
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.
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 Ассортимент кабелей для горнодобывающей и туннельной промышленности provides the wider TEBAOFLEX product context.
- Выберите по: confirm that the equipment protection circuit expects an unscreened pilot and central bare earth conductor.
- Подтвердите перед заказом: 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.
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.

Source-listed construction
| Элемент конструкции | Значение по исходным данным |
|---|---|
| Дирижер | Electrolytic stranded tinned copper wire, IEC 60228 Class 5 |
| Изоляция | EPR; ground core is not insulated |
| Экран | Tinned copper and nylon braided screen over phase cores; pilot core is not screened |
| бросок | Three phase cores and one unscreened pilot core laid up in contact with the bare earth conductor in the centre |
| Ножны | Heavy-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.
Type 7 applications

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.
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 item | Source-linked value |
|---|---|
| Модель | Type 7 |
| Номинальное напряжение | 640/1100 В |
| Испытательное напряжение | 3 кВ |
| Приложение | excavating, crushing and coal-cutting machines |
| Стандарт изделия | BS 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.
| Параметр | Ценить |
|---|---|
| Дирижер | Electrolytic stranded tinned copper wire, IEC 60228 Class 5 |
| Изоляция | EPR insulation; ground core is not insulated |
| Сепаратор | Coloured textile tape for core identification |
| Экран | Tinned copper and nylon braided screen over phase cores; pilot core is not screened |
| бросок | Three phase cores and one unscreened pilot core laid up in contact with the bare earth conductor in the centre |
| Постельные принадлежности | Rubber based bedding compound |
| Внешняя оболочка | Heavy duty chloroprene outer sheath |
| Параметр | Ценить |
|---|---|
| Стандарт | BS 6708 |
| Номинальное напряжение | 640/1100 В |
| Испытательное напряжение | 3 кВ |
| Тип кабеля | Composite individually screened phase cores with unscreened pilot core and central bare earth conductor |
| CORE DIMENSIONS | |||||||
|---|---|---|---|---|---|---|---|
| Nominal cross section | Фазовый проводник | Phase stranding mm | Cond. dia. mm | Insul. dia. mm | Screen dia. mm | Заземляющий проводник | Pilot conductor |
| 3x16+16+16 | 3x16 | 126/0.40 | 5.50 | 8.85 | 11.15 | 1x16 | 1x16 |
| 3x25+16+16 | 3x25 | 196/0.40 | 6.75 | 10.35 | 12.65 | 1x16 | 1x16 |
| 3x35+18+16 | 3x35 | 276/0.40 | 8.00 | 11.60 | 13.90 | 1x18 | 1x16 |
| 3x50+25+25 | 3x50 | 396/0.40 | 9.75 | 13.60 | 15.90 | 1x25 | 1x25 |
| 3x70+35+35 | 3x70 | 360/0.50 | 11.60 | 15.70 | 18.00 | 1x35 | 1x35 |
| 3x95+50+50 | 3x95 | 475/0.50 | 12.75 | 17.25 | 19.55 | 1x50 | 1x50 |
| 3x120+50+70 | 3x120 | 608/0.50 | 15.10 | 20.05 | 22.35 | 1x50 | 1x70 |
| 3x150+70+95 | 3x150 | 740/0.50 | 17.00 | 22.20 | 24.50 | 1x70 | 1x95 |
| CABLE DETAILS | ||||||
|---|---|---|---|---|---|---|
| Nominal cross section | Min. OD mm | Max. OD mm | Min. bend radius mm | Max pulling tension kgf | Approx. weight kg/km | Copper weight kg/km |
| 3x16+16+16 | 35.8 | 38.6 | 309 | 480 | 2400 | 1070 |
| 3x25+16+16 | 39.7 | 42.9 | 343 | 642 | 2950 | 1330 |
| 3x35+18+16 | 43.1 | 46.3 | 370 | 834 | 3520 | 1690 |
| 3x50+25+25 | 48.5 | 51.8 | 414 | 1200 | 4600 | 2320 |
| 3x70+35+35 | 55.1 | 58.8 | 470 | 1680 | 6200 | 3190 |
| 3x95+50+50 | 62.4 | 66.1 | 529 | 2000 | 7900 | 4300 |
| 3x120+50+70 | 68.0 | 72.5 | 580 | 2000 | 9650 | 5100 |
| 3x150+70+95 | 70.4 | 78.4 | 627 | 2000 | 11500 | 6500 |
| CURRENT RATINGS | ||
|---|---|---|
| Nominal cross section | Continuous current rating at 25 deg C | Intermittent current rating at 25 deg C |
| 3x16+16+16 | 85 | 96 |
| 3x25+16+16 | 110 | 125 |
| 3x35+18+16 | 135 | 150 |
| 3x50+25+25 | 170 | 200 |
| 3x70+35+35 | 205 | 250 |
| 3x95+50+50 | 250 | 310 |
| 3x120+50+70 | 295 | 355 |
| 3x150+70+95 | 320 | 385 |
| ELECTRICAL DETAILS | |||||||
|---|---|---|---|---|---|---|---|
| Nominal cross section | Phase DC res. 20 deg C ohm/km | Pilot DC res. 20 deg C ohm/km | Screens+earth res. ohm/km | LReactance 50 Hz ohm/km | Reactance 60 Hz ohm/km | Min. insul. res. Mohm/km | Voltage drop mV/A/m |
| 3x16+16+16 | 1.24 | 1.24 | 0.66 | 0.109 | 0.131 | 435 | 2.62 |
| 3x25+16+16 | 0.795 | 1.24 | 0.56 | 0.107 | 0.128 | 375 | 1.68 |
| 3x35+18+16 | 0.565 | 1.24 | 0.54 | 0.101 | 0.121 | 325 | 1.20 |
| 3x50+25+25 | 0.393 | 0.795 | 0.44 | 0.098 | 0.118 | 285 | 0.84 |
| 3x70+35+35 | 0.277 | 0.565 | 0.30 | 0.095 | 0.114 | 260 | 0.61 |
| 3x95+50+50 | 0.210 | 0.393 | 0.26 | 0.094 | 0.113 | 250 | 0.47 |
| 3x120+50+70 | 0.164 | 0.277 | 0.24 | 0.092 | 0.110 | 250 | 0.38 |
| 3x150+70+95 | 0.132 | 0.210 | 0.176 | 0.080 | 0.096 | 250 | 0.32 |
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.
Type 7 standards and references
| Параметр | Source-linked reference |
|---|---|
| Стандарт изделия | BS 6708 |
| Номинальное напряжение | 640/1100 В |
| Испытательное напряжение | 3 кВ |
| Source application | excavating, 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.
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