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Product

Industrial heating & heat-tracing cablesRDP / HDP Zone-Parallel230 V & 400 V · 10–60 W/mMaintain +205 °C · Exp +250 °C

Parallel Constant-Wattage Heating Cable230 / 400 Vac zone-parallel NiCr resistance trace heating cable, 10–60 W/m

Industrial zone-parallel constant-wattage heating cable (RDP / HDP) to IEC/IEEE 60079-30-1, IEC 62395-1 and IEEE 515, with a NiCr 80/20 heating coil wound over 2.5–3.3 mm² fluoropolymer-insulated bus wires for +150 to +205 °C maintain.

Flame-retardant
Oil-resistant
Outdoor & humid
Approved
Order designation
30HDP2-PFA · 230 V
Output
30 W/m
Zone length
1.00 m
Max circuit
145 m
Max maintain
205 °C
All sizes (14)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Linear output
10–60 W/m
Constant output independent of pipe T
Maintain temp.
+150 to +205 °C
RDP +150 °C (FEP) · HDP +205 °C (PFA)
Max. exposure T
+200 to +250 °C
HDP PFA grade rated to +250 °C power-off
Supply voltage
230 / 400 Vac
Single-phase 230 V or 400 V phase-phase
Bus conductors
2 × 2.5–3.3 mm²
Heating zone pitch 0.5 m to 1.5 m
Min. bend radius
30 mm
Avoid bending directly on contact nodes

Typical values for this cable type, based on IEC/IEEE 60079-30-1 & IEEE 515 — confirmed in the datasheet and quotation for your order.

Application fit

Is Parallel Constant-Wattage Heating Cable right for your machine?

Zero-inrush, uniform-output zone-parallel constant-wattage heating tape for high-temperature process pipes, vessels and transfer lines requiring exact W/m control up to +205 °C.

Fixed installation

Suitable

Primary duty — fixed straight-run pipe, tank and column heat tracing controlled by surface RTD or thermostat.

Offshore platform & shipboard deck trays

Suitable

Extruded PFA/FEP outer sheath resists offshore salt spray, sour gas condensate, acids and hydrocarbon washdown.

Furnace, kiln & high-temp zone

Not suitable

Fluoropolymer HDP insulation is limited to +250 °C exposure; never self-overlap or use above +250 °C.

Use MI Heating Cable

Motorised monospiral reel

Not suitable

Fixed pipe tracing cable with welded zone nodes; unsuitable for reeling drums.

Use (N)SHTÖU Reeling

Trailing & towing

Not suitable

Designed exclusively for fixed routing under thermal cladding, not mobile trailing duty.

Use H07RN-F Rubber
Typical machinesRefinery heavy-oil, bitumen & sulphur transfer pipingChemical & polymer reactor feed lines up to +205 °CSteam-purged process headers & instrumentation impulse tubesTank-farm manifold & loading-arm freeze/viscosity tracingPower plant flue-gas desulphurisation & ash-hopper heatingOffshore topside process modules & FPSO decks

Construction

Layer by layer

Two parallel 2.5 mm² or 3.3 mm² (12 AWG) stranded tinned/nickel-plated copper bus wires are individually insulated with FEP, PFA or silicone rubber; a nichrome (NiCr 80/20) resistance heating wire is spirally wound over the pair and welded to alternating bus conductors every 0.5–1.5 m to form independent parallel heating zones, then encapsulated in a fluoropolymer inner jacket, tinned-copper earthing braid and PFA/FEP outer sheath.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Parallel tinned / nickel-plated copper bus wires2 × 2.5 mm² or 3.3 mm² (12 AWG) stranded tinned or nickel-plated copper bus conductorsIEC 60228 / ASTM B33 / B355
2Primary bus-wire insulation with zone notchesMelt-extruded FEP (RDP), PFA (HDP) or high-temp silicone bus insulation with staggered contact windows every 0.5–1.5 mIEC 60079-30-1
3Spirally wound NiCr 80/20 resistance heating wireNickel-chromium (80/20 NiCr) resistance alloy filament helically wound and metallurgically bonded to alternating bus nodesIEC 60079-30-1 / IEEE 515
4Inner fluoropolymer dielectric jacketExtruded FEP or PFA inner electrical insulation barrier isolating the NiCr heating coil from the earth screenIEC 60079-30-1
5Tinned-copper protective earthing braidClosely woven tinned/nickel-plated copper braid (≥ 70 % coverage) for fault current return and mechanical armouringIEC 60079-30-1 Clause 4.4
6Fluoropolymer (PFA / FEP) outer sheathHigh-temperature, chemically inert extruded FEP (RDP +200 °C) or PFA (HDP +250 °C) outer protective jacketIEC 60079-30-1 / IEEE 515

RDP Series · FEP Insulated (10–50 W/m · 230 V / 400 V)

Maintain up to +150 °C · Max exposure +200 °C · 2.5 mm² SnCu bus + NiCr zone element + FEP insulation + SnCu braid + FEP outer jacket

HDP Series · PFA Insulated (10–60 W/m · 230 V / 400 V)

Maintain up to +205 °C · Max exposure +250 °C · 3.3 mm² (12 AWG) NiCu bus + NiCr zone element + PFA insulation + NiCu/SnCu braid + PFA outer sheath

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC/IEEE 60079-30-1 & IEEE 515. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated supply voltage
230 Vac single-phase & 400 Vac phase-to-phase
Linear power output
10, 15, 20, 30, 40, 50 & 60 W/m (constant)
Cold-start inrush
Zero inrush current rise (1.0 × steady state)
Dielectric withstand
2.5 kV AC for 1 min (bus to metallic braid)

Thermal

Max. maintain temp.
RDP (FEP): +150 °C · HDP (PFA): +205 °C
Max. exposure temp.
RDP: +200 °C · HDP: +250 °C (power off)
Min. installation T
−60 °C (fluoropolymer FEP / PFA construction)
Temperature class
T4 (+135 °C), T3 (+200 °C) or T2 (+300 °C)

Mechanical

Bus wire cross-section
2 × 2.5 mm² (RDP) or 2 × 3.3 mm² / 12 AWG
Heating zone length
0.5 m to 1.5 m between bus contact nodes
Min. bending radius
30 mm (avoid bending on contact nodes)
Overlap rule
Do not overlap; maintain ≥ 25 mm clearance

Resistance

Flame retardance
IEC 60332-1-2 & UL VW-1 flame retardant
Chemical resistance
Inert to strong acids, alkalis, oils & steam
Water & ingress
Non-hygroscopic PFA/FEP wall; IP66/IP67 kits
UV & weathering
Permanent UV & ozone immunity (FEP / PFA)

Reference standards

Applicable standards
IEC/IEEE 60079-30-1, IEC 62395-1 & IEEE 515
Temperature control
Requires thermostat / RTD + overtemp limiter
Earth fault device
30 mA RCD / GFPD per IEC 60079-30-2
RoHS & REACH
RoHS 2011/65/EU & REACH compliant materials

Identification

Node marking
Surface indentation / print mark at each node
Sheath colours
Amber/Translucent Red (HDP PFA) · Blue (RDP)
Outer legend
TEBAOFLEX · RDP/HDP · W/m · Vac · Zone mark
Customs tariff (HS)
8544.49 (or 8516.80 electric heating cables)

Sizes

14 zone-parallel constant-wattage configurations across RDP (FEP) & HDP (PFA) (230 V & 400 V)

Linear wattage, supply voltage, bus conductor cross-section, heating zone length, max circuit length, thermal limits and dimensions.

Power, zone pitch, circuit length & dimensions
Model designationRated
Vac		Output
W/m		Bus wire
mm²		Zone length
m		Max circuit
m		Max maintain
°C		Max exposure
°C		Width × Thick.
mm		Mass ≈
kg/km		Enquiry
10RDP2-FEP · 230 V230 Vac102.51.002201502009.6 × 6.4145
15RDP2-FEP · 230 V230 Vac152.51.001801502009.6 × 6.4146
20RDP2-FEP · 230 V230 Vac202.51.001551502009.6 × 6.4148
30RDP2-FEP · 230 V230 Vac302.51.001251502009.8 × 6.6152
40RDP2-FEP · 230 V230 Vac402.50.751081502009.8 × 6.6155
50RDP2-FEP · 230 V230 Vac502.50.759515020010.0 × 6.8158
10HDP2-PFA · 230 V230 Vac103.31.2025520525010.4 × 7.0172
20HDP2-PFA · 230 V230 Vac203.31.0018020525010.4 × 7.0175
30HDP2-PFA · 230 V230 Vac303.31.0014520525010.6 × 7.2178
40HDP2-PFA · 230 V230 Vac403.30.7512520525010.6 × 7.2182
50HDP2-PFA · 230 V230 Vac503.30.7511020525010.8 × 7.4186
60HDP2-PFA · 230 V230 Vac603.30.509520525010.8 × 7.4190
30HDP4-PFA · 400 V400 Vac303.31.5025020525010.6 × 7.2180
50HDP4-PFA · 400 V400 Vac503.31.2019020525010.8 × 7.4188
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Cut only midway between contact node indentations; up to one trailing dead zone (0.5–1.5 m) at the end termination remains unheated.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
AC dielectric voltage withstand test2.5 kV RMS AC for 1 min between bus conductors and metallic earth braidEvery reel
Zone resistance & linear wattage checkLinear output W/m and bus-to-element contact node continuity verified across all zonesEvery reel
Sample tests
Cold impact, deformation & mandrel bend testMechanical crush (1,500 N), cold impact at −60 °C and 30 mm mandrel flexingProduction lot
250 °C fluoropolymer thermal aging & node cyclingExtended thermal cycling of welded NiCr contact nodes and PFA dielectric integrityType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

RDP / HDP Zone-ParallelCE · LVDRoHS · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · [RDP/HDP MODEL] · [W/m] · [230V/400V] · PFA/FEP · IEC/IEEE 60079-30-1 · NODE MARK
Delivery form
Continuous fluoropolymer-sheathed reels or pre-terminated sets
Lengths
Cut to length in multiples of the 0.5–1.5 m heating zone
Certificate
EN 10204 3.1 inspection certificate with every dispatch
Quote response
Engineering specification and quote within 2 business hours

Technical documents

Downloads

PDFParallel Constant-Wattage Heating Cable – technical datasheet14 sizes · construction, technical data, approvalsXLSXParallel Constant-Wattage Heating Cable spec data (Excel)All 14 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

How does a zone-parallel constant-wattage heating cable work?
Two insulated 2.5–3.3 mm² copper bus wires run in parallel down the cable. A nichrome (NiCr 80/20) resistance heating wire is spirally wound around the insulated bus pair and metallurgically bonded to alternating bus conductors every 0.5 m to 1.5 m. Each segment between contact nodes acts as an independent parallel resistor delivering uniform W/m.
When should I choose parallel constant-wattage cable over self-regulating PTC tape?
Choose zone-parallel constant-wattage cable when you require a completely flat power output up to +205 °C without the power-taper of PTC polymers, zero cold-start inrush current (allowing smaller circuit breakers and transformers), or 400 Vac phase-to-phase circuits up to 250 m long.
Can parallel constant-wattage heating cable be overlapped on valves or flanges?
No. Unlike self-regulating PTC cable, a constant-wattage NiCr heating element maintains full thermal output regardless of pipe temperature. Overlapping or crossing the cable over itself will create a localized hot spot that can exceed the +200 °C (FEP) or +250 °C (PFA) fluoropolymer limit; always maintain at least 25 mm spacing.
Where do I cut a zone-parallel heating cable during field termination?
Contact nodes are marked along the outer sheath by periodic indentations or printed node marks every 0.5 m to 1.5 m. Cut the cable midway between two contact nodes; the short unheated tail beyond the last node (up to one zone length) is used inside the power or end-seal junction box as a cold lead.

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