JFC 型恒功率串聯電熱帶
　　JFC 串聯型電熱帶是一種由芯線作發熱體的電伴熱產品，由于芯線單位長度的電阻和通過的電流均恒定，所以整根電伴熱帶首尾發熱均勻，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)產品規格和主要技術特性
　　Product Types and Main Technical Characteristics
　　表 2-3： JFC-口/3型電熱帶主要技術參數表
　　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	產品最 高耐溫 Highest Temp- erature (℃)	防爆 標志 Explosion Proof Label	介質最 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： 實際選用時應根據管道長度、散熱量、工作電壓和芯線數，計算芯線截面而定。
　　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)產品應用場合
　　Applications
　　JFC 型恒功率串聯電熱帶
　　主要適用于長距離和超長距離單一管線的伴熱保溫，一個電源點最大使用長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.