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CÂBLES MINIERS ET DE TUNNELAGE Modèle / construction

Type 7M BS 6708 640/1100 V Screened Pilot Mining Cable

Type 7M mining cable for excavating, crushing and coal-cutting equipment, with the source-defined 640/1100 V rating and 3 kV test reference.

  • Model: Type 7M
  • Conductor and insulation: flexible tinned copper with the insulation and core construction listed for this model in the supplied PDF
  • Screen, pilot, earth and armour arrangement preserved from the source datasheet
  • Heavy-duty chloroprene or PCP outer protection as listed for this model
  • Original Type datasheet available as the product download

Send the equipment, voltage, conductor area, route, quantity and document requirements for an RFQ.

Informations sur le produit
Marque
Modèle / construction
Présentation du produit

Type 7M for excavating, crushing and coal-cutting equipment

Type 7M mining cable is specified in the supplied BS 6708 datasheet for excavating, crushing and coal-cutting equipment. This page keeps the source-listed voltage, test reference, core functions and dimensional tables together so a procurement engineer can compare the requested model against the cable marking and the equipment connection. The editorial focus is the screened-pilot choice for coal-cutter supply, not a generic promise of performance.

The supplied construction uses three individually screened phase cores and one individually screened pilot core laid up in contact with the central bare earth conductor, using EPR insulation and a heavy-duty chloroprene sheath. That arrangement matters because Type 7M screens the pilot; do not substitute it for Type 7 when the existing marking or protection design calls for an unscreened pilot. The family should therefore be selected by model, core function and installation route as well as by voltage. The gamme de câbles pour l'exploitation minière et le creusement de tunnels provides the wider TEBAOFLEX product context.

  • Choisir par : confirm whether the machine monitoring circuit requires the pilot to be screened together with the phase cores.
  • Confirmez avant de commander : existing sheath marking, conductor area, cable length, route, support or handling system, terminations and the required inspection documents.
  • Do not infer: values not listed in the supplied PDF, such as a different current basis, water/oil/UV performance, certification scope or mechanical interchangeability.

For a project-level view of machine routing and cable selection, review the Mining & Tunnelling solutions page alongside this Type 7M datasheet.

For a technical quotation, send the equipment nameplate or existing cable marking, voltage and size requirement, installation conditions, quantity, destination and any project-specific test or documentation requirement.

Construction

Type 7M construction

The cross-section below is the supplied construction drawing for Type 7M. The ordering decision is driven by Type 7M screens the pilot; do not substitute it for Type 7 when the existing marking or protection design calls for an unscreened pilot.

Type 7M cable cross-section showing the supplied power, pilot, earth, screen and protection arrangement
Supplied Type 7M cross-section; the exact core and armour arrangement must be checked against the product datasheet.

Source-listed construction

Élément de constructionValeur indiquée dans la source
ConducteurElectrolytic stranded tinned copper wire, IEC 60228 Class 5
IsolationEPR; ground core is not insulated
ÉcranTinned copper and nylon braided screen over phase and pilot cores
Lay-upThree phase cores and one pilot core, all individually screened, laid up in contact with the bare earth conductor in the centre
GaineHeavy-duty chloroprene outer sheath

Do not use the drawing as a substitute for the dimensional tables. Confirm the cable end preparation, screen and earth termination, armour bonding and machine interface with the equipment documentation before installation.

Applications

Type 7M applications

Type 7M mining cable application with underground longwall mining equipment
Media-library application scene showing underground longwall mining equipment; used for application context, not as a model-specific construction proof.

The supplied datasheet identifies this cable for excavating, crushing and coal-cutting equipment. Google result patterns for the BS 6708 family also separate cables by equipment duty, voltage class, core function and whether the route is armoured, screened, flat or auxiliary. That is why this page keeps the Type 7M construction separate from nearby Type numbers.

  • Primary duty: excavating, crushing and coal-cutting equipment.
  • Model boundary: Type 7M screens the pilot; do not substitute it for Type 7 when the existing marking or protection design calls for an unscreened pilot.
  • Project check: match the cable marking, core map, voltage, termination, route geometry and handling method to the machine drawing.
  • Environmental review: confirm the actual mine/quarry conditions and any authority, inspection or documentation requirements; do not infer a certification or material-resistance claim from the model number.

If the intended pilot is unscreened, the Type 7 coal-cutter cable is the relevant nearby reference; select between the two from the specified pilot and earth arrangement, not from voltage alone.

The cable should be released only after the equipment route, required length, conductor area, core functions and connection details are agreed. If the intended duty is different from the source-listed application, request an engineering review through the quotation process.

Caractéristiques

Type 7M specifications

The summary below identifies the supplied model family. The source-transcribed tables that follow retain the PDF's dimensional, electrical and construction values, including available sizes, resistance, current, diameter, mass, bending or pulling data when the PDF provides them.

Selection itemSource-linked value
ModèleType 7M
Tension nominale640/1100 V
Tension d'essai3 kV
Applicationexcavating, crushing and coal-cutting equipment
Norme du produitBS 6708

Complete source-transcribed technical tables

Source PDF: BS6708_TYPE_7M_640_1100V_CABLE_datasheet.pdf; 3 pages; 6 extracted tables. Values are not recalculated or replaced by third-party values.

Source table 1, PDF page 1
ParamètreValeur
ConducteurElectrolytic stranded tinned copper wire, IEC 60228 Class 5
IsolationEPR insulation; ground core is not insulated
SéparateurColoured textile tape for core identification
ÉcranTinned copper and nylon braided screen over phase and pilot cores
Lay-upThree phase cores and one pilot core, all individually screened, laid up in contact with the bare earth conductor in the centre
LiterieRubber based bedding compound
gaine extérieureHeavy duty chloroprene outer sheath
Source table 2, PDF page 1
ParamètreValeur
StandardBS 6708
Tension nominale640/1100 V
Tension d'essai3 kV
Type de câbleComposite individually screened phase and pilot cores with central bare earth conductor
Source table 1, PDF page 2
CORE DIMENSIONS
Nominal cross sectionconducteur de phasePhase stranding mmCond. dia. mmInsul. dia. mmScreen dia. mmconducteur de terrePilot conductor
3x16+16+163x16126/0.405.508.8511.151x161x16
3x25+16+253x25196/0.406.7510.3512.651x161x25
3x35+18+353x35276/0.408.0011.6013.901x181x35
3x50+25+503x50396/0.409.7513.6015.901x251x50
3x70+35+703x70360/0.5011.6015.7018.001x351x70
3x95+50+953x95475/0.5012.7517.2519.551x501x95
3x120+50+1203x120608/0.5015.1020.0522.351x501x120
3x150+70+1503x150740/0.5017.0022.2024.501x701x150
Source table 2, PDF page 2
CABLE DETAILS
Nominal cross sectionMin. OD mmMax. OD mmMin. bend radius mmMax pulling tension kgfApprox. weight kg/kmCopper weight kg/km
3x16+16+1635.838.630948025001130
3x25+16+2539.742.934364231501380
3x35+18+3543.146.337083436501800
3x50+25+5048.551.8414120047002450
3x70+35+7055.158.8470168063503350
3x95+50+9562.466.1529200082004500
3x120+50+12068.072.5580200099005300
3x150+70+15070.478.46272000118007350
Source table 1, PDF page 3
CURRENT RATINGS
Nominal cross sectionContinuous current rating at 25 deg CIntermittent current rating at 25 deg C
3x16+16+168596
3x25+16+25110125
3x35+18+35135150
3x50+25+50170200
3x70+35+70205250
3x95+50+95250310
3x120+50+120295355
3x150+70+150320385
Source table 2, PDF page 3
ELECTRICAL DETAILS
Nominal cross sectionPhase DC res. 20 deg C ohm/kmPilot DC res. 20 deg C ohm/kmScreens+earth res. ohm/kmLReactance 50 Hz ohm/kmReactance 60 Hz ohm/kmMin. insul. res. Mohm/kmVoltage drop mV/A/m
3x16+16+161.241.240.580.1090.1314352.62
3x25+16+250.7950.7950.470.1070.1283751.68
3x35+18+350.5650.5650.450.1010.1213251.20
3x50+25+500.3930.3930.380.0980.1182850.84
3x70+35+700.2770.2770.270.0950.1142600.61
3x95+50+950.2100.2100.230.0940.1132500.47
3x120+50+1200.1640.1640.210.0920.1102500.38
3x150+70+1500.1320.1320.1580.0800.0962500.32

Use the table values with the equipment drawing and approved termination plan. If the requested conductor area, current basis, mechanical limit or environmental condition is not listed in the supplied PDF, treat it as a quotation-stage confirmation item.

Normes

Type 7M standards and references

ObjetSource-linked reference
Norme du produitBS 6708
Tension nominale640/1100 V
Tension d'essai3 kV
Source applicationexcavating, crushing and coal-cutting equipment

The product page preserves the BS 6708 reference appearing in the supplied PDF. The BSI record currently identifies BS 6708:1998 as withdrawn on 22 May 2026; this status note is a standards-reference update, not a claim that the product is currently certified or approved. See the official BSI BS 6708 scope record for the published status.

For an RFQ, state the required standard documents, inspection scope, test report, cable marking, destination rules and any replacement-equivalence requirement. The model number alone does not establish legal installation compliance.

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