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Product

fiber optic cable seriesIEC 60794-4-20 OPPC10–220 kV Phase LineLaser-Welded FIMT

OPPC Optical Phase Conductor (OPPC) Overhead Power TransmissionOverhead HV/MV phase conductor with laser-welded 316L stainless-steel FIMT optical core

OPPC Optical Phase Conductor Overhead Power Transmission Composite Fibre Cable per IEC 60794-4-20 combining an ACSR/AAAC phase conductor with a hermetically laser-welded stainless-steel optical unit (12–96 G.652.D fibres) for 10 kV.

10–220 kV Overhead Phase
Hermetic 316L FIMT
ACSR / AAAC Matched
IEC 60794-4-20
Order designation
OPPC-48B1-185/30
Outer Ø
19.0 mm
Weight ≈
745 kg/km
Breaking load (RTS)
68 kN
Phase ampacity
495 A
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Fibre count
12 to 96 fibres
G.652.D / G.655 in 316L FIMT
Cross-section
70 to 400 mm²
ACSR / AAAC phase-matched
Continuous amp.
245 to 840 A
Continuous phase current
Breaking load
42 to 138 kN
Rated Tensile Strength (RTS)
Operating temp.
-40 to +90 °C
+200 °C short-circuit peak
Fibre loss
≤ 0.35 / 0.21
dB/km @ 1310 / 1550 nm

Typical values for this cable type, based on IEC 60794-4-20 / IEEE 1138 / IEC 61089 — confirmed in the datasheet and quotation for your order.

Application fit

Is OPPC right for your machine?

Replaces one of the three overhead power phase conductors on 10–220 kV wood-pole or H-frame lines that lack an overhead earth-wire peak for OPGW.

Free-hanging vertical run

Suitable

Strung on phase insulators across 10 kV, 35 kV, 66 kV, 110 kV and 220 kV overhead transmission spans.

Fixed installation

Suitable

Matches diameter, sag-tension, ampacity and ice/wind loading of the companion ACSR/AAAC phase conductors.

Immersion & wet locations

Suitable

Laser-welded 304L/316L stainless-steel FIMT blocks moisture and hydrogen darkening over 40-year grid service.

Energy chain / drag chain

Not suitable

Bare overhead high-voltage phase conductor; not for indoor or drag-chain use.

Use Industrial Breakout FO
Typical machines10–66 kV Rural & Renewable Collector Lines110–220 kV Sub-Transmission Without Earth WireWind & Solar Farm Grid InterconnectsDistribution Automation & Fault LocationConductor Temperature & Ice-Load DTS/DSS

Construction

Layer by layer

OPPC Optical Phase Conductor showing G.652.D/G.655 fibres in high-temperature gel inside a laser-welded 316L stainless-steel FIMT, inner ACS/steel reinforcement wires, and outer 1350-H19 / 6201-T81 aluminum phase wires.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Single-mode optical fibres + high-temp gel12 to 96 ITU-T G.652.D / G.655 single-mode fibres (+ optional OM3/SM sensing fibres) in +200 °C silicone-free thixotropic compound≤ 0.35 dB/km @ 1310 nm · ≤ 0.21 dB/km @ 1550 nm
2Laser-welded 316L stainless-steel FIMTHermetically welded AISI 304L/316L stainless-steel tube (central or inner-layer stranded) with 0.25–0.40 % EFLIsolates fibres from continuous +90 °C phase heat & tension
3Inner Aluminum-Clad Steel (ACS) strength coreConcentric-lay Aluminum-Clad Steel (20SA–40SA per IEC 61232) or galvanized steel core wiresCarries catenary mechanical tension (RTS 42–138 kN)
4Outer EC Aluminum / AAAC phase conductor wires1 to 3 layers of hard-drawn 1350-H19 Aluminum (IEC 60889) or 6201-T81 Aluminum Alloy (IEC 60104) wiresCarries continuous 50/60 Hz phase current (245–840 A)

OPPC-70 to OPPC-150 (10–66 kV)

Matched to LGJ-70/10, 95/15, 120/20 & 150/25 ACSR phase conductors with 24–48 fibres

OPPC-185 to OPPC-400 (66–220 kV)

Matched to Drake / Lynx / Zebra ACSR phase conductors with 48–96 fibres and HV insulator splice boxes

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 60794-4-20 / IEEE 1138 / IEC 61089. Values for your order are confirmed in the datasheet and quotation.

Electrical

Continuous current (ampacity)
245 A (OPPC-70) to 840 A (OPPC-400) per IEC 61597
DC resistance @ 20 °C
0.072 to 0.410 Ω/km
Short-circuit capacity (I²t)
25 to 260 kA²·s (0.5 s to +200 °C)

Thermal

Continuous operating temp.
-40 °C to +90 °C (continuous phase current)
Short-circuit peak temp.
Up to +200 °C (0.5 s fault duration)
Linear expansion coeff.
17.8 to 19.6 × 10⁻⁶ /K (ACSR-matched)

Mechanical

Rated Tensile Strength (RTS)
42 kN to 138 kN
Modulus of elasticity
68 to 88 GPa (matched to companion phases)
Crush resistance
≥ 10,000 N / 100 mm
Min. bend radius
20 × OD (static) · 30 × OD (stringing sheave)

Optical

Fibre specification
ITU-T G.652.D / G.655 (high-temp +125 °C coating opt)
Attenuation @ 1310 / 1550 nm
≤ 0.35 dB/km / ≤ 0.21 dB/km
Excess fibre length (EFL)
0.25 % to 0.40 % inside 316L FIMT

Resistance

Hermeticity & moisture
100 % eddy-current tested 316L welded FIMT
Aeolian vibration
10⁸ cycles at 20 % RTS without wire or fibre break
HV isolation at joints
Porcelain/silicone composite HV optical insulator boxes

Reference standards

OPPC standard
IEC 60794-4-20 Aerial Optical Phase Conductors
Conductor standard
IEC 61089 · IEC 61232 (ACS) · IEC 60889
RoHS & REACH
2011/65/EU & EC 1907/2006 compliant

Identification

Outer appearance
Bare stranded aluminum phase conductor
Fibre colour code
TIA-598-D 12-colour + ring-coded bundles
Customs tariff (HS)
8544.7000

Sizes

6 standard OPPC phase-matched cross-sections (70 mm² to 400 mm²)

Electrical ampacity, DC resistance and mechanical RTS ratings for OPPC per IEC 60794-4-20.

Dimensions, ampacity & RTS
Order designationMatched ACSR & fibresOuter Ø
mm		Weight ≈
kg/km		RTS
kN		DC R @ 20 °C
Ω/km		Ampacity
A		Enquiry
10–66 kV Medium-Voltage OPPC (70–150 mm²)
OPPC-24B1-70/10ACSR 70/10 · 24F G.652.D11.4275260.410245
OPPC-24B1-120/20ACSR 120/20 · 24F G.652.D15.2495460.238365
OPPC-48B1-150/25ACSR 150/25 · 48F G.652.D17.1610560.192425
66–220 kV High-Voltage OPPC (185–400 mm²)
OPPC-48B1-185/30ACSR 185/30 · 48F G.652.D19.0745680.154495
OPPC-48B1-240/40ACSR 240/40 · 48F G.652.D21.6965860.119590
OPPC-96B1-400/50ACSR 400/50 · 96F G.652.D27.61,5101320.072840
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Continuous ampacity calculated at +80 °C conductor, +35 °C ambient, 0.6 m/s wind and 1000 W/m² solar radiation per IEC 61597.

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
100 % eddy-current FIMT weld, DC resistance & OTDR testZero tube pinholes, DC R within IEC 61089, α ≤ 0.35 / 0.21 dB/kmEvery manufactured drum length
Sample tests
Continuous +90 °C thermal aging & +200 °C short-circuit testΔα ≤ 0.05 dB/km after thermal cycling and rated I²t fault pulseType qualification
Stress-strain, creep & aeolian vibration fatigue10⁸ vibration cycles and tensile loading to RTS per IEC 60794-4-20Type qualification

Inspection certificate

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

Product approvals

IEC 60794-4-20 OPPC StandardIEC 61089 & IEEE 1138RoHS 2 & REACH Compliant

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

Stamped drum tag: TEBAOFLEX OPPC-<COUNT>B1-<AREA> IEC 60794-4-20
Delivery form
Fumigated export wooden or steel drums
Standard drum lengths
1000 m · 2000 m · 4000 m (or custom cut lengths)
MOQ
500 m (standard) · 1000 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFOPPC Optical Phase Conductor (OPPC) Overhead Power Transmission – technical datasheet6 sizes · construction, technical data, approvalsXLSXOPPC spec data (Excel)All 6 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 is the optical signal brought down from a live high-voltage OPPC phase conductor to ground?
At terminal substations and mid-span splice towers, the OPPC terminates into a high-voltage composite silicone-rubber or porcelain Optical Isolator / Terminal Box (rated 10 kV to 220 kV). Because the optical fibres themselves are pure dielectric silica glass, they pass safely through the hollow HV insulator column from live phase potential to the grounded splice cabinet.
Why choose OPPC over ADSS on 10–110 kV lines that have no overhead earth wire?
ADSS hung below phase conductors requires extra ground-clearance height on poles and can suffer dry-band arcing above 110 kV or theft/vandalism on low rural poles. OPPC replaces one of the three phase conductors directly—requiring zero extra tower height and providing real-time conductor temperature (DTS) and ice-load (DSS) sensing inside the phase.
How do you prevent the continuous +90 °C operating temperature of the phase conductor from degrading the fibres?
OPPC uses a hermetically welded 316L stainless-steel FIMT filled with high-drop-point (> +220 °C) silicone-free thixotropic gel and +125 °C high-temperature acrylate (or polyimide) fibre coatings.
Are HV inline splice insulators and terminal insulator columns supplied with the cable?
Yes. We supply the complete OPPC package including preformed tension dead-ends, suspension clamps, 10–220 kV inline splice insulator assemblies, and terminal down-lead insulator columns.

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OPPC Optical Phase Conductor (OPPC) Overhead Power Transmission

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