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Product

BS 6883 / UKOOA offshore cableBS 6883 & UKOOA (GF / GH)150/250 V (300 V) & 600/1000 VEPR GP4 / SW4 LSZH · Cat A Flame

BS 6883 UIS / UCS Unarmoured Offshore Instrumentation CableBS 6883 & UKOOA Type UIS (IS+OS) & Type UCS (OS) EPR/SW4 LSZH offshore cable

Fixed offshore installation instrumentation cable built to BS 6883 and UKOOA (Type UCS Code GF and Type UIS Code GH) with Class 5 tinned copper conductors, +90 °C EPR GP4 insulation, Al/PET screen and heavy-duty SW4 oil-resistant LSZH elastomer sheath.

Flame-retardant

Oil-resistant

Low-EMC design

EMC screen

Configuration

Order designation: BS6883-UIS 7P×0.75 (GH110)
Outer Ø ≈: 16.2 mm
Copper weight: 140 kg/km
Total weight ≈: 365 kg/km
Min. bend R (fixed): 97 mm

All sizes (18)

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Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 150/250 V
UKOOA types: UCS (GF) / UIS
Insulation: EPR GP4 (+90 °C)
Outer sheath: SW4 LSZH (+90°C)
Flame test: IEC 60332-3-22
Temperature: −40 °C to +90 °C

Typical values for this cable type, based on BS 6883 / UKOOA (Codes GF & GH) / BS 7655 / IEC 60332-3-22 — confirmed in the datasheet and quotation for your order.

Application fit

Is BS 6883 UIS / UCS right for your machine?

Engineered for internal accommodation modules, control rooms, switchgear rooms and sheltered deck trays on fixed offshore oil & gas platforms, FPSOs and drilling rigs where steel/bronze wire braid armour (Type WBIS/WBCS) is not required.

Fixed installation

Suitable

Supple Class 5 tinned copper conductors and elastomeric EPR/SW4 compounds allow tight 6 × OD routing inside offshore modules and cabinets.

Offshore platform & shipboard deck trays

Suitable

Heavy-duty SW4 thermoset LSZH sheath resists North Sea salt spray, UV weathering, IRM 902/903 mineral oils and diesel fuel.

TBM gantry & advancing tunnel reel

Not suitable

Unarmoured UIS/UCS cable; for exposed open-deck mechanical hazards specify wire-braid armoured BS 6883 WBIS/WBCS.

RE-2Y(st)Y SWAY Armoured Cable

Energy chain / drag chain

Not suitable

Designed for fixed offshore module and shipboard installation, not continuous drag chains.

PUR Drag-Chain Control Cable

Typical machinesFixed Offshore Oil & Gas Production PlatformsFPSO, FSO & FLNG Topsides Control ModulesOffshore Living Quarters, CCR & Marshalling RoomsJack-Up & Semi-Submersible Drilling UnitsOffshore Wind HVDC/HVAC Converter Stations

Construction

Layer by layer

Shown: BS6883-UIS 7P×0.75 mm² (UKOOA Code GH110) with Class 5 tinned copper conductors, GP4 EPR insulation, individual & collective Al/PET screens with tinned copper drain wires and Grey (or Ex-i Blue) SW4 thermoset LSZH outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Class 5 flexible tinned annealed copper	0.75 mm² (24/0.20 mm), 1.0 mm² (32/0.20 mm), 1.5 mm² (30/0.25 mm) or 2.5 mm² (50/0.25 mm) per BS EN 60228 (Class 2 optional)Tin coating prevents marine sulphide corrosion while Class 5 stranding withstands platform vibration
2	Cross-linked EPR elastomer (Type GP4)	Ethylene Propylene Rubber (GP4 to BS 7655-1.2) rated +90 °C continuous / +250 °C short-circuitThermoset cross-linked insulation will not melt or drip during fire exposure
3	Type UCS (Collective) or Type UIS (Individual + Collective) screen	Aluminium/PET tape (≥ 100 % coverage) in contact with 0.5 mm² tinned copper drain wire; pair screens isolated by PET tape on Type UISSuppresses electrostatic and VFD interference across offshore topsides
4	Cross-linked oil-resistant LSZH elastomer (Type SW4)	Reduced-halogen / zero-halogen thermoset elastomeric compound (SW4 to BS 7655-2.6) in Grey or Blue (Ex-i)Passes IEC 60332-3-22 Cat A flame, IEC 60754 halogen-free and BS 7655 hot oil immersion tests

Type UCS (UKOOA Code GF — Collective Screen)

Unarmoured Collectively Screened pairs/triads with overall Al/PET foil + tinned copper drain wire

Type UIS (UKOOA Code GH — Ind. + Coll. Screen)

Unarmoured Individually & Collectively Screened pairs/triads eliminating inter-pair crosstalk

Ex-i Intrinsically Safe (Blue SW4 Sheath)

RAL 5015 Blue SW4 thermoset LSZH outer sheath for Zone 1 / Zone 2 Ex-i offshore loops

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on BS 6883 / UKOOA (Codes GF & GH) / BS 7655 / IEC 60332-3-22. Values for your order are confirmed in the datasheet and quotation.

Electrical

Voltage rating (U₀/U): 150/250 V (300 V class) standard · 600/1000 V heavy-duty option
Test voltage (core-to-core / screen): 1500 V AC rms for 5 min (150/250 V grade) · 3500 V AC (600/1000 V grade)
Max. conductor DC resistance @ 20 °C: 26.7 (0.75) · 20.0 (1.0) · 13.7 (1.5) · 8.21 Ω/km (2.5 mm² Cl.5)
Max. mutual capacitance @ 1 kHz: ≤ 200 nF/km (UCS) · ≤ 250 nF/km (UIS)
Max. L/R ratio (inductance / resistance): ≤ 25 µH/Ω (0.75 & 1.0 mm²) · ≤ 40 µH/Ω (1.5 mm²) · ≤ 60 µH/Ω (2.5 mm²)

Thermal

Continuous conductor temperature: +90 °C (short-circuit rating +250 °C for 5 s)
Ambient operating range: −40 °C to +90 °C (fixed) · −25 °C to +90 °C (installation)

Mechanical

Min. bending radius, fixed: 6 × OD (unarmoured UIS / UCS elastomeric construction)
Tear & abrasion resistance: Heavy-duty cross-linked SW4 thermoset rubber jacket

Resistance

Bunched vertical flame test: IEC 60332-3-22 Category A (7 litres/m non-metallic volume, 40 min burner)
Halogen gas & smoke emission: IEC 60754-1 (HCl ≤ 0.5 %), IEC 60754-2 & IEC 61034-2 (≥ 60 % light)
Oil & fluid immersion: BS 7655-2.6 Type SW4 mineral oil, diesel & chemical resistance at +100 °C

Reference standards

Design & offshore code standards: BS 6883, UKOOA (Codes GF & GH), BS 7655-1.2 (GP4) & BS 7655-2.6 (SW4)
Classification society type approvals: Lloyd's Register (LR), DNV & ABS offshore unit rules compatible

Identification

Core identification: Pairs: Bk/Wh numbered · Triads: Bk/Wh/Rd numbered · Quads: Bk/Wh/Rd/Bu
Outer sheath colour: Grey (standard non-Ex-i) or Blue (Ex-i intrinsic safety)
Customs tariff (HS): 8544.49

Sizes

18 standard BS 6883 / UKOOA Type UIS & Type UCS offshore cable sizes

1, 2, 3, 7, 12 and 20 pairs/triads in 0.75, 1.0, 1.5 and 2.5 mm² with UKOOA GF (UCS) and GH (UIS) reference codes.

Dimensions, UKOOA codes & weights
Order designation (UKOOA)	Format	Screen type	Outer Ø ≈ mm	Copper kg/km	Weight ≈ kg/km	Min. bend R fixed mm
0.75 mm² (24/0.20 mm) — L/R ≤ 25 µH/Ω · R₂₀ ≤ 26.7 Ω/km (UKOOA GF/GH)
BS6883-UCS 1P×0.75 (GF107)	1×2×0.75 mm²	UCS (OS)	7.2	19	76	43
BS6883-UCS 1T×0.75 (GF132)	1×3×0.75 mm²	UCS (OS)	7.7	26	88	46
BS6883-UCS 2P×0.75 (GF108)	2×2×0.75 mm² (Quad)	UCS (OS)	8.6	34	112	52
BS6883-UCS 3P×0.75 (GF109)	3×2×0.75 mm²	UCS (OS)	11.4	48	172	68
BS6883-UCS 7P×0.75 (GF110)	7×2×0.75 mm²	UCS (OS)	14.8	108	305	89
BS6883-UCS 12P×0.75 (GF111)	12×2×0.75 mm²	UCS (OS)	19.2	182	495	115
BS6883-UCS 20P×0.75 (GF112)	20×2×0.75 mm²	UCS (OS)	23.8	302	768	143
BS6883-UIS 3P×0.75 (GH109)	3×2×0.75 mm²	UIS (IS+OS)	12.2	62	202	73
BS6883-UIS 7P×0.75 (GH110)	7×2×0.75 mm²	UIS (IS+OS)	16.2	140	365	97
BS6883-UIS 12P×0.75 (GH111)	12×2×0.75 mm²	UIS (IS+OS)	21.0	238	590	126
1.0 mm² (32/0.20 mm) — L/R ≤ 25 µH/Ω · R₂₀ ≤ 20.0 Ω/km (UKOOA GF/GH)
BS6883-UCS 1P×1.0 (GF114)	1×2×1.0 mm²	UCS (OS)	7.6	24	86	46
BS6883-UIS 3P×1.0 (GH116)	3×2×1.0 mm²	UIS (IS+OS)	13.0	78	236	78
BS6883-UIS 7P×1.0 (GH117)	7×2×1.0 mm²	UIS (IS+OS)	17.2	178	428	103
BS6883-UIS 12P×1.0 (GH118)	12×2×1.0 mm²	UIS (IS+OS)	22.4	302	695	134
1.5 mm² (30/0.25 mm) — L/R ≤ 40 µH/Ω · R₂₀ ≤ 13.7 Ω/km (UKOOA GF/GH)
BS6883-UCS 1P×1.5 (GF121)	1×2×1.5 mm²	UCS (OS)	8.4	34	108	50
BS6883-UIS 3P×1.5 (GH123)	3×2×1.5 mm²	UIS (IS+OS)	14.6	108	304	88
BS6883-UIS 7P×1.5 (GH124)	7×2×1.5 mm²	UIS (IS+OS)	19.4	248	558	116
2.5 mm² (50/0.25 mm) — L/R ≤ 60 µH/Ω · R₂₀ ≤ 8.21 Ω/km (UKOOA GF/GH)
BS6883-UCS 1P×2.5 (GF128)	1×2×2.5 mm²	UCS (OS)	9.8	53	148	59

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
UKOOA First Letter 'G' = Grey outer sheath (standard); replace 'G' with 'B' (e.g. BF107 / BH110) for Blue Ex-i outer sheath.

Electrical parameters by cross-section (Class 5 tinned copper)
Conductor size	Max. DC R @ 20 °C Ω/km	Max. L/R ratio µH/Ω	Max. C (UCS) nF/km	Max. C (UIS) nF/km
0.75 mm² (24/0.20 mm)	26.70	25	200	250
1.00 mm² (32/0.20 mm)	20.00	25	200	250
1.50 mm² (30/0.25 mm)	13.70	40	200	250
2.50 mm² (50/0.25 mm)	8.21	60	200	250

For fire-survival circuits requiring 950 °C for 3 hours, specify BS 7917 mica-glass taped UIS/UCS offshore cable.

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.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
1500 V / 3500 V AC spark & 5-minute water-immersion voltage test	No breakdown during 5 min AC test in water bath per BS 6883	Every manufactured drum
Sample tests
IEC 60332-3-22 Cat A flame, IEC 60754-1/2 halogen & BS 7655 SW4 oil test	Char ≤ 2.5 m under Cat A 7 L/m flame; HCl ≤ 0.5 %; pass hot oil immersion	Periodic audit & type test

Inspection certificate

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

Product approvals

BS 6883 & UKOOA (Codes GF/GH/BF/BH) CompliantIEC 60332-3-22 Cat A, IEC 60754 & IEC 61034BS 7655-1.2 (GP4) & BS 7655-2.6 (SW4)

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BS 6883 <UIS/UCS> <size> 150/250V UKOOA <code > SW4 IEC 60332-3-22 CAT A CE

Delivery form: Non-returnable fumigated wooden drums
Standard lengths: 500 m · 1000 m standard drums (cut lengths on request)
MOQ: 500 m (stock sizes) · 1000 m (custom)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFBS 6883 UIS / UCS Unarmoured Offshore Instrumentation Cable – technical datasheet18 sizes · construction, technical data, approvals XLSXBS 6883 UIS / UCS spec data (Excel)All 18 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.

What do the acronyms UCS (Code GF) and UIS (Code GH) mean in BS 6883 / UKOOA offshore cables?

'UCS' stands for Unarmoured Collectively Screened (UKOOA Code GF in Grey sheath, BF in Blue Ex-i sheath), which applies a single overall Al/PET foil screen and drain wire around all pairs. 'UIS' stands for Unarmoured Individually and Collectively Screened (UKOOA Code GH in Grey sheath, BH in Blue Ex-i sheath), which screens every individual pair/triad as well as the complete bundle.

How does BS 6883 differ from onshore BS 5308 or EN 50288-7 LSZH cables?

Onshore BS 5308 and RE-2X(st)H cables use thermoplastic LSZH outer sheaths rated to IEC 60332-3-24 (Category C) and are susceptible to swelling in hot hydrocarbons. BS 6883 uses cross-linked EPR (GP4) insulation and a heavy-duty thermoset elastomeric LSZH outer sheath (Type SW4 to BS 7655-2.6) that resists hot mineral oil, diesel and drilling fluids while passing the most stringent IEC 60332-3-22 Category A bunched flame test.

Why does BS 6883 use standard pair counts of 1, 2, 3, 7, 12, 20, 27 and 37 pairs instead of 4, 8, 16 and 24?

Under UKOOA and BS 6883 geometric lay-up rules, 1, 3, 7, 12, 20, 27 and 37 pairs form perfectly concentric circular layers (1, 3, 1+6, 3+9, 1+6+13, etc.), producing a tight, round cross-section that seals reliably inside offshore bulkhead transit frames and Ex-d/Ex-e compression glands.

How should the screen and drain wire of BS 6883 UIS / UCS be earthed in instrumentation and Ex-i loops?

To prevent circulating 50/60 Hz ground-loop currents from coupling into millivolt or 4–20 mA signals, the Al/PET screen and tinned copper drain wire of BS 6883 UIS / UCS should be bonded to the clean instrumentation earth bar at one end only (typically in the control/marshalling cabinet) and insulated against chassis contact at the field transmitter or junction box, in accordance with IEC 60079-14 and EN 50288-7.

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BS 6883 UIS / UCS Unarmoured Offshore Instrumentation Cable

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