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Product

British Coal MGM 109 / MGM 118 & PN-G-90006 Underground Mining Power CablesMGM 118 Type 6110 · BS 67083.8/6.6 kV · Individually Cu-ScreenedSingle Wire Armour (SWA ≥ 75 %)

MGM 118 Type 6110 CableBritish Coal MGM 118 / BS 6708 3.8/6.6 kV 3-core individually copper-screened SWA mining

MGM 118 Type 6110 Cable is a 3.8/6.6 kV 3-core individually copper-screened single-wire-armoured (SWA) medium-voltage mining feeder cable manufactured to British Coal Specification MGM 118 and BS 6708, combining Class 2 tinned copper conductors (25 mm² to

Flame-retardant
EMC screen
Oil-resistant
Water-resistant
Order designation
MGM 118 Type 6110 3C × 50 mm² Cu-Scr SWA
Outer Ø ≈
45.8 mm
Copper weight
1,690 kg/km
Total weight ≈
4,080 kg/km
Min. bend R (fixed)
458 mm
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Specification
MGM 118 Type
6.6 kV · Screened (1) · SWA (1) · 3C
Rated voltage
3.8/6.6 kV AC
11 kV AC / 5 min dielectric test
Phase screens
Semi-Con + Cu
Radial-field screened per core
Armouring
Single Wire
Galvanized steel + Cu wires (≥ 75 %)
HV insulation
Type GP5 HV-EPR
90 °C PD-free rubber BS 7655-1.2
Partial discharge
≤ 5 pC @ 1.73 U0
100 % routine PD verified

Typical values for this cable type, based on British Coal MGM 118 / BS 6708 (Type 6110 3.8/6.6 kV Screened SWA) — confirmed in the datasheet and quotation for your order.

Application fit

Is MGM 118 Type 6110 right for your machine?

Engineered for 6.6 kV main underground intake roadways, longwall district transformer feeders, and pit-bottom HV distribution boards requiring radial-field copper phase screening and ≥ 75 %

Fixed installation

Suitable

Single Wire Armour with 10×D bending radius enables clean horizontal roadway installation and coupler entry.

Switchgear & control cabinet wiring

Suitable

Individual copper tape screens ensure radial electric field control and instantaneous earth-leakage tripping.

Immersion & wet locations

Suitable

Extruded PVC inner bedding and heavy mining PVC outer sheath resist mine water and oil.

Typical machines6.6 kV longwall district transformer supplyUnderground coal & mineral trunk roadwaysPit-bottom 6.6 kV flameproof HV switchboardsSurface-to-underground drift HV feeders

Construction

Layer by layer

Three circular compacted tinned copper conductors (BS EN 60228 Class 2, 25 to 185 mm²), extruded semi-conductive conductor screen, 90 °C

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded tinned copper conductorBS EN 60228 Class 2 circular compacted tinned annealed copper (25 to 185 mm²)MGM 118 / BS EN 60228
2Triple-extruded Semi-Con + GP5 HV-EPRBonded semi-con conductor screen + 90 °C Type GP5 HV-EPR (BS 7655-1.2) + strippableMGM 118 / BS 7655-1.2
3Individual tinned copper tape phaseHelically lapped tinned annealed copper tape over each coreMGM 118 Type 6110
4Extruded PVC inner beddingFlame-retardant extruded PVC inner beddingMGM 118
5Single Wire Armour (SWA ≥ 75 %Single helical layer of galvanized steel wires + tinned copper wires (combinedMGM 118 / BS 6708
6Mining flame-retardant PVC outer sheathHeavy-duty abrasion- and flame-retardant PVC outer sheath, Black or HV RedMGM 118 / BS 7655

MGM 118 Type 6110 District Feeders (3C × 25, 35, 50, 70 mm²)

3.8/6.6 kV individually copper-screened SWA feeders for 6.6 kV/1.1 kV flameproof district transformers.

MGM 118 Type 6110 Main Trunk Feeders (3C × 95, 120, 150, 185 mm²)

High-ampacity 6.6 kV radial-field screened SWA trunk cables for main underground intake roadways.

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on British Coal MGM 118 / BS 6708 (Type 6110 3.8/6.6 kV Screened SWA). Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
3.8/6.6 kV AC (3800/6600 V)
AC dielectric test voltage
11,000 V AC for 5 minutes
Partial discharge (PD) limit
≤ 5 pC at 1.73 × U0 (6.6 kV)
Max. conductor operating temp.
+90 °C continuous · +250 °C short-circuit
Combined screen + armour conductance
≥ 75 % of the conductance of one phase

Thermal

Operating temperature range
-15 °C to +90 °C (fixed installation)
Minimum installation temp.
0 °C

Mechanical

Min. bending radius
10 × overall diameter (D) for screened 6.6
Armour construction
Single layer of galvanized steel + tinned

Resistance

Flame retardance
BS EN 60332-1-2 & British Coal MGM 118
Fault safety
Individual Cu core screens confine

Reference standards

Primary specification
British Coal Specification MGM 118 (Type
Material standards
BS EN 60228 · BS 7655-1.2 (GP5 EPR) · BS EN

Identification

Core identification
3-Core: Brown, Black, Grey (or numbered 1
Outer sheath colour
Black (or Red HV) embossed 'MGM 118 TYPE

Sizes

6 standard configurations (MGM 118 Type 6110)

Nominal dimensions, copper weights, DC resistance and current ratings for MGM 118 Type 6110 per British Coal MGM 118 / BS 6708 (Type 6110 3.8/6.6 kV Screened

Dimensions & weights
Order designationCores × SizeMain cross-sectionOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard MGM 118 Type 6110 configurations
MGM 118 Type 6110 3C × 35 mm² Cu-Scr SWA3 × 35 mm²35.0 mm²42.41,2403,420424
MGM 118 Type 6110 3C × 50 mm² Cu-Scr SWA3 × 50 mm²50.0 mm²45.81,6904,080458
MGM 118 Type 6110 3C × 70 mm² Cu-Scr SWA3 × 70 mm²70.0 mm²49.62,3604,940496
MGM 118 Type 6110 3C × 95 mm² Cu-Scr SWA3 × 95 mm²95.0 mm²54.23,1806,020542
MGM 118 Type 6110 3C × 120 mm² Cu-Scr SWA3 × 120 mm²120.0 mm²58.03,9807,120580
MGM 118 Type 6110 3C × 185 mm² Cu-Scr SWA3 × 185 mm²185.0 mm²66.46,0809,680664
  • 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 British Coal MGM 118 / BS 6708 (Type 6110 3.8/6.6 kV Screened SWA).

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
Partial discharge (PD ≤ 5 pC) & 11 kV AC testPD ≤ 5 pC @ 1.73 U0; 11,000 V AC for 5 min per MGM 118100 % of drums
Phase, Cu screen & SWA DC resistanceCombined screen + armour conductance ≥ 75 % of one phase100 % of drums
Sample tests
GP5 HV-EPR hot-set & strippable semi-con peelBS 7655-1.2 & MGM 118 core screen peel forcePer production batch
Mining impact crush, impulse & flame testPass MGM 118 / BS 6708 60 kV BIL and flame approvalType approval

Inspection certificate

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

Product approvals

British Coal MGM 118 Type 6110BS 6708CE / UKCA

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MGM 118 TYPE 6110 3800/6600V
Delivery form
Non-returnable timber drums or heavy export
Standard drum lengths
250 m · 500 m · 1000 m · custom cut lengths
MOQ
100 m (stock variants) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFMGM 118 Type 6110 Cable – technical datasheet6 sizes · construction, technical data, approvalsXLSXMGM 118 Type 6110 spec data (Excel)All 6 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 does the designation 'Type 6110' mean in British Coal MGM 118?
In the 4-digit MGM 118 code '6110': '6' = 3.8/6.6 kV rated voltage; '1' = individually copper-tape screened phase cores; '1' = Single Wire Armour (SWA); and '0' = 3-core 6.6 kV roadway series. Each production drum undergoes 100 % conductor DC resistance verification,
Why is Type 6110 the preferred 6.6 kV cable for modern longwall district substations?
At 3.8/6.6 kV, triple-extruded semi-conductive screens and individual copper tape screens ('1') eliminate electrical stress concentrations in air voids between cores and ensure that any cable crush event immediately trips sensitive earth-fault protection before an inter-phase arc can develop. Each production drum undergoes 100
Can MGM 118 Type 6110 be supplied as Double Wire Armoured (Type 6120)?
Yes. While Type 6110 (SWA) is the standard for horizontal intake and gate roadways due to its lighter weight and 10×D bend radius, we also manufacture the double-wire-armoured counterpart (Type 6120 DWA) for vertical shaft installations. Each production drum undergoes 100 % conductor DC
Is the outer semi-conductive screen over the GP5 EPR insulation bonded or peelable?
MGM 118 Type 6110 is manufactured with an easily peelable (strippable) outer semi-conductive insulation screen so underground jointers can prepare clean 6.6 kV coupler and cold-shrink terminations without scoring the EPR dielectric. Each production drum undergoes 100 % conductor DC resistance verification, insulation thickness

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MGM 118 Type 6110 Cable

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