F-(N)TSCGEWÖU LWL TBM Reeling Mine Cable

(N)TSCGEWOU TBM Reeling Mine Cable International Standard

• constructionDIN VDE 0250-813
• General RequirementsDIN VDE 0250-1
• Guide UseDIN VDE 0298-3
• Electrical TestsDIN VDE 0472-501, 503, 508
• Non-Electrical TestsDIN VDE 0472-401. 402,602,303, 615
• Under Fire Condition TestsDIN VDE 0472-803, 804
• Flame RetardantVDE 0482-332-1-2,DIN EN 60332-1-2,IEC 60332-1
• Oil ResistantHD/EN/IEC 60811-2-1.,DIN VDE0473-811-2-1

F-(N)TSCGEWÖU LWL TBM Construction

• Conductor: Flexible red copper conductor Class5. acc. to IEC 60228, DIN VDE 0295
• Conductor screen: semi-conducting compound
• Insulation: rubber EPR compound Core screen: semi-conducting compound
• Earth conductor: Flexible red copper conductor Cl. 5, acc to IEC 60228, DIN VDE 0295
• Option: rubber compound; FO: with jelly filled PETP tubes in an envelope of heat resistant compound
• Earth core screen: semi-conducting compound
• Cores color: POWER: natural color with black semi-contuctive compound
• Earth: black semi-contuctive compound
• Stranding: three main core placed with earth-conductor divided in three in the outer interstices
• Inner sheath: EPR compound
• Outer sheath: RED PCP compound(Red)

Difference Between F-(N)TSCGEWÖU and (N)TSCGEWÖU

Although both cables are manufactured according to the same VDE mining cable standard and share similar electrical construction, they are designed for different operating conditions.

Precautions for using (N)TSCGEWöU Reeling Cable in TBM Equipment

(N) TSCGEWöU is a commonly used medium voltage drum-type reeling cable for TBMs/tunnel boring machines. The key is to strictly control bending/torsion/tension, ensure proper protection and winding management, standardize joint connections and inspections, and adapt to the underground environment. Otherwise, core breakage, sheath cracking, shielding failure, and short circuits are likely to occur.

I. Core Parameter Limits (Must be observed)

1. Rated Voltage: 3.6/6kV, 6/10kV, 8.7/15kV, 12/20kV
2. Long-term Temperature: 90℃; Minimum -25℃ for mobile installations, -40℃ for fixed installations.
3. Minimum Bending Radius: Fixed 6D, Mobile 10D (D = Cable Outer Diameter)
4. Maximum Torsion: ±25°/m, excessive torsion is strictly prohibited.
5. Maximum Tensile Force: ≤20–25kN (according to cross-section and manufacturer’s specifications)

II. Installation and Laying Precautions

1. Route and Bending

• o Avoid sharp angles and sharp bends throughout the installation; dynamic sections should have a radius ≥10D; use curved cable guides/pulleys at bends.
• o Allow 0.5–1m slack every 10m to prevent stretching; dragging, rolling, and pulling are strictly prohibited.

2. Fixing and Protection

• o Secure with dedicated clamps every 2–3m, adding wear-resistant rubber/nylon sliders at metal contact points.
• o Single-layer arrangement within the drum/drag chain, no cross-stacking; drum diameter ≥12D.
• o Wear prevention: Install protective grooves/guide frames inside the tunnel to avoid friction with tunnel segments and steel structures.

3. Joints and Terminals

• o High-voltage joints use cold-shrink/heat-shrink terminals, waterproof rating ≥IP68; shielding layer continuously grounded 360°.
• o Joints should be kept away from bending/stretching areas; joints must not pass over the drum.