Apply the rated voltage to the core wire; the current passing through the heating core generates joule heat (Q = 0.24I²RT). A constant-power series heating tape utilizes this heat to保温 (heat preservation) objects requiring companion heating. As the current is consistent throughout, the constant-power series heating tape maintains uniform temperature and consistent power. The structure of the constant-power series heating tape is simple, easy to maintain, and can be powered by a single-point source for lengths up to 3KM. This product must be custom-designed and manufactured based on the pipe length and required power; it cannot be arbitrarily cut on-site.
Constant Power Series Resistance Heater Structural Diagram


1. Constant Power Series Electric Heat Tape Model Description
RDC(Q)-1/2/3-J3/J4-□
□: Heating core single-core cross-section mm
J3/J4: Insulation Code: J3: 205℃; J4: 260℃
1/2/3: Quantity of heating cores
Q: Reinforced Outer Sheath
RDC: Constant High Power Series Resistance Heating Cable
2. Main Parameters of Constant Power Series Electric Heating Tape
| Operating Voltage | 110~660~1100V |
| Single-core power | ≤18W/m |
| Dielectric Strength | 2750V/min |
| Insulation Grade | ≥100MΩ/km |
| Temperature Resistance Grade | F46-205℃;FPA-260℃ |
| Maintain temperature | 0~180℃ |
| Ingress Protection (IP) Rating | IP54 |
| Intrinsically Safe Rating | Exe II C T4 Gb |
| Installation Temperature | ≥-40℃ |
| Bend Radius | ≥5b |
3. Application Sites:
Constant power series heating tapes are suitable for anti-freezing and anti-foaming of pipelines and equipment in the following situations:
·Safe Zone;
· Hazardous Zones 1 & 2; Zones 21 & 22;
·Humid, salt fog environment; corrosive conditions.





























