Get a Quote
MINING & TUNNELING CABLES TEBAOFLEX

Type 7 BS 6708 640/1100 V Coal Cutter Mining Cable

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

  • Model: Type 7
  • 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.

Product information
Brand
TEBAOFLEX
Product overview

Type 7 for excavating, crushing and coal-cutting machines

Type 7 mining cable is specified in the supplied BS 6708 datasheet for excavating, crushing and coal-cutting machines. 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 practical coal-cutter power route, not a generic promise of performance.

The supplied construction uses three individually screened phase cores, an unscreened pilot core and a bare earth conductor at the centre, with EPR insulation and a heavy-duty chloroprene sheath. That arrangement matters because The pilot is not screened; this is the key selection point against Type 7M, Type 7S and Type 11. The family should therefore be selected by model, core function and installation route as well as by voltage. The mining and tunnelling cable range provides the wider TEBAOFLEX product context.

  • Choose by: confirm that the equipment protection circuit expects an unscreened pilot and central bare earth conductor.
  • Confirm before ordering: 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.

Before treating a neighbouring Type number as interchangeable, use the BS 6708 mining cable replacement guide to check the screened and unscreened pilot boundaries for a coal-cutter route.

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 7 construction

The cross-section below is the supplied construction drawing for Type 7. The ordering decision is driven by The pilot is not screened; this is the key selection point against Type 7M, Type 7S and Type 11.

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

Source-listed construction

Construction elementSource-listed value
ConductorElectrolytic stranded tinned copper wire, IEC 60228 Class 5
InsulationEPR; ground core is not insulated
ScreenTinned copper and nylon braided screen over phase cores; pilot core is not screened
Lay-upThree phase cores and one unscreened pilot core laid up in contact with the bare earth conductor in the centre
SheathHeavy-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 7 applications

Type 7 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 machines. 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 7 construction separate from nearby Type numbers.

  • Primary duty: excavating, crushing and coal-cutting machines.
  • Model boundary: The pilot is not screened; this is the key selection point against Type 7M, Type 7S and Type 11.
  • 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.

When the equipment monitoring circuit calls for a screened pilot, compare this page with the Type 7M screened-pilot cable; the model change should be confirmed against the machine wiring diagram.

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.

Specifications

Type 7 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
ModelType 7
Rated voltage640/1100 V
Test voltage3 kV
Applicationexcavating, crushing and coal-cutting machines
Product standardBS 6708

Complete source-transcribed technical tables

Source PDF: BS6708_TYPE_7_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
ParameterValue
ConductorElectrolytic stranded tinned copper wire, IEC 60228 Class 5
InsulationEPR insulation; ground core is not insulated
SeparatorColoured textile tape for core identification
ScreenTinned copper and nylon braided screen over phase cores; pilot core is not screened
Lay-upThree phase cores and one unscreened pilot core laid up in contact with the bare earth conductor in the centre
BeddingRubber based bedding compound
Outer sheathHeavy duty chloroprene outer sheath
Source table 2, PDF page 1
ParameterValue
StandardBS 6708
Rated voltage640/1100 V
Test voltage3 kV
Cable typeComposite individually screened phase cores with unscreened pilot core and central bare earth conductor
Source table 1, PDF page 2
CORE DIMENSIONS
Nominal cross sectionPhase conductorPhase stranding mmCond. dia. mmInsul. dia. mmScreen dia. mmEarth conductorPilot conductor
3x16+16+163x16126/0.405.508.8511.151x161x16
3x25+16+163x25196/0.406.7510.3512.651x161x16
3x35+18+163x35276/0.408.0011.6013.901x181x16
3x50+25+253x50396/0.409.7513.6015.901x251x25
3x70+35+353x70360/0.5011.6015.7018.001x351x35
3x95+50+503x95475/0.5012.7517.2519.551x501x50
3x120+50+703x120608/0.5015.1020.0522.351x501x70
3x150+70+953x150740/0.5017.0022.2024.501x701x95
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+1635.838.630948024001070
3x25+16+1639.742.934364229501330
3x35+18+1643.146.337083435201690
3x50+25+2548.551.8414120046002320
3x70+35+3555.158.8470168062003190
3x95+50+5062.466.1529200079004300
3x120+50+7068.072.5580200096505100
3x150+70+9570.478.46272000115006500
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+16110125
3x35+18+16135150
3x50+25+25170200
3x70+35+35205250
3x95+50+50250310
3x120+50+70295355
3x150+70+95320385
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+161.241.240.660.1090.1314352.62
3x25+16+160.7951.240.560.1070.1283751.68
3x35+18+160.5651.240.540.1010.1213251.20
3x50+25+250.3930.7950.440.0980.1182850.84
3x70+35+350.2770.5650.300.0950.1142600.61
3x95+50+500.2100.3930.260.0940.1132500.47
3x120+50+700.1640.2770.240.0920.1102500.38
3x150+70+950.1320.2100.1760.0800.0962500.32

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.

Standards

Type 7 standards and references

SubjectSource-linked reference
Product standardBS 6708
Rated voltage640/1100 V
Test voltage3 kV
Source applicationexcavating, crushing and coal-cutting machines

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.

Compare by duty

Related cable options

Compare these cable options by service combination, movement, load, voltage and transmission requirement.

Engineering-led quotation

Request a cable recommendation and quotation

Send the required services, cable length, mechanical duty, environment, termination and quantity. Our team will review the application before quoting.

  • Include the product name or SKU plus the required cable length and quantity.
  • Attach a specification, drawing or data sheet when available.

    Optional: attach a cable specification, drawing, data sheet or product image (PDF, DOC, DOCX, XLS, XLSX, CSV, JPG or PNG; maximum 10 MB).

    By submitting this form, you agree that TEBAOFLEX may use the contact information and files provided to review and respond to your enquiry. Files are used for quotation and engineering communication related to your request. See our Privacy Policy for current data handling and retention information.

    * Required fields. Please include the key cable or application details for review.