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short circuit current rating

5 Min Read
Geographic & Operational Context: BHP Escondida (Escondida is Spanish for "hidden") is located in Chile's Atacama Desert, approximately 170 km south of the city of Antofagasta. It is the world's largest copper mine by production volume, producing ~4–5% of global copper supply annually. The operation spans over 4,000 km² and operates at elevations ranging 2,600–3,800 meters above sea level. Three draglines (each weighing ~3,600 tons, with boom length ~100 meters) are the primary excavation equipment. Each dragline requires a 22 kV main supply cable, with average cable runs of 1,500–3,000 meters from pit floor to surface substation. This is the most massive and remote dragline operation on Earth. BHP Escondida (Escondida在西班牙语中意为"隐藏")位于智利Atacama沙漠，距离Antofagasta市约170 km。它是全球最大的铜矿，年产量占全球铜供应的4-5%。该运营跨越4,000 km²以上，海拔范围2,600-3,800米。三个拉铲(每个约3,600吨，臂杆长度~100米)是主要挖掘设备。每个拉铲需要一条22 kV主供电电缆，平均电缆路由长度1,500-3,000米，从坑底到地表变电站。这是地球上最大、最偏远的拉铲运营。
Technical Department
on09/03/2026

BHP Escondida Type 280B 22/22kV 3x150mm² Dragline Cable: High-UV Atacama Desert Mining

Geographic & Operational Context: BHP Escondida (Escondida is Spanish for “hidden”) is located in Chile’s Atacama Desert, approximately 170 km south of the city of Antofagasta. It is the world’s largest copper mine by production volume, producing ~4–5% of global copper supply annually. The operation spans over 4,000 km² and operates at elevations ranging 2,600–3,800 meters above sea level. Three draglines (each weighing ~3,600 tons, with boom length ~100 meters) are the primary excavation equipment. Each dragline requires a 22 kV main supply cable, with average cable runs of 1,500–3,000 meters from pit floor to surface substation. This is the most massive and remote dragline operation on Earth. BHP Escondida (Escondida在西班牙语中意为”隐藏”)位于智利Atacama沙漠，距离Antofagasta市约170 km。它是全球最大的铜矿，年产量占全球铜供应的4-5%。该运营跨越4,000 km²以上，海拔范围2,600-3,800米。三个拉铲(每个约3,600吨，臂杆长度~100米)是主要挖掘设备。每个拉铲需要一条22 kV主供电电缆，平均电缆路由长度1,500-3,000米，从坑底到地表变电站。这是地球上最大、最偏远的拉铲运营。
23 Min Read
The shield transfer impedance (STI) for (N)TSCGECEWÖU 12/20kV cables with individual concentric copper screens is approximately 0.005–0.012 Ω/m at 50/60 Hz power frequency, representing the electrical impedance that coupling currents encounter as they attempt to penetrate the copper screen and reach the main conductor. At higher frequencies relevant to VFD variable switching (around 10 kHz), the STI increases slightly to approximately 0.008–0.015 Ω/m due to skin-effect limitations in the copper conductors. At even higher frequencies extending into the megahertz range (1–10 MHz) where harmonic emissions and EMI are most problematic, the STI rises further to approximately 0.02–0.08 Ω/m depending on the copper screen material properties and frequency-dependent conductor resistance. The shielding effectiveness, measured as the attenuation in decibels (dB) of external electromagnetic fields trying to couple energy into the cable conductors, is typically 60–80 dB at 100 kHz and remains above 40 dB even at 1 MHz, demonstrating excellent EMI rejection across the industrial frequency range. These metrics establish that individual concentric copper screens provide substantially superior EMC performance compared to traditional overall braided screens, particularly in reducing conducted emissions in VFD-driven machinery where rapid voltage switching and harmonic currents create severe electromagnetic stress on nearby control cables and sensitive electronic systems.
Technical Department
on27/02/2026

Shield Transfer Impedance: What are the exact EMC performance parameters and screening effectiveness metrics for (N)TSCGECEWÖU 12/20kV individually screened medium-voltage flexible cables in industrial and VFD applications? 

The shield transfer impedance (STI) for (N)TSCGECEWÖU 12/20kV cables with individual concentric copper screens is approximately 0.005–0.012 Ω/m at 50/60 Hz power frequency, representing the electrical impedance that coupling currents encounter as they attempt to penetrate the copper screen and reach the main conductor. At higher frequencies relevant to VFD variable switching (around 10 kHz), the STI increases slightly to approximately 0.008–0.015 Ω/m due to skin-effect limitations in the copper conductors. At even higher frequencies extending into the megahertz range (1–10 MHz) where harmonic emissions and EMI are most problematic, the STI rises further to approximately 0.02–0.08 Ω/m depending on the copper screen material properties and frequency-dependent conductor resistance. The shielding effectiveness, measured as the attenuation in decibels (dB) of external electromagnetic fields trying to couple energy into the cable conductors, is typically 60–80 dB at 100 kHz and remains above 40 dB even at 1 MHz, demonstrating excellent EMI rejection across the industrial frequency range. These metrics establish that individual concentric copper screens provide substantially superior EMC performance compared to traditional overall braided screens, particularly in reducing conducted emissions in VFD-driven machinery where rapid voltage switching and harmonic currents create severe electromagnetic stress on nearby control cables and sensitive electronic systems.
14 Min Read
(N)TSKCGEWÖU 3x150+3x25/3 3.6/6kV cable with split three-part earth conductor is approximately 65 mm (2.56 inches), with a standard tolerance window of ±3.0 mm producing a permissible range of 62.0–68.0 mm. The inner jacket (the intermediate protective layer between the insulation and outer sheath) typically has a nominal thickness of approximately 0.8–1.0 mm, contributing to overall diameter build-up but not typically measured as a separate "inner diameter" in engineering specifications because the inner jacket is not a defined outer boundary—it is a layer embedded within the cable structure. The outer jacket (the final thermosetting rubber compound layer) has a nominal thickness of approximately 2.5–3.0 mm, providing the cable's mechanical interface with the environment. The approximate total weight of this cable is 8,200 kg/km (5,510 lbs/1000 ft), with copper content approximately 4,560 kg/km. It features three 150 mm² Class 5 tinned copper main phase conductors, three strategically distributed 25/3 mm² split earth conductors for electromagnetic symmetry, a 3GI3 high-dielectric EPR insulation system rated for continuous 90°C operation, an anti-torsion braid reinforcement layer, and a 5GM5 thermosetting halogen-free outer sheath providing extreme abrasion and tear resistance.
Technical Department
on27/02/2026

What is the Inner and Outer Jacket Diameter of (N)TSKCGEWÖU 3×150+3×25/3 3.6/6kV Splittable Earth Cable?

(N)TSKCGEWÖU 3×150+3×25/3 3.6/6kV cable with split three-part earth conductor is approximately 65 mm (2.56 inches), with a standard tolerance window of ±3.0 mm producing a permissible range of 62.0–68.0 mm. The inner jacket (the intermediate protective layer between the insulation and outer sheath) typically has a nominal thickness of approximately 0.8–1.0 mm, contributing to overall diameter build-up but not typically measured as a separate “inner diameter” in engineering specifications because the inner jacket is not a defined outer boundary—it is a layer embedded within the cable structure. The outer jacket (the final thermosetting rubber compound layer) has a nominal thickness of approximately 2.5–3.0 mm, providing the cable’s mechanical interface with the environment. The approximate total weight of this cable is 8,200 kg/km (5,510 lbs/1000 ft), with copper content approximately 4,560 kg/km. It features three 150 mm² Class 5 tinned copper main phase conductors, three strategically distributed 25/3 mm² split earth conductors for electromagnetic symmetry, a 3GI3 high-dielectric EPR insulation system rated for continuous 90°C operation, an anti-torsion braid reinforcement layer, and a 5GM5 thermosetting halogen-free outer sheath providing extreme abrasion and tear resistance.
9 Min Read
N3GHSSYCY cable designation represents a sophisticated medium voltage mining cable specifically engineered for hazardous underground environments. This nomenclature follows the German VDE (Verband der Elektrotechnik) standardization system, where each letter and number conveys critical information about the cable's construction and intended application. Understanding this designation system is essential for engineers, procurement specialists, and safety officers working in mining and tunneling operations. N3GHSSYCY电缆名称代表专门为危险地下环境设计的复杂中压矿用电缆。该命名法遵循德国VDE（电气工程协会）标准化系统，其中每个字母和数字都传达有关电缆结构和预期应用的关键信息。了解该命名系统对于从事采矿和隧道作业的工程师、采购专家和安全官员至关重要。
Technical Department
on27/01/2026

N3GHSSYCY Cable Datasheet: Technical Specification Downloads & Resources

N3GHSSYCY cable designation represents a sophisticated medium voltage mining cable specifically engineered for hazardous underground environments. This nomenclature follows the German VDE (Verband der Elektrotechnik) standardization system, where each letter and number conveys critical information about the cable’s construction and intended application. Understanding this designation system is essential for engineers, procurement specialists, and safety officers working in mining and tunneling operations. N3GHSSYCY电缆名称代表专门为危险地下环境设计的复杂中压矿用电缆。该命名法遵循德国VDE（电气工程协会）标准化系统，其中每个字母和数字都传达有关电缆结构和预期应用的关键信息。了解该命名系统对于从事采矿和隧道作业的工程师、采购专家和安全官员至关重要。
7 Min Read
PROTOLON(M) F(N)TSCGEWOEU Cable
Technical Department
on20/11/2025

What is PROTOLON(M) F(N)TSCGEWOEU Cable?

PROTOLON(M) F(N)TSCGEWOEU represents a premium series of medium voltage trailing cables specifically engineered for demanding industrial applications. These cables feature advanced EPR (Ethylene Propylene Rubber) insulation technology, delivering exceptional performance in voltage ranges from 3.6/6 kV to 20/35 kV. The PROTOLON compound provides superior electrical insulation properties and mechanical resilience compared to standard EPR formulations.