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bending radius 7.5×d

8 Min Read
C PUR Design Integration: FLEXIFESTOON PUR characteristics (inherited): Outer sheath: PUR (polyurethane, compact) Insulation: Special TPE (superior elongation) Central unit: Textile (mechanical support) Weight: 25–30% lighter than standard rubber Diameter: 15–20% smaller than rubber equivalent Cost: +15–25% premium over rubber Service life: 10–15 years (extended) Screened design addition (new): Screen: Tinned copper braid (EMC shielding) Coverage: 80–90% (good EMC performance) Diameter impact: +2–3 mm (screen adds ~3 mm to diameter) Weight impact: +500 kg/km (braid + outer sheath) Cost: Additional +10–15% for screen layer Combined C PUR result: vs. Unscreened PUR (FLEXIFESTOON PUR): FLEXIFESTOON PUR: Minimal diameter/weight, no EMC C PUR: Slightly larger (screen added), excellent EMC Choice: PUR for maximum compactness (non-EMI environments) C PUR for VFD motors, confined spaces with EMC requirements vs. Standard rubber screened (GRDGCGÖU-J): GRDGCGÖU-J: Standard diameter, heavy, rubber durability C PUR: Compact diameter, lightweight, superior oil/chemical resistance Choice: GRDGCGÖU-J for simple temporary festoon C PUR for permanent industrial machine tool installation Nomenclature: FLEXIFESTOON® = Product family (flexible cable) C = Screen (copper braid, "C" from German "Schirm") PUR = Material (polyurethane jacket) Result: "FLEXIFESTOON C PUR" = Screened compact polyurethane cable
Technical Department
on17/06/2026

DR PN 689 P Highflex и DR CB 689 P Highflex: барабанные PUR Bus-кабели для Profinet, CAT 5 и CAN-Bus

DR PN 689 P Highflex и DR CB 689 P Highflex — это высокогибкие барабанные Bus-кабели PUR для передачи данных и промышленных сетевых сигналов в подвижных reeling applications. Серия включает reeling Profinet cable, reeling CAT 5 cable и reeling CAN-Bus cable. Кабели рассчитаны на работу в условиях регулярной намотки и размотки, имеют экранированную конструкцию, безгалогенное исполнение, маслостойкую оболочку TMPU и статус PFAS free.
7 Min Read
UNE 22511 — formally titled "Cables flexibles para minería subterránea con tensiones de 1,8/3 kV con aislamiento de caucho, sin armadura" (Flexible cables for underground mining, 1.8/3 kV, rubber-insulated, unarmoured) — is the definitive Spanish standard for heavy-duty power cables connecting underground mobile mining equipment to fixed electrical distribution networks. Published and maintained by AENOR (Asociación Española de Normalización y Certificación), it operates as a specialized overlay on IEC 60502-1, extending that base standard's electrical requirements with the stringent mechanical, safety, and flame-retardancy requirements specific to enclosed underground environments. Despite its Spanish origin, UNE 22511 enjoys a geographic reach far exceeding Iberia. The standard has been adopted — formally or by reference — across the major Spanish-speaking mining economies: Chile, Peru, Colombia, Bolivia, and Mexico, where AENOR-certified cables are accepted by national mining safety regulators as the primary qualification pathway for underground mobile equipment power supply cables. In Chile alone, UNE 22511 cables are installed across dozens of operations including major copper and coal mines. The standard's engineering DNA can be described in a single imperative: extreme dynamic flexibility combined with superior resistance to combined torsional and bending fatigue. This is not merely a performance aspiration — it is a structural requirement that shapes every material choice and geometric decision in the cable's construction. The logic proceeds as follows: Underground mobile equipment (continuous miners, shearers, shuttle cars) moves continuously and repeatedly during operation, dragging its power cable behind it or winding and unwinding it from a cable reel. This motion imposes cyclic bending, axial tension, and torsional loads on the cable simultaneously — a multi-axis fatigue regime of a severity not encountered in any other industrial cable application. Standard fixed-installation cables, even those classified as "flexible," are not designed for this loading regime and will fail in fatigue within weeks to months when installed in drag duty. Therefore, every structural element of a UNE 22511 cable — conductor wire diameter, insulation compound, earth core geometry, armour exclusion, sheath specification — is selected to maximize multi-axis fatigue endurance, not any single performance parameter. ⛏ The Founding Engineering Principle UNE 22511 is an unarmoured drag cable standard. The deliberate absence of any metallic armour — which might superficially seem to reduce robustness — is in fact the defining engineering choice that makes the standard viable. Steel wire or tape armour in a continuously torsionally-loaded cable acts as a progressive-failure torsional spring: each twist cycle accumulates irreversible plastic strain in the armour wires, leading to wire fractures within 10,000–30,000 cycles. For a shuttle car cable experiencing 80,000+ torsional cycles per year, armour represents not additional protection but a built-in scheduled failure mechanism. The UNE 22511 design eliminates this failure mode at source.
Technical Department
on17/06/2026

DR 724 P Spreader: PUR барабанный кабель для спредеров, моторных барабанов и контейнерных кранов

DR 724 P Spreader — это барабанный кабель PUR/TMPU для спредерных применений и тяжёлых динамических условий. Кабель предназначен для reeling applications с высокими механическими нагрузками, например для моторных барабанов в контейнерных кранах. Конструкция включает гибкие медные жилы класса 5, специальную полимерную изоляцию, центральный арамидный несущий элемент, внутреннюю оболочку PUR/TMPU, арамидную защитную сетку от скручивания и наружную оболочку PUR/TMPU чёрного цвета RAL 9005.
8 Min Read
BASKET SPREADER 750: Next-Generation Hoisting Cable Architecture The BASKET SPREADER 750 (3GSLTOE) represents a fundamental advancement in hoisting control cable design, specifically engineered for next-generation automated port crane systems operating under extreme environmental and operational constraints. Unlike the BASKET SPREADER 740's 300/500V AC specification, the 750 operates at 0.6/1kV AC with dual-voltage DC capability (0.9/1.8 kV)—a classification shift that enables: Higher power capacity – 2–3× greater amperage per conductor, enabling longer cable runs with lower voltage drop Medium-voltage infrastructure compatibility – Direct integration with port substation power distribution systems (0.6 kV = 600V three-phase industrial standard) DC dual-voltage operation – Simultaneous support for AC motor control and DC feedback/signaling circuits (0.9/1.8 kV DC margins) Extreme temperature capability – Operating range −50°C to +80°C (vs. SPREADER 740's −20°C to +60°C), addressing Arctic port terminals and tropical high-ambient scenarios Advanced insulation chemistry – GAALTHERM® 530 thermoplastic compound replaces standard PVC/PUR, delivering superior chemical resistance and thermal stability This cable bridges the gap between standard control cables (300/500V, limited temperature) and heavy industrial medium-voltage distribution cables, creating a purpose-built solution for modern automated gantry crane systems in global port terminals.
Technical Department
on17/06/2026

DR 730 P Highflex: высокогибкий барабанный кабель PUR/TMPU с UL/cUL AWM Style 21897 для тяжёлых динамических применений

DR 730 P Highflex — это высокогибкий барабанный кабель для тяжёлых механизмов и оборудования с высокими механическими нагрузками. Он применяется для моторных кабельных барабанов, подъёмников, транспортных систем, подвижных двигателей и сельскохозяйственных транспортных средств. Кабель имеет признание UL Style 21897, признание cUL, маркировку AWM I/II A/B 80°C 600V FT1 FT2, номинальное напряжение DIN VDE Uo/U 0,6/1 kV, напряжение UL 1000 V и напряжение cUL 600 V.