WO2019114208A1 - Low-smoke zero-halogen fire-resistant flexible power cable - Google Patents
Low-smoke zero-halogen fire-resistant flexible power cable Download PDFInfo
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- WO2019114208A1 WO2019114208A1 PCT/CN2018/089277 CN2018089277W WO2019114208A1 WO 2019114208 A1 WO2019114208 A1 WO 2019114208A1 CN 2018089277 W CN2018089277 W CN 2018089277W WO 2019114208 A1 WO2019114208 A1 WO 2019114208A1
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- fire
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- resistant flexible
- halogen
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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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- 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
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
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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
- H01B7/187—Sheaths comprising extruded non-metallic layers
Definitions
- the invention relates to a fire-resistant flexible cable, in particular to a low-smoke halogen-free fire-resistant flexible cable which can be widely applied to large-scale densely populated places such as shopping malls and hotels, and has a fire-resistant temperature of up to 1050 °C.
- the fire-resistant wire is to ensure that the line is normally energized and transmitted with various control and alarm signals during a certain period of time to ensure the normal lighting, emergency broadcast, fire alarm device, automatic fire-fighting facilities and other emergency equipment in the event of fire.
- the power supply enables the personnel to evacuate in time, so that the rescue work can be carried out normally.
- the reliability of the fire-resistant wire is very important. With the gradual attention of the state to fire prevention work, people's awareness of safety has gradually increased. In order to improve the safety level of electrical circuits and reduce the occurrence and loss of electrical fire accidents, the Ministry of Construction, the Ministry of Public Security and some local governments have successively promulgated some electrical design codes, and clearly stipulated that fire-resistant cables should be used in some important electrical circuits or places.
- the common domestic fire-resistant cables can only reach the highest fire-resisting temperature of 750-850 °C. Even in the BS 6387 European fire-resistant standard, the highest fire-resistant temperature is only 950 °C. In the event of a large fire, the temperature exceeds 950 °C. When this series of cables will lose fire resistance.
- the material of the conductor for the cable is generally copper, and the melting point of copper is 1083.4 ° C. Therefore, domestic and foreign related professionals are studying a fire resistant cable with a maximum fire resistance temperature exceeding 950 ° C and lower than the melting point of copper.
- a low-smoke, halogen-free fire-resistant flexible cable comprising a sheath layer, an insulating layer, a mica tape layer and a conductor in order from the outside to the inside.
- the sheath layer material is an environment-friendly low-smoke halogen-free polyolefin material with a high temperature resistance up to 110 ° C.
- the above materials are coated on a cable-cable core of a cable insulated core or a multi-core cable by an extrusion process.
- the low-smoke and halogen-free sheathing material is a temperature-resistant 90°C material, and its aging resistance test condition is 100°C, compared with 168h, the environmentally friendly low-smoke halogen-free polyolefin sheathing material used in the product.
- the high temperature resistance can reach 110 °C, and it can be used in the aging resistance test conditions: 110 ° C, 480 h, matching with its high temperature resistant insulating material.
- the material of the insulating layer is a cross-linked polyethylene insulating material with high temperature resistance up to 110 ° C.
- the material is coated on the virgin mica tape by extrusion coating to ensure the insulation performance of the product.
- Through testing the material high temperature up to 110 ° C can pass the aging test conditions: 150 ° C, 168 h, and the insulation materials used in the market such products: 90 ° C temperature grade, aging resistance test conditions of 135 ° C, 168h Compared with the product, the temperature resistance and insulation performance of the product are further improved.
- the above materials have strong high temperature resistance performance, can meet the 90 °C high temperature pressure test, and ensure that the indentation is less than or equal to 50%.
- the conventional products can only meet the 80 °C high temperature resistance test.
- the thickness of the insulation and the sheath can be protected from the serious damage, and the thickness of the insulation and the sheath is ensured, thereby further improving the product.
- the insulating layer has a thickness of 0.7 to 2.4 mm.
- the mica tape layer is wrapped by a double-layered overlay of calcined phlogopite tape, and the tiling rate of the lap is preferably 50%.
- the conductor is formed by stranding a plurality of annealed bare copper wires. Specifically, a bare copper conductor is stranded and annealed by a class 5 or class 6 fine copper wire, and the conductor has a specification of 1.5 mm 2 to 630 mm 2 .
- the cable has a maximum fire resistance of 1050 ° C and a duration of 120 minutes.
- the flexible cable has good softness, the minimum bending radius is 5D, and D is the outer diameter of the cable.
- the rated working voltage of the cable of the invention is 0.6/1 (1.2) kV
- the long-term working temperature of the cable conductor is less than or equal to 110 ° C
- the ambient temperature is not lower than 0 ° C when the cable is laid
- the minimum bending radius of the cable can reach 5 times outside the cable.
- the diameter value even when the large fire temperature exceeds 950 ° C and is lower than the melting point of copper, the cable can effectively play its role, greatly improving the safety of use and ensuring the safety of personnel.
- the flexible cable of the present invention greatly increases the temperature of the fire resistance, infinitely close to the melting point of copper. Therefore, the product can be widely used in large-scale populated places such as shopping malls and hotels. In the event of a fire, it can provide sufficient safe power supply time and signal transmission for the line to ensure that the personnel are evacuated within the effective time period. It greatly improves the safety of product use and ensures the safety of personnel.
- Figure 1 is a schematic view of the structure of the present invention.
- a low-smoke, halogen-free fire-resistant flexible cable, from the outside to the inside is:
- Jacket layer 1 the material is environmentally friendly low-smoke halogen-free polyolefin material with high temperature resistance up to 110 °C, and 110 °C environmentally friendly low-smoke halogen-free polyolefin with the grade DW9022-C01 of China Guangdong Nuclear Power Delta (Jiangsu) Plastics Co., Ltd.
- the sheath material is coated on the cabled core of the cable insulated core or multi-core cable by an extrusion process.
- the low-smoke and halogen-free sheathing material is a temperature-resistant 90°C material, and its aging resistance test condition is 100°C, compared with 168h, the environmentally friendly low-smoke halogen-free polyolefin sheathing material used in the product.
- the high temperature resistance can reach 110 °C, and it can be used in the aging resistance test conditions: 110 ° C, 480 h, matching with its high temperature resistant insulating material.
- Insulation layer 2 the material is XLPE insulation material with high temperature resistance up to 110 °C. It is made of cross-linked polyethylene insulation material of CAX9100HMB9003B produced by Shanghai Kaipot Cable Compound Factory. The material is coated by extrusion. The refractory layer mica belt ensures the insulation properties of the product. Through testing the material high temperature up to 110 ° C, can pass the aging test conditions: 150 ° C, 168 h, and the insulation materials used in the market such products: 90 ° C temperature grade, aging resistance test conditions of 135 ° C, 168h Compared with the product, the temperature resistance and insulation performance of the product are further improved.
- the above materials have strong high temperature resistance performance, can meet the 90 °C high temperature pressure test, and ensure that the indentation is less than or equal to 50%.
- the conventional products can only meet the 80 °C high temperature resistance test.
- the thickness of the insulation and the sheath can be protected from the serious damage, and the thickness of the insulation and the sheath is ensured, thereby further improving the product.
- Use security The insulating layer has a thickness of 0.7 to 2.4 mm.
- the mica tape layer 3 the mica tape layer is wrapped by a double-layer overlapping lap of calcined phlogopite, and the tiling rate of the lap is preferably 50%.
- the calcined phlogopite tape was purchased from Hubei Pingan Electrical Materials Co., Ltd., and the mica tape was CP160G32A with a thickness of 0.14 mm.
- Conductor 4 the conductor is formed by stranding a plurality of annealed bare copper wires. Specifically, a bare copper conductor is stranded and annealed by a class 5 or class 6 fine copper wire, and the conductor has a specification of 1.5 mm 2 to 630 mm 2 .
- the nominal value of the thickness of the above-mentioned soft cable extrusion sheath should be calculated according to the following formula:
- the assumed diameter of the cable before the sheath is sheathed, in millimeters (mm) (see Appendix A of IEC 60502-1).
- the value calculated according to the above formula should be repaired to 0.1 mm (see IEC 60502-1 Appendix B).
- the nominal thickness of the single-core cable jacket shall be not less than 1.4 mm, and the nominal thickness of the multi-core cable jacket shall be not less than 1.8 mm.
- the thinnest point t of the sheath is required to be as follows: t ⁇ 0.85 T - 0.1 mm.
- the cable has a fire resistance temperature of up to 1050 ° C, which is infinitely close to the melting point of copper. Even when the large fire temperature exceeds 950 ° C and is lower than the melting point of copper, the cable can effectively play its role, greatly improving the safety of use. To protect the safety of personnel.
- the rated working voltage of the cable is 0.6/1 (1.2) kV
- the long-term working temperature of the cable conductor is less than or equal to 110 °C
- the ambient temperature is not lower than 0 °C when the cable is laid
- the minimum bending radius of the cable can reach 5 times the cable. Outer diameter value.
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- Insulated Conductors (AREA)
Abstract
A low-smoke zero-halogen fire-resistant flexible power cable comprises, from an outer side to an inner side, a sheath layer (1), an insulation layer (2), a mica tape layer (3), and a conductive member (4). The material of the sheath layer (1) is an environmentally-friendly low-smoke zero-halogen polyolefin material having high-temperature resistance to 110℃. The material of the insulation layer (2) is a cross-linked polyethylene insulation material also having high-temperature resistance to 110℃. The mica tape layer (3) is fabricated by winding two overlapping layers of a calcined phlogopite mica tape. The conductive member (4) is fabricated by twisting multiple annealed bare copper wires. The power cable is fire-resistant up to 1050℃, extremely close to the melting point of copper. The power cable is capable of effective operation even in a major fire having a temperature higher than 950℃ and lower than the melting point of copper, thereby significantly improving safety during use, and ensuring the life safety of people.
Description
本发明涉及一种耐火软电缆,具体是一种耐火温度可达1050℃,可广泛应用于商场、酒店等大型人口密集场所的低烟无卤耐火软电缆。The invention relates to a fire-resistant flexible cable, in particular to a low-smoke halogen-free fire-resistant flexible cable which can be widely applied to large-scale densely populated places such as shopping malls and hotels, and has a fire-resistant temperature of up to 1050 °C.
随着我国经济不断的高速发展,现代化的写字楼、宾馆、饭店、火车站等重要的公共场所装饰越发变得豪华,使用的可燃物也越来越多。电线电缆作用是传输电力、信号,实现报警、消防设施的启动、救援等,针对上述人口密集型场所,在发生火灾后,电线电缆如果不能保障正常工作,则后果不堪设想。With the rapid development of China's economy, modern office buildings, hotels, restaurants, railway stations and other important public places have become more and more luxurious, and more and more combustibles are used. The role of wire and cable is to transmit electricity and signals, to realize alarms, start-up of fire-fighting facilities, rescue, etc. For the above-mentioned densely populated places, if the wires and cables cannot guarantee normal work after the fire, the consequences are unimaginable.
耐火电线就是在火灾发生时保证线路在一定时间里正常通电、传输各种控制、报警信号,以保障一旦发生火灾时通道的照明、应急广播、防火报警装置、自动消防设施及其它应急设备的正常供电,使人员及时疏散,使救援工作得以正常进行,可见耐火电线的可靠性至关重要。随着国家对防火工作的逐渐重视,人们的安全意识也逐步提高。为了提高电器线路的安全等级,减少电气火灾事故的发生及损失,国家建设部、公安部以及一些地方政府相继颁布了一些电气设计规范,并明确规定在一些重要的电器线路或场所宜采用耐火电缆,全球各国家也对耐火电线电缆产品的需求量正在逐年呈上升趋势,为了确保公共场所等重要场合的消防安全问题应大力推广选用耐火阻燃、低烟无卤的耐火电缆。The fire-resistant wire is to ensure that the line is normally energized and transmitted with various control and alarm signals during a certain period of time to ensure the normal lighting, emergency broadcast, fire alarm device, automatic fire-fighting facilities and other emergency equipment in the event of fire. The power supply enables the personnel to evacuate in time, so that the rescue work can be carried out normally. It is obvious that the reliability of the fire-resistant wire is very important. With the gradual attention of the state to fire prevention work, people's awareness of safety has gradually increased. In order to improve the safety level of electrical circuits and reduce the occurrence and loss of electrical fire accidents, the Ministry of Construction, the Ministry of Public Security and some local governments have successively promulgated some electrical design codes, and clearly stipulated that fire-resistant cables should be used in some important electrical circuits or places. The demand for fire-resistant wire and cable products is also increasing year by year in various countries around the world. In order to ensure fire safety issues in important places such as public places, fire-resistant, flame-retardant, low-smoke and halogen-free fire-resistant cables should be promoted.
然而,现阶段国内常见的耐火电缆一般仅能达到最高耐火温度为750~850℃,即使在BS 6387欧洲的耐火标准中,最高耐火温度也仅有950℃,一旦发生大型火灾,温度超过950℃时,该系列电缆将失去耐火作用。我们都知道电缆用导体的材料一般为铜,而铜的熔点为1083.4℃,因此,国内、外相关专业人员均在研究一种耐火最高温度可超过950℃且低于铜的熔点的耐火电缆。However, at this stage, the common domestic fire-resistant cables can only reach the highest fire-resisting temperature of 750-850 °C. Even in the BS 6387 European fire-resistant standard, the highest fire-resistant temperature is only 950 °C. In the event of a large fire, the temperature exceeds 950 °C. When this series of cables will lose fire resistance. We all know that the material of the conductor for the cable is generally copper, and the melting point of copper is 1083.4 ° C. Therefore, domestic and foreign related professionals are studying a fire resistant cable with a maximum fire resistance temperature exceeding 950 ° C and lower than the melting point of copper.
发明内容Summary of the invention
本发明的目的是提供一种低烟无卤耐火软电缆,该软电缆的耐火温度达1050℃。SUMMARY OF THE INVENTION It is an object of the present invention to provide a low-smoke, halogen-free, fire-resistant flexible cable having a fire resistance temperature of 1050 ° C.
为了达到上述技术目的,本发明的技术方案是:In order to achieve the above technical purpose, the technical solution of the present invention is:
一种低烟无卤耐火软电缆,由外向内依次包括护套层、绝缘层、云母带层和导体。A low-smoke, halogen-free fire-resistant flexible cable comprising a sheath layer, an insulating layer, a mica tape layer and a conductor in order from the outside to the inside.
所述护套层材料为耐高温达110℃的环保型低烟无卤聚烯烃材料,上述材料采用挤包工艺包覆在电缆绝缘线芯或多芯电缆的成缆缆芯上。与市场上常规此类产品低烟无卤护套材料为耐温90℃型材料,其耐老化试验条件为100℃,168h相比,该产品采用的环保型低烟无卤聚烯烃护套料耐高温可达110℃,可通过耐老化试验条件:110℃、480h,匹配其耐高温绝缘材料使用。The sheath layer material is an environment-friendly low-smoke halogen-free polyolefin material with a high temperature resistance up to 110 ° C. The above materials are coated on a cable-cable core of a cable insulated core or a multi-core cable by an extrusion process. Compared with the conventional products on the market, the low-smoke and halogen-free sheathing material is a temperature-resistant 90°C material, and its aging resistance test condition is 100°C, compared with 168h, the environmentally friendly low-smoke halogen-free polyolefin sheathing material used in the product. The high temperature resistance can reach 110 °C, and it can be used in the aging resistance test conditions: 110 ° C, 480 h, matching with its high temperature resistant insulating material.
所述绝缘层的材料为耐高温达110℃的交联聚乙烯绝缘材料,该材料通过挤包包覆在耐火层云母带上,保障产品的绝缘性能。通过测试该材料耐高温可达110℃,可通过耐老化试验条件:150℃、168h,与市场上常规此类产品使用的绝缘材料:90℃耐温等级、耐老化试验条件为135℃,168h相比,进一步提高了产品的耐温性能、绝缘性能。上述材料具有较强的耐高温压力性能,可满足90℃耐高温压力试验,保证压痕小于等于50%,现阶段常规产品仅能满足80℃耐高温压力试验。该产品在实际使用发热过程中,如受重物或一定压力作用,可以保障绝缘、护套的厚度不至受较严重的损害,保障了绝缘、护套的厚度,从而更进一步提高了产品的使用安全性。所述绝缘层厚度为0.7~2.4mm。The material of the insulating layer is a cross-linked polyethylene insulating material with high temperature resistance up to 110 ° C. The material is coated on the virgin mica tape by extrusion coating to ensure the insulation performance of the product. Through testing the material high temperature up to 110 ° C, can pass the aging test conditions: 150 ° C, 168 h, and the insulation materials used in the market such products: 90 ° C temperature grade, aging resistance test conditions of 135 ° C, 168h Compared with the product, the temperature resistance and insulation performance of the product are further improved. The above materials have strong high temperature resistance performance, can meet the 90 °C high temperature pressure test, and ensure that the indentation is less than or equal to 50%. At present, the conventional products can only meet the 80 °C high temperature resistance test. In the actual use of the heating process, such as the weight or a certain pressure, the thickness of the insulation and the sheath can be protected from the serious damage, and the thickness of the insulation and the sheath is ensured, thereby further improving the product. Use security. The insulating layer has a thickness of 0.7 to 2.4 mm.
所述云母带层由煅烧金云母带双层重叠搭盖绕包包制,所述搭盖的搭盖率优选为50%。The mica tape layer is wrapped by a double-layered overlay of calcined phlogopite tape, and the tiling rate of the lap is preferably 50%.
所述导体由多根退火裸铜丝绞合而成。具体地,采用class5或class6细铜丝绞合退火裸铜导体,所述导体规格为1.5mm
2~630mm
2。
The conductor is formed by stranding a plurality of annealed bare copper wires. Specifically, a bare copper conductor is stranded and annealed by a class 5 or class 6 fine copper wire, and the conductor has a specification of 1.5 mm 2 to 630 mm 2 .
所述电缆的耐火最高温度为1050℃,时长120分钟。The cable has a maximum fire resistance of 1050 ° C and a duration of 120 minutes.
所述软电缆具有较好的柔软度,最小弯曲半径为5D,D为电缆外径。The flexible cable has good softness, the minimum bending radius is 5D, and D is the outer diameter of the cable.
本发明电缆的额定工作电压为0.6/1(1.2)kV、电缆导体的长期工作温度小于等于110℃、电缆敷设时,环境温度不低于0℃、电缆的最小弯曲半径 可达到5倍电缆外径值,即使在大型火灾温度超过950℃且低于铜的熔点时,该电缆仍能有效发挥其作用,极大的提高了使用的安全性,保障了人员的生命安全。本发明的软电缆大大提高了耐火性能的温度,无限接近铜的熔点。因此该产品可广泛应用于商场、酒店等大型人口密集场所,一旦发生火灾时,可为线路提供充足的安全供电时间、信号传输等作用,保障人员在有效时间段内得到疏散。大幅度提高了产品使用的安全性,且保障了人员的生命安全。The rated working voltage of the cable of the invention is 0.6/1 (1.2) kV, the long-term working temperature of the cable conductor is less than or equal to 110 ° C, the ambient temperature is not lower than 0 ° C when the cable is laid, and the minimum bending radius of the cable can reach 5 times outside the cable. The diameter value, even when the large fire temperature exceeds 950 ° C and is lower than the melting point of copper, the cable can effectively play its role, greatly improving the safety of use and ensuring the safety of personnel. The flexible cable of the present invention greatly increases the temperature of the fire resistance, infinitely close to the melting point of copper. Therefore, the product can be widely used in large-scale populated places such as shopping malls and hotels. In the event of a fire, it can provide sufficient safe power supply time and signal transmission for the line to ensure that the personnel are evacuated within the effective time period. It greatly improves the safety of product use and ensures the safety of personnel.
图1为本发明的结构示意图。Figure 1 is a schematic view of the structure of the present invention.
下面结合附图和具体实施方式对本发明作进一步详细的说明。The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
如图1所示,一种低烟无卤耐火软电缆,由外向内依次为:As shown in Figure 1, a low-smoke, halogen-free fire-resistant flexible cable, from the outside to the inside, is:
护套层1,材料为耐高温达110℃的环保型低烟无卤聚烯烃材料,采用中广核三角洲(江苏)塑化有限公司的牌号为DW9022-C01的110℃环保型低烟无卤聚烯烃护套料,该材料采用挤包工艺包覆在电缆绝缘线芯或多芯电缆的成缆缆芯上。与市场上常规此类产品低烟无卤护套材料为耐温90℃型材料,其耐老化试验条件为100℃,168h相比,该产品采用的环保型低烟无卤聚烯烃护套料耐高温可达110℃,可通过耐老化试验条件:110℃、480h,匹配其耐高温绝缘材料使用。 Jacket layer 1, the material is environmentally friendly low-smoke halogen-free polyolefin material with high temperature resistance up to 110 °C, and 110 °C environmentally friendly low-smoke halogen-free polyolefin with the grade DW9022-C01 of China Guangdong Nuclear Power Delta (Jiangsu) Plastics Co., Ltd. The sheath material is coated on the cabled core of the cable insulated core or multi-core cable by an extrusion process. Compared with the conventional products on the market, the low-smoke and halogen-free sheathing material is a temperature-resistant 90°C material, and its aging resistance test condition is 100°C, compared with 168h, the environmentally friendly low-smoke halogen-free polyolefin sheathing material used in the product. The high temperature resistance can reach 110 °C, and it can be used in the aging resistance test conditions: 110 ° C, 480 h, matching with its high temperature resistant insulating material.
绝缘层2,材料为耐高温达110℃的交联聚乙烯绝缘材料,采用上海凯波特种电缆料厂生产的牌号为CAX9100HMB9003B的交联聚乙烯型绝缘材料,该材料通过挤包包覆在耐火层云母带上,保障产品的绝缘性能。通过测试该材料耐高温可达110℃,可通过耐老化试验条件:150℃、168h,与市场上常规此类产品使用的绝缘材料:90℃耐温等级、耐老化试验条件为135℃,168h相比,进一步提高了产品的耐温性能、绝缘性能。上述材料具有较强的耐高温压力性能,可满足90℃耐高温压力试验,保证压痕小于等于50%,现阶段常规产品仅能满足80℃耐高温压力试验。该产品在实际使用发热过程中,如受重物或一定压力作用,可以保障绝缘、护套的厚度不至受较严重的损害,保障了绝缘、护 套的厚度,从而更进一步提高了产品的使用安全性。所述绝缘层厚度为0.7~2.4mm。Insulation layer 2, the material is XLPE insulation material with high temperature resistance up to 110 °C. It is made of cross-linked polyethylene insulation material of CAX9100HMB9003B produced by Shanghai Kaipot Cable Compound Factory. The material is coated by extrusion. The refractory layer mica belt ensures the insulation properties of the product. Through testing the material high temperature up to 110 ° C, can pass the aging test conditions: 150 ° C, 168 h, and the insulation materials used in the market such products: 90 ° C temperature grade, aging resistance test conditions of 135 ° C, 168h Compared with the product, the temperature resistance and insulation performance of the product are further improved. The above materials have strong high temperature resistance performance, can meet the 90 °C high temperature pressure test, and ensure that the indentation is less than or equal to 50%. At present, the conventional products can only meet the 80 °C high temperature resistance test. In the actual use of the heating process, such as the weight or a certain pressure, the thickness of the insulation and the sheath can be protected from the serious damage, and the thickness of the insulation and the sheath is ensured, thereby further improving the product. Use security. The insulating layer has a thickness of 0.7 to 2.4 mm.
云母带层3,云母带层由煅烧金云母带双层重叠搭盖绕包包制,所述搭盖的搭盖率优选为50%。该煅烧金云母带采购于湖北平安电工材料有限公司,云母带牌号为CP160G32A,厚度为0.14mm。The mica tape layer 3, the mica tape layer is wrapped by a double-layer overlapping lap of calcined phlogopite, and the tiling rate of the lap is preferably 50%. The calcined phlogopite tape was purchased from Hubei Pingan Electrical Materials Co., Ltd., and the mica tape was CP160G32A with a thickness of 0.14 mm.
导体4,导体由多根退火裸铜丝绞合而成。具体地,采用class5或class6细铜丝绞合退火裸铜导体,所述导体规格为1.5mm
2~630mm
2。
Conductor 4, the conductor is formed by stranding a plurality of annealed bare copper wires. Specifically, a bare copper conductor is stranded and annealed by a class 5 or class 6 fine copper wire, and the conductor has a specification of 1.5 mm 2 to 630 mm 2 .
上述软电缆挤包护套厚度标称值T应按如下公式进行计算:The nominal value of the thickness of the above-mentioned soft cable extrusion sheath should be calculated according to the following formula:
T=0.035D+1.0T=0.035D+1.0
D---挤包护套前电缆的假设直径,单位为毫米(mm)(见IEC 60502-1附录A)按上式计算出的数值应修约到0.1mm(见IEC 60502-1附录B)单芯电缆护套的标称厚度应不小于1.4mm,多芯电缆护套的标称厚度应不小于1.8mm。护套的最薄点t要求如下:t≥0.85T-0.1mm。D---The assumed diameter of the cable before the sheath is sheathed, in millimeters (mm) (see Appendix A of IEC 60502-1). The value calculated according to the above formula should be repaired to 0.1 mm (see IEC 60502-1 Appendix B). The nominal thickness of the single-core cable jacket shall be not less than 1.4 mm, and the nominal thickness of the multi-core cable jacket shall be not less than 1.8 mm. The thinnest point t of the sheath is required to be as follows: t ≥ 0.85 T - 0.1 mm.
上述电缆的耐火温度高达1050℃,已经无限接近铜的熔点,即使在大型火灾温度超过950℃且低于铜的熔点时,该电缆仍能有效发挥其作用,极大的提高了使用的安全性,保障了人员的生命安全。The cable has a fire resistance temperature of up to 1050 ° C, which is infinitely close to the melting point of copper. Even when the large fire temperature exceeds 950 ° C and is lower than the melting point of copper, the cable can effectively play its role, greatly improving the safety of use. To protect the safety of personnel.
使用特性:电缆的额定工作电压为0.6/1(1.2)kV、电缆导体的长期工作温度小于等于110℃、电缆敷设时,环境温度不低于0℃、电缆的最小弯曲半径可达到5倍电缆外径值。Use characteristics: the rated working voltage of the cable is 0.6/1 (1.2) kV, the long-term working temperature of the cable conductor is less than or equal to 110 °C, the ambient temperature is not lower than 0 °C when the cable is laid, and the minimum bending radius of the cable can reach 5 times the cable. Outer diameter value.
上述实施例不以任何方式限制本发明,凡是采用等同替换或等效变换的方式获得的技术方案均落在本发明的保护范围内。The above embodiments are not intended to limit the invention in any way, and all the technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (6)
- 一种低烟无卤耐火软电缆,由外向内依次包括护套层、绝缘层、云母带层和导体,其特征在于:所述护套层材料为耐高温达110℃的环保型低烟无卤聚烯烃材料,所述绝缘层的材料为耐高温达110℃的交联聚乙烯绝缘材料,所述云母带层由煅烧金云母带双层重叠搭盖绕包包制,所述导体由多根退火裸铜丝绞合而成。A low-smoke halogen-free fire-resistant flexible cable comprising a sheath layer, an insulating layer, a mica tape layer and a conductor from the outside to the inside, wherein the sheath layer material is environmentally friendly low-smoke without high temperature up to 110 ° C a halogenated polyolefin material, the material of the insulating layer is a crosslinked polyethylene insulating material with a high temperature resistance up to 110 ° C, and the mica tape layer is wrapped by a double layer of overlapping layers of calcined gold mica tape, the conductor is composed of The root is annealed and bare copper wire is stranded.
- 根据权利要求1所述的一种低烟无卤耐火软电缆,其特征在于:所述搭盖的搭盖率为50%。A low-smoke, halogen-free fire-resistant flexible cable according to claim 1, wherein the hood has a tiling rate of 50%.
- 根据权利要求1所述的一种低烟无卤耐火软电缆,其特征在于:所述电缆的耐火最高温度为1050℃,时长120分钟。A low-smoke halogen-free fire-resistant flexible cable according to claim 1, wherein the cable has a maximum fire-resistance temperature of 1,050 ° C and a duration of 120 minutes.
- 根据权利要求1所述的一种低烟无卤耐火软电缆,其特征在于:所述绝缘层厚度为0.7~2.4mm。A low-smoke halogen-free fire-resistant flexible cable according to claim 1, wherein said insulating layer has a thickness of 0.7 to 2.4 mm.
- 根据权利要求1所述的一种低烟无卤耐火软电缆,其特征在于:所述导体规格为1.5mm 2~630mm 2。 A low-smoke halogen-free fire-resistant flexible cable according to claim 1, wherein said conductor has a specification of 1.5 mm 2 to 630 mm 2 .
- 根据权利要求1所述的一种低烟无卤耐火软电缆,其特征在于:所述电缆的最小弯曲半径为5D,D为电缆外径。A low-smoke halogen-free fire-resistant flexible cable according to claim 1, wherein the cable has a minimum bending radius of 5D and D is an outer diameter of the cable.
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