1)JFC串聯(lián)型電熱帶產(chǎn)品工作原理 
 Working Principle 
   　 JFC 串聯(lián)型電熱帶是一種由芯線作發(fā)熱體的電伴熱產(chǎn)品，由于芯線單位長(zhǎng)度的電阻和通過的電流均恒定，所以整根電伴熱帶首尾發(fā)熱均勻，輸出功率恒定。
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)JFC串聯(lián)型電熱帶產(chǎn)品規(guī)格和主要技術(shù)特性
Product Types and Main Technical Characteristics

表 2-3： JFC-口/3型電熱帶主要技術(shù)參數(shù)表 
Table 2-3: Main Technical Parameters of JFC- 口 /3 Heating Cable 
 

　　★注： 實(shí)際選用時(shí)應(yīng)根據(jù)管道長(zhǎng)度、散熱量、工作電壓和芯線數(shù)，計(jì)算芯線截面而定。
 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)JFC串聯(lián)型電熱帶產(chǎn)品應(yīng)用場(chǎng)合
Applications 
　　JFC串聯(lián)型電熱帶主要適用于長(zhǎng)距離和超長(zhǎng)距離單一管線的伴熱保溫，一個(gè)電源點(diǎn)Z大使用長(zhǎng)度為幾百米到數(shù)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.