JPB type parallel connection high-temperature electric heating cable has two types:single phase and three phase.Theirs are made of nickel-plated stranded copper wires and the braided layers are made of nickel plated copper threads.And moreover the insulation and jacket layers are extruded by PFA.which can be used up to 260℃.
（2）產品工作原理、特點和適用場所
Working Principle, Characteristics and Applications
The working principle of JPB parallel connection high temperature cable is the same as JFB parallel connection electric heating cable. It can maintenance media temperature in pipes below 190℃.It is especially suitable to the thermal insulation of bitumen,heavy oil.residual oil and high-visconsity oils pipelines.It is also applicable to thermal insulation of steam cleaning pipes under 260℃.
Note:The non-standard tsingle phase type high temperature cable of rated voltage 380Vis marked by "JPB-口/2（380V）".The main technical parameters are the same as those ofsingle-
phase cable in same wattage, except that the maximal use length is
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