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Untel mining cable

8 Min Read
Before specifying Type 7S cable for installation in tight mine shafts, engineers must understand the fundamental distinction between two completely different bending radius requirements: static (fixed position after installation) and dynamic (during pulling/deployment). 在为狭窄矿井安装指定Type 7S电缆之前，工程师必须理解两个完全不同的弯曲半径要求之间的根本区别：静态(安装后固定位置)和动态(拉动/部署过程中)。 Static Bend Radius: The minimum radius to which cable can be bent and held in a fixed, immobile position without risk of insulation cracking or internal conductor damage. Once the cable is in its final position and no pulling force is applied, this is the operative limit.
Technical Department
on06/03/2026

Bending Radius: Minimum Static Bend Limits for Installing Type 7S 6.6kV 3x120mm² in Tight Mine Shafts

Before specifying Type 7S cable for installation in tight mine shafts, engineers must understand the fundamental distinction between two completely different bending radius requirements: static (fixed position after installation) and dynamic (during pulling/deployment). 在为狭窄矿井安装指定Type 7S电缆之前，工程师必须理解两个完全不同的弯曲半径要求之间的根本区别：静态(安装后固定位置)和动态(拉动/部署过程中)。 Static Bend Radius: The minimum radius to which cable can be bent and held in a fixed, immobile position without risk of insulation cracking or internal conductor damage. Once the cable is in its final position and no pulling force is applied, this is the operative limit.
9 Min Read
Type 7S cables are specifically engineered for mining applications where equipment must operate in wet, chemically hostile, and mechanically demanding underground environments. The designation "7S" indicates a cable designed for high mechanical stress combined with submersion protection—the perfect specification for permanent dewatering pump installations in deep mine shafts. Type 7S电缆专门为必须在潮湿、化学腐蚀性和机械要求苛刻的地下环境中运行的采矿应用而设计。术语"7S"表示一种为高机械应力结合浸没保护而设计的电缆——是深矿井永久降水泵安装的完美规范。
Technical Department
on06/03/2026

Dewatering Pumps: Is Type 7S 1.1kV 3x50mm² Suitable for Permanent Submerged Connections?

Type 7S cables are specifically engineered for mining applications where equipment must operate in wet, chemically hostile, and mechanically demanding underground environments. The designation “7S” indicates a cable designed for high mechanical stress combined with submersion protection—the perfect specification for permanent dewatering pump installations in deep mine shafts. Type 7S电缆专门为必须在潮湿、化学腐蚀性和机械要求苛刻的地下环境中运行的采矿应用而设计。术语”7S”表示一种为高机械应力结合浸没保护而设计的电缆——是深矿井永久降水泵安装的完美规范。