{"id":6079,"date":"2026-02-05T11:29:36","date_gmt":"2026-02-05T03:29:36","guid":{"rendered":"https:\/\/feichuncables.com\/blog\/?p=6079"},"modified":"2026-02-05T11:31:02","modified_gmt":"2026-02-05T03:31:02","slug":"tunnelflex-r-pur-hf-with-antitwisting-protection-1-kv","status":"publish","type":"post","link":"https:\/\/feichuncables.com\/blog\/tunnelflex-r-pur-hf-with-antitwisting-protection-1-kv\/","title":{"rendered":"TUNNELFLEX-R-PUR HF with Antitwisting Protection 1 KV"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Halogen-Free Flexible Cable for Mining and Tunneling<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">TUNNELFLEX\u9632\u626d\u8f6c\u65e0\u5364\u67d4\u6027\u7535\u7f06 1\u5343\u4f0f \u00b7 \u7528\u4e8e\u77ff\u5c71\u548c\u96a7\u9053\u5de5\u7a0b<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"dbd9a8\" data-has-transparency=\"true\" style=\"--dominant-color: #dbd9a8;\" loading=\"lazy\" decoding=\"async\" width=\"258\" height=\"628\" sizes=\"auto, (max-width: 258px) 100vw, 258px\" src=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/\u5fae\u4fe1\u56fe\u7247_20260204100947_577_34-1-258x628.avif\" alt=\"\" class=\"wp-image-6080 has-transparency\" title=\"\" srcset=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/\u5fae\u4fe1\u56fe\u7247_20260204100947_577_34-1-258x628.avif 258w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/\u5fae\u4fe1\u56fe\u7247_20260204100947_577_34-1-123x300.avif 123w, https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/\u5fae\u4fe1\u56fe\u7247_20260204100947_577_34-1.avif 316w\" \/><\/figure>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <meta name=\"description\" content=\"TUNNELFLEX-R-PUR HF 1 KV Halogen-Free Cable with Antitwisting Protection for Mining and Tunneling - Anhui Feichun Special Cable Co., Ltd\">\n    <meta name=\"keywords\" 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class=\"chinese-title\">TUNNELFLEX\u9632\u626d\u8f6c\u65e0\u5364\u67d4\u6027\u7535\u7f06 1\u5343\u4f0f \u00b7 \u7528\u4e8e\u77ff\u5c71\u548c\u96a7\u9053\u5de5\u7a0b<\/div>\n            <div class=\"company-info\">\n                <strong>Anhui Feichun Special Cable Co., Ltd.<\/strong><br>\n                <span style=\"font-size: 0.9em;\">\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8<\/span>\n            <\/div>\n        <\/div>\n    <\/header>\n\n    <div class=\"container\">\n        <section class=\"section\">\n            <h2>Product Overview \u4ea7\u54c1\u6982\u8ff0<\/h2>\n            <p class=\"intro-text\">\n                The 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.\n            <\/p>\n            <p class=\"intro-text\">\n                TUNNELFLEX-R-PUR HF\u7535\u7f06\u662f\u4e13\u4e3a\u5730\u4e0b\u91c7\u77ff\u548c\u96a7\u9053\u4f5c\u4e1a\u7684\u82db\u523b\u8981\u6c42\u800c\u8bbe\u8ba1\u7684\u65e0\u5364\u963b\u71c3\u67d4\u6027\u7535\u529b\u7535\u7f06\u3002\u8be5\u7535\u7f06\u7ed3\u5408\u4e86\u5148\u8fdb\u7684\u805a\u6c28\u916f\u62a4\u5957\u6280\u672f\u548c\u96c6\u6210\u7684\u9632\u626d\u8f6c\u4fdd\u62a4\uff0c\u63d0\u4f9b\u5353\u8d8a\u7684\u673a\u68b0\u8010\u4e45\u6027\u3001\u73af\u5883\u62b5\u6297\u529b\uff0c\u4ee5\u53ca\u901a\u8fc7\u65e0\u5364\u7ed3\u6784\u5728\u706b\u707e\u4e8b\u6545\u4e2d\u663e\u8457\u51cf\u5c11\u6709\u6bd2\u6c14\u4f53\u6392\u653e\u7684\u589e\u5f3a\u5b89\u5168\u6027\u3002\n            <\/p>\n\n            <div class=\"safety-highlight\">\n                <h3>Safety Innovation: Halogen-Free Technology \u5b89\u5168\u521b\u65b0\uff1a\u65e0\u5364\u6280\u672f<\/h3>\n                <p>\n                    According to international fire safety research, halogen-free cables meeting IEC 60754 standards produce dramatically less toxic and corrosive gases compared to conventional PVC cables during combustion. When PVC-based cables burn, they release hydrogen chloride (HCl), creating dense black smoke and corrosive acid gases that can incapacitate evacuees at concentrations as low as 500 ppm and corrode electronic equipment within hours. In contrast, HFFR (Halogen-Free Flame Retardant) cables like the TUNNELFLEX-R-PUR HF emit minimal smoke with a halogen acid content below 5 mg\/g and maintain pH values above 4.3, ensuring clearer visibility for evacuation and reduced equipment damage in confined underground environments.\n                <\/p>\n                <p style=\"margin-top: 10px;\">\n                    \u6839\u636e\u56fd\u9645\u6d88\u9632\u5b89\u5168\u7814\u7a76\uff0c\u7b26\u5408IEC 60754\u6807\u51c6\u7684\u65e0\u5364\u7535\u7f06\u5728\u71c3\u70e7\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u7684\u6709\u6bd2\u548c\u8150\u8680\u6027\u6c14\u4f53\u8fdc\u5c11\u4e8e\u4f20\u7edfPVC\u7535\u7f06\u3002PVC\u57fa\u7535\u7f06\u71c3\u70e7\u65f6\u91ca\u653e\u6c2f\u5316\u6c22(HCl)\uff0c\u4ea7\u751f\u6d53\u5bc6\u9ed1\u70df\u548c\u8150\u8680\u6027\u9178\u6027\u6c14\u4f53\uff0c\u5728\u6d53\u5ea6\u4f4e\u81f3500 ppm\u65f6\u5c31\u80fd\u4f7f\u758f\u6563\u4eba\u5458\u5931\u53bb\u884c\u52a8\u80fd\u529b\uff0c\u5e76\u5728\u6570\u5c0f\u65f6\u5185\u8150\u8680\u7535\u5b50\u8bbe\u5907\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cTUNNELFLEX-R-PUR HF\u7b49HFFR\uff08\u65e0\u5364\u963b\u71c3\uff09\u7535\u7f06\u6392\u653e\u7684\u70df\u96fe\u6781\u5c11\uff0c\u5364\u9178\u542b\u91cf\u4f4e\u4e8e5 mg\/g\uff0cpH\u503c\u4fdd\u6301\u57284.3\u4ee5\u4e0a\uff0c\u786e\u4fdd\u5728\u5c01\u95ed\u7684\u5730\u4e0b\u73af\u5883\u4e2d\u6709\u66f4\u6e05\u6670\u7684\u758f\u6563\u80fd\u89c1\u5ea6\u548c\u51cf\u5c11\u8bbe\u5907\u635f\u574f\u3002\n                <\/p>\n            <\/div>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Applications \u5e94\u7528\u573a\u5408<\/h2>\n            <p>\n                The TUNNELFLEX-R-PUR HF cable is specifically designed for power supply to mobile equipment operating in underground mining and tunneling environments where there is high risk of mechanical damage from rock falls, equipment impact, cable dragging, and severe environmental conditions. Industry research on mining cables indicates that these applications demand exceptional abrasion resistance, tear strength, and protection against oil, chemicals, and moisture while maintaining flexibility for frequent movement and reeling operations.\n            <\/p>\n            <div class=\"specs-grid\">\n                <div class=\"spec-card safety\">\n                    <h4>Underground Mining Equipment \u5730\u4e0b\u91c7\u77ff\u8bbe\u5907<\/h4>\n                    <p>Mobile mining machinery including continuous miners, load-haul-dump (LHD) vehicles, roof bolters, and shuttle cars operating in confined underground spaces where fire safety and smoke emissions are critical concerns for worker safety.<\/p>\n                <\/div>\n                <div class=\"spec-card safety\">\n                    <h4>Tunnel Boring Machines \u96a7\u9053\u6398\u8fdb\u673a<\/h4>\n                    <p>Tunnel boring machines (TBMs) and roadheaders used in civil engineering and mining tunnel construction, requiring cables capable of withstanding continuous mechanical stress while being dragged through rough tunnel surfaces.<\/p>\n                <\/div>\n                <div class=\"spec-card safety\">\n                    <h4>Mobile Conveyor Systems \u79fb\u52a8\u5f0f\u8f93\u9001\u7cfb\u7edf<\/h4>\n                    <p>Portable conveyor belts and material handling systems in mines and tunnels where cables must flex repeatedly during equipment repositioning while resisting abrasion from contact with rock, coal dust, and mineral materials.<\/p>\n                <\/div>\n                <div class=\"spec-card safety\">\n                    <h4>Drilling Equipment \u94bb\u5b54\u8bbe\u5907<\/h4>\n                    <p>Mobile drilling rigs and rock drills used for exploration, ventilation shaft construction, and production drilling where cables experience torsional stress, pulling forces, and exposure to drilling fluids and rock fragments.<\/p>\n                <\/div>\n                <div class=\"spec-card safety\">\n                    <h4>Emergency &#038; Safety Systems \u5e94\u6025\u4e0e\u5b89\u5168\u7cfb\u7edf<\/h4>\n                    <p>Power supply for emergency lighting, ventilation fans, and safety monitoring equipment in tunnels where the halogen-free properties ensure that smoke and toxic gas emissions do not compromise evacuation procedures during fire emergencies.<\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Standards &#038; Approvals \u6807\u51c6\u4e0e\u8ba4\u8bc1<\/h2>\n            <div class=\"standards-list\">\n                <ul>\n                    <li><strong>DIN EN 60228 \/ IEC 60228 \/ VDE 0295<\/strong> &#8211; Conductor specifications defining Class 5 flexible copper conductor construction for optimal flexibility in dynamic applications<\/li>\n                    <li><strong>DIN VDE 0298-300<\/strong> &#8211; Core identification standards ensuring proper color coding for safe installation and maintenance<\/li>\n                    <li><strong>IEC 60754-1<\/strong> &#8211; Halogen-free verification: Determination of halogen acid gas content (must be \u2264 5 mg\/g for HFFR classification)<\/li>\n                    <li><strong>IEC 60754-2<\/strong> &#8211; Corrosivity testing: Acidity measured by pH value (\u2265 4.3) and conductivity (\u2264 10 \u00b5S\/mm) to verify non-corrosive combustion products<\/li>\n                    <li><strong>DIN EN 60332-1-2 \/ IEC 60332-1-2<\/strong> &#8211; Fire performance testing for flame propagation on single vertical insulated wire or cable, ensuring self-extinguishing properties<\/li>\n                    <li><strong>DIN VDE 0298-3<\/strong> &#8211; Mechanical parameters including bending radius requirements and installation guidelines<\/li>\n                <\/ul>\n            <\/div>\n            <p class=\"note\">\n                Note: Halogen-free cables meeting IEC 60754 standards are mandatory in many jurisdictions for underground mining and tunnel construction to minimize toxic gas release and corrosion during fire incidents. The TUNNELFLEX-R-PUR HF complies with all relevant European and international safety standards for confined space applications.\n            <\/p>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Cable Construction with Antitwisting Protection \u9632\u626d\u8f6c\u4fdd\u62a4\u7535\u7f06\u7ed3\u6784<\/h2>\n            <p>\n                The TUNNELFLEX-R-PUR HF features an advanced multi-layer construction optimized for the extreme mechanical stresses encountered in mining and tunneling operations. The key innovation is the synthetic mesh antitwisting layer (Layer 7) that prevents cable deformation and conductor damage during high-speed reeling operations up to 120 m\/min. This protection is critical for mobile equipment that requires frequent cable extension and retraction.\n            <\/p>\n            \n            <div class=\"construction-diagram\">\n                <h3 style=\"margin-top: 0; margin-bottom: 20px;\">Layer-by-Layer Construction \u9010\u5c42\u7ed3\u6784<\/h3>\n                \n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">1<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Conductor \u5bfc\u4f53<\/h4>\n                        <p>Plain copper, flexible, Class 5 according to IEC 60228. The Class 5 construction provides maximum flexibility with conductor strands fine enough to withstand millions of flexing cycles without fatigue failure.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">2<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Core Insulation \u82af\u7ebf\u7edd\u7f18<\/h4>\n                        <p>XLPE (Cross-Linked Polyethylene) special compound with color coding: Brown &#8211; Black &#8211; Grey for phase conductors. XLPE provides excellent electrical properties with temperature rating up to 90\u00b0C continuous operation and 250\u00b0C short-circuit capability.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">3<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Core Arrangement \u82af\u7ebf\u6392\u5217<\/h4>\n                        <p>Phase cores laid up with earth cores in the interstices, optimizing cable roundness and mechanical strength while minimizing overall diameter for easier handling and installation.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">4<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Earth Core \u63a5\u5730\u82af<\/h4>\n                        <p>Plain copper conductor, flexible, Class 5 with Yellow\/Green insulation. The earth cores positioned in the interstices provide comprehensive grounding protection and fault current capacity.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">5<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Control Cores (Optional) \u63a7\u5236\u82af\uff08\u53ef\u9009\uff09<\/h4>\n                        <p>Additional control conductors for signaling and control applications, integrated within the same cable assembly to reduce the number of separate cables required for mobile equipment operation.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">6<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Inner Sheath \u5185\u62a4\u5957<\/h4>\n                        <p>HFFR (Halogen-Free Flame Retardant) thermoplastic polyurethane compound. This layer provides primary mechanical protection for the cores while maintaining the halogen-free properties of the cable assembly.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">7<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Antitwisting Protection \u9632\u626d\u8f6c\u4fdd\u62a4<\/h4>\n                        <p><strong>Synthetic mesh reinforcement<\/strong> &#8211; This critical layer prevents cable twisting and deformation during high-speed reeling operations (up to 120 m\/min), maintaining cable integrity and preventing conductor damage that could lead to electrical faults or fires.<\/p>\n                    <\/div>\n                <\/div>\n\n                <div class=\"construction-item\">\n                    <div class=\"construction-number\">8<\/div>\n                    <div class=\"construction-desc\">\n                        <h4>Outer Sheath \u5916\u62a4\u5957<\/h4>\n                        <p>HFFR thermoplastic polyurethane compound with exceptional properties: abrasion resistant, tear resistant, oil &#038; chemical resistant, and hydrolysis resistant. The polyurethane formulation is specifically designed for underground mining conditions where exposure to mineral oils, hydraulic fluids, and aggressive chemicals is common.<\/p>\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Technical Parameters \u6280\u672f\u53c2\u6570<\/h2>\n            \n            <h3>Thermal Parameters \u70ed\u53c2\u6570<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Parameter \u53c2\u6570<\/th>\n                            <th>Value \u6570\u503c<\/th>\n                            <th>Notes \u5907\u6ce8<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Max. conductor temperature \u6700\u5927\u5bfc\u4f53\u6e29\u5ea6<\/td>\n                            <td>90\u00b0C<\/td>\n                            <td>Continuous operation \u8fde\u7eed\u8fd0\u884c<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Max. conductor temperature at short circuit \u77ed\u8def\u65f6\u6700\u5927\u5bfc\u4f53\u6e29\u5ea6<\/td>\n                            <td>250\u00b0C<\/td>\n                            <td>Short-term condition (5 seconds) \u77ed\u65f6\u72b6\u6001<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Ambient temperature fixed installation (min) \u56fa\u5b9a\u5b89\u88c5\u6700\u4f4e\u73af\u5883\u6e29\u5ea6<\/td>\n                            <td>-40\u00b0C<\/td>\n                            <td>Static application \u9759\u6001\u5e94\u7528<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Ambient temperature fixed installation (max) \u56fa\u5b9a\u5b89\u88c5\u6700\u9ad8\u73af\u5883\u6e29\u5ea6<\/td>\n                            <td>80\u00b0C<\/td>\n                            <td>Static application \u9759\u6001\u5e94\u7528<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Ambient temperature flexible installation (min) \u79fb\u52a8\u5b89\u88c5\u6700\u4f4e\u73af\u5883\u6e29\u5ea6<\/td>\n                            <td>-30\u00b0C<\/td>\n                            <td>Dynamic\/mobile application \u52a8\u6001\/\u79fb\u52a8\u5e94\u7528<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Ambient temperature flexible installation (max) \u79fb\u52a8\u5b89\u88c5\u6700\u9ad8\u73af\u5883\u6e29\u5ea6<\/td>\n                            <td>80\u00b0C<\/td>\n                            <td>Dynamic\/mobile application \u52a8\u6001\/\u79fb\u52a8\u5e94\u7528<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <h3>Chemical &#038; Fire Safety Parameters \u5316\u5b66\u4e0e\u6d88\u9632\u5b89\u5168\u53c2\u6570<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Property \u6027\u80fd<\/th>\n                            <th>Performance \u8868\u73b0<\/th>\n                            <th>Standard \u6807\u51c6<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Fire behaviour \u71c3\u70e7\u884c\u4e3a<\/td>\n                            <td><span class=\"badge badge-safety\">Self-Extinguishing \u81ea\u7184\u6027<\/span><\/td>\n                            <td>Per IEC 60332-1-2<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Flame retardant \u963b\u71c3\u6027<\/td>\n                            <td>Yes &#8211; In accordance with EN\/IEC 60332-1-2<\/td>\n                            <td>IEC 60332-1-2<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Halogen free \u65e0\u5364<\/td>\n                            <td><span class=\"badge badge-safety\">Yes &#8211; HFFR Certified<\/span><\/td>\n                            <td>IEC 60754-1 (\u2264 5 mg\/g)<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Halogen acid content \u5364\u9178\u542b\u91cf<\/td>\n                            <td>\u2264 5 mg\/g<\/td>\n                            <td>IEC 60754-1<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>pH value (acidity) pH\u503c\uff08\u9178\u5ea6\uff09<\/td>\n                            <td>\u2265 4.3<\/td>\n                            <td>IEC 60754-2<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Conductivity \u5bfc\u7535\u7387<\/td>\n                            <td>\u2264 10 \u00b5S\/mm<\/td>\n                            <td>IEC 60754-2<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Smoke density \u70df\u5bc6\u5ea6<\/td>\n                            <td>Low smoke emission \u4f4e\u70df\u6392\u653e<\/td>\n                            <td>Typical for LSZH cables<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <h3>Mechanical Parameters \u673a\u68b0\u53c2\u6570<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Parameter \u53c2\u6570<\/th>\n                            <th>Value \u6570\u503c<\/th>\n                            <th>Significance \u91cd\u8981\u6027<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Maximum travel speed \u6700\u5927\u79fb\u52a8\u901f\u5ea6<\/td>\n                            <td><strong>120 m\/min<\/strong><\/td>\n                            <td>Higher than standard tunneling cables (typically 60 m\/min)<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Bending radius (fixed installation) \u5f2f\u66f2\u534a\u5f84\uff08\u56fa\u5b9a\u5b89\u88c5\uff09<\/td>\n                            <td>6 \u00d7 D (Acc. to VDE 0298-3)<\/td>\n                            <td>Where D is the cable outer diameter<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Bending radius (on drums) \u5f2f\u66f2\u534a\u5f84\uff08\u5377\u7b52\u4e0a\uff09<\/td>\n                            <td>10 \u00d7 D<\/td>\n                            <td>Protects cable during reeling operations<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Abrasion resistance \u6297\u78e8\u635f\u6027<\/td>\n                            <td>Excellent \u4f18\u5f02<\/td>\n                            <td>Polyurethane sheath designed for harsh underground conditions<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Tear resistance \u6297\u6495\u88c2\u6027<\/td>\n                            <td>High \u9ad8<\/td>\n                            <td>Critical for preventing cable damage from sharp rocks<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Oil resistance \u8010\u6cb9\u6027<\/td>\n                            <td>Yes \u662f<\/td>\n                            <td>Resists mineral oils, hydraulic fluids, and lubricants<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Chemical resistance \u8010\u5316\u5b66\u6027<\/td>\n                            <td>Good \u826f\u597d<\/td>\n                            <td>Polyurethane formulation resists most mining chemicals<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Hydrolysis resistance \u6297\u6c34\u89e3\u6027<\/td>\n                            <td>Excellent \u4f18\u5f02<\/td>\n                            <td>Maintains properties in wet underground conditions<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <h3>Electrical Parameters \u7535\u6c14\u53c2\u6570<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Parameter \u53c2\u6570<\/th>\n                            <th>Value \u6570\u503c<\/th>\n                            <th>Notes \u5907\u6ce8<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>Rated voltage U\u2080\/U (U\u2098) \u989d\u5b9a\u7535\u538b<\/td>\n                            <td><span class=\"badge badge-standard\">0.6\/1 (1.2) kV<\/span><\/td>\n                            <td>Standard low voltage rating for mining equipment<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Max. operating voltage U\u2098 \u6700\u5927\u5de5\u4f5c\u7535\u538b<\/td>\n                            <td>1.2 kV<\/td>\n                            <td>Maximum continuous voltage<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>Test voltage \u8bd5\u9a8c\u7535\u538b<\/td>\n                            <td>3.5 kV<\/td>\n                            <td>Factory acceptance test voltage<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Detailed Cable Specifications \u8be6\u7ec6\u7535\u7f06\u89c4\u683c<\/h2>\n            <p>\n                The following tables provide comprehensive technical specifications for various cable configurations. All cables feature the same advanced construction with antitwisting protection and halogen-free materials. The configurations are optimized for different power requirements in mining and tunneling applications.\n            <\/p>\n\n            <h3>TUNNELFLEX-R-PUR HF 0.6\/1kV &#8211; Standard Configurations<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Construction<br>\u6784\u9020<\/th>\n                            <th>Conductor \u00d8<br>\u5bfc\u4f53\u76f4\u5f84<br>(mm)<\/th>\n                            <th>Cable \u00d8 (min)<br>\u7535\u7f06\u6700\u5c0f\u5916\u5f84<br>(mm)<\/th>\n                            <th>Cable \u00d8 (max)<br>\u7535\u7f06\u6700\u5927\u5916\u5f84<br>(mm)<\/th>\n                            <th>Cable Weight<br>\u7535\u7f06\u91cd\u91cf<br>(kg\/km)<\/th>\n                            <th>Max. Tensile<br>\u6700\u5927\u6297\u62c9\u5f3a\u5ea6<br>(N)<\/th>\n                            <th>Bending Radius<br>\u5f2f\u66f2\u534a\u5f84<br>(mm)<\/th>\n                            <th>Current<br>\u8f7d\u6d41\u91cf<br>(A)<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>4G10<\/td>\n                            <td>4.0<\/td>\n                            <td>18.5<\/td>\n                            <td>20.5<\/td>\n                            <td>630<\/td>\n                            <td>800<\/td>\n                            <td>123<\/td>\n                            <td>74<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>4G16<\/td>\n                            <td>5.1<\/td>\n                            <td>21.5<\/td>\n                            <td>23.5<\/td>\n                            <td>930<\/td>\n                            <td>1,280<\/td>\n                            <td>141<\/td>\n                            <td>99<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;25+3G6<\/td>\n                            <td>6.5<\/td>\n                            <td>24.5<\/td>\n                            <td>26.5<\/td>\n                            <td>1,240<\/td>\n                            <td>1,500<\/td>\n                            <td>159<\/td>\n                            <td>131<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;35+3G6<\/td>\n                            <td>7.5<\/td>\n                            <td>26.0<\/td>\n                            <td>28.5<\/td>\n                            <td>1,520<\/td>\n                            <td>2,100<\/td>\n                            <td>171<\/td>\n                            <td>162<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;50+3G10<\/td>\n                            <td>9.1<\/td>\n                            <td>30.0<\/td>\n                            <td>32.5<\/td>\n                            <td>2,130<\/td>\n                            <td>3,000<\/td>\n                            <td>195<\/td>\n                            <td>202<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;70+3G16<\/td>\n                            <td>10.8<\/td>\n                            <td>34.0<\/td>\n                            <td>37.0<\/td>\n                            <td>3,000<\/td>\n                            <td>4,200<\/td>\n                            <td>222<\/td>\n                            <td>250<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;95+3G16<\/td>\n                            <td>12.1<\/td>\n                            <td>37.5<\/td>\n                            <td>40.5<\/td>\n                            <td>3,710<\/td>\n                            <td>5,700<\/td>\n                            <td>243<\/td>\n                            <td>301<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;120+3G25<\/td>\n                            <td>14.3<\/td>\n                            <td>42.5<\/td>\n                            <td>45.5<\/td>\n                            <td>4,830<\/td>\n                            <td>7,200<\/td>\n                            <td>273<\/td>\n                            <td>352<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;150+3G25<\/td>\n                            <td>16.1<\/td>\n                            <td>47.5<\/td>\n                            <td>50.5<\/td>\n                            <td>5,830<\/td>\n                            <td>9,000<\/td>\n                            <td>303<\/td>\n                            <td>404<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;185+3G35<\/td>\n                            <td>17.5<\/td>\n                            <td>52.0<\/td>\n                            <td>55.0<\/td>\n                            <td>7,050<\/td>\n                            <td>11,100<\/td>\n                            <td>330<\/td>\n                            <td>461<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;240+3G50<\/td>\n                            <td>19.9<\/td>\n                            <td>58.0<\/td>\n                            <td>61.0<\/td>\n                            <td>9,240<\/td>\n                            <td>14,400<\/td>\n                            <td>366<\/td>\n                            <td>540<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <h3>TUNNELFLEX-R-PUR HF 0.6\/1kV &#8211; With Control Cores \u5e26\u63a7\u5236\u82af<\/h3>\n            <div class=\"table-responsive\">\n                <table>\n                    <thead>\n                        <tr>\n                            <th>Construction<br>\u6784\u9020<\/th>\n                            <th>Conductor \u00d8<br>\u5bfc\u4f53\u76f4\u5f84<br>(mm)<\/th>\n                            <th>Cable \u00d8 (min)<br>\u7535\u7f06\u6700\u5c0f\u5916\u5f84<br>(mm)<\/th>\n                            <th>Cable \u00d8 (max)<br>\u7535\u7f06\u6700\u5927\u5916\u5f84<br>(mm)<\/th>\n                            <th>Cable Weight<br>\u7535\u7f06\u91cd\u91cf<br>(kg\/km)<\/th>\n                            <th>Max. Tensile<br>\u6700\u5927\u6297\u62c9\u5f3a\u5ea6<br>(N)<\/th>\n                            <th>Bending Radius<br>\u5f2f\u66f2\u534a\u5f84<br>(mm)<\/th>\n                            <th>Current<br>\u8f7d\u6d41\u91cf<br>(A)<\/th>\n                        <\/tr>\n                    <\/thead>\n                    <tbody>\n                        <tr>\n                            <td>3&#215;25+3G6+2&#215;1<\/td>\n                            <td>6.5<\/td>\n                            <td>25.5<\/td>\n                            <td>28.0<\/td>\n                            <td>1,260<\/td>\n                            <td>1,500<\/td>\n                            <td>168<\/td>\n                            <td>131<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;35+3G6+2&#215;1.5<\/td>\n                            <td>7.5<\/td>\n                            <td>26.5<\/td>\n                            <td>29.0<\/td>\n                            <td>1,560<\/td>\n                            <td>2,100<\/td>\n                            <td>174<\/td>\n                            <td>162<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;50+3G10+2&#215;1.5<\/td>\n                            <td>9.1<\/td>\n                            <td>30.0<\/td>\n                            <td>32.5<\/td>\n                            <td>2,160<\/td>\n                            <td>3,000<\/td>\n                            <td>195<\/td>\n                            <td>202<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;70+3G16+2&#215;1.5<\/td>\n                            <td>10.8<\/td>\n                            <td>34.0<\/td>\n                            <td>37.0<\/td>\n                            <td>3,030<\/td>\n                            <td>4,200<\/td>\n                            <td>222<\/td>\n                            <td>250<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;95+3G16+2&#215;1.5<\/td>\n                            <td>12.1<\/td>\n                            <td>37.5<\/td>\n                            <td>40.5<\/td>\n                            <td>3,740<\/td>\n                            <td>5,700<\/td>\n                            <td>243<\/td>\n                            <td>301<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;120+3G25+2&#215;1.5<\/td>\n                            <td>14.3<\/td>\n                            <td>42.5<\/td>\n                            <td>45.5<\/td>\n                            <td>4,860<\/td>\n                            <td>7,200<\/td>\n                            <td>273<\/td>\n                            <td>352<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;150+3G25+2&#215;1.5<\/td>\n                            <td>16.1<\/td>\n                            <td>47.5<\/td>\n                            <td>50.5<\/td>\n                            <td>5,860<\/td>\n                            <td>9,000<\/td>\n                            <td>303<\/td>\n                            <td>404<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;185+3G35+2&#215;1.5<\/td>\n                            <td>17.5<\/td>\n                            <td>52.0<\/td>\n                            <td>55.0<\/td>\n                            <td>7,080<\/td>\n                            <td>11,100<\/td>\n                            <td>330<\/td>\n                            <td>461<\/td>\n                        <\/tr>\n                        <tr>\n                            <td>3&#215;240+3G50+2&#215;1.5<\/td>\n                            <td>19.9<\/td>\n                            <td>58.0<\/td>\n                            <td>61.0<\/td>\n                            <td>9,270<\/td>\n                            <td>14,400<\/td>\n                            <td>366<\/td>\n                            <td>540<\/td>\n                        <\/tr>\n                    <\/tbody>\n                <\/table>\n            <\/div>\n\n            <p class=\"note\">\n                Note: Control cores provide additional conductors for signaling, instrumentation, and control circuit applications. The 2&#215;1 mm\u00b2 and 2&#215;1.5 mm\u00b2 control cores are integrated within the cable assembly, reducing the need for separate control cables and simplifying installation in mobile mining equipment.\n            <\/p>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Technical Advantages \u6280\u672f\u4f18\u52bf<\/h2>\n            <p>\n                The TUNNELFLEX-R-PUR HF cable incorporates several critical engineering features that distinguish it from conventional mining cables and provide measurable safety and operational benefits. Research on halogen-free cable technology and polyurethane materials demonstrates the superior performance of this cable design in underground mining and tunneling environments.\n            <\/p>\n            <div class=\"specs-grid\">\n                <div class=\"spec-card safety\">\n                    <h4>Enhanced Fire Safety \u589e\u5f3a\u6d88\u9632\u5b89\u5168<\/h4>\n                    <p>Halogen-free construction meeting IEC 60754 standards produces up to 90% less toxic gas emissions compared to PVC cables during combustion. The low smoke emission improves visibility during evacuation, while the non-corrosive combustion products (pH \u2265 4.3) protect expensive mining equipment and electronics from acid gas damage.<\/p>\n                <\/div>\n                <div class=\"spec-card highlight\">\n                    <h4>Antitwisting Protection \u9632\u626d\u8f6c\u4fdd\u62a4<\/h4>\n                    <p>The integrated synthetic mesh layer (Layer 7) prevents cable twisting and deformation during high-speed reeling operations up to 120 m\/min &#8211; double the speed of standard tunneling cables (60 m\/min). This protection extends cable service life by preventing conductor damage and insulation failure caused by torsional stress.<\/p>\n                <\/div>\n                <div class=\"spec-card highlight\">\n                    <h4>Superior Mechanical Durability \u5353\u8d8a\u673a\u68b0\u8010\u4e45\u6027<\/h4>\n                    <p>Polyurethane outer sheath provides exceptional resistance to abrasion, tearing, and mechanical damage from rock contact and equipment impact. Industry testing shows polyurethane cables demonstrate 3-5 times greater abrasion resistance compared to conventional rubber or PVC sheathed cables in mining applications.<\/p>\n                <\/div>\n                <div class=\"spec-card highlight\">\n                    <h4>Chemical &#038; Oil Resistance \u5316\u5b66\u548c\u8010\u6cb9\u6027<\/h4>\n                    <p>Advanced polyurethane formulation resists mineral oils, hydraulic fluids, diesel fuel, lubricants, and most chemicals encountered in mining operations. The excellent hydrolysis resistance ensures the cable maintains its properties even in continuously wet underground conditions.<\/p>\n                <\/div>\n                <div class=\"spec-card highlight\">\n                    <h4>Wide Temperature Range \u5bbd\u6e29\u5ea6\u8303\u56f4<\/h4>\n                    <p>Operating temperature range from -30\u00b0C to +80\u00b0C for flexible installations accommodates extreme conditions from permafrost mining to hot underground coal mines. The 90\u00b0C conductor temperature rating provides substantial thermal headroom for high current-carrying capacity.<\/p>\n                <\/div>\n                <div class=\"spec-card safety\">\n                    <h4>Regulatory Compliance \u6cd5\u89c4\u5408\u89c4<\/h4>\n                    <p>Full compliance with European and international standards including IEC 60754 (halogen-free), IEC 60332-1-2 (flame retardant), and DIN VDE requirements ensures the cable meets or exceeds safety regulations in all major mining jurisdictions worldwide.<\/p>\n                <\/div>\n            <\/div>\n        <\/section>\n\n        <section class=\"section\">\n            <h2>Halogen-Free Technology: Safety Science \u65e0\u5364\u6280\u672f\uff1a\u5b89\u5168\u79d1\u5b66<\/h2>\n            <p>\n                Understanding the technical basis for halogen-free cable requirements is essential for mining and tunneling engineers. Research published by cable industry organizations and fire safety laboratories demonstrates the dramatic safety improvements achieved by eliminating halogen-containing materials from cable construction.\n            <\/p>\n\n            <div class=\"highlight-box\">\n                <h3>Why Halogen-Free Matters in Confined Spaces \u4e3a\u4ec0\u4e48\u5728\u53d7\u9650\u7a7a\u95f4\u4e2d\u65e0\u5364\u5f88\u91cd\u8981<\/h3>\n                <p>\n                    When conventional PVC cables burn, they release hydrogen chloride (HCl) gas, which combines with moisture in the air and human respiratory systems to form hydrochloric acid. According to fire safety research, HCl concentrations as low as 500 ppm can incapacitate evacuees within minutes, while concentrations above 1,000 ppm can be immediately lethal. In confined underground environments like mine tunnels, these toxic gases accumulate rapidly and cannot be dispersed by natural ventilation.\n                <\/p>\n                <p style=\"margin-top: 10px;\">\n                    Additionally, the corrosive nature of halogen acid gases causes severe damage to electronic equipment, control systems, and metal infrastructure. Fire incident reports from underground facilities show that even minor cable fires involving PVC cables can result in millions of dollars in equipment replacement costs due to acid gas corrosion, far exceeding the direct fire damage.\n                <\/p>\n                <p style=\"margin-top: 10px;\">\n                    In contrast, HFFR cables like the TUNNELFLEX-R-PUR HF use polyurethane and polyethylene materials that contain no halogens. When these materials burn, they produce primarily carbon dioxide and water vapor with minimal toxic gas generation. The IEC 60754-1 test measures halogen acid gas content, requiring less than 5 mg\/g for halogen-free classification &#8211; HFFR cables typically test at 1-2 mg\/g, representing a 90-95% reduction compared to PVC cables which can release 250-350 mg\/g of halogen acids.\n                <\/p>\n            <\/div>\n\n            <div class=\"comparison-table\">\n                <h3>PVC vs HFFR Cable Comparison in Fire Scenarios PVC\u4e0eHFFR\u7535\u7f06\u706b\u707e\u573a\u666f\u5bf9\u6bd4<\/h3>\n                <div class=\"table-responsive\">\n                    <table>\n                        <thead>\n                            <tr>\n                                <th>Property \u6027\u80fd<\/th>\n                                <th>PVC Cable PVC\u7535\u7f06<\/th>\n                                <th>HFFR Cable (TUNNELFLEX) HFFR\u7535\u7f06<\/th>\n                            <\/tr>\n                        <\/thead>\n                        <tbody>\n                            <tr>\n                                <td>Halogen acid content \u5364\u9178\u542b\u91cf<\/td>\n                                <td>250-350 mg\/g<\/td>\n                                <td>&lt; 5 mg\/g (typically 1-2 mg\/g)<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>pH value pH\u503c<\/td>\n                                <td>\u2264 1.5 (highly acidic) \u9ad8\u9178\u6027<\/td>\n                                <td>\u2265 4.3 (near neutral) \u63a5\u8fd1\u4e2d\u6027<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>Smoke density \u70df\u5bc6\u5ea6<\/td>\n                                <td>Dense black smoke \u6d53\u5bc6\u9ed1\u70df<\/td>\n                                <td>Low smoke, better visibility \u4f4e\u70df\uff0c\u80fd\u89c1\u5ea6\u66f4\u597d<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>Toxic gas emissions \u6709\u6bd2\u6c14\u4f53\u6392\u653e<\/td>\n                                <td>High (HCl, HBr) \u9ad8\uff08\u6c2f\u5316\u6c22\u3001\u6eb4\u5316\u6c22\uff09<\/td>\n                                <td>Minimal (CO\u2082, H\u2082O primarily) \u6781\u5c11\uff08\u4e3b\u8981\u662f\u4e8c\u6c27\u5316\u78b3\u3001\u6c34\uff09<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>Equipment corrosion \u8bbe\u5907\u8150\u8680<\/td>\n                                <td>Severe acid gas damage \u4e25\u91cd\u9178\u6027\u6c14\u4f53\u635f\u5bb3<\/td>\n                                <td>Minimal corrosion \u6781\u5c11\u8150\u8680<\/td>\n                            <\/tr>\n                            <tr>\n                                <td>Evacuation time impact \u758f\u6563\u65f6\u95f4\u5f71\u54cd<\/td>\n                                <td>Reduced visibility &#038; breathing difficulty \u80fd\u89c1\u5ea6\u964d\u4f4e\u548c\u547c\u5438\u56f0\u96be<\/td>\n                                <td>Clearer visibility, less respiratory hazard \u66f4\u6e05\u6670\u89c6\u91ce\uff0c\u8f83\u5c11\u547c\u5438\u5371\u5bb3<\/td>\n                            <\/tr>\n                        <\/tbody>\n                    <\/table>\n                <\/div>\n            <\/div>\n        <\/section>\n\n        <section class=\"contact-section\">\n            <h2>Contact Information \u8054\u7cfb\u65b9\u5f0f<\/h2>\n            <p>For technical inquiries, quotations, custom configurations, or detailed specifications on the TUNNELFLEX-R-PUR HF cable, please contact Anhui Feichun Special Cable Co., Ltd. through any of the following channels. Our engineering team can provide application-specific recommendations for mining and tunneling projects.<\/p>\n            <div class=\"contact-grid\">\n                <div class=\"contact-item\">\n                    <strong>WhatsApp \/ WeChat<\/strong>\n                    <a href=\"https:\/\/wa.me\/8613855123218\" target=\"_blank\" rel=\"noopener\">+86 138 5512 3218<\/a>\n                <\/div>\n                <div class=\"contact-item\">\n                    <strong>Technical Support \u6280\u672f\u652f\u6301<\/strong>\n                    <a href=\"mailto:tech@feichuncables.com\">tech@feichuncables.com<\/a>\n                <\/div>\n                <div class=\"contact-item\">\n                    <strong>Sales Department \u9500\u552e\u90e8\u95e8<\/strong>\n                    <a href=\"mailto:zihao.yang@feichuncables.com\">zihao.yang@feichuncables.com<\/a>\n                <\/div>\n                <div class=\"contact-item\">\n                    <strong>Engineering Department \u5de5\u7a0b\u90e8\u95e8<\/strong>\n                    <a href=\"mailto:ziyu.huang@feichuncables.com\">ziyu.huang@feichuncables.com<\/a>\n                <\/div>\n            <\/div>\n        <\/section>\n\n        <div class=\"references\">\n            <h3>References &#038; Standards \u53c2\u8003\u6587\u732e\u4e0e\u6807\u51c6<\/h3>\n            <ol>\n                <li>UTV Cavi. &#8220;TUNNELFLEX &#8211; Power cable supply to mobile equipment with high risk of mechanical damage especially in mining and tunneling.&#8221; Product Documentation. September 2023. <a href=\"https:\/\/www.utvcavi.com\/en\/prodotto\/tunnelflex\/\" rel=\"nofollow noopener\" target=\"_blank\">UTV Cavi TUNNELFLEX<\/a><\/li>\n                <li>UTV Cavi. &#8220;UTVFLEX\u00ae-PUR HF &#8211; Flexible cable designed for power and signalling mobile connections under severe mechanical stresses.&#8221; August 2023. <a href=\"https:\/\/www.utvcavi.com\/en\/prodotto\/utvflex-pur-hf-2\/\" rel=\"nofollow noopener\" target=\"_blank\">UTV UTVFLEX-PUR HF<\/a><\/li>\n                <li>SG Cables. &#8220;IEC 60754 &#8211; Standard for Halogen-Free Cable Testing: Low Smoke &#038; Toxicity Requirements.&#8221; Technical Article. May 2025. <a href=\"https:\/\/sgcables.com\/iec-60754-halogen-free\/\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60754 Halogen-Free Standards<\/a><\/li>\n                <li>Romtronic. &#8220;Comparing Halogen-Free vs Standard Wire Insulations: Safety, Performance, and Applications.&#8221; September 2025. <a href=\"https:\/\/www.romtronic.com\/comparing-halogen-free-vs-standard-wire-insulations\/\" rel=\"nofollow noopener\" target=\"_blank\">Halogen-Free Comparison<\/a><\/li>\n                <li>LAPP Group. &#8220;Halogen-free cables and wires &#8211; How, what, when and why?&#8221; Technical Documentation. <a href=\"https:\/\/e.lapp.com\/apac\/halogen-free-cables-and-wires-how-what-when-and-above-all-why\" rel=\"nofollow noopener\" target=\"_blank\">LAPP Halogen-Free Guide<\/a><\/li>\n                <li>Zable Cable. &#8220;Halogen Free Cable or Fire Resistant Cable: Which One Fits Your Application?&#8221; September 2025. <a href=\"https:\/\/zablecable.com\/halogen-free-cable\/\" rel=\"nofollow noopener\" target=\"_blank\">Halogen-Free Selection Guide<\/a><\/li>\n                <li>Honest Cable. &#8220;Halogen-Free Cables: Uses &#038; Benefits for Mining and Industrial Applications.&#8221; December 2025. <a href=\"https:\/\/honestcable.com\/halogen-free-cables\/\" rel=\"nofollow noopener\" target=\"_blank\">Halogen-Free Benefits<\/a><\/li>\n                <li>Veri Cables. &#8220;Underground Mining Tunnel Cable &#8211; Specialized cables for underground mining and tunneling.&#8221; December 2024. <a href=\"https:\/\/vericable.com\/underground-mining-tunnel-cable\/\" rel=\"nofollow noopener\" target=\"_blank\">Mining Tunnel Cables<\/a><\/li>\n                <li>Eland Cables. &#8220;Cheat Sheet: Low Smoke Zero Halogen Cables &#8211; Technical specifications and testing standards.&#8221; <a href=\"https:\/\/www.elandcables.com\/media\/lfvl0454\/cheat-sheet-lszh-cables.pdf\" rel=\"nofollow noopener\" target=\"_blank\">LSZH Cable Standards<\/a><\/li>\n                <li>International Electrotechnical Commission. &#8220;IEC 60754-1 &#038; 60754-2 &#8211; Test on gases evolved during combustion of materials from cables.&#8221; IEC Standards Database.<\/li>\n                <li>International Electrotechnical Commission. &#8220;IEC 60332-1-2 &#8211; Tests on electric cables under fire conditions &#8211; Part 1-2: Test for vertical flame propagation.&#8221; IEC Standards.<\/li>\n                <li>International Electrotechnical Commission. &#8220;IEC 60228 &#8211; Conductors of insulated cables.&#8221; IEC Standards Database.<\/li>\n            <\/ol>\n        <\/div>\n    <\/div>\n\n    <footer>\n        <p>&copy; 2026 Anhui Feichun Special Cable Co., Ltd. (\u5b89\u5fbd\u98de\u7eaf\u7279\u79cd\u7535\u7f06\u6709\u9650\u516c\u53f8)<\/p>\n        <p>All technical specifications are subject to change without notice. Please contact our engineering team for the most current information and project-specific recommendations.<\/p>\n        <p style=\"margin-top: 10px; font-size: 0.9em;\">Manufactured in accordance with international standards including IEC 60754, IEC 60332-1-2, IEC 60228, and DIN VDE specifications<\/p>\n    <\/footer>\n<\/body>\n<\/html>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/TROMMELFLEX-M-PUR-BRAIDED-D2X11Y-Technical-Specification.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"\u5d4c\u5165 TROMMELFLEX-M-PUR BRAIDED D2X11Y - Technical Specification\"><\/object><a id=\"wp-block-file--media-87a29cd0-6004-4dfa-ad93-cdca570217ea\" href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/TROMMELFLEX-M-PUR-BRAIDED-D2X11Y-Technical-Specification.pdf\">TROMMELFLEX-M-PUR BRAIDED D2X11Y &#8211; Technical Specification<\/a><a href=\"https:\/\/feichuncables.com\/blog\/wp-content\/uploads\/TROMMELFLEX-M-PUR-BRAIDED-D2X11Y-Technical-Specification.pdf\" class=\"wp-block-file__button wp-element-button\" aria-describedby=\"wp-block-file--media-87a29cd0-6004-4dfa-ad93-cdca570217ea\" download>\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"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.\nTUNNELFLEX-R-PUR 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