TUNNELFLEX-R-PUR HF represents a specialized category of halogen-free, flame-retardant flexible power cables engineered specifically for the demanding requirements of underground mining and tunneling operations. This cable combines advanced polyurethane (PUR) sheathing technology with integrated antitwisting protection to deliver exceptional mechanical durability, environmental resistance, and most importantly, enhanced safety through its halogen-free construction that significantly reduces toxic gas emissions during fire incidents.
TUNNELFLEX-R-PUR HF电缆是专为地下采矿和隧道作业的苛刻要求而设计的无卤阻燃柔性电力电缆。该电缆结合了先进的聚氨酯护套技术和集成的防扭转保护,提供卓越的机械耐久性、环境抵抗力,以及通过无卤结构在火灾事故中显著减少有毒气体排放的增强安全性。
In demanding industrial applications such as mining operations, crane systems, and material handling equipment, the selection of appropriate cable sheath materials directly influences operational reliability and safety. The sheath represents the cable’s first line of defense against mechanical stress, environmental degradation, and electrical hazards. This technical analysis examines how Ethylene Vinyl Acetate (EVA) sheath compounds improve the performance characteristics of NTSCGEWÖU-type trailing and reeling cables compared to standard Chlorinated Polyethylene (CPE) constructions, particularly regarding voltage withstand capabilities and vertical installation requirements.
The tunnelling and underground mining industries have traditionally relied on heavy-duty rubber-sheathed cables manufactured according to DIN VDE 0250 standards. However, a significant shift is occurring as polyurethane (PUR) sheathed cables, designated with the VDE code “11Y” and “12Y” (for TPE-E variants), are increasingly specified for demanding tunnel boring machine (TBM) applications and underground operations.
隧道和地下采矿行业传统上依赖于按照DIN VDE 0250标准生产的重型橡胶护套电缆。然而,随着聚氨酯(PUR)护套电缆(VDE代码为”11Y”,TPE-E变体为”12Y”)在隧道掘进机(TBM)和地下作业等高要求应用中越来越多被指定使用,一个重大转变正在发生。
UNE 21123 standard refers to the design and cross-sectional area specifications for cables used by utilities on power distribution circuits with voltage ratings up to and including 600/1000V (0.6/1kV). UNE standards are released by AENOR (Asociación Española de Normalización y Certificación), the Spanish Association for Standardisation and Certification. As AENOR is a member of ISO, IEC, and CENELEC, many of its standards are harmonized with European and international conventions.