Constant Wattage Heating Cable For Oil Well

Summary

The output power of constant wattage heating cable is not subject to the change of environment, Its use length is proportional to the power.

It needs to be equipped with explosion-proof temperature controller and control box to control the medium temperature, It is widely used in oil, chemical, metallurgical and other industries for anti freezing, anticoagulant, anticoagulant, heat preservation and heating.

The constant wattage heating cable is divided into parallel type and series type, Parallel constant wattage heating cable is connected by multiple heating nodes in parallel across the entire length. It can be shared to use according to actual length, but at least reserve one heating node. Series type is suitable for the case where the circuit length exceeds the upper limit of the parallel constant wattage cable.

Application
Parallel constant wattage heating cable can be used for pipe and equipment freeze protection and process temperature maintenance requiring high power output or high temperature exposure. This type provide an economical alternative to self regulating heating cable but requires more skill for installation and more advanced control and monitor system. Constant wattage heating cables can provide process temperature maintenance up to 150°C and can withstand exposure temperatures up to 205°C with power on.

Working principle
Two paralleled stranded copper wire as the bus wires with insulation layer FEP, then wrap the nickel-chromium alloy as the heating wire connect with bus wires at regular intervals, form the parallel resistance. Finally covered with insulation jacket FEP. When the bus wires power on, each parallel resistance begin to heat, thus form a continuous heating cable.

Technical Data:
Rated voltage:220V           

Max exposure temperature:205°c
Normality insulation resistance:≥20M ohm       

Protection level:IP54
Dielectric strength:2000V 50Hz/1min
Insulation material: FEP           
Approvals: CE, ATEX