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Product

CHCU / CHVU open-cast MV & EHV trailing cables3.6/6 kV (Umax 7.2 kV)DIN VDE 0250-813 / NF M 82-376Open-Cast Shovel & Drill

6-CHCU Opencast Mining Mobile-Equipment Cable3.6/6 kV (Umax 7.2 kV) screened open-cast mining mobile-equipment trailing cable

6-CHCU is a 3.6/6 kV (Umax 7.2 kV) medium-voltage open-cast mining mobile-equipment trailing cable built to DIN VDE 0250-813 and NF M 82-376, featuring triple-extruded EPR insulation with semi-conductive layers (H), individual and/or collective copper

EMC screen
Oil-resistant
Flame-retardant
Ozone, UV & moisture
Order designation
6-CHCU 3×70+3×35/3E 3.6/6 kV
Outer Ø ≈
53.8 mm
Copper weight
2,520 kg/km
Total weight ≈
4,360 kg/km
Min. bend R (fixed)
323 mm
All sizes (8)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
3.6/6 kV
Umax 7.2 kV AC (10-CHCU/15-CHCU opt.)
Screen system
C - H - C
Phase Cu screen + semicon + earth
Conductor
Class 5 Tinned
IEC 60228 finely stranded copper
Insulation
3GI3 MV EPR
+90 °C ozone-resistant EPR
Outer sheath
5GM5 PCP (U)
Weather, oil & tear-proof rubber
Min. bend radius
6×D / 10×D
Fixed 6×D · trailing 10×D

Typical values for this cable type, based on DIN VDE 0250-813 / NF M 82-376 — confirmed in the datasheet and quotation for your order.

Application fit

Is 6-CHCU right for your machine?

Engineered for 6 kV open-cast quarry and surface-mine electric rope shovels, rotary blast-hole drills, mobile hoppers, and bench feeder skids.

Trailing & towing

Suitable

5GM5 outer sheath and double elastomeric bedding endure dragging across open-pit haul benches.

Drilling jumbo & rotary mast feed

Suitable

Standard 6 kV power feeder for rotary blast-hole drills and crawler-mounted hydraulic shovels.

Motorised monospiral reel

Suitable

Anti-torsion reinforcement supports slow-to-medium speed cable reel cars on pit benches.

Immersion & wet locations

Suitable

Submersible in open-pit rainwater puddles and dewatering sumps (AD7/AD8).

Vertical / spreader reel

With conditions

Use NTSCGEWÖU for high-speed vertical hoist reeling.

NTSCGEWÖU 3.6/6 kV
Typical machinesOpen-cast coal, copper & iron minesElectric rope & hydraulic shovelsRotary blast-hole drilling rigsQuarry crushers & mobile hoppers

Construction

Layer by layer

Three Class 5 tinned copper phase conductors, inner/outer semi-conductive layers (H) with 3GI3 EPR insulation, tinned copper phase screens

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Phase conductorsFinely stranded tinned copper, Class 5 per DIN EN 60228DIN EN 60228 Class 5
2Inner & outer semicon (H)Vulcanised semi-conductive elastomeric stress-grading layersDIN VDE 0250-813
3MV EPR insulation (3GI3)Cross-linked ethylene propylene rubber compound 3GI3DIN VDE 0207-20
4Phase & earth copper screen (C)Composite tinned copper wire/textile braid screen + split interstitial earth coresDIN VDE 0250-813
5Inner sheathHeavy-duty elastomer inner sheath compound GM1b / 5GM3DIN VDE 0250-813
6Outer sheath (U)Extra-heavy flame-retardant, oil-, UV- and tear-resistant polychloroprene 5GM5DIN VDE 0207-21

6-CHCU (3.6/6 kV)

Standard 3.6/6 kV open-cast mobile equipment trailing cable.

10-CHCU / 15-CHCU / 20-CHCU

6/10 kV, 8.7/15 kV, and 12/20 kV versions for higher-voltage open-pit distribution.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0250-813 / NF M 82-376. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
3.6/6 kV (Umax 7.2 kV)
AC routine test voltage
11 kV rms / 5 min
Partial discharge level
≤ 20 pC at 2 U0
Insulation resistance @ 20 °C
≥ 500 MΩ·km

Thermal

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

Mechanical

Max. tensile load on copper
15 N/mm² (20 N/mm² with anti-torsion braid)
Min. bending radius (fixed
6 × D fixed · 10 × D trailing
Abrasion & tear resistance
5GM5 extra-heavy-duty open-cast compound

Resistance

Weather, UV & ozone
DIN EN 60811-403 outdoor pit bench rated
Oil & hydraulic fluid
DIN EN 60811-404 resistant
Flame retardancy
DIN EN 60332-1-2 self-extinguishing

Reference standards

Primary specification
DIN VDE 0250-813 / NF M 82-376
Conductor standard
DIN EN 60228 Class 5 tinned copper
Sheath standard
DIN VDE 0207-21 (5GM5)

Identification

Core coding
Numbered phase cores 1, 2, 3 + split
Outer sheath colour
Yellow or Red high-visibility pit jacket

Sizes

8 standard configurations (6-CHCU)

Nominal dimensions, copper weights and electrical parameters for 6-CHCU per DIN VDE 0250-813 / NF M 82-376.

Dimensions & weights
Order designationConfigurationPhase size mm²Outer Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard 6-CHCU configurations
6-CHCU 3×25+3×16/3E 3.6/6 kV3×25 + 3×16/3E (3.6/6 kV)2541.51,0202,290249
6-CHCU 3×35+3×16/3E 3.6/6 kV3×35 + 3×16/3E (3.6/6 kV)3544.81,3102,740269
6-CHCU 3×50+3×25/3E 3.6/6 kV3×50 + 3×25/3E (3.6/6 kV)5049.01,8403,450294
6-CHCU 3×70+3×35/3E 3.6/6 kV3×70 + 3×35/3E (3.6/6 kV)7053.82,5204,360323
6-CHCU 3×95+3×50/3E 3.6/6 kV3×95 + 3×50/3E (3.6/6 kV)9559.23,4405,540355
6-CHCU 3×120+3×70/3E 3.6/6 kV3×120 + 3×70/3E (3.6/6 kV)12063.84,3806,720383
6-CHCU 3×150+3×70/3E 3.6/6 kV3×150 + 3×70/3E (3.6/6 kV)15068.55,2507,890411
6-CHCU 3×185+3×95/3E 3.6/6 kV3×185 + 3×95/3E (3.6/6 kV)18573.66,5209,350442
  • 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 / NF M 82-376.

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
11 kV AC voltage withstand11 kV rms / 5 min per DIN VDE 0250-813100 % of drums
Partial discharge test≤ 20 pC at 2 U0 (7.2 kV)100 % of drums
Sample tests
5GM5 tear & abrasion testDIN VDE 0207-21 mechanical verificationPer production batch
Ozone, UV & oil resistanceDIN EN 60811-403 & 60811-404Type approval

Inspection certificate

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

Product approvals

DIN VDE 0250-813NF M 82-376EN 10204 3.1

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX 6-CHCU 3.6/6 kV OPENCAST MINING
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

PDF6-CHCU Opencast Mining Mobile-Equipment Cable – technical datasheet8 sizes · construction, technical data, approvalsXLSX6-CHCU spec data (Excel)All 8 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.

What is the meaning of the 6-CHCU nomenclature?
'6' designates the 6 kV rated three-phase voltage class (3.6/6 kV, Umax 7.2 kV), the first 'C' indicates individual metallic phase screening, 'H' denotes semi-conductive elastomeric stress-control layers, the second 'C' represents the protective earth/screen path, and 'U' denotes the heavy-duty flame-retardant polychloroprene outer jacket.
How does 6-CHCU differ from 6-CHCU KON?
Standard 6-CHCU uses individual phase screens and split interstitial earth conductors for maximum flexibility when trailing behind open-pit shovels and drills. 6-CHCU KON adds an overall concentric earth and monitoring conductor (KON) around the laid-up core assembly for radial crush/penetration fault detection. 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.
Are higher-voltage 10-CHCU, 15-CHCU, and 20-CHCU versions available?
Yes. Alongside 6-CHCU (3.6/6 kV), we manufacture 10-CHCU (6/10 kV), 15-CHCU (8.7/15 kV), and 20-CHCU (12/20 kV) using the same heavy-duty open-cast elastomer architecture with scaled 3GI3 EPR wall thicknesses. 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 6-CHCU operate continuously in wet open-pit benches and tropical sun?
Yes. The 3GI3 EPR insulation and 5GM5 polychloroprene outer sheath are formulated for continuous outdoor UV exposure, ozone resistance, and water immersion in flooded quarry floors from -25 °C to +60 °C dynamic ambient. 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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6-CHCU Opencast Mining Mobile-Equipment Cable

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Reel & motion:
- Reel type: 
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