(1)产品工作原理Working Principle    JFC 串联型电热带是一种由芯线作发热体的电伴热产品，由于芯线单位长度的电阻和通过的电流均恒定，所以整根电伴热带首尾发热均匀，输出功率恒定。Jfc type series connection heating cable is electric heating trace product which core wires act as heater.As the resistance per unit length and the current are constant,the power output of the whole heating cable from beginning to end is meaning and constant.

(2)产品规格和主要技术特性Product Types and Main Technical Characteristics

表 2-3： JFC-口/3型电热带主要技术参数表Table 2-3: Main Technical Parameters of JFC- 口 /3 Heating Cable型号Type额定电压Rated Voltage(v)额定功率RatedPower(w/m)绝缘电阻Insulation Resistance(MΩ /hm)电气强度Electricity Intensity(v/min)绝缘层材料Insulation Material产品很高耐温Highest Temp-erature(℃)防爆标志ExplosionProof Label介质很高维持温度HighestMaintenance Temperature of Media(℃)加强型ReinforcedJFC-6~30/3J380(660)6~30≥1002750F46200ExeIIT4120JFC-30~50/3J30~50110JFC-6~30/3J6~30≥1003500PFA26090JFC-30-50/3J30~5070

注： 实际选用时应根据管道长度、散热量、工作电压和芯线数，计算芯线截面而定。Note:When actually applying,choose suitable type cable according to the pipe lenght,heat loss,work voltage,number of core wires.and core wire's section areas.

(3)产品应用场合Applications主要适用于长距离和超长距离单一管线的伴热保温，一个电源点很大使用长度为几百米到数千米。Mainly applying to thermal insulation of single long legnth pipe,The longest use length with one power suppply circuit from hundreds meters to thousands meters.

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