电源母线为二根平行绝缘铜线，在内绝缘层上缠绕电热丝，并将电热丝每隔一定距离与母线连接，形成连续并联电阻。母线通电后，各并联电阻发热，因而形成一条连续的加热带。

Power bus wire is two parallel insulative copper wires. Heating threads are wound around the inner jacket insulation layer. The heating thread is connecting with alternate bus wires at specific intervals forming heating zone. The twin bus wires supply voltage along the entire length of heating cable.

产品特点及应用场合Product Characteristics and Applications

恒功率电热带单位长度的发热量恒定，使用的电热带越长，输出的功率越大。该电热带在现场能按实际需要长度任意剪切，并具有柔软性，可以紧贴管道表面敷设。电热带外层的编织层能起到传热和散热的作用，提高电热带的整体强度，同时还能用作安全接地线。

The heat output per length unit out of the constant wattage heating cable is fixed and constant. The longer the heating cable is used, the greater the power is output. The electric heating belt can be cut flexibly according to the actual needs. And it is flexible and can be installed closely on the pipe surface. The braided layer can execute the function of heat transmitting and radiating, to enhance the strength of the heating cable. It can also be electrical grouding.

本电热带适用于管道、阀门、泵体的伴热、防冻和保温， 或者维持仪表管线的工艺温度，如：

FDP2-J3 Single phase constant heating cable is ideal for use maintaining fluid flow in pipe, valve and pump or maintain pipeline temperature, Such as:

Ø  用于在正常情况下连续流动的低凝因管线使用，可避免介质因停止流动而凝固；

Low solidity point fluid pipeline

Ø  需要严格控制作业温度的液体管线的伴热和保温（须配用温度控制器）；

Liquid pipeline requires temp-control

Ø  寒冷地区自来水管道及阀门的防冻，排水管、抽水管和冷凝管路的防冻；

Cold-prevention of water pipe and valve, cold-prevention of drain pipe, suction pipe and condenser pipe in cold areas

Ø  沿海井台管道的伴热防冻；

Coastal platform pipe

Ø  一般管线和仪表管线的伴热保温；

Heating and temperature maintenance for pipeline and instruments

Ø  井口采油树伴热（取代水套炉），污水井伴热；

Oil exploit tree of wellhead

Ø  混凝土预制作防冻养护；

Protection from frozen for concrete prefabricated components