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Product

Heavy-duty rubber cables (NSSHÖU)MGM 111 · BS 6708U0/U 1.9/3.3 kVCu/Nylon Screen · PWA

MGM 111 Type 320 / 321 Screened Armoured MV Rubber Cable1.9/3.3 kV screened pliable-wire-armoured mining rubber cable (MGM 111 Type 320 & 321)

Medium-voltage 1.9/3.3 kV underground mining cable to MGM 111 (BS 6708 aligned) in Type 320 (3 screened phase cores) and Type 321 (3 screened phase cores + 1 earth core) with GP8 EPR insulation, copper/nylon phase screens, steel PWA and PCP outer sheath.

EMC screen
Oil-resistant
Flame-retardant
Outdoor & humid
Order designation
MGM 111 Type 321 3×50+1×25
Outer Ø min
46.0 mm
Outer Ø max
50.0 mm
Weight ≈
4,590 kg/km
Min. bend R
300 mm
Check against my drumAll sizes (15)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
1.9/3.3 kV
1,900/3,300 V AC · 7.5 kV test
Conductor temp.
+90 °C max.
+250 °C short-circuit (5 s)
Ambient temp.
−25…+80 °C
Flexing (−40…+80 °C fixed)
Bending radius
6–8 × OD
6 × OD fixed · 8 × OD flexing
Armour & screen
Cu/PA + PWA
Individual phase screen + steel PWA
Size range
16–150 mm²
Type 320 (3C) & Type 321 (3P+E)

Typical values for this cable type, based on MGM 111 / BS 6708 — confirmed in the datasheet and quotation for your order.

Application fit

Is MGM 111 Type 320 / 321 right for your machine?

MGM 111 Type 320 and Type 321 are designed for 3.3 kV underground mine roadway feeders, gate-end switchgear interconnections, armoured face conveyors and longwall stage loaders where both individual phase earth-fault screening and pliable steel wire armour are mandatory.

Trailing & towing

Suitable

Pliable-wire-armoured roadway feeders, mobile transformer links, stage loaders and semi-mobile mining plant.

Fixed installation

Suitable

Underground gallery cleats, shaft insets, flameproof switchgear interconnects and crusher substations.

Immersion & wet locations

Suitable

Heavy-duty polychloroprene (RS4/EM2) outer jacket resists wet mine roadways, rock abrasion and oil.

Motorised monospiral reel

Not suitable

Pliable wire armour (PWA) is for armoured roadway and machine interconnects, not fast crane drums.

Use (N)TSCGEWÖU Reeling
Typical machinesUnderground hard-coal & lignite minesLongwall face & gate-end distributionFlameproof 3.3 kV mine transformersSubterranean roadway & gallery feedersPotash, trona & metallic ore mines

Construction

Layer by layer

Shown: MGM 111 Type 321 3×50+1×25 — 3 EPR-insulated 50 mm² phase cores with individual copper/nylon braid screens + 1 unscreened 25 mm² earth core around a central elastomeric cradle, rubber inner bedding, galvanised steel pliable wire armour (PWA) and black PCP outer sheath.

1234567
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Tinned copper conductorFine-stranded annealed tinned copper wire (IEC 60228 / BS EN 60228 Class 5)IEC 60228 Class 5
2MV EPR core insulationCross-linked ethylene-propylene rubber compound Type GP8 (+90 °C rated for 1.9/3.3 kV)BS 7655-1.2 GP8 / MGM 111
3Individual phase screenComposite tinned-copper and nylon (polyamide) braided earth screen applied over each of the 3 phase coresMGM 111 / BS 6708 phase screen
4Elastomeric cradle separatorProfilated rubber central cradle maintaining core geometry and cushioning radial impactMGM 111 cradle center
5Elastomeric inner beddingExtruded vulcanised rubber inner sheath over the laid-up coresMGM 111 inner sheath
6Pliable wire armour (PWA)Stranded galvanised steel wire armour (PWA) providing high crush resistance and earth-fault conductanceMGM 111 / BS 6708 PWA
7Heavy-duty PCP outer sheathCross-linked polychloroprene (PCP / Type RS4 / EM2) extra-heavy-duty outer sheath, blackBS 7655-2.1 / IEC 60332-1-2

MGM 111 Type 320 (3×16 to 3×150 mm²)

3 individually copper/nylon-screened 1.9/3.3 kV phase cores laid around an elastomeric cradle + inner sheath + PWA + PCP jacket

MGM 111 Type 321 (3×16+16 to 3×150+95 mm²)

3 individually copper/nylon-screened 1.9/3.3 kV phase cores + 1 unscreened earth core around cradle + inner sheath + PWA + PCP jacket

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MGM 111 / BS 6708. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
1.9/3.3 kV (1,900/3,300 V AC · Um 3.6 kV)
AC test voltage
7.5 kV AC (50 Hz, 5 min)
Conductor stranding
IEC 60228 / BS EN 60228 Class 5 tinned copper
Phase core screening
Individual tinned-copper/nylon braid over each phase core
Earth fault conductance
Combined phase screens + galvanised steel PWA meet BS 6708 armour conductance

Thermal

Max. conductor temperature
+90 °C continuous operation
Short-circuit temperature
+250 °C max. (up to 5 s)
Temperature, flexing
−25 °C to +80 °C
Temperature, fixed
−40 °C to +80 °C

Mechanical

Min. bending radius, fixed
6 × overall diameter
Min. bending radius, moving
8 × overall diameter
Armour construction
Galvanised steel pliable wire armour (PWA) in multi-wire strands
Impact & crush duty
Extra-heavy underground roadway & rock-fall duty

Resistance

Flame retardance
IEC 60332-1-2 / BS EN 60332-1-2 underground mine flame test
Oil & hydraulic emulsion
EN 60811-404 mineral oil, grease & fire-resistant fluid resistant
Water & mine dampness
Resistant to acidic/alkaline coal-mine water and mud
Abrasion & tear
Heavy-duty RS4/EM2 polychloroprene sheath resists floor drag

Reference standards

Primary specification
TTK MGM 111 (Type 320 & Type 321) aligned with BS 6708
Compound standards
BS 7655-1.2 GP8 (EPR) & BS 7655-2.1 RS4 / EN 50363 EM2 (PCP)
Conductor standard
IEC 60228 / BS EN 60228 Class 5
RoHS & REACH
2011/65/EU (RoHS 2) & EC 1907/2006 compliant

Identification

Sheath colour
Black
Core identification
Phase cores identified under screen + unscreened earth core (Type 321)
Sheath marking
TEBAOFLEX MGM 111 TYPE 320 / 321 [Size] 1900/3300V MINING CABLE
Customs tariff (HS)
8544.60 (insulated electric conductors > 1000 V)

Sizes

15 standard MGM 111 Type 320 / 321 configurations

Typical MGM 111 / BS 6708 outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designationCores × mm²AWG ≈Outer Ø min
mm		Outer Ø max
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
mm		Enquiry
MGM 111 Type 320 — 3 Screened Phase Cores + Pliable Wire Armour (1.9/3.3 kV)
MGM 111 Type 320 3×163×16632.735.55802,120213
MGM 111 Type 320 3×253×25436.139.28502,680235
MGM 111 Type 320 3×353×35239.142.51,1403,250255
MGM 111 Type 320 3×503×50143.146.81,5904,050281
MGM 111 Type 320 3×703×702/047.351.42,1905,080308
MGM 111 Type 320 3×953×953/051.756.22,9406,290337
MGM 111 Type 320 3×1203×1204/055.760.53,6907,480363
MGM 111 Type 321 — 3 Screened Phase Cores + 1 Earth Core + Pliable Wire Armour (1.9/3.3 kV)
MGM 111 Type 321 3×16+1×163×16+1×16635.038.07302,450228
MGM 111 Type 321 3×25+1×163×25+1×16438.541.81,0003,040251
MGM 111 Type 321 3×35+1×253×35+1×25241.845.41,3803,720272
MGM 111 Type 321 3×50+1×253×50+1×25146.050.01,8304,590300
MGM 111 Type 321 3×70+1×353×70+1×352/050.454.82,5205,740329
MGM 111 Type 321 3×95+1×503×95+1×503/055.460.23,4207,120361
MGM 111 Type 321 3×120+1×703×120+1×704/059.664.84,3608,490389
MGM 111 Type 321 3×150+1×953×150+1×95300 kcmil63.969.55,49010,120417
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are typical values per MGM 111 / BS 6708. Minimum fixed bending radius shown is 6 × OD.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Check results

Drum core 300 mm is below 600 mmUse a larger drum core or a smaller cable size
Minimum bending radius
300 mm
Min. drum core diameter
≈ 600 mm
Cable weight on drum
229.5 kg
Copper content
91.5 kg
Indicative only: based on the datasheet outer diameter and 6 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

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
AC voltage test7.5 kV AC (50 Hz)Every manufactured length
Conductor DC resistanceIEC 60228 Class 5 (tinned copper)Every manufactured length
Sample tests
Vertical flame propagationIEC 60332-1-2 / EN 60332-1-2Per production batch
Insulation & sheath elastomer physical propertiesMGM 111 / BS 6708Type approval

Inspection certificate

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

Product approvals

MGM 111 / BS 6708CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MGM 111 TYPE 320 / 321 [Size] 1900/3300 V MINING CABLE
Delivery form
Export wooden drums or coils, cut-to-length on request
Packaging
Heat-treated ISPM-15 timber drums with sealed cable ends
Conductor / sheath options
Custom core counts, pilot cores or sheath colours on request

Technical documents

Downloads

PDFMGM 111 Type 320 / 321 Screened Armoured MV Rubber Cable – technical datasheet15 sizes · construction, technical data, approvalsXLSXMGM 111 Type 320 / 321 spec data (Excel)All 15 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 difference between MGM 111 Type 320 and Type 321?
Both Type 320 and Type 321 are 1.9/3.3 kV pliable-wire-armoured underground mining cables with individual copper/nylon composite screens on the three phase cores. Type 320 is a 3-core construction (3 screened phase cores laid around an elastomeric cradle, using the phase screens and steel armour as the earth path), whereas Type 321 is a 4-core construction that adds a dedicated fourth unscreened tinned-copper earth conductor in the cradle lay.
How do MGM 111 Type 321 and MGM 112 Type 331 compare?
In TTK / BS 6708 mining nomenclature, MGM 111 Type 321 (and MGM 112 Type 331) provides 3 individually copper/nylon-screened 1.9/3.3 kV phase cores + 1 unscreened earth core + pliable wire armour, whereas MGM 112 Type 321 is the unscreened-core 4-core 1.9/3.3 kV pliable-wire-armoured variant.
Why is pliable wire armour (PWA) used instead of single-wire armour (SWA)?
Unlike rigid solid-galvanised-wire armour (SWA) on fixed utility cables, pliable wire armour (PWA) is laid up from multi-wire strands of fine galvanised steel. This allows 3.3 kV underground mine roadway feeders and stage-loader cables to be repeatedly advanced and re-routed as the longwall face progresses.
What is the function of the copper/nylon composite phase screen?
Each 1.9/3.3 kV phase core is braided with tinned copper wires and high-tenacity nylon yarns. If a rock fall or tool penetrates a core, it contacts the earthed copper/nylon screen before reaching a live phase, tripping the sensitive earth-fault relay immediately.

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MGM 111 Type 320 / 321 Screened Armoured MV Rubber Cable

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Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
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- Exposure (outdoor, water, oil, abrasion): 
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