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Cu-weight per km

10 Min Read
Dragline Scale and Power Demand: Modern electric draglines (such as Bucyrus-Erie, Komatsu, or Hitachi models) are among the largest mobile equipment ever built—some models weighing 13,000+ tonnes with buckets exceeding 200+ cubic meters. A typical dragline requires continuous 6 or 10 kV three-phase power supply delivering 1–3 megawatts. This power is distributed from mobile substations positioned near the dragline, connected via flexible trailing cables spanning 500–1,500 meters. 现代电动拉铲(如Bucyrus-Erie、小松或日立型号)是世界上最大的移动设备之一——某些型号重达13000多吨，斗容超过200立方米。典型拉铲需要持续的6或10 kV三相电源供应，功率为1-3兆瓦。此电源由位于拉铲附近的移动变电站分配，通过跨越500-1500米的柔性拖曳电缆连接。 Arctic Mining Geography: Draglines operate in extreme environments: Siberian Russia (winter temperatures -40°C to -60°C), Canadian Arctic (similar extremes), Mongolia (up to -50°C), and high-altitude operations in Peru or Tibet where thin air and cold combine to degrade cable performance. Standard European or North American cable designs are inadequate for these conditions.
Technical Department
on09/03/2026

Dragline Power Specs: Ampacity and Weight for КГЭ-ХЛ 3×150+1×50+1×10 6/10kV Heavy-Duty Trailing Cable

Dragline Scale and Power Demand: Modern electric draglines (such as Bucyrus-Erie, Komatsu, or Hitachi models) are among the largest mobile equipment ever built—some models weighing 13,000+ tonnes with buckets exceeding 200+ cubic meters. A typical dragline requires continuous 6 or 10 kV three-phase power supply delivering 1–3 megawatts. This power is distributed from mobile substations positioned near the dragline, connected via flexible trailing cables spanning 500–1,500 meters. 现代电动拉铲(如Bucyrus-Erie、小松或日立型号)是世界上最大的移动设备之一——某些型号重达13000多吨，斗容超过200立方米。典型拉铲需要持续的6或10 kV三相电源供应，功率为1-3兆瓦。此电源由位于拉铲附近的移动变电站分配，通过跨越500-1500米的柔性拖曳电缆连接。 Arctic Mining Geography: Draglines operate in extreme environments: Siberian Russia (winter temperatures -40°C to -60°C), Canadian Arctic (similar extremes), Mongolia (up to -50°C), and high-altitude operations in Peru or Tibet where thin air and cold combine to degrade cable performance. Standard European or North American cable designs are inadequate for these conditions.
11 Min Read
Joy Shuttle Car Operating Cycle: Joy Global's shuttle cars are core materials transport vehicles in underground coal mines. A typical operational cycle involves: (1) Advancing into mine face (unreeling cable under constant speed tension), (2) Loading ore/waste into bucket, (3) Sharp turns and direction changes (rapid torsional and bending stress), (4) Reversing to dump point (rapid cable reeling, highest tension conditions), (5) Return to face under load (sustained tension, speeds 50–100 m/min). A single shift can involve 80–120 complete cycles. Joy Global穿梭车是地下煤矿的核心运输工具。典型运行周期包括：(1)推进到矿面(在恒定速度张力下放线)，(2)装载矿石/废料，(3)急转弯和方向改变(快速扭转和弯曲应力)，(4)倒车至卸点(快速收线，最高张力条件)，(5)负载返回(持续张力，速度50-100 m/min)。单班可完成80-120个完整周期。 Cable Stress Combination: Unlike stationary installations where cables experience steady-state thermal and electrical stress, shuttle car cables experience: (1) Cyclic tensile loading (alternating between low idle tension and high reeling tension), (2) Torsional twisting during turns (multiple revolutions per shift), (3) Sharp bending around reel drum edges (radius-limited deflection), (4) Thermal cycling (ambient underground temperature 15–25°C during operation, cold surface storage -5°C to -20°C).
Technical Department
on09/03/2026

Joy Shuttle Car Tension Ratings: Maximum Safe Pulling Load for Type 275 3.3/3.3kV 3x50mm² Cables

Joy Shuttle Car Operating Cycle: Joy Global’s shuttle cars are core materials transport vehicles in underground coal mines. A typical operational cycle involves: (1) Advancing into mine face (unreeling cable under constant speed tension), (2) Loading ore/waste into bucket, (3) Sharp turns and direction changes (rapid torsional and bending stress), (4) Reversing to dump point (rapid cable reeling, highest tension conditions), (5) Return to face under load (sustained tension, speeds 50–100 m/min). A single shift can involve 80–120 complete cycles. Joy Global穿梭车是地下煤矿的核心运输工具。典型运行周期包括：(1)推进到矿面(在恒定速度张力下放线)，(2)装载矿石/废料，(3)急转弯和方向改变(快速扭转和弯曲应力)，(4)倒车至卸点(快速收线，最高张力条件)，(5)负载返回(持续张力，速度50-100 m/min)。单班可完成80-120个完整周期。 Cable Stress Combination: Unlike stationary installations where cables experience steady-state thermal and electrical stress, shuttle car cables experience: (1) Cyclic tensile loading (alternating between low idle tension and high reeling tension), (2) Torsional twisting during turns (multiple revolutions per shift), (3) Sharp bending around reel drum edges (radius-limited deflection), (4) Thermal cycling (ambient underground temperature 15–25°C during operation, cold surface storage -5°C to -20°C).