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Product

DIN VDE 0250-812 / 813 mining trailing cablesDIN VDE 0250-8133.6/6 kV · 6/10 kVRL Steel-Strand Armour

NTSKCGERLÖU Armoured MV Coal-Cutter CableDIN VDE 0250-813 3.6/6 kV & 6/10 kV steel-strand armoured (RL) MV coal-cutter trailing

NTSKCGERLÖU is a heavy-duty steel-strand armoured (RL = Runddraht-Litzenbewehrung) medium-voltage (3.6/6 kV and 6/10 kV) coal-cutter trailing cable built to DIN VDE 0250-813 with triple-extruded 3GI3 EPR insulation, CGE screening, K pilot/control cores

EMC screen
Oil-resistant
Flame-retardant
Anti-torsion braid
Order designation
NTSKCGERLÖU 3×95+4×4K+50E 3.6/6 kV
Outer Ø ≈
67.0 mm
Copper weight
3,530 kg/km
Total weight ≈
7,410 kg/km
Min. bend R (fixed)
402 mm
All sizes (10)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
3.6/6–6/10 kV
Umax 7.2 kV / 12 kV AC
Armouring
RL Steel Strand
Flexible galvanized steel strands
Screen & pilot
CGE + K Pack
Semicon + Cu screen + pilot bundle
Insulation
3GI3 EPR
+90 °C MV EPR dielectric
Outer sheath
5GM5 PCP
Extra-heavy crush-resistant PCP
Min. bend radius
8×D / 12×D
Fixed 8×D · coal-face flexing 12×D

Typical values for this cable type, based on DIN VDE 0250-813 — confirmed in the datasheet and quotation for your order.

Application fit

Is NTSKCGERLÖU right for your machine?

Built for high-tonnage medium-voltage longwall shearers, plough drives, and armored face conveyors (AFC) subject to heavy roof coal falls and extreme drawbar pull.

Mine roadway & tunnel wall hangers

Suitable

Flexible RL galvanized steel wire strands absorb direct impact from roof rock and coal lumps.

Longwall shearer & Bretby handler

Suitable

Stranded RL armour wires maintain flexibility through heavy longwall Bretby cable troughs.

Trailing & towing

Suitable

High axial tensile strength withstands longwall shearer haulage forces along 300–400 m faces.

Fixed installation

Suitable

Suitable for inclined gate roads and armoured face conveyor feeder runs.

Motorised monospiral reel

With conditions

RL armour adds weight; for fast horizontal drum reeling use NTSCGEWÖU.

NTSCGEWÖU 3.6/6–18/30 kV
Typical machinesDeep longwall coal miningArmoured face conveyor (AFC) drivesHeavy potash & rock-salt shearersInclined mine gallery feeders

Construction

Layer by layer

Three Class 5 tinned copper MV cores (3GI3 EPR + CGE screen), K control/pilot bundle, GM1b inner sheath, flexible galvanized steel wire

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Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Phase & K control conductorsTinned finely stranded copper, Class 5 per DIN EN 60228DIN EN 60228 Class 5
2Inner & outer semicon (GE)Extruded semi-conductive elastomeric field-grading layersDIN VDE 0250-813
3MV EPR insulation (3GI3)Cross-linked ethylene propylene rubber compound 3GI3DIN VDE 0207-20
4Core copper/semicon screen (C)Tinned copper wire/tape screen over each phase coreDIN VDE 0250-813
5Inner sheathHeavy-duty halogen-free/chloroprene inner bedding compound GM1b/5GM3DIN VDE 0250-813
6Steel strand armour (RL)Helical layer of flexible galvanized steel wire strands (Runddraht-Litzen)DIN VDE 0250-813
7Outer sheath (5GM5)Extra-heavy flame-retardant, tear- and oil-resistant polychloroprene 5GM5DIN VDE 0207-21

NTSKCGERLÖU 3.6/6 kV

3.6/6 kV (Umax 7.2 kV) RL steel-strand armoured longwall coal-shearer cable.

NTSKCGERLÖU 6/10 kV

6/10 kV (Umax 12 kV) RL steel-strand armoured high-capacity shearer feeder.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0250-813. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
3.6/6 kV (Umax 7.2 kV) · 6/10 kV (Umax 12 kV)
AC routine test voltage
11 kV rms (3.6/6 kV) · 17 kV rms (6/10 kV)
Partial discharge level
≤ 20 pC at 2 U0
Pilot / control bundle voltage
0.6/1 kV (2.5 kV AC test)

Thermal

Max. conductor operating temp.
+90 °C
Max. short-circuit temperature
+250 °C (5 s)
Ambient temperature (flexing)
-25 °C to +60 °C
Ambient temperature (fixed)
-40 °C to +80 °C

Mechanical

Armour construction
Flexible multi-wire galvanized steel
Crush & impact resistance
> 30 kJ impact rating for longwall face
Min. bending radius (fixed
8 × D fixed · 12 × D flexing

Resistance

Oil & hydraulic emulsion
DIN EN 60811-404 resistant
Flame propagation
DIN EN 60332-1-2 self-extinguishing
Corrosion protection
Heavy zinc-coated steel strands embedded in

Reference standards

Primary specification
DIN VDE 0250-813
Conductor standard
DIN EN 60228 Class 5 tinned copper
Compound standard
DIN VDE 0207-20 (3GI3) & 0207-21 (5GM5)

Identification

Core coding
Numbered phase cores 1–3 + numbered K pilot
Outer sheath colour
Red or Yellow with embossed designation

Sizes

10 standard configurations (NTSKCGERLÖU)

Nominal dimensions, copper weights and electrical parameters for NTSKCGERLÖU per DIN VDE 0250-813.

Dimensions & weights
Order designationConfigurationPhase size mm²Outer Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard NTSKCGERLÖU configurations
NTSKCGERLÖU 3×35+4×4K+25E 3.6/6 kV3×35 + 4×4K + 25E (3.6/6 kV)3552.51,4904,180315
NTSKCGERLÖU 3×50+4×4K+25E 3.6/6 kV3×50 + 4×4K + 25E (3.6/6 kV)5056.81,9304,950341
NTSKCGERLÖU 3×70+4×4K+35E 3.6/6 kV3×70 + 4×4K + 35E (3.6/6 kV)7061.52,6106,020369
NTSKCGERLÖU 3×95+4×4K+50E 3.6/6 kV3×95 + 4×4K + 50E (3.6/6 kV)9567.03,5307,410402
NTSKCGERLÖU 3×120+4×4K+70E 3.6/6 kV3×120 + 4×4K + 70E (3.6/6 kV)12071.84,4708,820431
NTSKCGERLÖU 3×150+4×4K+70E 3.6/6 kV3×150 + 4×4K + 70E (3.6/6 kV)15076.55,34010,150459
NTSKCGERLÖU 3×50+4×4K+25E 6/10 kV3×50 + 4×4K + 25E (6/10 kV)5060.21,9605,420361
NTSKCGERLÖU 3×70+4×4K+35E 6/10 kV3×70 + 4×4K + 35E (6/10 kV)7065.02,6506,540390
NTSKCGERLÖU 3×95+4×4K+50E 6/10 kV3×95 + 4×4K + 50E (6/10 kV)9570.43,5707,980422
NTSKCGERLÖU 3×120+4×4K+70E 6/10 kV3×120 + 4×4K + 70E (6/10 kV)12075.24,5109,450451
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per DIN VDE 0250-813.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
MV AC voltage withstand11 kV (3.6/6 kV) or 17 kV (6/10 kV) for 5 min100 % of drums
Partial discharge test≤ 20 pC at 2 U0 per DIN VDE 0250-813100 % of drums
Sample tests
RL armour crush & impact testNo core-to-screen short under dynamic impact loadPer production batch
Flame & oil resistanceDIN EN 60332-1-2 & EN 60811-404Type approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

DIN VDE 0250-813DIN EN 60332-1-2EN 10204 3.1

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX NTSKCGERLÖU 3.6/6 kV VDE 0250-813
Delivery form
Fumigated export wooden drums
Standard drum lengths
300 m · 500 m · 1000 m (or custom cut
MOQ
100 m (stock sizes) · 300 m (custom build)
Lead time
3–5 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFNTSKCGERLÖU Armoured MV Coal-Cutter Cable – technical datasheet10 sizes · construction, technical data, approvalsXLSXNTSKCGERLÖU spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why does NTSKCGERLÖU use stranded steel wire armour (RL) instead of solid steel wires?
Solid armour wires quickly work-harden and snap when a coal-shearer trailing cable flexes repeatedly along the longwall face. The RL (Runddraht-Litzenbewehrung) construction uses flexible 7-wire galvanized steel strands laid helically between the inner and outer sheaths, combining high crush resistance with multi-million-cycle bending life.
What is the voltage difference between NTSKCGERLÖU and NSSHKCGERLÖU?
NTSKCGERLÖU is built to DIN VDE 0250-813 for medium-voltage coal-cutter systems rated 3.6/6 kV and 6/10 kV with triple-extruded dielectric stress control, whereas NSSHKCGERLÖU is built to DIN VDE 0250-812 for low- and intermediate-voltage shearers rated 0.6/1 kV and 1.8/3 kV. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and sheath dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.
How are pilot and control signals routed inside NTSKCGERLÖU?
The 'K' sub-assembly integrates four or more 2.5 mm² or 4 mm² Class 5 tinned copper control and pilot-monitoring cores into the cable interstitial or centre cradle, allowing intrinsic-safety pilot relays and shearer haulage controls to operate through the main power cable. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and sheath dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.
Can NTSKCGERLÖU be installed in steep or inclined longwall seams?
Yes. The helical RL galvanized steel wire strand armour provides high axial tensile load capacity and self-supporting strength, making NTSKCGERLÖU ideal for steep-seam coal shearers and inclined gallery feeders where unarmoured trailing cables would stretch. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and sheath dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.

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NTSKCGERLÖU Armoured MV Coal-Cutter Cable

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Reel & motion:
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- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
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