Electric tracing [1] electric tracing since 1971 into the application, self-limiting electric heating cables has become the world's most common type of electric tracing. They can be widely applied to objects in the pipeline transportation of liquid and antifreeze tank insulation, to maintain process temperature, heating roads, ramps, crosswalks, roof and floors. electric tracing
self-limiting electric heating cables are distributed between the two conductive core from heating the semiconductor polymer material, within its outer sheath from the polymer, alloy shielding and polymer outer sheath composition. When a current is passed, with tropical temperatures with the electric, cable resistance also increased. As a result, the output power of electric tracing with its temperature rises. As with the electric heating power throughout with tropical temperature on the heating performance of the semiconductor core material and heating to a temperature high / low temperature trend of the variable resistor opposite. Self-limiting electric heating cables will not overheat even if the overlap. No special design, self-limiting electric heating cables can be any cut in its work in the field to exactly match the length of the actual laying of pipe length. Our company specializes in production, without special tools, installation is very simple. Cable structure: 1, copper wire: 7 × 0.50,19 × 0.32,19 × 0.41 2, conductive plastic layer: common PTC, flame retardant PTC, fluoride PTC 3, insulating layer: modified polyolefin, flame-retardant polyolefin , fluorinated polyolefins, perfluorinated material 4, the shield: Tinned copper wire round, covering 80% of density 5, the jacket layer: modified polyolefin, flame retardant polyolefins, fluorinated polyolefins, perfluorinated materials 3 construction temperature: Minimum: -5 ℃ 4, thermal stability: from 15 ℃ to 99 ℃ after 300 times cycle back and forth between the cable heat maintained at 90%. 5, bending radius: 20 ℃ room temperature and low temperature for the 25.4mm -30 ℃ to 35.0mm 6, insulation resistance: cable length 100m, ambient temperature 75 ℃, with 2,500 VDC for 1 minute shake table shake test, insulation resistance (wire and shielding) minimum 120MΩ. 7, the starting current (10 ℃) per meter 0.4A 8, part installation, see note 9, The maximum length: not more than 100 meters Description Model Nominal power (W / m .10 ℃) to maintain the highest temperature (℃ ) to withstand the highest temperature (℃) Maximum surface temperature (℃) minimum installation temperature (℃) low-temperature universal electric tracing DXW 10-35 ≤ 70 105 ≤ 80 -40 Wide temperature electric tracing DXKW 10-35 ≤ 70 105 ≤ 80-40 in the temperature universal electric tracing ZXW 15-45 ≤ 105 135 ≤ 110 -40 in the temperature Wide electric tracing ZXKW 15-45 ≤ 105 135 ≤ 110 -40 universal high-temperature electric tracing GXW 25-70 ≤ 135 155 Wide temperature ≤ 140 -40 electric tracing GXKW 25-70 ≤ 135 155 ≤ 140 -40 Self-heating temperature control with tropical CNXW 10-25 ≤ 70 105 ≤ 80 -40 editing power with this paragraph the basic structure and classification of tropical Classification of materials based on polymer PTC temperature of the composition is different from the temperature heating cable is divided into two types of low temperature and high temperature type. Common market are the polyolefin to the substrate temperature of 65 ℃ and the level of heating cables to fluorinated materials for the substrate of 110 ℃ and 150 ℃ heating cables. The temperature here is defined as the level of heating cables can effectively apply the maximum ambient temperature (MAXIMUMPIPE MAINTENANCE TEMPERATURE). The cable can also be understood as an effective long-term stable applications and the maximum power output of the heating temperature, exceeds the temperature rating, on the one hand increases the resistance of the cable itself, the output power is small, the actual heating efficiency is very low. On the other hand, over-temperature long-term use of the cable properties such as: PTC characteristics, deterioration or decay heat power, etc., will reduce cable life and reliability. But more than short-term intermittent exposure to extreme temperature, the temperature environment is also possible. Therefore, in addition to the temperature rating, self-regulating heating cable, there is another temperature level. If the temperature rating for the cable 65 ℃, the temperature rating is 85 ℃, 110 ℃ temperature rating for the cable, is 130 ℃, 150 ℃ and for cable, compared to 230 ℃. However, the effective output power of the cable at this time has been close to zero. As the literature little information, many people are self-regulating heating cables have a wrong understanding of the temperature level, that it refers to the maximum surface temperature of the heating cable, so there 45.65,85, and 105 ℃ heating temperature grade polyolefin statement . In fact, the output power of the cable and the environment temperature, the surface temperature of the cable and test the ambient temperature, holding the state are closely linked. Thus, the surface temperature to define the self-regulating heating cable temperature rating is unscientific, it is not accurate. We need to remember is that, for the polyolefin to the substrate heating cables its maximum continuous use temperature should not exceed 65 ℃. Output power by heating self-regulating heating cable classification output power is defined as 10 degrees Celsius ambient temperature conditions, the output power per unit length of cable. Classified according to the heating power output, since the low temperature heating cables are three types of high school. In general, the heating power is less than 35 W / m for low-power heating cables; heating power is greater than 35 W / m and less than 70 W / m for the power of the heating cable; and heating more than 65 W / m for high-power heating cables. Application areas classified by general type heating cable: is made of copper wire, polymer PTC material and composed of single-retardant sheath heating cable. Mainly used in pipe network under the general situation of the heating or heating. Ex-enhanced heating cable: cable in general and then the outer layer of metal compound, this structure can effectively eliminate static electricity and the cable against external mechanical touch environment. Mainly used in places with explosion-proof requirements. Enhanced anti-corrosion proof: The structure of the cable is enhanced in the explosion-proof heating cable outer layer of metal mesh, and then a layer of fluorine-containing compound materials. Heating cables with this structure can effectively prevent and resist static electricity, mechanical impact and corrosive media. Mainly used in bad environment or place where inflammable and explosive materials. Use classification by general type cable heating cable: This is a two-core structure of the heating cables. By the external application of two parallel metal wires and flame retardant polymer PTC material or metal sheath and jacket posed by fluoride materials. Due to the conductor diameter and the impact of voltage drop along the length of this cable to the length not more than 200 meters. Long-type heating cable which is a special structure of the five or six core-core heating cable. In addition to the polymer PTC material deposited in two parallel lines package, but also other fabrics in the same direction with 3-5 root sheath of metal wires, plus the metal armor. For the transmission of electricity. This particular structure, the longest continuous use of the cable length should not exceed 1,100 meters, which can be used in heating oil and gas channel heating oil underground. Safe heating cable? This is a three-core heating cable. In the cable, flame retardant jacket in the other direction along the length of the cloth a surveillance wire. Along the wire at any time to monitor the output power of abnormal changes, over-current conditions, local damage such as timely delivery of information to a central control room, easy to keep abreast of the situation along the heating and ensure safe and reliable operation of the cable. Classification by applying voltage low voltage type: is applicable in the 12-36V voltage range between the heating cables. Such cables generally lower heating power, continuous use longer than 10 meters. Voltage required strict compliance with requirements, otherwise, can lead to cable fire and other accidents. The major areas of application and travel for civilian health care products such as heated seats. In voltage: the voltage is applied between the 100-660V heating cable. We generally say that since the temperature heating cables are in this category cable. In practice, 120 and 250V cables are interchangeable, but the 120V heating cable is usually the maximum length of continuous use 240V half. Continuous application of this type of cable length is usually not more than 200 meters. ? High voltage cable: the voltage is applied between the 380-650V heating cable. They mainly referred to the 5-6 front core heating cable. Continuous application length is usually greater than 500 meters.
self-limiting electric heating cables are distributed between the two conductive core from heating the semiconductor polymer material, within its outer sheath from the polymer, alloy shielding and polymer outer sheath composition. When a current is passed, with tropical temperatures with the electric, cable resistance also increased. As a result, the output power of electric tracing with its temperature rises. As with the electric heating power throughout with tropical temperature on the heating performance of the semiconductor core material and heating to a temperature high / low temperature trend of the variable resistor opposite. Self-limiting electric heating cables will not overheat even if the overlap. No special design, self-limiting electric heating cables can be any cut in its work in the field to exactly match the length of the actual laying of pipe length. Our company specializes in production, without special tools, installation is very simple. Cable structure: 1, copper wire: 7 × 0.50,19 × 0.32,19 × 0.41 2, conductive plastic layer: common PTC, flame retardant PTC, fluoride PTC 3, insulating layer: modified polyolefin, flame-retardant polyolefin , fluorinated polyolefins, perfluorinated material 4, the shield: Tinned copper wire round, covering 80% of density 5, the jacket layer: modified polyolefin, flame retardant polyolefins, fluorinated polyolefins, perfluorinated materials 3 construction temperature: Minimum: -5 ℃ 4, thermal stability: from 15 ℃ to 99 ℃ after 300 times cycle back and forth between the cable heat maintained at 90%. 5, bending radius: 20 ℃ room temperature and low temperature for the 25.4mm -30 ℃ to 35.0mm 6, insulation resistance: cable length 100m, ambient temperature 75 ℃, with 2,500 VDC for 1 minute shake table shake test, insulation resistance (wire and shielding) minimum 120MΩ. 7, the starting current (10 ℃) per meter 0.4A 8, part installation, see note 9, The maximum length: not more than 100 meters Description Model Nominal power (W / m .10 ℃) to maintain the highest temperature (℃ ) to withstand the highest temperature (℃) Maximum surface temperature (℃) minimum installation temperature (℃) low-temperature universal electric tracing DXW 10-35 ≤ 70 105 ≤ 80 -40 Wide temperature electric tracing DXKW 10-35 ≤ 70 105 ≤ 80-40 in the temperature universal electric tracing ZXW 15-45 ≤ 105 135 ≤ 110 -40 in the temperature Wide electric tracing ZXKW 15-45 ≤ 105 135 ≤ 110 -40 universal high-temperature electric tracing GXW 25-70 ≤ 135 155 Wide temperature ≤ 140 -40 electric tracing GXKW 25-70 ≤ 135 155 ≤ 140 -40 Self-heating temperature control with tropical CNXW 10-25 ≤ 70 105 ≤ 80 -40 editing power with this paragraph the basic structure and classification of tropical Classification of materials based on polymer PTC temperature of the composition is different from the temperature heating cable is divided into two types of low temperature and high temperature type. Common market are the polyolefin to the substrate temperature of 65 ℃ and the level of heating cables to fluorinated materials for the substrate of 110 ℃ and 150 ℃ heating cables. The temperature here is defined as the level of heating cables can effectively apply the maximum ambient temperature (MAXIMUMPIPE MAINTENANCE TEMPERATURE). The cable can also be understood as an effective long-term stable applications and the maximum power output of the heating temperature, exceeds the temperature rating, on the one hand increases the resistance of the cable itself, the output power is small, the actual heating efficiency is very low. On the other hand, over-temperature long-term use of the cable properties such as: PTC characteristics, deterioration or decay heat power, etc., will reduce cable life and reliability. But more than short-term intermittent exposure to extreme temperature, the temperature environment is also possible. Therefore, in addition to the temperature rating, self-regulating heating cable, there is another temperature level. If the temperature rating for the cable 65 ℃, the temperature rating is 85 ℃, 110 ℃ temperature rating for the cable, is 130 ℃, 150 ℃ and for cable, compared to 230 ℃. However, the effective output power of the cable at this time has been close to zero. As the literature little information, many people are self-regulating heating cables have a wrong understanding of the temperature level, that it refers to the maximum surface temperature of the heating cable, so there 45.65,85, and 105 ℃ heating temperature grade polyolefin statement . In fact, the output power of the cable and the environment temperature, the surface temperature of the cable and test the ambient temperature, holding the state are closely linked. Thus, the surface temperature to define the self-regulating heating cable temperature rating is unscientific, it is not accurate. We need to remember is that, for the polyolefin to the substrate heating cables its maximum continuous use temperature should not exceed 65 ℃. Output power by heating self-regulating heating cable classification output power is defined as 10 degrees Celsius ambient temperature conditions, the output power per unit length of cable. Classified according to the heating power output, since the low temperature heating cables are three types of high school. In general, the heating power is less than 35 W / m for low-power heating cables; heating power is greater than 35 W / m and less than 70 W / m for the power of the heating cable; and heating more than 65 W / m for high-power heating cables. Application areas classified by general type heating cable: is made of copper wire, polymer PTC material and composed of single-retardant sheath heating cable. Mainly used in pipe network under the general situation of the heating or heating. Ex-enhanced heating cable: cable in general and then the outer layer of metal compound, this structure can effectively eliminate static electricity and the cable against external mechanical touch environment. Mainly used in places with explosion-proof requirements. Enhanced anti-corrosion proof: The structure of the cable is enhanced in the explosion-proof heating cable outer layer of metal mesh, and then a layer of fluorine-containing compound materials. Heating cables with this structure can effectively prevent and resist static electricity, mechanical impact and corrosive media. Mainly used in bad environment or place where inflammable and explosive materials. Use classification by general type cable heating cable: This is a two-core structure of the heating cables. By the external application of two parallel metal wires and flame retardant polymer PTC material or metal sheath and jacket posed by fluoride materials. Due to the conductor diameter and the impact of voltage drop along the length of this cable to the length not more than 200 meters. Long-type heating cable which is a special structure of the five or six core-core heating cable. In addition to the polymer PTC material deposited in two parallel lines package, but also other fabrics in the same direction with 3-5 root sheath of metal wires, plus the metal armor. For the transmission of electricity. This particular structure, the longest continuous use of the cable length should not exceed 1,100 meters, which can be used in heating oil and gas channel heating oil underground. Safe heating cable? This is a three-core heating cable. In the cable, flame retardant jacket in the other direction along the length of the cloth a surveillance wire. Along the wire at any time to monitor the output power of abnormal changes, over-current conditions, local damage such as timely delivery of information to a central control room, easy to keep abreast of the situation along the heating and ensure safe and reliable operation of the cable. Classification by applying voltage low voltage type: is applicable in the 12-36V voltage range between the heating cables. Such cables generally lower heating power, continuous use longer than 10 meters. Voltage required strict compliance with requirements, otherwise, can lead to cable fire and other accidents. The major areas of application and travel for civilian health care products such as heated seats. In voltage: the voltage is applied between the 100-660V heating cable. We generally say that since the temperature heating cables are in this category cable. In practice, 120 and 250V cables are interchangeable, but the 120V heating cable is usually the maximum length of continuous use 240V half. Continuous application of this type of cable length is usually not more than 200 meters. ? High voltage cable: the voltage is applied between the 380-650V heating cable. They mainly referred to the 5-6 front core heating cable. Continuous application length is usually greater than 500 meters.
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