JFC 型恒功率串聯(lián)電熱帶
　　JFC 串聯(lián)型電熱帶是一種由芯線(xiàn)作發(fā)熱體的電伴熱產(chǎn)品，由于芯線(xiàn)單位長(cháng)度的電阻和通過(guò)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)產(chǎn)品規格和主要技術(shù)特性
　　Product Types and Main Technical Characteristics
　　表 2-3： JFC-口/3型電熱帶主要技術(shù)參數表
　　Table 2-3: Main Technical Parameters of JFC- 口 /3 Heating Cable

型號 Type	額定 電壓 Rated Voltage (v)	額定 功率 Rated Power (w/m)	絕緣 電阻 Insulation Resistance (MΩ /hm)	電氣 強度 Electricity Intensity (v/min)	絕緣層 材料 Insulation Material	產(chǎn)品最 高耐溫 Highest Temp- erature (℃)	防爆 標志 Explosion Proof Label	介質(zhì)最 高維持 溫度 Highest Maintenance Temperature of Media (℃)
加強型 Reinforced
JFC-6~30/3J	380 (660)	6~30	≥100	2750	F46	200	ExeIIT4	120
JFC-30~50/3J		30~50						110
JFC-6~30/3J		6~30	≥100	3500	PFA	260		90
JFC-30-50/3J		30~50						70

　　★注： 實(shí)際選用時(shí)應根據管道長(cháng)度、散熱量、工作電壓和芯線(xiàn)數，計算芯線(xiàn)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)產(chǎn)品應用場(chǎng)合
　　Applications
　　JFC 型恒功率串聯(lián)電熱帶
　　主要適用于長(cháng)距離和超長(cháng)距離單一管線(xiàn)的伴熱保溫，一個(gè)電源點(diǎn)最大使用長(cháng)度為幾百米到數千米。
　　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.