Longwall shearer & Bretby handler
Primary duty — guided flexing in longwall shearer Bretby chains along the coal face.
Product
640/1,100 V flexible coalcutter trailing cables to BS 6708:1998 laid up around a central elastomeric cradle, with composite copper/nylon braided phase screens, EPR insulation and heavy-duty chloroprene (PCP) sheath across Types 11, 14 and 16.
Typical values for this cable type, based on BS 6708 — confirmed in the datasheet and quotation for your order.
Application fit
Individually and/or collectively screened flexible underground coal-mining trailing cable to BS 6708 Type 11, Type 14 and Type 16 for shearers and mobile face plant.
Primary duty — guided flexing in longwall shearer Bretby chains along the coal face.
Heavy-duty underground trailing service for continuous miners, roadheaders and loaders.
Inbye gate-road feeder loops from flameproof gate-end switchgear to face machines.
Permissible on low-speed shuttle-car or loader gathering reels within tension limits.
Unarmoured flexible trailing cable — not rated for long vertical shaft suspension.
Use BS 6708 Type 62/63/64Construction
Three EPR-insulated Class 5 tinned copper phase cores—each wrapped with a coloured textile identification tape and a composite tinned-copper/nylon braided screen—are laid up around a profiled elastomeric cradle. Type 11 adds 1 screened pilot core (4 cores total); Type 14 adds 1 unscreened earth + 1 unscreened pilot core in the main lay (5 cores total); Type 16 places 2 unscreened earth cores + 1 unscreened pilot core in the three outer interstices for a more compact diameter (6 cores total).
| # | Layer | Material & reference |
|---|---|---|
| 1 | Phase, earth & pilot conductors | Electrolytic stranded tinned copper wire, IEC 60228 Class 5 (16 to 95 mm² phase; 10 to 50 mm² earth/pilot)IEC 60228 Class 5 |
| 2 | Core insulation | EPR (ethylene-propylene rubber) on all phase, earth and pilot conductors (1.55 to 2.0 mm radial on phase cores)BS 7655 / BS 6708 |
| 3 | Identification separator | Coloured textile tape applied over EPR core insulation for phase and pilot identificationCore identification |
| 4 | Composite core screen | Tinned copper and nylon braided screen over phase cores (25.4 to 53 mm² total screen CSA; also on pilot core in Type 11)Composite Cu/nylon braid |
| 5 | Elastomeric cradle | Profiled elastomeric centre cradle positioning the laid-up cores in controlled contactCradle separator |
| 6 | Inner bedding | Rubber-based elastomeric bedding compound extruded over laid-up core assemblyTorsional bedding |
| 7 | Outer sheath | Heavy-duty flame-retardant polychloroprene (chloroprene / PCP) outer sheath, black (5.0 to 7.0 mm radial wall on Types 14/16)BS 6708 / BS 7655 EM2 |
3 composite-screened phase cores + 1 composite-screened pilot core laid up around an elastomeric cradle (30.9–33.0 mm OD)
3 composite-screened phase cores + 1 unscreened earth core + 1 unscreened pilot core in a 5-core cradle lay (43.2–73.9 mm OD)
3 composite-screened phase cores around cradle + 2 unscreened earth cores & 1 unscreened pilot core in outer interstices (36.5–63.0 mm OD)
Technical data
Sizes
Switch between Dimensions & Current Ratings and Electrical & Short-Circuit Parameters.
| Type · nominal CSA mm² | Phase stranding | Cond. Ø mm | Insul. wall mm | Total screen CSA | Earth + pilot cores | Sheath mm | Min. OD mm | Max. OD mm | Min. R mm | Max. pull kgf | Mass ≈ kg/km | Cu wt kg/km | Current (25 °C) A | Enquiry |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BS 6708 Type 11 · 640/1,100 V (3 Screened Phase + 1 Screened Pilot around Elastomeric Cradle) | ||||||||||||||
| Type 11 · 3×16+16 | 126/0.40 | 5.50 | 1.55 | Braid (Ø 10.9) | 1×16 scr. pilot | 4.2 | 30.9 | 33.0 | 264 | 384 | 2,000 | 1,100 | 85 | |
| BS 6708 Type 14 · 640/1,100 V (3 Screened Phase + 1 Earth + 1 Pilot in 5-Core Cradle Lay) | ||||||||||||||
| Type 14 · 3×25+2×16 | 196/0.40 | 6.75 | 1.60 | 25.4 mm² | 1×16E + 1×16P | 5.0 | 43.2 | 46.6 | 420 | 638 | 3,550 | 1,307 | 110 | |
| Type 14 · 3×35+2×16 | 276/0.40 | 8.00 | 1.60 | 25.4 mm² | 1×16E + 1×16P | 5.2 | 47.3 | 50.7 | 457 | 729 | 4,280 | 1,675 | 135 | |
| Type 14 · 3×50+2×25 | 396/0.40 | 9.75 | 1.70 | 33.0 mm² | 1×25E + 1×25P | 5.7 | 53.7 | 57.6 | 519 | 910 | 5,650 | 2,340 | 170 | |
| Type 14 · 3×70+2×35 | 360/0.50 | 11.60 | 1.80 | 35.0 mm² | 1×35E + 1×35P | 6.3 | 61.2 | 65.0 | 585 | 1,148 | 7,520 | 3,228 | 205 | |
| Type 14 · 3×95+2×50 | 475/0.50 | 12.75 | 2.00 | 53.0 mm² | 1×50E + 1×50P | 7.0 | 69.3 | 73.9 | 666 | 1,446 | 9,800 | 4,326 | 250 | |
| BS 6708 Type 16 · 640/1,100 V (3 Screened Phase + 2 Interstitial Earths + 1 Interstitial Pilot) | ||||||||||||||
| Type 16 · 3×25+3×10 | 196/0.40 | 6.75 | 1.60 | 25.4 mm² | 2×10E + 1×10P | 5.0 | 36.5 | 39.2 | 353 | 533 | 2,770 | 1,298 | 110 | |
| Type 16 · 3×35+3×10 | 276/0.40 | 8.00 | 1.60 | 25.4 mm² | 2×10E + 1×10P | 5.0 | 39.5 | 42.7 | 385 | 580 | 3,250 | 1,666 | 135 | |
| Type 16 · 3×50+3×16 | 396/0.40 | 9.75 | 1.70 | 33.0 mm² | 2×16E + 1×16P | 5.0 | 43.9 | 47.0 | 423 | 649 | 4,200 | 2,321 | 170 | |
| Type 16 · 3×70+3×25 | 360/0.50 | 11.60 | 1.80 | 35.0 mm² | 2×25E + 1×25P | 5.4 | 49.6 | 53.3 | 480 | 795 | 5,650 | 3,276 | 205 | |
| Type 16 · 3×95+3×35 | 475/0.50 | 12.75 | 2.00 | 53.0 mm² | 2×35E + 1×35P | 6.0 | 56.2 | 63.0 | 567 | 1,002 | 7,350 | 4,374 | 250 | |
| Type · nominal CSA mm² | Max. phase DC res. (20 °C) Ω/km | Max. pilot/earth DC res. (20 °C) Ω/km | Max. 3-screen parallel res. Ω/km | 1 s short-circuit / interm. rating | Reactance (50 Hz) Ω/km | Min. insul. res. (20 °C) | 3-phase V-drop mV/A/m |
|---|---|---|---|---|---|---|---|
| BS 6708 Type 11 · Electrical Parameters | |||||||
| Type 11 · 3×16+16 | 1.240 | 1.240 | 1.05 | 96 A interm. | 0.109 | 435 MΩ·km | 2.62 mV/A/m |
| BS 6708 Type 14 · Electrical Parameters | |||||||
| Type 14 · 3×25+2×16 | 0.795 | 1.240 | 1.10 | 3,450 A | — | BS 6708 | — |
| Type 14 · 3×35+2×16 | 0.565 | 1.240 | 1.20 | 3,450 A | — | BS 6708 | — |
| Type 14 · 3×50+2×25 | 0.393 | 0.795 | 1.40 | 4,550 A | — | BS 6708 | — |
| Type 14 · 3×70+2×35 | 0.277 | 0.565 | 0.70 | 4,820 A | — | BS 6708 | — |
| Type 14 · 3×95+2×50 | 0.210 | 0.393 | 0.85 | 7,300 A | — | BS 6708 | — |
| BS 6708 Type 16 · Electrical Parameters | |||||||
| Type 16 · 3×25+3×10 | 0.795 | 1.950 | 1.10 | 3,450 A | — | BS 6708 | — |
| Type 16 · 3×35+3×10 | 0.565 | 1.950 | 1.20 | 3,450 A | — | BS 6708 | — |
| Type 16 · 3×50+3×16 | 0.393 | 1.240 | 1.40 | 4,550 A | — | BS 6708 | — |
| Type 16 · 3×70+3×25 | 0.277 | 0.795 | 0.70 | 4,820 A | — | BS 6708 | — |
| Type 16 · 3×95+3×35 | 0.210 | 0.565 | 0.85 | 7,300 A | — | BS 6708 | — |
Reel check
A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.
Quality & approvals
Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.
| Testing & inspection | Test value / reference | Frequency |
|---|---|---|
| Routine tests | ||
| AC high-voltage dielectric test | 3.0 kV AC on phase cores (Types 11/14/16); 1.5 kV AC on interstitial pilot and earth cores (Type 16) | Every drum |
| Phase, pilot/earth & composite screen DC resistance | Verified at 20 °C against BS 6708 limits (0.210–1.240 Ω/km phase; 0.70–1.40 Ω/km 3-screen parallel) | Every drum |
| Sample tests | ||
| Flame retardance test | Self-extinguishing heavy-duty chloroprene outer sheath per BS 6708 / BS EN 60332-1-2 | Production batch |
| Radial sheath wall & overall diameter check | Verification of 5.0–7.0 mm heavy-duty PCP radial sheath wall and minimum/maximum OD tolerances | Every drum |
Marking & supply
Sheath marking
Technical documents
FAQ
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