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Tinned copper flexible class 5

17 Min Read
Full technical breakdown Prysmian (Draka) CORDAFLEX SME — Arctic modification of (N)TSCGEWÖU 6/10 kV motorized drum cable, designed for reeling at extreme cold to -40°C. Standard rubber/PUR at such temperatures becomes brittle as glass and cracks on first guide roller bend. SME solves this with three engineering innovations: (1) cold-resistant polychloroprene outer sheath "5GM5 Arctic blend" with non-freezing plasticizers maintaining elasticity at -40°C; (2) reinforced tensile strength 20 N/mm² (vs standard 15), compensating lubricant thickening in drum gearboxes and jerks during winter starts; (3) micro-filtered EPR compound 3GI3 maintaining dielectric properties at -40°C without cracking. Temp range -40°C to +80°C (flexing), -50°C to +80°C (fixed). Winding speed up to 120 m/min. VDE 0250-813 (SME modification). Two import substitution paths: (1) FeiChun NTSCGEWÖU-Cold — certified equivalent with Arctic additives for Siberia/Canada; (2) КГЭ-ХЛ 6 kV — Russian GOST to -60°C, but mechanically weaker than SME and lower winding speeds.
Technical Department
on16/03/2026

Характеристики CORDAFLEX (SME): экскаваторный кабель (N)TSCGEWÖU 6/10kV для наматывания при -40°C — арктическая серия и аналог FeiChun

Full technical breakdown Prysmian (Draka) CORDAFLEX SME — Arctic modification of (N)TSCGEWÖU 6/10 kV motorized drum cable, designed for reeling at extreme cold to -40°C. Standard rubber/PUR at such temperatures becomes brittle as glass and cracks on first guide roller bend. SME solves this with three engineering innovations: (1) cold-resistant polychloroprene outer sheath “5GM5 Arctic blend” with non-freezing plasticizers maintaining elasticity at -40°C; (2) reinforced tensile strength 20 N/mm² (vs standard 15), compensating lubricant thickening in drum gearboxes and jerks during winter starts; (3) micro-filtered EPR compound 3GI3 maintaining dielectric properties at -40°C without cracking. Temp range -40°C to +80°C (flexing), -50°C to +80°C (fixed). Winding speed up to 120 m/min. VDE 0250-813 (SME modification). Two import substitution paths: (1) FeiChun NTSCGEWÖU-Cold — certified equivalent with Arctic additives for Siberia/Canada; (2) КГЭ-ХЛ 6 kV — Russian GOST to -60°C, but mechanically weaker than SME and lower winding speeds.
12 Min Read
Full technical breakdown Prysmian Draka BUFLEX XTREME 3×70+3×35/3 0.6/1 kV: specialized low-voltage reeling cable for mining excavators, drill rigs, draglines, and conveyors in open-pit and underground mining. Construction: 3 power cores 70 mm² (class 5 flexible copper) + 3 earth cores 35 mm² + 3 pilot/control cores, XLPE insulation 90°C, PUR outer sheath (oil/abrasion resistant, Shore A ~85–92), aramid (Kevlar) strength member for extreme mechanical stress: torsion ±360°/m, tension up to 5,000 N, abrasion >50,000 cycles. Operating temperature -35°C to +90°C standard, -40°C extended. Reeling speed up to 150 m/min. Minimum bending radius 6× OD. VDE 0250-812 certified. Russian GOST equivalent: КГЭ-Ш 0.6/1 kV (Flexible Shielded Mining Cable) per GOST 31945-2012 with additional aramid element and PUR sheath. Applications: open-pit (Kuzbass coal, Kursk Magnetic Anomaly iron ore, Ural copper), underground (Vorkuta coal, Perm potash). Cost: original BUFLEX XTREME €1,800–2,400/km vs Feichun FC-BUFLEX-XT €650–850/km (55–65% savings). Long-term import substitution strategy for Russian mining industry.
Technical Department
on16/03/2026

Draka BUFLEX XTREME 3×70+3×35/3 0.6/1кВ: гибкий барабанный кабель для горнодобывающих экскаваторов, КГЭ-Ш русский аналог и производство FeiChun Cable

Full technical breakdown Prysmian Draka BUFLEX XTREME 3×70+3×35/3 0.6/1 kV: specialized low-voltage reeling cable for mining excavators, drill rigs, draglines, and conveyors in open-pit and underground mining. Construction: 3 power cores 70 mm² (class 5 flexible copper) + 3 earth cores 35 mm² + 3 pilot/control cores, XLPE insulation 90°C, PUR outer sheath (oil/abrasion resistant, Shore A ~85–92), aramid (Kevlar) strength member for extreme mechanical stress: torsion ±360°/m, tension up to 5,000 N, abrasion >50,000 cycles. Operating temperature -35°C to +90°C standard, -40°C extended. Reeling speed up to 150 m/min. Minimum bending radius 6× OD. VDE 0250-812 certified. Russian GOST equivalent: КГЭ-Ш 0.6/1 kV (Flexible Shielded Mining Cable) per GOST 31945-2012 with additional aramid element and PUR sheath. Applications: open-pit (Kuzbass coal, Kursk Magnetic Anomaly iron ore, Ural copper), underground (Vorkuta coal, Perm potash). Cost: original BUFLEX XTREME €1,800–2,400/km vs Feichun FC-BUFLEX-XT €650–850/km (55–65% savings). Long-term import substitution strategy for Russian mining industry.