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Product

Mining trailing & reeling cablesSANS 1520-1 Type 61B0.64/1.1 kV · 35–150 mm²3 Screened + 3 Pilots

SANS 1520-1 Type 61B Copper-Screened Mining Cable (0.64/1.1 kV)0.64/1.1 kV 3-core triple-extruded EPR + 3-pilot trailing cable with twin CR sheaths

South African SANS 1520-1 Type 61B flexible copper-screened mining cable (0.64/1.1 kV, 35–150 mm²) with three triple-extruded RD 3 EPR power cores, 80 % fill tinned-copper braid screens, three pilot cores and twin RS 6 CR sheaths.

EMC screen
Flame-retardant
Oil-resistant
Water-resistant
Order designation
Type 61B · 3 × 95 + 3 × 16 mm²
Power size
95 mm²
Cable OD
52.3 mm
Mass ≈
5,700 kg/km
Min. bend R
430 mm
Check against my drumAll sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
0.64/1.1 kV
SANS 1520-1 LV mining
Core arrangement
3P (scr) + 3P
3 screened + 3 pilots
Size range
35–150 mm²
6 sizes · 35 to 150 mm²
Ampacity (30 °C)
160–390 A
Laid out straight
Operating temp.
−25 to +90 °C
RD 3 EPR / RS 6 CR
Min. bend radius
300–500 mm
Approx. 7.3–8 × OD

Typical values for this cable type, based on SANS 1520-1 · SANS 1411-1 & -3 — confirmed in the datasheet and quotation for your order.

Application fit

Is SANS Type 61B (0.64/1.1 kV) right for your machine?

Designed for non-reeling movable mining machinery and heavy-duty trailing feeders in hazardous areas (525 V to 1,000 V AC systems) where triple-extruded semi-conductive/EPR core stress control, 80 % fill tinned-copper phase screens and three interstitial pilot cores are required.

Trailing & towing

Suitable

Built for non-reeling trailing service feeding continuous miners, shearers, stage loaders, crushers and section transformers.

Fixed installation

Suitable

Ideal for semi-fixed hazardous-area section feeders and gate-end box interconnections requiring high earth-fault screen capacity.

Motorised monospiral reel

Not suitable

Type 61B is specified for non-reeling movable apparatus; for continuous drum reeling at 640/1,100 V, specify SANS Type 61A.

SANS Type 61A (reeling)

Immersion & wet locations

Suitable

Twin Type RS 6 polychloroprene sheaths and Type RD 3 EPR insulation resist mine water, oil, ozone and sunlight.

Typical machinesUnderground coal continuous minersLongwall shearers & stage loadersMovable underground crushersGate-end box & section feedersHazardous-area pump stationsSurface mine skid-mounted drives

Construction

Layer by layer

Three Class 5 tinned copper power conductors with triple-extruded semi-conducting conductor screen, Type RD 3 EPR insulation and strippable semi-conducting core screen are individually braided with 80 % fill tinned copper wires, laid up in right-hand lay (12 × PCD) around a semi-conductive rubber centre with three unscreened pilot cores in the outer interstices, and protected by twin Type RS 6 polychloroprene sheaths with an open 16-string nylon braid.

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Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Power conductors (3)Class 5 flexible stranded tinned annealed copper (35 to 150 mm²)SANS 1411-1
2Triple-extruded RD 3 EPRSemi-conducting rubber conductor screen + EPR Type RD 3 insulation + strippable semi-conducting core screenSANS 1411-3 Type RD 3
3Tinned copper braid screens (3)Individual tinned copper wire braid screen (0.31 mm wires, 80 % fill, 27 to 52 mm² cross-section)2.1–4.1 kA 1s earth fault
4Interstitial pilot cores (3)Three unscreened flexible tinned copper pilot cores (3 × 6 mm² or 3 × 16 mm²), one in each interstice around semi-conductive rubber centreControl & earth-continuity
5Inner sheathPolychloroprene thermosetting compound Type RS 6SANS 1411-3 Type RS 6
6Reinforcement braidOpen-weave nylon reinforcement braid (minimum 16 nylon strings)SANS 1520-1
7Outer sheathBlack polychloroprene thermosetting compound Type RS 6SANS 1520-1 · SANS 1411-3

SANS Type 61B (35–50 mm² · 3 × 6 mm² Pilots)

3 copper-screened power cores + 3 × 6 mm² unscreened interstitial pilot cores around a semi-conductive rubber centre

SANS Type 61B (70–150 mm² · 3 × 16 mm² Pilots)

3 copper-screened power cores + 3 × 16 mm² unscreened interstitial pilot cores for high-current movable mining equipment

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on SANS 1520-1 · SANS 1411-1 & -3. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
0.64/1.1 kV (640/1,100 V AC per SANS 1520-1 Type 61B)
Current rating (30 °C)
160 to 390 A laid out straight at 30 °C ambient
Triple-extruded EPR & copper screens
Semi-conducting conductor screen + Type RD 3 EPR + strippable core screen + tinned copper braid (80 % fill, 27–52 mm²)
Three interstitial pilot cores
3 × unscreened pilot cores (6 mm² on 35–50 mm²; 16 mm² on 70–150 mm²), one in each interstice

Thermal

Operating temperature range
−25 °C to +90 °C
Short-circuit & earth-fault rating (1 s)
Symmetrical phase S/C: 4.3 to 18.3 kA (1 s) · Earth-fault screen rating: 2.1 to 4.1 kA (1 s)

Mechanical

Min. bending radius
300 mm (35 mm²) to 500 mm (150 mm²) — approx. 7.3 to 8 × OD
Max. tensile load
1.6 kN (35 mm²) to 6.8 kN (150 mm²)
Twin RS 6 polychloroprene sheaths
Type RS 6 polychloroprene inner sheath + 16-string open nylon braid + black Type RS 6 polychloroprene outer sheath

Resistance

Flame, oil & water resistance
Flame retardant, oil resistant and water resistant per SANS 1411-3 Type RS 6
UV, sunlight & ozone
UV, sunlight and ozone resistant for surface and underground hazardous-area mining

Reference standards

Construction standard
SANS 1520-1 · SANS 1411-1 · SANS 1411-3
Compounds
Insulation: EPR Type RD 3 · Inner & outer sheaths: Polychloroprene Type RS 6 (SANS 1411-3)

Identification

Outer sheath colour
Black Type RS 6 polychloroprene
Type designation
SANS 1520-1 Type 61B (3 × copper-screened power + 3 × unscreened pilots, non-reeling)

Sizes

6 standard sizes from 35 mm² to 150 mm² (SANS 1520-1 Type 61B · 0.64/1.1 kV)

Switch between physical/mechanical properties and electrical/short-circuit characteristics.

Physical & mechanical properties
Designation
3P + 3 Pilots		Power
mm²		Power Ø
mm		Screen (80 %)
mm²		Pilots (3)
mm²		Pilot Ø
mm		Cable OD
mm		Mass
kg/m		Mass ≈
kg/km		Min. bend R
mm		Max. tension
kN		Enquiry
Type 61B · 3 × 35 + 3 × 6 mm²358.52763.241.03.13,1003001.6
Type 61B · 3 × 50 + 3 × 6 mm²5010.33263.242.53.63,6003402.3
Type 61B · 3 × 70 + 3 × 16 mm²7011.937165.248.04.84,8003903.2
Type 61B · 3 × 95 + 3 × 16 mm²9513.543165.252.35.75,7004304.3
Type 61B · 3 × 120 + 3 × 16 mm²12015.547165.258.07.17,1004605.4
Type 61B · 3 × 150 + 3 × 16 mm²15017.352165.263.58.58,5005006.8
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • All sizes use an 80 % fill tinned copper wire braid screen (0.31 mm wires) and a right-hand core lay ratio of 12 × pitch circle diameter (PCD).
  • Three unscreened pilot cores (one in each outer interstice) are laid up around a semi-conductive rubber centre.

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 836 mm
Minimum bending radius
418 mm
Min. drum core diameter
≈ 836 mm
Cable weight on drum
570.0 kg
Outer diameter
52.3 mm
Indicative only: based on the datasheet outer diameter and 8 × 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
AC high-voltage & partial-discharge / screen testRoutine AC withstand test on triple-extruded Type RD 3 EPR cores per SANS 1520-1Every shipping drum
Power & pilot DC resistance + screen continuityVerified on all 3 power cores, 3 tinned copper braid screens and 3 interstitial pilotsEvery shipping drum
Sample tests
Type RS 6 polychloroprene flame, oil & mechanical testsTested to SANS 1411-3 Type RS 6 and SANS 1520-1Production batch

Inspection certificate

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

Product approvals

SANS 1520-1 Type 61BCE · LVDRoHS · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · SANS 1520-1 · TYPE 61B · 0.64/1.1KV · 3 x [mm²] + 3P · RD3/RS6
Delivery form
Export seaworthy wooden drums matched to minimum bend radius (300–500 mm)
Lengths
Standard or custom cut lengths per underground section schedule
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

PDFSANS 1520-1 Type 61B Copper-Screened Mining Cable (0.64/1.1 kV) – technical datasheet6 sizes · construction, technical data, approvalsXLSXSANS Type 61B (0.64/1.1 kV) spec data (Excel)All 6 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.

Why does SANS Type 61B use triple-extruded EPR insulation at 0.64/1.1 kV?
Triple extrusion bonds an inner semi-conducting conductor screen, Type RD 3 EPR insulation and a strippable outer semi-conducting core screen in a single pass. Combined with the semi-conductive rubber centre and 80 % fill tinned copper braid screens, this provides uniform earth-leakage detection and eliminates partial voids under severe mechanical flexing.
Why are there three pilot cores in Type 61B instead of one?
Placing one unscreened pilot core (6 mm² or 16 mm²) in each of the three outer interstices creates a geometrically symmetrical cable cross-section and provides extra pilot/control circuits for earth-continuity monitoring, remote stop/start and interlock telemetry.
Is SANS Type 61B suitable for continuous drum reeling?
No. Type 61B is designed for non-reeling movable electrical apparatus and trailing service. For reeling duty at 640/1,100 V, specify SANS Type 61A (with composite nylon/copper screen and TPU outer sheath) or SANS Type 41.
What are the SANS 1411-3 compound designations RD 3 and RS 6?
Under South African standard SANS 1411-3, Type RD 3 is a 90 °C high-grade ethylene propylene rubber (EPR) insulation compound, and Type RS 6 is a heavy-duty, flame-retardant, oil- and tear-resistant polychloroprene (CR) sheathing compound.

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SANS Type 61B 0.64/1.1 kV Screened Mining Cable

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