EPI HGC‑1 and HGC‑3 Series Constant‑Power Series Heating Cables Expand Long‑Distance Pipeline Thermal Management Capabilities for Global Industrial Projects

Global industrial thermal‑management operators continue to seek reliable heat‑tracing hardware that can handle extended‑run pipeline freeze‑protection and process‑temperature maintenance tasks, where conventional parallel‑resistance heating cables cannot meet circuit‑length constraints. The HGC‑1 and HGC‑3 series‑connected constant‑power heating cables from EPI adopt resistive core conductors as heating elements. Electric current flows through the resistive core wire to generate Joule heat, ensuring stable constant power output per unit length throughout the full cable span, eliminating power‑attenuation issues at remote ends of long circuits.

The multi‑layer mechanical‑insulation structure includes heating conductor, heating‑element insulation, inner protective sheath, metallic braided shielding layer and outer insulating jacket. An optional fluoroplastic outer sleeve over the braid layer provides extra protection for cables exposed to corrosive chemicals or underground‑buried pipeline environments, enhancing service life under harsh field conditions.

Broad‑range rated voltage options cover 220V, 380V, 660V, 1100V, 3300V and 6600V to match diverse global power‑supply specifications. The product portfolio supports maximum maintained temperature of 100℃, maximum exposure withstand temperature of 205℃ and minimum installation temperature down to ‑50℃, and qualifies for installation within Zone 1, Zone 2 hazardous explosive atmospheres for international petrochemical and process‑plant projects.

Special cold‑end connection technology is specified to extend overall cable service life during field assembly. Site technicians strip outer and inner sheaths plus core‑wire insulation, crimp exposed resistive core conductors with cold‑end transition wires via copper terminals, apply 3M tape wrapping while reserving metallic braid for equipment grounding, then apply four‑layer heat‑shrink tubing and heat‑treat for tight terminal sealing. Industry engineers note that series‑type constant‑power heat‑tracing cables require pre‑factory customization according to actual circuit length and cannot be arbitrarily cut on‑site, calling for precise engineering design before project execution.