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Product

Mining trailing & reeling cablesSANS 1520-2 Type 631.9/3.3 kV · 25–240 mm²3 Screened + 1 Pilot

SANS 1520-2 Type 63 1.9/3.3 kV Flexible Trailing Mining CableMedium-voltage 1.9/3.3 kV 3-core screened + pilot trailing & reeling cable (25–240 mm²)

South African SANS 1520-2 Type 63 medium-voltage flexible trailing and reeling cable (1.9/3.3 kV, 25–240 mm²) with three tinned-copper/nylon braid-screened EPR power cores, one unscreened pilot core and a braid-reinforced twin CR sheath.

EMC screen
Flame-retardant
Oil-resistant
Water-resistant
Order designation
Type 63 · 3 × 95 + 1 × 16 mm²
Power size
95 mm²
Nominal OD
61.0 mm
Mass ≈
7,700 kg/km
Max. tension
4.3 kN
Check against my drumAll sizes (9)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
1.9/3.3 kV
SANS 1520-2 MV mining
Core arrangement
3P (scr) + 1P
3 screened + 1 pilot
Size range
25–240 mm²
9 sizes · 25 to 240 mm²
Ampacity (30 °C)
130–520 A
Laid out straight
Operating temp.
−25 to +90 °C
EPR / twin CR rubber
Min. bend radius
6 × OD
Reeling & non-reeling

Typical values for this cable type, based on SANS 1520-2 · SANS 1411-1 & -3 — confirmed in the datasheet and quotation for your order.

Application fit

Is SANS Type 63 (1.9/3.3 kV) right for your machine?

Engineered for 3.3 kV AC underground continuous miners, longwall shearers, armored face conveyors (AFC), stage loaders and open-cast shovels/drills where SANS 1520-2 requires individual core earth-fault screening, pilot continuity monitoring and 6 × OD reeling flexibility.

Trailing & towing

Suitable

Primary 1.9/3.3 kV trailing cable for high-output continuous miners, longwall shearers and mobile mining machinery.

Motorised monospiral reel

Suitable

Rated for reeling and non-reeling operation with a 6 × OD minimum bend radius and 1.1 to 10.8 kN tensile rating.

Cylindrical / multi-layer drum

Suitable

Open 16-string nylon reinforcement braid between inner and outer CR sheaths prevents sheath twist on monospiral and wide drums.

Immersion & wet locations

Suitable

EPR core insulation and twin polychloroprene (CR) sheaths withstand wet underground headings and oil-contaminated sumps.

Free-hanging vertical run

Not suitable

Flexible unarmoured trailing construction — do not suspend in deep vertical mine shafts without support.

Use BS 6708 Type 20/21 Armoured
Typical machines3.3 kV continuous miners & boltersLongwall shearers & AFC drivesUnderground 3.3 kV section feedersOpen-cast blast-hole drills & shovels3.3 kV dewatering & slurry pumpsMobile in-pit crushing plants

Construction

Layer by layer

Three Class 5 tinned copper power conductors insulated with 1.9/3.3 kV EPR and individually screened with a composite tinned-copper/nylon braid (31 to 64 mm²) are laid up with one unscreened EPR-insulated pilot core (10 to 25 mm²) around a central rubber filler, enclosed by a CR inner sheath, a 16-string open nylon reinforcement braid and a heavy-duty black CR outer sheath.

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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 (25 to 240 mm²)SANS 1411-1
2Power core insulationEthylene propylene rubber (EPR) thermosetting compound (1.9/3.3 kV wall)SANS 1411-3
3Individual phase screens (3)Composite tinned copper (0.31 mm wires) and nylon textile braid over each power core (31 to 64 mm²)1.6–4.1 kA 1s earth fault
4Pilot core (1)Unscreened Class 5 tinned copper pilot core insulated with EPR (10, 16 or 25 mm²) around rubber centreEarth-continuity interlock
5Inner sheathPolychloroprene (CR) rubber inner bedding sheathSANS 1411-3
6Reinforcement braidOpen-weave nylon reinforcement braid (minimum 16 strings)SANS 1520-2
7Outer sheathHeavy-duty black polychloroprene (CR) rubber outer sheathSANS 1520-2 · SANS 1411-3

SANS Type 63 (25–50 mm² · 10 mm² Pilot)

3 screened 1.9/3.3 kV power cores + 1 × 10 mm² unscreened pilot core for drills, pumps and auxiliary 3.3 kV drives

SANS Type 63 (70–240 mm² · 16 or 25 mm² Pilot)

3 screened 1.9/3.3 kV power cores + 1 × 16 mm² (70–120 mm²) or 25 mm² (150–240 mm²) pilot for continuous miners and shearers

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on SANS 1520-2 · SANS 1411-1 & -3. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
1.9/3.3 kV AC (SANS 1520-2 Type 63 medium-voltage trailing & reeling cable)
Current rating (30 °C)
130 to 520 A laid out straight at 30 °C ambient
Individual phase screens
Composite tinned copper / nylon braid screen over each EPR power core (0.31 mm wires, 31 to 64 mm²)
Pilot core
1 × unscreened EPR-insulated pilot core (10, 16 or 25 mm²) laid up with power cores

Thermal

Operating temperature range
−25 °C to +90 °C
Short-circuit & earth-fault rating (1 s)
Symmetrical phase S/C: 3.1 to 29.0 kA (1 s) · Earth-fault screen rating: 1.6 to 4.1 kA (1 s)

Mechanical

Min. bending radius
6 × OD (reeling and non-reeling service)
Max. tensile load
1.1 kN (25 mm²) to 10.8 kN (240 mm²)
Twin CR sheaths & reinforcement
CR polychloroprene inner sheath + 16-string open nylon braid + black CR polychloroprene outer sheath

Resistance

Flame, oil & abrasion
Heavy-duty polychloroprene (CR) outer sheath resists flame, mineral oil, rock cuts and coal-face drag
Water, ozone & UV
EPR insulation and twin CR sheaths withstand wet underground headings and open-cast UV exposure

Reference standards

Construction standard
SANS 1520-2 · SANS 1411-1 · SANS 1411-3
Conductor class
Class 5 flexible stranded tinned annealed copper per SANS 1411-1

Identification

Outer sheath colour
Black polychloroprene (CR)
Type designation
SANS 1520-2 Type 63 (3 × screened power + 1 × unscreened pilot, 1.9/3.3 kV)

Sizes

9 standard sizes from 25 mm² to 240 mm² (SANS 1520-2 Type 63 · 1.9/3.3 kV)

Switch between dimensional/mechanical data and electrical/short-circuit characteristics.

Dimensions & mechanical
Designation
3P + 1 Pilot		Power
mm²		Power Ø
mm		Screen area
mm²		Pilot
mm²		Pilot Ø
mm		Max. tension
kN		Nominal OD
mm		Mass
kg/100m		Mass ≈
kg/km		Enquiry
Type 63 · 3 × 25 + 1 × 10 mm²256.831104.21.144.03603,600
Type 63 · 3 × 35 + 1 × 10 mm²358.533104.21.648.04204,200
Type 63 · 3 × 50 + 1 × 10 mm²5010.338105.32.350.55105,100
Type 63 · 3 × 70 + 1 × 16 mm²7011.942165.33.256.06406,400
Type 63 · 3 × 95 + 1 × 16 mm²9513.547165.34.361.07707,700
Type 63 · 3 × 120 + 1 × 16 mm²12015.550165.35.463.08508,500
Type 63 · 3 × 150 + 1 × 25 mm²15017.355256.86.866.01,05010,500
Type 63 · 3 × 185 + 1 × 25 mm²18520.260256.88.372.01,14011,400
Type 63 · 3 × 240 + 1 × 25 mm²24022.964256.810.878.01,40014,000
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Each power core is individually screened with a composite 0.31 mm tinned copper / nylon braid (31 to 64 mm² total metallic screen area).
  • Cable mass is shown in both kg/100 m (South African catalogue convention) and kg/km.

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 732 mm
Minimum bending radius
366 mm
Min. drum core diameter
≈ 732 mm
Cable weight on drum
770.0 kg
Outer diameter
61.0 mm
Indicative only: based on the datasheet outer diameter and 6 × 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
Medium-voltage AC withstand & partial-discharge testRoutine AC dielectric withstand test on 1.9/3.3 kV EPR power cores per SANS 1520-2Every shipping drum
Power, screen & pilot DC resistanceVerified on all 3 power conductors, 3 individual copper/nylon screens and pilot coreEvery shipping drum
Sample tests
CR sheath flame, oil & mechanical testPolychloroprene inner and outer sheaths tested to SANS 1411-3 and SANS 1520-2Production batch

Inspection certificate

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

Product approvals

SANS 1520-2 Type 63CE · LVDRoHS · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · SANS 1520-2 · TYPE 63 · 1.9/3.3KV · 3 x [mm²] + P · EPR/CR
Delivery form
Export seaworthy wooden drums matched to 6 × OD minimum bend radius
Lengths
Standard or custom cut lengths per 3.3 kV mining 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 1520-2 Type 63 1.9/3.3 kV Flexible Trailing Mining Cable – technical datasheet9 sizes · construction, technical data, approvalsXLSXSANS Type 63 (1.9/3.3 kV) spec data (Excel)All 9 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 is SANS Type 63 the standard cable for 3.3 kV continuous miners and longwall faces?
As coal-face cutter motors scaled up from 1,000 V to 3.3 kV to reduce current and voltage drop, SANS 1520-2 Type 63 retained the compact 4-core geometry (3 composite-screened power cores + 1 unscreened pilot core) and 6 × OD minimum bending radius needed to fit existing Bretby cable handlers and gate-end couplers.
How does SANS Type 63 differ from SANS Type 66 (3.8/6.6 kV)?
Type 63 (1.9/3.3 kV) uses a 4-core lay-up (3 screened power cores + 1 unscreened pilot core around a rubber centre), whereas Type 66 (3.8/6.6 kV) lays up the 3 screened power cores with 3 interstitial pilot cores (or 2 pilots + 1 bare tinned ECC in Type 66-ECC).
What is the earth-fault current rating of the composite screens on Type 63?
The three composite tinned-copper/nylon braid screens (31 to 64 mm² combined metallic area) provide a 1-second earth-fault rating from 1.6 kA on 25 mm² up to 4.1 kA on 95–240 mm², matching restricted-neutral 3.3 kV mining transformer protection settings.
Can SANS Type 63 be used for both reeling and non-reeling service?
Yes. Its Class 5 tinned copper conductors, composite nylon/copper phase screens and 16-string open nylon reinforcement braid between twin CR sheaths are rated for both drum reeling and trailing service.

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SANS Type 63 1.9/3.3 kV Flexible Trailing Mining Cable

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Reel & motion:
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- Exposure (outdoor, water, oil, abrasion): 
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