Longwall shearer & Bretby handler
Six-core symmetrical twin-phase geometry bends with 25 % lower force in tight Bretby chains.
Product
OnGcekż-G2 and O2nGcekż-G2 are high-ampacity 0.6/1 kV screened mining trailing cables engineered with a twin-strand ('-G2', 2×3×S) split-phase conductor architecture. Splitting each phase into two parallel screened cores reduces bending stiffness and outer
Typical values for this cable type, based on PN-G-90101 / ZN-TF-206 — confirmed in the datasheet and quotation for your order.
Application fit
Developed for high-power 0.6/1 kV longwall shearers, heavy roadheaders, and compact Bretby cable handler chains where a conventional 3×95 or 3×120 mm² cable is too stiff to bend.
Six-core symmetrical twin-phase geometry bends with 25 % lower force in tight Bretby chains.
O2nGcekż-G2 double-layer PCP sheath resists severe floor abrasion and rock impact on longwall faces.
High current capacity with lower reactance voltage drop over long face runs.
Suitable for low-tension shuttle reels; parallel phase lugs must be crimped symmetrically.
NSHTÖU 0.6/1 kVSymmetrical 6-core (2×3×S) phase layout cancels magnetic unbalance on shearer traction drives.
Construction
Six +90 °C EPR power cores (2×3×S) with individual semi-conductive screens laid symmetrically around a central earth/pilot assembly
| # | Layer | Material & reference |
|---|---|---|
| 1 | Twin-strand phase conductors ('-G2') | Six Class 5 fine-stranded copper conductors connected in pairs (L1a/L1b, L2a/L2b, L3a/L3b)IEC 60228 Class 5 |
| 2 | +90 °C EPR core insulation ('c') | Cross-linked heat-resistant ethylene-propylene elastomer on all six phase coresPN-G-90101 |
| 3 | Elastomeric phase & pilot screens ('ek') | Semi-conductive rubber screen over each of the six power cores and pilot bundlePN-G-90101 |
| 4 | Central pilot unit ('ż') & earth | Screened bundle of 4–9 pilot cores plus uninsulated copper protective earth conductorPN-G-90101 |
| 5 | Single ('On') or double ('O2n') mining | Flame-retardant polychloroprene (PCP) outer jacket; O2n variant adds an inner elastomerPN-G-90101 / ZN-TF-206 |
Single heavy-duty '-G' polychloroprene outer sheath over 2×3×S twin-strand screened core assembly.
Double-layer ('2n') torsion- and tear-reinforced polychloroprene outer sheath for severe longwall face duty.
Technical data
Sizes
Nominal dimensions, copper weights and electrical parameters for OnGcekż-G2 / O2nGcekż-G2 per PN-G-90101 / ZN-TF-206.
| Order designation | Twin-Phase (2×3×S) + PE + Pilots | Phase size mm² | Outer Ø ≈ mm | Copper kg/km | Weight ≈ kg/km | Min. bend R fixed mm | Enquiry |
|---|---|---|---|---|---|---|---|
| OnGcekż-G2 (single-layer heavy PCP mining sheath) | |||||||
| OnGcekż-G2 2×3×16+1×16+4×2.5 | 2×3×16 + 1×16 + 4×2.5 | 16 | 40.5 | 1,171 | 2,480 | 202 | |
| OnGcekż-G2 2×3×25+1×25+4×2.5 | 2×3×25 + 1×25 + 4×2.5 | 25 | 45.8 | 1,776 | 3,420 | 229 | |
| OnGcekż-G2 2×3×35+1×25+4×2.5 | 2×3×35 + 1×25 + 4×2.5 | 35 | 50.4 | 2,352 | 4,290 | 252 | |
| OnGcekż-G2 2×3×50+1×35+4×2.5 | 2×3×50 + 1×35 + 4×2.5 | 50 | 56.8 | 3,312 | 5,680 | 284 | |
| OnGcekż-G2 2×3×70+1×50+4×2.5 | 2×3×70 + 1×50 + 4×2.5 | 70 | 63.5 | 4,608 | 7,450 | 318 | |
| O2nGcekż-G2 (double-layer reinforced PCP mining sheath) | |||||||
| O2nGcekż-G2 2×3×25+1×25+4×2.5 | 2×3×25 + 1×25 + 4×2.5 | 25 | 47.2 | 1,776 | 3,610 | 236 | |
| O2nGcekż-G2 2×3×35+1×25+4×2.5 | 2×3×35 + 1×25 + 4×2.5 | 35 | 51.8 | 2,352 | 4,510 | 259 | |
| O2nGcekż-G2 2×3×50+1×35+7×2.5 | 2×3×50 + 1×35 + 7×2.5 | 50 | 58.4 | 3,384 | 5,960 | 292 | |
| O2nGcekż-G2 2×3×70+1×50+7×2.5 | 2×3×70 + 1×50 + 7×2.5 | 70 | 65.0 | 4,680 | 7,780 | 325 | |
| Configuration | Max. DC R @ 20 °C Ω/km | Current rating in air (A) | Current rating installed (A) | Mutual C pF/m ≈ | AC test V rms |
|---|---|---|---|---|---|
| 2×3×16 + 1×16 + 4×2.5 | 1.210 | 163 | 139 | 101 | 3,000 |
| 2×3×25 + 1×25 + 4×2.5 | 0.780 | 216 | 184 | 114 | 3,000 |
| 2×3×35 + 1×25 + 4×2.5 | 0.554 | 266 | 226 | 129 | 3,000 |
| 2×3×50 + 1×35 + 4×2.5 | 0.386 | 331 | 281 | 150 | 3,000 |
| 2×3×70 + 1×50 + 4×2.5 | 0.272 | 408 | 347 | 180 | 3,000 |
| 2×3×25 + 1×25 + 4×2.5 | 0.780 | 216 | 184 | 114 | 3,000 |
| 2×3×35 + 1×25 + 4×2.5 | 0.554 | 266 | 226 | 129 | 3,000 |
| 2×3×50 + 1×35 + 7×2.5 | 0.386 | 331 | 281 | 150 | 3,000 |
| 2×3×70 + 1×50 + 7×2.5 | 0.272 | 408 | 347 | 180 | 3,000 |
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 voltage test on 6 power cores & pilots | 3.0 kV rms (power) and 1.5 kV rms (pilot) for 5 minutes | Every drum |
| Paired phase DC resistance balance | Identical resistance within ±1 % between parallel twin phase cores | Every drum |
| Sample tests | ||
| Cyclic bending in Bretby handler radius | No conductor strand breakage or screen loss of contact | Per batch |
| Double-sheath tear & flame propagation | Passes PN-EN 60332-1-2 and PN-G-90100 tear strength | Type approval |
Marking & supply
Sheath marking
Technical documents
FAQ
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