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Product

Mining trailing & reeling cablesBS 6708 Type 506 / 512 / 518 / 524320/550 V · 6 to 24 CoresIndividually Screened + Pliable Armour

BS 6708 Type 506, 512, 518 & 524 Control Cable (320/550 V)320/550 V individually screened multi-core pliable-armoured control cable (6–24 cores)

BS 6708 Type 506 (6×1.34 mm²), 512 (12×1.34 mm²), 518 (18×1.34 mm²) and 524 (24×0.93 mm²) pliable-armoured 320/550 V mining control cables with copper/nylon braided core screens, 7/0.45 mm pliable steel armour and PCP sheath.

EMC screen
Flame-retardant
Oil-resistant
Water-resistant
Order designation
Type 512 · 12 × 1.34 mm²
Cores
12 cores
Core CSA
1.34 mm²
Max. OD
23.6 mm
Mass ≈
1,200 kg/km
Check against my drumAll sizes (4)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
320/550 V
1.5 kV AC routine test
Core counts
6, 12, 18 & 24C
506 · 512 · 518 · 524
Core screening
Cu/Nylon Braid
Every core screened
Ampacity (25 °C)
8–16 A
Continuous control duty
Operating temp.
−25 to +85 °C
EPR/TPE + PCP
Min. bend radius
10 × OD (236+)
7/0.45 mm pliable armour

Application fit

Is BS 6708 Type 506 / 512 / 518 / 524 (320/550 V) right for your machine?

Pliable wire-armoured 6-, 12-, 18- and 24-core underground mine control, protection and interlock cable to BS 6708 Types 506, 512, 518 & 524.

Mine roadway & tunnel wall hangers

Suitable

Primary duty — roadway hanger runs linking flameproof switchgear, conveyor monitoring and telemetry.

Fixed installation

Suitable

Armoured multi-core control cable for underground substations, shafts and wash-plant gantries.

Trailing & towing

With conditions

Pliable armour permits periodic relocation along advancing gate roads.

Motorised monospiral reel

Not suitable

Wire-armoured control cable — never wind onto dynamic reeling drums.

Use (N)SHTÖU Control Reel
Typical machinesLongwall roof support & AFC controlMulti-segment mining machine harnessesGate-end pilot & emergency-stop interlocksRoadheader & continuous miner telemetryDeep gassy & dusty coal mine control trunksSurface quarry crusher & conveyor interlocking

Construction

Layer by layer

Six, twelve, eighteen (1.34 mm², 19/0.30 mm) or twenty-four (0.93 mm², 19/0.25 mm) IEC 60228 Class 5 tinned copper conductors insulated with 0.4 mm EPR or TPE and individually screened with a composite tinned-copper/nylon braid are laid up in mutual contact, enclosed by a rubber inner bedding sheath (1.5–3.5 mm), 7/0.45 mm pliable galvanised steel wire armour and a 1.8 mm heavy-duty chloroprene outer sheath.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Control conductors (6, 12, 18 or 24)Electrolytic stranded tinned copper wire, IEC 60228 Class 5 (19/0.30 mm = 1.34 mm² or 19/0.25 mm = 0.93 mm²)IEC 60228 Class 5
2Control core insulationEPR or TPE dielectric (0.4 mm nominal radial thickness, 1.5 kV AC routine test)BS 6708
3Individual composite copper / nylon screenTinned copper wire and nylon braided screen over every core, laid up in mutual contact (37.3 or 44.7 Ω/km for 3 screens in parallel)BS 6708
4Rubber inner bedding sheathRubber-based inner sheath compound (3.5 mm on Type 506; 1.8 mm on Type 512; 1.5 mm on Types 518 & 524)BS 6708
5Pliable galvanised steel wire armour7/0.45 mm galvanised steel pliable wire armour (4.50 to 5.40 Ω/km at 20 °C)BS 6708
6Heavy-duty chloroprene outer sheathHeavy-duty flame-retardant polychloroprene (chloroprene / PCP, 1.8 mm radial wall)BS 6708

BS 6708 Type 506 (6 × 1.34 mm²)

6 individually screened 1.34 mm² cores · 3.5 mm inner sheath · 22.1–23.6 mm OD (shares gland size with Type 512)

BS 6708 Type 512 (12 × 1.34 mm²)

12 individually screened 1.34 mm² cores · 1.8 mm inner sheath · 22.1–23.6 mm OD · 13 A at 25 °C

BS 6708 Type 518 (18 × 1.34 mm²)

18 individually screened 1.34 mm² cores · 1.5 mm inner sheath · 22.8–25.3 mm OD · 11 A at 25 °C

BS 6708 Type 524 (24 × 0.93 mm²)

24 individually screened 0.93 mm² cores · 1.5 mm inner sheath · 24.2–26.7 mm OD · 8 A at 25 °C

Technical data

Ratings & operating limits

Electrical

Rated voltage U0/U
320/550 V AC · 1.5 kV routine AC test voltage
Current rating (25 °C)
16 A (Type 506: 6×1.34) · 13 A (Type 512: 12×1.34) · 11 A (Type 518: 18×1.34) · 8 A (Type 524: 24×0.93)
Conductor & screen DC resistance
Conductors: 15.4 Ω/km (1.34 mm²) / 22.1 Ω/km (0.93 mm²) · 3 screens in parallel: 37.3 Ω/km (506/512/518) / 44.7 Ω/km (524)
Armour DC resistance (20 °C)
5.40 Ω/km (Types 506 & 512) · 4.76 Ω/km (Type 518) · 4.50 Ω/km (Type 524)

Thermal

Ambient temperature range
−25 °C to +85 °C
Max. conductor temperature
+90 °C continuous EPR/TPE operating temperature

Mechanical

Min. bending radius
236 mm (Types 506 & 512) · 253 mm (Type 518) · 267 mm (Type 524) (10 × max OD)
Pliable armour & sheaths
Rubber inner sheath (1.5–3.5 mm) + 7/0.45 mm pliable galvanised steel wire armour + 1.8 mm heavy-duty chloroprene outer sheath

Resistance

Crush & impact protection
7/0.45 mm pliable galvanised steel wire armour between rubber sheaths resists rockfall and crush
Flame, oil & gas environment
Heavy-duty chloroprene (PCP) jacket for deep underground mines with explosive gases and coal dust

Reference standards

Construction standard
BS 6708 (Part 5 pliable-armoured multi-core control cables)
Conductor class
IEC 60228 Class 5 flexible stranded tinned copper (19/0.30 mm or 19/0.25 mm)
Routine voltage test
1.5 kV AC routine dielectric test on all control cores

Identification

Type designation
Type 506 (6-core) · Type 512 (12-core) · Type 518 (18-core) · Type 524 (24-core)
Screen lay-up
All individual copper/nylon braided core screens laid up in mutual contact inside inner sheath

Sizes

4 standard control configurations: BS 6708 Type 506, Type 512, Type 518 & Type 524 (320/550 V)

Switch between core/cable dimensions and electrical parameters (aligned to BS 6708 core-count designations).

Dimensions & mechanical
Designation
BS 6708 Type		Cores
No.		Core CSA
mm²		Stranding
n/mm		Cond. Ø
mm		Insul.
mm		Inner wall
mm		Inner min Ø
mm		Inner max Ø
mm		Armour
n/mm		Outer wall
mm		Min. OD
mm		Max. OD
mm		Min. bend
mm		Cu mass
kg/km		Mass ≈
kg/km		Enquiry
Type 506 · 6 × 1.34 mm²61.3419/0.301.600.43.514.816.87/0.451.822.123.62361501,020
Type 512 · 12 × 1.34 mm²121.3419/0.301.600.41.814.816.87/0.451.822.123.62363001,200
Type 518 · 18 × 1.34 mm²181.3419/0.301.600.41.516.518.57/0.451.822.825.32534501,400
Type 524 · 24 × 0.93 mm²240.9319/0.251.300.41.517.919.97/0.451.824.226.72674501,600
  • BS 6708 Part 5 control cable numbers encode the core count in the last two digits: Type 506 = 6×1.34 mm², Type 512 = 12×1.34 mm², Type 518 = 18×1.34 mm², Type 524 = 24×0.93 mm².
  • Type 506 uses a thicker 3.5 mm inner sheath so its inner sheath diameter (14.8–16.8 mm) and overall OD (22.1–23.6 mm) match Type 512, allowing shared flameproof gland hardware.

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

Enter your drum core diameterMinimum for this size is about 472 mm
Minimum bending radius
236 mm
Min. drum core diameter
≈ 472 mm
Cable weight on drum
120.0 kg
Outer diameter
23.6 mm
Indicative only: based on the datasheet outer diameter and 10 × 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
1.5 kV AC dielectric withstand test1.5 kV AC routine test on all 320/550 V EPR/TPE-insulated control cores per BS 6708Every shipping drum
Conductor, screen & armour DC resistanceMax. 15.4 Ω/km (1.34 mm²) or 22.1 Ω/km (0.93 mm²) on conductors; 37.3 / 44.7 Ω/km on 3 screens in parallel; 4.50–5.40 Ω/km on armourEvery shipping drum
Sample tests
Chloroprene sheath flame & oil resistanceHeavy-duty PCP outer sheath tested for deep underground gassy/dusty mining service per BS 6708Production batch

Inspection certificate

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

Product approvals

BS 6708 Type 506 / 512 / 518 / 524CE · LVDRoHS · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · BS 6708 · TYPE 506 / 512 / 518 / 524 · 320/550V
Delivery form
Export seaworthy fumigated wooden drums
Lengths
Standard drum lengths or custom cut harness lengths
Certificate
EN 10204 3.1 factory routine test certificate with every drum
Quote response
Engineering specification and quote within 2 business hours

Technical documents

Downloads

PDFBS 6708 Type 506, 512, 518 & 524 Control Cable (320/550 V) – technical datasheet4 sizes · construction, technical data, approvalsXLSXBS 6708 Type 506 / 512 / 518 / 524 (320/550 V) spec data (Excel)All 4 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.

How do BS 6708 Types 506, 512, 518 and 524 differ?
The last two digits specify the number of individually screened control cores: Type 506 has 6 cores × 1.34 mm² (16 A at 25 °C), Type 512 has 12 cores × 1.34 mm² (13 A), Type 518 has 18 cores × 1.34 mm² (11 A), and Type 524 has 24 cores × 0.93 mm² (8 A).
Why do Type 506 (6-core) and Type 512 (12-core) have the same overall diameter (22.1–23.6 mm)?
Type 506 is extruded with a thicker 3.5 mm inner sheath (compared with 1.8 mm on Type 512) so that both cables share the exact same 14.8–16.8 mm inner sheath diameter, 7/0.45 mm pliable armour and 22.1–23.6 mm outer diameter, allowing mines to use identical flameproof cable glands for both 6-core and 12-core control cables.
Why is every control core individually braided-screened in addition to the pliable steel wire armour?
Individual tinned-copper/nylon braided screens laid in mutual contact ensure that any internal insulation fault or core-to-core crush is intercepted by an earthed metallic screen before bridging two control circuits and causing an unintended machine movement.
What is the voltage drop of Types 506, 512, 518 and 524?
For Types 506, 512 and 518 (1.34 mm² conductors), voltage drop is 34 mV/A/m (DC or single-phase) and 30 mV/A/m (3-phase). For Type 524 (0.93 mm² conductors), voltage drop is 50 mV/A/m (DC/1-phase) and 43 mV/A/m (3-phase).

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BS 6708 Type 506, 512, 518 & 524 Control Cable

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- Reel type: 
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- Exposure (outdoor, water, oil, abrasion): 
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