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Product

MGM 111 / BS 6708 Type 620 pliable-armoured MV cable MGM 111 / BS 6708 T6203.8/6.6 kV EPR7/0.9 mm Pliable SWA

MGM 111 Type 620 3.8/6.6 kV Pliable-Armoured Mining CableMGM 111 Type 620 3.8/6.6 kV individually braid-screened and pliable galvanized-steel-armoured medium-voltage mining cable per MGM 111 and BS 6708 Type 620, built for mobile underground substations, roadway switchgear and heavy quarry feeders.

Engineered for underground mining, open-cast excavation, shaft infrastructure and heavy industrial service per MGM 111 / BS 6708 Type 620 / IEC 60228 across -25 to +90 °C.

EMC screen

Oil-resistant

Flame-retardant

Outdoor & humid

Configuration

Order designation: MGM 111 Type 620 3×50 + 1×25 mm²
Outer Ø ≈: 58.6 mm
Net weight ≈: 5,580 kg/km
Tensile rating ≈: 36.0 kN
Core / stranding: Class 5 tinned Cu

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 3.8/6.6 kV
Operating temp.: -25 to +90 °C
Min. bend radius: 10 × OD
Core / conductor: 3×35–120+1×25 E
Outer protection: Pliable SWA+PCP
Standard: BS 6708 T620

Typical values for this cable type, based on MGM 111 / BS 6708 Type 620 / IEC 60228 — confirmed in the datasheet and quotation for your order.

Application fit

Is MGM 111 Type 620 right for your machine?

Engineered for underground mining, open-cast excavation, shaft infrastructure and heavy industrial service per MGM 111 / BS 6708 Type 620 / IEC 60228 across -25 to +90 °C.

Trailing & towing

Suitable

Engineered for heavy-duty mobile mining and industrial trailing duty per MGM 111 / BS 6708 Type 620 / IEC 60228.

Mine roadway & tunnel wall hangers

Suitable

Suitable for underground coal/hard-rock roadways, shuttle cars and quarry feeders (-25 to +90 °C).

Fixed installation

Suitable

Can be installed on cable trays, hangers and mobile skid interconnections within 10 × OD.

Festoon & line chain

Not suitable

Not optimized for high-speed overhead crane C-track festoon loops; select a dedicated festoon cable.

NGFLGÖU Flat Rubber Festoon Cable

Typical machinesMining & TunnellingUnderground Coal & Hard-Rock MiningOpen-Cast Excavators, Draglines & ShovelsVertical Mine Shafts, Hoists & BoreholesTunneling, Mineral Processing & Slurry Plants

Construction

Layer by layer

Shown: MGM 111 Type 620 (MGM 111 / BS 6708 Type 620 / IEC 60228) featuring phase conductors (3×50 mm²), epr insulation & composite braid and separator tape & pcp outer sheath (5-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Phase Conductors (3×50 mm²)	IEC 60228 Class 5 flexible tinned copper + semicon conductor screen
2	EPR Insulation & Composite Braid	5.0 mm EPR + semicon layer + tinned copper/nylon braid screen
3	Earth Conductor (1×25 mm²)	Uninsulated flexible tinned copper conductor with composite braid screen
4	Black Bedding & Pliable Steel Armour	Black rubber inner bedding + 7/0.9 mm galvanized steel strand armour
5	Separator Tape & PCP Outer Sheath	Water-blocking separator tape + black heavy-duty PCP outer jacket

MGM 111 Type 620 — Standard Mining Execution

Built to MGM 111 / BS 6708 Type 620 / IEC 60228 with phase conductors (3×50 mm²) and separator tape & pcp outer sheath

MGM 111 Type 620 — Custom Drum Length & Gland Kit

Available in custom shaft/roadway drum lengths or pre-terminated assemblies

MGM 111 Type 620 — Routine & Flame Test Certified

Supplied with EN 10204 3.1 routine dielectric, resistance & flame test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MGM 111 / BS 6708 Type 620 / IEC 60228. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: 3.8/6.6 kV (MGM 111 / BS 6708 Type 620 / IEC 60228)
Core / conductor construction: Phase Conductors (3×50 mm²) — IEC 60228 Class 5 flexible tinned copper + semicon conductor screen
Primary dielectric / buffering: EPR Insulation & Composite Braid — 5.0 mm EPR + semicon layer + tinned copper/nylon braid screen

Thermal

Continuous operating temperature: -25 to +90 °C (mining & industrial service)
Short-circuit / peak thermal rating: Verified thermal stability per MGM 111 / BS 6708 Type 620 / IEC 60228
Storage & transport temperature: −40…+80 °C on export wooden/steel drum

Mechanical

Outer protection / armouring: Separator Tape & PCP Outer Sheath — Water-blocking separator tape + black heavy-duty PCP outer jacket
Minimum bending radius: 10 × OD
Crush, impact & abrasion duty: Heavy-duty mining rock-cut, impact and tensile protection per MGM 111 / BS 6708 Type 620 / IEC 60228

Resistance

Flame retardancy & mine fire safety: Self-extinguishing / flame-retardant mining jacket per MGM 111 / BS 6708 Type 620 / IEC 60228
Mine water, oil & chemical resistance: Resistant to acidic mine water, hydraulic oils and abrasion per MGM 111 / BS 6708 Type 620 / IEC 60228
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: MGM 111 / BS 6708 Type 620 / IEC 60228
Flame & environmental test standards: IEC 60332 / MSHA / EN 60794 / IEC 60228
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: MGM 111 Type 620
Sheath colour & metre marking: Continuous metre-marked black mining outer sheath
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard MGM 111 Type 620 mining & industrial configurations

Manufactured to MGM 111 / BS 6708 Type 620 / IEC 60228 for underground mining, open-cast excavation, shaft and heavy industrial systems.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Tensile rating kN ≈	Min. bend R mm
MGM 111 Type 620 Construction Schedule (-25 to +90 °C)
MGM 111 Type 620 3×35 + 1×16 mm²	3 × 35 mm² + 1 × 16 mm² (E)	Class 5 tinned Cu	54.0	4,620	28.0	540
MGM 111 Type 620 3×50 + 1×25 mm²	3 × 50 mm² + 1 × 25 mm² (E)	Class 5 tinned Cu	58.6	5,580	36.0	585
MGM 111 Type 620 3×95 + 1×35 mm²	3 × 95 mm² + 1 × 35 mm² (E)	Class 5 tinned Cu	69.4	8,190	55.0	695

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour grades and factory drum lengths available per MGM 111 / BS 6708 Type 620 / IEC 60228.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
3 × 35 mm² + 1 × 16 mm² (E)	0.57	3.8/6.6 kV (155 A)	-25 to +90 °C
3 × 50 mm² + 1 × 25 mm² (E)	0.39	3.8/6.6 kV (190 A)	-25 to +90 °C
3 × 95 mm² + 1 × 35 mm² (E)	0.21	3.8/6.6 kV (280 A)	-25 to +90 °C

Every production length undergoes routine conductor DC resistance, high-voltage Spark/AC dielectric or OTDR continuity and dimensional verification.

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.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor resistance, continuity & dimensional verification (MGM 111 / BS 6708 Type 620 / IEC 60228)	DC resistance at 20 °C / optical attenuation and outer diameter within MGM 111 / BS 6708 Type 620 / IEC 60228 tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (MGM 111 / BS 6708 Type 620 / IEC 60228)	Zero dielectric breakdown and verified insulation resistance over full production length	Every manufactured drum length
Sample tests
Flame propagation, mechanical crush & thermal ageing qualification (MGM 111 / BS 6708 Type 620 / IEC 60228)	Verified flame retardancy, mechanical integrity and thermal endurance across -25 to +90 °C	Type qualification & periodic lot audit

Inspection certificate

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

Product approvals

BS 6708 T620 CompliantEN 10204 3.1 Factory Test CertificateCE, 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 620 BS 6708 T620 3.8/6.6 kV CE

Delivery form: Heavy-duty export fumigated wooden drums or steel mine reels
Standard lengths: 500 m, 1,000 m or custom continuous shaft/reeling lengths
MOQ: 100 m (standard configurations) · 500 m (custom builds)
Lead time: 2–5 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFMGM 111 Type 620 3.8/6.6 kV Pliable-Armoured Mining Cable – technical datasheet3 sizes · construction, technical data, approvals XLSXMGM 111 Type 620 spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-24
Updated: 2026-10-24

FAQ

Questions engineers ask first

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

What governing standard and construction define MGM 111 Type 620 (MGM 111 Type 620 3.8/6.6 kV Pliable-Armoured Mining Cable)?

MGM 111 Type 620 (MGM 111 Type 620 3.8/6.6 kV Pliable-Armoured Mining Cable) is manufactured in accordance with MGM 111 / BS 6708 Type 620 / IEC 60228 for 3.8/6.6 kV duty over -25 to +90 °C. Its 5-layer construction comprises Phase Conductors (3×50 mm²), EPR Insulation & Composite Braid and Separator Tape & PCP Outer Sheath.

What is the minimum bending radius and operating temperature range for MGM 111 Type 620?

The minimum bending radius for MGM 111 Type 620 is 10 × OD across its continuous operating temperature range of -25 to +90 °C, ensuring mechanical and dielectric reliability in mining and heavy industrial service.

How are the concentric layers of MGM 111 Type 620 arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Phase Conductors (3×50 mm²) (IEC 60228 Class 5 flexible tinned copper + semicon conductor screen); (02) EPR Insulation & Composite Braid (5.0 mm EPR + semicon layer + tinned copper/nylon braid screen); (03) Earth Conductor (1×25 mm²) (Uninsulated flexible tinned copper conductor with composite braid screen); (04) Black Bedding & Pliable Steel Armour (Black rubber inner bedding + 7/0.9 mm galvanized steel strand armour); (05) Separator Tape & PCP Outer Sheath (Water-blocking separator tape + black heavy-duty PCP outer jacket).

What factory test certificates are supplied with MGM 111 Type 620?

Every production drum of MGM 111 Type 620 undergoes routine conductor resistance/continuity, high-voltage dielectric and dimensional testing per MGM 111 / BS 6708 Type 620 / IEC 60228, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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02Reel & motion

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Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

MGM 111 Type 620 3.8/6.6 kV Pliable-Armoured Mining Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
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