisfaction rate and the domestic market share rate both exceed 90%. The total output value of the electric wire and the electric cable in China exceeds the United states worldwide, and the electric wire and the electric cable become the first country for producing the electric wire and the electric cable in the world. Along with the high-speed development of the China wire and cable industry, the number of newly added enterprises is continuously increased, and the overall technical level of the industry is greatly improved.
However, the existing cable mainly comprises a cable core formed by twisting copper wires of PVC plastic particle processing sheath insulation and various specifications, the conductor is often coated with PVC insulation, the common PVC insulation heat conductivity is about 0.14W/mk, the heat insulation effect is general, the temperature of the cable is often increased in the long-term high-temperature environment of a power distribution room, the service life of the cable can be influenced, and spontaneous combustion can also occur in the cable when short circuit occurs, so that fire disasters are caused.
Disclosure of Invention
The present invention is directed to a thermal insulation protective cable, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a thermally insulated protective electrical cable comprising:
the cable comprises three outer protective layers, three inner protective layers and three conducting wires, wherein the outer protective layers are positioned outside the inner protective layers, the three conducting wires are positioned inside the inner protective layers, a flame-retardant layer is fixedly arranged on the inner wall of each outer protective layer, a heat-insulating layer is fixedly arranged on the inner wall of each flame-retardant layer, a waterproof insulating layer is fixedly arranged on the inner wall of each heat-insulating layer, a fire extinguishing cavity is arranged between each waterproof insulating layer and the corresponding inner protective layer, steel sheets are fixedly arranged inside the fire extinguishing cavity and provided with a plurality of groups, partition plates are fixedly arranged inside the steel sheets and divide the inside of the steel sheets into a plurality of cavities, fire extinguishing materials are filled inside the cavities, and a first heat-insulating filling;
a heat-insulating fixing mechanism;
the cable is fixedly installed inside the heat insulation fixing mechanism, and the steel sheets are fixedly connected with the waterproof insulating layer and the inner protective layer respectively.
Preferably, thermal-insulated fixed establishment is including fixed cover, fixed cover inner wall both sides fixed mounting has fixture, and fixture is equipped with two sets ofly, fixture includes connecting rod and sleeve, connecting rod slidable mounting is inside the sleeve, the outside surface cover that the connecting rod is located sleeve inside is equipped with clamp plate and spring, sliding connection between clamp plate and the sleeve, the spring is located clamp plate one end, connecting rod one end extends to fixed cover inside and fixed mounting has the grip block, the connecting rod other end extends to fixed cover outside and fixed mounting has the pull rod.
Preferably, the method further comprises the following steps:
fixing the bolt;
wherein, the fixing bolt is fixedly arranged on two sides of the bottom end of the fixing sleeve.
Preferably, the surface of the outer wall of each of the three conducting wires is sleeved with an insulator, the surface of the outer wall of each insulator is fixedly provided with an insulating core wire, and a second heat insulation filling layer is arranged outside each insulating core wire.
Preferably, the method further comprises the following steps:
a silica gel rod;
the silica gel rod is fixedly arranged at the centers of the three conducting wires.
Preferably, the inner wall surfaces of the two clamping plates are adhered with heat insulation cotton.
Preferably, the clamping plate is of a circular arc structure.
Preferably, the fire extinguishing material consists of fire extinguishing agent and gas generating agent powder, the fire extinguishing agent is superfine dry powder fire extinguishing agent, the mass percentage of the fire extinguishing agent is more than 90%, and the gas generating agent is solid powder.
Preferably, the sleeve is fixedly connected with the fixed sleeve.
Preferably, the heat insulation layer is formed by weaving ceramic fibers.
Preferably, the first heat insulation filling layer and the second heat insulation filling layer are made of ceramic fiber cotton materials.
Preferably, the conducting wire is a conductor made of copper and aluminum single wires.
Preferably, the steel sheets are uniformly distributed in the fire extinguishing chamber, and the distance between every two adjacent steel sheets is consistent.
Compared with the prior art, the invention has the beneficial effects that:
1. through the insulating layer that sets up, because the insulating layer specifically is formed for ceramic fibre weaves, make it have very good thermal-insulated effect, simultaneously thermal-insulated filling layer and thermal-insulated filling layer No. two in the cooperation, then can realize the three-layer function of insulating against heat in the wire outside, utilize the high temperature resistance and the heat-proof quality of thermal-insulated filling layer and thermal-insulated filling layer No. two, promote the high temperature resistance and the heat-proof ability of cable by a wide margin, not only can avoid the normal work that the external temperature factor influences the cable, can also avoid the cable during operation high temperature and scald the staff, very good security has.
2. Through the chamber of putting out a fire that sets up, when the cable spontaneous combustion because of the short circuit, can follow the inside wire spontaneous combustion of cable earlier, then will ignite interior inoxidizing coating, when interior inoxidizing coating burning, can take place the damage, then can open the cavity in the steel sheet, the temperature also can rise when burning simultaneously, when reaching the certain degree, gas generating agent powder begins release gas, then can be with the fire extinguishing agent crowded into in the cavity, then outside blowout, thereby the blowout fire extinguishing agent is put out a fire, can effectively prevent the continuation of conflagration and take place, very good security has, and the steel sheet can also increase the mechanical strength of cable, improve anti-erosion ability.
3. Through the thermal-insulated fixed establishment who sets up, can fix the cable through thermal-insulated fixed establishment, the thermal-insulated cotton on clamping plate surface can insulate against heat to the cable simultaneously, has prevented that the cable from being in under the high temperature state and taking place to damage, has ensured the life of cable just, the installation and the fixing to the cable of also being convenient for moreover.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic cross-sectional view of a cable according to the present invention;
FIG. 4 is a schematic view of the internal structure of the steel sheet of the present invention;
FIG. 5 is a schematic structural diagram of a clamping mechanism according to the present invention.
In the figure: 1-a cable; 2-a heat-insulating fixing mechanism; 3-a pull rod; 4-fixing the sleeve; 5-a clamping mechanism; 6-clamping a plate; 7-heat insulation cotton; 8-an outer protective layer; 9-a flame retardant layer; 10-a thermal insulation layer; 11-a waterproof insulating layer; 12-a fire extinguishing chamber; 13-a fire extinguishing material; 14-steel sheet; 15-an inner protective layer; 16-a thermal insulation filling layer; 17-a wire; 18-second insulating filling layer; 19-silica gel stick; 20-an insulator; 21-an insulated core wire; 22-a separator; 23-a connecting rod; 24-a sleeve; 25-a spring; 26-a press plate; 27-a fixing bolt; 28-chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1-5, the present invention provides a technical solution: a thermally insulated protective electrical cable comprising: a cable 1 and a heat insulation fixing mechanism 2.
Wherein, cable 1 includes outer inoxidizing coating 8, interior inoxidizing coating 15 and wire 17, wire 17 is equipped with three, outer inoxidizing coating 8 is located 15 outsides of interior inoxidizing coating, three of them wire 17 is located inside inoxidizing coating 15, 8 inner wall fixed mounting of outer inoxidizing coating has fire- retardant layer 9, 9 inner wall fixed mounting of fire-retardant layer have insulating layer 10, 10 inner wall fixed mounting of insulating layer has waterproof insulation layer 11, be provided with fire extinguishing chamber 12 between waterproof insulation layer 11 and the interior inoxidizing coating 15, the inside fixed mounting in fire extinguishing chamber 12 has steel sheet 14, and steel sheet 14 is equipped with the multiunit, 14 inside fixed mounting of steel sheet has baffle 22, and baffle 22 with 14 inside a plurality of cavities 28 of cutting apart into of steel sheet, 28 inside packing of cavity has fire extinguishing material 13, 14 outside packing of steel sheet.
Furthermore, because the thermal-insulating layer 10 is specifically woven by ceramic fibers, the thermal-insulating layer has a very good thermal-insulating effect, and meanwhile, the first thermal-insulating filling layer 16 and the second thermal-insulating filling layer 18 are matched, so that a three-layer thermal-insulating function can be realized outside the wire 17, and the high-temperature resistance and the thermal-insulating property of the first thermal-insulating filling layer 16 and the second thermal-insulating filling layer 18 are utilized, so that the high-temperature resistance and the thermal-insulating property of the cable 1 are greatly improved, the normal operation of the cable can be prevented from being influenced by external temperature factors, workers can be prevented from being scalded by overhigh temperature during the operation of the cable, and the thermal-insulating.
The cable 1 is fixedly installed inside the heat insulation fixing mechanism 2, and the steel sheets 14 are respectively and fixedly connected with the waterproof insulation layer 11 and the inner protective layer 15.
Furthermore, the partition plates 22 divide the interior of the steel sheet 14 into a plurality of chambers 28, so that the cable 1 can be cut, the fire extinguishing material 13 in the steel sheet 14 does not leak out completely due to cutting, only the fire extinguishing material 13 in the chamber 28 at the cut part leaks out, and the normal use of the cable 1 is not affected.
The surface of the outer wall of each of the three leads 17 is sleeved with an insulator 20, the surface of the outer wall of each insulator 20 is fixedly provided with an insulating core wire 21, and a second heat insulation filling layer 18 is arranged outside each insulating core wire 21.
Wherein, still include: a silica gel rod 19.
Wherein, the silica gel stick 19 is fixedly arranged at the center of three of the conducting wires 17.
Further, the silicone rod 19 can enhance the tear resistance of the cable.
The fire extinguishing material 13 is composed of a fire extinguishing agent and gas generating agent powder, the fire extinguishing agent is superfine dry powder fire extinguishing agent, the mass percentage of the fire extinguishing agent is more than 90%, and the gas generating agent is solid powder.
Wherein, the heat insulation layer 10 is specifically formed by weaving ceramic fibers.
Further, the cable 1 is made to have a very good heat insulating effect.
The first heat insulation filling layer 16 and the second heat insulation filling layer 18 are made of ceramic fiber cotton materials.
Further, the high temperature resistance and the heat insulation capability of the cable 1 can be greatly improved.
The wire 17 is a conductor made of copper and aluminum single wires.
Wherein the steel sheets 14 are uniformly distributed inside the fire extinguishing chamber 12, and wherein the distance between each adjacent steel sheet 14 is uniform.
Further, it is ensured that the cavities 28 in the steel sheets 14 are evenly distributed around the cable 1, thereby improving the fire extinguishing effect.
By combining the above embodiments, when the cable 1 is spontaneously combusted due to a short circuit, the cable 1 can be automatically ignited from the conducting wire inside the cable 1, then the inner protective layer 15 can be ignited, when the inner protective layer 15 is combusted, the inner protective layer is damaged, the cavity 28 in the steel sheet 14 can be opened, meanwhile, the temperature can be increased during combustion, when a certain degree is reached, the gas generating agent powder starts to release gas, the fire extinguishing agent can be squeezed into the cavity 28 and then is sprayed outwards, so that the fire extinguishing agent is sprayed out to extinguish the fire, the continuous occurrence of a fire can be effectively prevented, the safety is very good, the steel sheet 14 can also increase the mechanical strength of the cable 1, and the erosion resistance is improved.
Example 2:
referring to fig. 1, fig. 2 and fig. 5, the present invention provides a technical solution: the utility model provides a thermal-insulated protective cable, thermal-insulated fixed establishment 2 is including fixed cover 4, fixed 4 inner wall both sides fixed mounting of cover have fixture 5, and fixture 5 is equipped with two sets ofly, fixture 5 includes connecting rod 23 and sleeve 24, connecting rod 23 slidable mounting is inside sleeve 24, the outside surface cover that connecting rod 23 is located sleeve 24 inside is equipped with clamp plate 26 and spring 25, sliding connection between clamp plate 26 and the sleeve 24, spring 25 is located clamp plate 26 one end, 23 one end of connecting rod extends to fixed 4 inside and fixed mounting of cover has grip block 6, the connecting rod 23 other end extends to fixed 4 outside and fixed mounting of cover has pull rod 3.
Wherein, still include: the bolt 27 is fixed.
Wherein, the fixing bolt 27 is fixedly arranged at two sides of the bottom end of the fixing sleeve 4.
Further, the fixing bolt 27 can be used for installing and fixing the cable 1, and the operation is convenient and fast.
Wherein, the inner wall surfaces of two of the clamping plates 6 are adhered with heat insulation cotton 7.
Further, the heat insulation cotton 7 on the surface of the clamping plate 6 can insulate heat of the cable 1, the cable 1 is prevented from being damaged when being in a high-temperature state, the service life of the cable 1 is guaranteed, and the cable is convenient to mount and fix.
Wherein, the clamping plate 6 is in a circular arc structure.
Further, be convenient for grip block 6 can be better with cable 1 between laminating mutually to improve fixed effect.
Wherein, the sleeve 24 is fixedly connected with the fixed sleeve 4.
As described in the above embodiments, when the cable 1 is fixed, the pull rod 3 is held by a hand, and then the pull rod 3 is pulled to both sides, the connecting rod 23 can be moved to one side, so that the pressing plate 26 can also move, the spring 25 can be compressed, and meanwhile, the two clamping plates 6 can be separated, so that the distance between the two clamping plates 6 is increased, then the cable 1 passes through the space between the two clamping plates 6, after the predetermined position is reached, the two pull rods 3 can be loosened, the connecting rod 23 can move back to the initial position under the elastic force of the spring 25, so that the clamping plates 6 can be driven to move to the surface of the cable 1, and meanwhile, the cable 1 can be fixed under the elastic force of the spring 25, so that the cable 1 can be fixed, and people can install and fix the cable 1 conveniently.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus may be implemented in other ways. The welding or screwing or winding of the parts to be welded or screwed together as shown or discussed can be assisted by means of devices such as welding torches, screwing with wrenches, etc., and the parts of the device can be made of various materials, such as metal materials, for example, aluminum alloys, steel and copper, by casting or by mechanical stamping.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (13)
1. A thermally insulated protective cable, comprising:
the cable (1), the cable (1) includes outer inoxidizing coating (8), interior inoxidizing coating (15) and wire (17), wire (17) are equipped with three, outer inoxidizing coating (8) are located interior inoxidizing coating (15) outside, three of them wire (17) are located inside interior inoxidizing coating (15), outer inoxidizing coating (8) inner wall fixed mounting has fire-retardant layer (9), fire-retardant layer (9) inner wall fixed mounting has insulating layer (10), insulating layer (10) inner wall fixed mounting has waterproof insulation layer (11), be provided with fire extinguishing chamber (12) between waterproof insulation layer (11) and interior inoxidizing coating (15), the inside fixed mounting in fire extinguishing chamber (12) has steel sheet (14), and steel sheet (14) are equipped with the multiunit, the inside fixed mounting in steel sheet (14) has baffle (22), and baffle (22) are with inside a plurality of cavity (28) of cutting apart into of steel sheet (14, the chamber (28) is filled with a fire extinguishing material (13), and the steel sheet (14) is filled with a first heat insulation filling layer (16) outside;
a heat-insulating fixing mechanism (2);
the cable (1) is fixedly installed inside the heat insulation fixing mechanism (2), and the steel sheets (14) are fixedly connected with the waterproof insulating layer (11) and the inner protective layer (15) respectively.
2. A thermally insulated protective cable according to claim 1, characterized in that: thermal-insulated fixed establishment (2) is including fixed cover (4), fixed cover (4) inner wall both sides fixed mounting has fixture (5), and fixture (5) are equipped with two sets ofly, fixture (5) are including connecting rod (23) and sleeve (24), connecting rod (23) slidable mounting is inside sleeve (24), the outside surface cover that connecting rod (23) are located sleeve (24) inside is equipped with clamp plate (26) and spring (25), sliding connection between clamp plate (26) and sleeve (24), spring (25) are located clamp plate (26) one end, connecting rod (23) one end extends to fixed cover (4) inside and fixed mounting have grip block (6), connecting rod (23) other end extends to fixed cover (4) outside and fixed mounting have pull rod (3).
3. The insulated protection cable of claim 1, further comprising:
a fixing bolt (27);
wherein, the fixing bolt (27) is fixedly arranged at two sides of the bottom end of the fixing sleeve (4).
4. A thermally insulated protective cable according to claim 1, characterized in that: the surface of the outer wall of each of the three conducting wires (17) is sleeved with an insulator (20), the surface of the outer wall of each insulator (20) is fixedly provided with an insulating core wire (21), and a second heat insulation filling layer (18) is arranged outside each insulating core wire (21).
5. A thermally insulated protective cable according to claim 1, characterized in that: further comprising:
a silica gel rod (19);
the silica gel rod (19) is fixedly arranged at the centers of the three conducting wires (17).
6. A thermally insulated protective cable according to claim 2, characterized in that: wherein the inner wall surfaces of the two clamping plates (6) are adhered with heat insulation cotton (7).
7. A thermally insulated protective cable according to claim 2, characterized in that: the clamping plate (6) is of a circular arc structure.
8. A thermally insulated protective cable according to claim 1, characterized in that: the fire extinguishing material (13) is composed of a fire extinguishing agent and gas generating agent powder, the fire extinguishing agent is superfine dry powder fire extinguishing agent, the mass percentage of the fire extinguishing agent is more than 90%, and the gas generating agent is solid powder.
9. A thermally insulated protective cable according to claim 2, characterized in that: the sleeve (24) is fixedly connected with the fixed sleeve (4).
10. A thermally insulated protective cable according to claim 1, characterized in that: the heat insulation layer (10) is formed by weaving ceramic fibers.
11. A thermally insulated protective cable according to claim 1, characterized in that: the first heat insulation filling layer (16) and the second heat insulation filling layer (18) are made of ceramic fiber cotton materials.
12. A thermally insulated protective cable according to claim 1, characterized in that: the lead (17) is a conductor made of copper and aluminum single wires.
13. A thermally insulated protective cable according to claim 1, characterized in that: the steel sheets (14) are uniformly distributed inside the fire extinguishing cavity (12), and the distance between every two adjacent steel sheets (14) is consistent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010113433.3A CN111312441B (en) | 2020-02-24 | 2020-02-24 | Heat-insulation protective cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010113433.3A CN111312441B (en) | 2020-02-24 | 2020-02-24 | Heat-insulation protective cable |
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| CN111312441A true CN111312441A (en) | 2020-06-19 |
| CN111312441B CN111312441B (en) | 2021-12-10 |
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Cited By (5)
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| CN111682476A (en) * | 2020-06-23 | 2020-09-18 | 崔亮 | Photoelectric combined cable mounting rack |
| CN112186661A (en) * | 2020-09-21 | 2021-01-05 | 黄国清 | Bunching device for network engineering |
| CN112271697A (en) * | 2020-10-29 | 2021-01-26 | 江西亿博自动化设备有限公司 | High-temperature instantaneous interruption device for power equipment |
| CN114725856A (en) * | 2022-05-03 | 2022-07-08 | 江苏上诚电缆有限公司 | Fire-resistant RVV cable protective layer |
| CN114898934A (en) * | 2022-06-13 | 2022-08-12 | 广东远光电缆实业有限公司 | High-temperature-resistant insulated photovoltaic cable |
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