EuroWire May 2022

Technology News

Higher power loads without changing cable cross-section

European standard EN 60204-1. The effect is particularly noticeable between 1 and 2.5mm 2 , which corresponds to the AWG equivalents AWG18 to AWG14. As the material now allows 90°C instead of the 75°C defined in NFPA 79, it is possible to increase the power load capacity by 100 per cent, from 7 to 14 A, for example, when using an AWG18 cable diameter. This increases operational safety for users. The new Lütze Superflex cables are suitable for highly flexible applications in drag chains, and allow torsion of 60°/m for unshielded cables and 30°/m for shielded cables. Depending on the specified amperage range, customers have the option to use smaller cable cross-sections for their applications. As well as reducing material input costs, this saves space in the drag chain or allows the use of a smaller drag chain. Friedrich Lütze GmbH www.luetze.com

systems are also specified for a higher temperature range. The new Lütze Superflex cables not only allow the use of higher-quality materials and a higher power load capacity without changing the cross-section, but also allow the cables to be used for 90°C applica tions according to the US standards NEC and NFPA 79, because of the higher UL approvals. NFPA 79 (National Fire Protec tion Association) is the equivalent to the

Automation specialist Lütze has opti mised its Superflex control and servo cable range with an approved tempera ture range of up to 90°C, allowing higher power loads without having to change the cable cross-section. The 90°C control cables with a PUR jacket for 300 V and 1,000 V rated voltage are new products in the Lütze range. The servo motor cables that were optimised for use in Siemens and Bosch-Rexroth

Lütze Superflex servo and control cables are now optimised to an approved temperature range up to 90°C

Technical Innovation for New Applications

Seamless Aluminium Sheathing for HV and EHV Cables

• Corrugated and smooth aluminium sheath • Seamless aluminium sheath with no weld • Light weight and good conductivity • Good environmental properties and proven reliability • Lowmaterial costs (standard CCR rod) • Continuous extrusion with no weld, stop marks or overlaps • Longer lengths and thicker wall

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May 2022