PROTOLON (SB-SAM)(N)TSCGEWOEU(N)TSCGECEWOEUMV trailing3.6/6–18/30 kV source rangeOpen-cast mining
PROTOLON (SB-SAM) — Complete Engineering Guide to the Medium-Voltage Trailing Cable Series
A source-controlled technical reference covering the current optimized-wall-thickness cable, the archival high-voltage extension, the copper-core-screen version, detailed material architecture, mechanical boundaries, electrical data, document conflicts and field selection.
Current core range
3.6/6–12/20 kV
2019/2025 matrix
Archival extended range
14/25–18/30 kV
2016 matrix
Current tensile rule
20 N/mm²
table-verified on 3 phase cores
Torsion
±100 / ±25°/m
unshielded / screened
Contents
- Scope and source hierarchy
- Mining application
- Standard construction
- Copper-core-screen construction
- Layer-by-layer materials
- Electrical and thermal ratings
- Mechanical operating envelope
- Current 36-row matrix
- Archival high-voltage extension
- Screened 54-row matrix
- Document conflicts
- Engineering calculations
- Selection workflow
- Installation and termination
- FMEA
- Source map
1. Scope and source hierarchy
CURRENT
2025 / 2019 core series
The primary matrix contains 36 constructions from 3.6/6 to 12/20 kV. The 2025 brochure supplies the newest construction wording; the 2019 catalogue supplies selected Part and MLFB identifiers.
ARCHIVAL
2016 extended voltage range
The 2016 catalogue includes 14/25 and 18/30 kV unshielded cables and a complete screened range through 18/30 kV. These rows are useful for legacy assets, not proof of current availability.
INFERENCE
Force-rule reconciliation
Where a 2016 table force equals 15 × 3S despite a 20 N/mm² text statement, the calculated 15 N/mm² basis is shown explicitly and treated as a document conflict.
Contractual rule: the approved data sheet and production drawing for the exact order override every catalogue comparison in this article.
2. Application: heavy open-cast trailing duty
Primary use: power supply or connection of large mobile material-handling machines, including excavators, shovels, stackers, reclaimers, dumpers and mobile crushers in open-cast mines where abrasion and chafing are expected during trailing.
Do not generalize to high-speed reeling: SB-SAM is primarily a trailing cable. Any reel, festoon, multiple-plane or travel-speed claim must be verified against the exact installation and product document.
3. Detailed standard cross-section — (N)TSCGEWOEU
Core architecture: three screened-by-semiconductive-layer phase cores, a two-part split earth conductor and one yellow pilot are laid with a tear-resistant reinforcement system inside bonded heavy-duty sheaths.
4. Detailed copper-core-screen cross-section — (N)TSCGECEWOEU
Functional change: the metallic concentric screen is applied over each main core. It increases diameter and mass, reduces the permitted torsional angle in the archival product description, and changes jointing, earthing and fault-current design.
5. Layer-by-layer construction
| Layer / element | Current 2025 wording | 2016/2019 wording | Engineering function |
|---|---|---|---|
| Phase conductor | Tinned, finely stranded copper, class 5 | Bare / untinned finely stranded copper, class 5 | Flexible phase-current path; conductor finish is version-dependent. |
| Earth conductor | Tinned, very finely stranded copper, class FS, with semiconductive rubber | Bare / untinned class FS; split into two parts | Protective earth continuity in two interstices. |
| Inner field-control layer | Semiconductive EPR | Black semiconductive rubber compound | Controls electric stress at the conductor/insulation interface. |
| Insulation | PROTOLON EPR, special compound 3GI3 | PROTOLON EPR, better than / minimum 3GI3 | Medium-voltage dielectric and flexible thermal system. |
| Outer field-control layer | Easy-strip semiconductive NBR | Cold-strippable black semiconductive rubber | Controls the insulation-screen interface and supports joint preparation. |
| Core screen | Special metallic-screen design available | Concentric metallic screen over every main core in (N)TSCGECEWOEU | Core shielding, earth/fault-current path and field containment. |
| Pilot conductor | 10 mm² pilot in published matrices | EPR-insulated class FS copper, yellow | Ground-check, interlock or control function as defined by the system. |
| Reinforcement | Tear-resistant reinforcing tape plus polyester braiding | Extremely tear-resistant tape preventing sheath movement | Stabilizes the assembly under dragging, bending and torsion. |
| Inner sheath | PCP/chloroprene heavy-duty system, compound 5GM5 | Bonded inner part of complete sheath | Bedding, mechanical support and environmental barrier. |
| Outer sheath | PCP/chloroprene, special compound >5GM5 | 5GM5, abrasion- and tear-resistant; bonded to inner sheath | Primary abrasion, chafing, ozone, UV and moisture protection. |
6. Electrical, thermal and environmental ratings
Current rated voltages
3.6/6, 6/10, 8.7/15 and 12/20 kV in the 2019/2025 core matrix.
Archival rated voltages
14/25 and 18/30 kV appear in the 2016 unshielded and screened catalogues.
AC test voltage
11, 17, 24 and 29 kV for the current four voltage classes; archival 14/25 and 18/30 documents list 36 and 43 kV.
Conductor temperature
90 °C continuous; 250 °C short circuit.
Ambient range
Fixed: −40…+80 °C. Fully flexible: −30…+60 °C in the detailed 2019/2025 product sheet.
Resistance
Flame performance to EN/IEC 60332-1-2, oil resistance to IEC 60811-404, and resistance to ozone, UV and moisture.
Water boundary: water resistance is referenced to HD 22.16 / EN 50525-2-21, but no numerical immersion depth is published for SB-SAM. Do not infer a depth rating.
7. Mechanical operating envelope
Current unshielded
20 N/mm² static tensile rule, ±100°/m torsion, 6D fixed and 10D flexible bending rule.
Archival screened
±25°/m torsion. The 2016 table force values equal 15 N/mm² on the three phase conductors even though its text says 20 N/mm².
S-bends
Avoid tight reverse bends. A project-specific path analysis is required because the current product sheet provides 6D/10D rules but no universal operating S-bend distance.
Trailing pull
Calculate steady pull, startup peaks, ground friction, slope, cable self-weight and localized snag loads separately.
8. Current core matrix — 36 rows
The following table uses the current 2019/2025 dimensions and electrical data. Part and MLFB identifiers are included only where the 2019 catalogue publishes them.
Current core matrix · 3.6/6 kV · 9 rows
| Construction | Part number | MLFB | Conductor Ø | Dmin | Dmax | kg/km | Fmax | R20 | C | L | A | Isc 1 s | F/(3S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×25+2×25/2+1x10ST | 20203078 | 5DK3246 | 6.5 | 35.5 | 42.5 | 2,670 | 1,500 | 0.78 | 0.35 | 0.32 | 131 | 3.58 | 20 N/mm² |
| 3×35+2×25/2+1x10ST | 20181804 | 5DK3249 | 7.6 | 41.9 | 44.9 | 3,020 | 2,100 | 0.554 | 0.39 | 0.31 | 162 | 5.01 | 20 N/mm² |
| 3×50+2×25/2+1x10ST | 20183832 | 5DK3*** | 9.1 | 42.8 | 45.8 | 3,510 | 3,000 | 0.386 | 0.45 | 0.29 | 202 | 7.15 | 20 N/mm² |
| 3×70+2×35/2+1x10ST | not published | — | 10.9 | 46.5 | 49.5 | 4,300 | 4,200 | 0.272 | 0.52 | 0.28 | 250 | 10.01 | 20 N/mm² |
| 3×95+2×50/2+1x10ST | not published | — | 12.7 | 52.9 | 56.9 | 5,600 | 5,700 | 0.206 | 0.58 | 0.27 | 301 | 13.59 | 20 N/mm² |
| 3×120+2×70/2+1x10ST | not published | — | 14.4 | 56.5 | 60.5 | 6,750 | 7,200 | 0.161 | 0.65 | 0.26 | 352 | 17.16 | 20 N/mm² |
| 3×150+2×70/2+1x10ST | not published | — | 16.2 | 63 | 67 | 8,100 | 9,000 | 0.129 | 0.71 | 0.25 | 404 | 21.45 | 20 N/mm² |
| 3×185+2×95/2+1x10ST | not published | — | 17.8 | 66.4 | 70.4 | 9,400 | 11,100 | 0.106 | 0.77 | 0.25 | 461 | 26.46 | 20 N/mm² |
| 3×240+2×120/2+1x10ST | not published | — | 20.6 | 72.3 | 76.3 | 11,700 | 14,400 | 0.08 | 0.88 | 0.24 | 540 | 34.32 | 20 N/mm² |
Current core matrix · 6/10 kV · 9 rows
| Construction | Part number | MLFB | Conductor Ø | Dmin | Dmax | kg/km | Fmax | R20 | C | L | A | Isc 1 s | F/(3S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×25+2×25/2+1x10ST | not published | — | 6.5 | 40.8 | 43.8 | 2,700 | 1,500 | 0.78 | 0.3 | 0.34 | 131 | 3.58 | 20 N/mm² |
| 3×35+2×25/2+1x10ST | 20036708 | 5DK4548 | 7.6 | 41.1 | 44.1 | 3,030 | 2,100 | 0.554 | 0.33 | 0.32 | 162 | 5.01 | 20 N/mm² |
| 3×50+2×25/2+1x10ST | not published | — | 9.1 | 45.3 | 48.3 | 3,600 | 3,000 | 0.386 | 0.38 | 0.31 | 202 | 7.15 | 20 N/mm² |
| 3×70+2×35/2+1x10ST | 20079290 | 5DK4459 | 10.9 | 47.7 | 50.7 | 4,540 | 4,200 | 0.272 | 0.43 | 0.29 | 250 | 10.01 | 20 N/mm² |
| 3×95+2×50/2+1x10ST | not published | — | 12.7 | 54.2 | 58.2 | 5,700 | 5,700 | 0.206 | 0.48 | 0.28 | 301 | 13.59 | 20 N/mm² |
| 3×120+2×70/2+1x10ST | 20006948 | 5DK4243 | 14.4 | 57.7 | 61.7 | 7,130 | 7,200 | 0.161 | 0.54 | 0.27 | 352 | 17.16 | 20 N/mm² |
| 3×150+2×70/2+1x10ST | not published | — | 16.2 | 64.2 | 68.2 | 8,300 | 9,000 | 0.129 | 0.59 | 0.26 | 404 | 21.45 | 20 N/mm² |
| 3×185+2×95/2+1x10ST | not published | — | 17.8 | 67.6 | 71.6 | 9,600 | 11,100 | 0.106 | 0.64 | 0.26 | 461 | 26.46 | 20 N/mm² |
| 3×240+2×120/2+1x10ST | 20008103 | 5DK4246 | 20.6 | 72.3 | 76.3 | 12,060 | 14,400 | 0.08 | 0.72 | 0.25 | 540 | 34.32 | 20 N/mm² |
Current core matrix · 8.7/15 kV · 9 rows
| Construction | Part number | MLFB | Conductor Ø | Dmin | Dmax | kg/km | Fmax | R20 | C | L | A | Isc 1 s | F/(3S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×25+2×25/2+1x10ST | not published | — | 6.5 | 41.9 | 44.9 | 2,600 | 1,500 | 0.78 | 0.22 | 0.37 | 139 | 3.58 | 20 N/mm² |
| 3×35+2×25/2+1x10ST | 20069641 | 5DK5412 | 7.6 | 45.5 | 48.5 | 3,440 | 2,100 | 0.554 | 0.25 | 0.35 | 172 | 5.01 | 20 N/mm² |
| 3×50+2×25/2+1x10ST | not published | — | 9.1 | 47.4 | 50.4 | 3,700 | 3,000 | 0.386 | 0.28 | 0.33 | 215 | 7.15 | 20 N/mm² |
| 3×70+2×35/2+1x10ST | 20069640 | 5DK5414 | 10.9 | 53.7 | 57.7 | 5,380 | 4,200 | 0.272 | 0.32 | 0.31 | 265 | 10.01 | 20 N/mm² |
| 3×95+2×50/2+1x10ST | not published | — | 12.7 | 57.6 | 61.6 | 6,150 | 5,700 | 0.206 | 0.35 | 0.3 | 319 | 13.59 | 20 N/mm² |
| 3×120+2×70/2+1x10ST | 20088941 | 5DK5416 | 14.4 | 63 | 67 | 7,840 | 7,200 | 0.161 | 0.39 | 0.29 | 371 | 17.16 | 20 N/mm² |
| 3×150+2×70/2+1x10ST | 20088942 | 5DK5417 | 16.2 | 66.8 | 70.8 | 8,990 | 9,000 | 0.129 | 0.43 | 0.28 | 428 | 21.45 | 20 N/mm² |
| 3×185+2×95/2+1x10ST | not published | — | 17.8 | 71 | 75 | 10,100 | 11,100 | 0.106 | 0.46 | 0.27 | 488 | 26.46 | 20 N/mm² |
| 3×240+2×120/2+1x10ST | 20216531 | 5DK5*** | 20.6 | 78.3 | 83.3 | 12,800 | 14,400 | 0.08 | 0.52 | 0.27 | 574 | 34.32 | 20 N/mm² |
Current core matrix · 12/20 kV · 9 rows
| Construction | Part number | MLFB | Conductor Ø | Dmin | Dmax | kg/km | Fmax | R20 | C | L | A | Isc 1 s | F/(3S) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3×25+2×25/2+1x10ST | not published | — | 6.5 | 44.9 | 47.9 | 3,000 | 1,500 | 0.78 | 0.22 | 0.37 | 139 | 3.58 | 20 N/mm² |
| 3×35+2×25/2+1x10ST | 20203799 | 5DK6*** | 7.6 | 47.2 | 50.2 | 3,500 | 2,100 | 0.554 | 0.24 | 0.35 | 172 | 5.01 | 20 N/mm² |
| 3×50+2×25/2+1x10ST | not published | — | 9.1 | 51.7 | 55.7 | 4,350 | 3,000 | 0.386 | 0.27 | 0.33 | 215 | 7.15 | 20 N/mm² |
| 3×70+2×35/2+1x10ST | not published | — | 10.9 | 55.5 | 59.5 | 5,400 | 4,200 | 0.272 | 0.31 | 0.32 | 265 | 10.01 | 20 N/mm² |
| 3×95+2×50/2+1x10ST | not published | — | 12.7 | 60.5 | 64.5 | 6,500 | 5,700 | 0.206 | 0.35 | 0.3 | 319 | 13.59 | 20 N/mm² |
| 3×120+2×70/2+1x10ST | not published | — | 14.4 | 65.9 | 69.9 | 8,000 | 7,200 | 0.161 | 0.38 | 0.29 | 371 | 17.16 | 20 N/mm² |
| 3×150+2×70/2+1x10ST | not published | — | 16.2 | 70.6 | 74.6 | 9,200 | 9,000 | 0.129 | 0.42 | 0.28 | 428 | 21.45 | 20 N/mm² |
| 3×185+2×95/2+1x10ST | not published | — | 17.8 | 75.8 | 79.8 | 10,850 | 11,100 | 0.106 | 0.45 | 0.28 | 488 | 26.46 | 20 N/mm² |
| 3×240+2×120/2+1x10ST | not published | — | 20.6 | 81.2 | 86.2 | 13,300 | 14,400 | 0.08 | 0.51 | 0.27 | 574 | 34.32 | 20 N/mm² |
9. Archival unshielded high-voltage extension — 18 rows
These 14/25 and 18/30 kV rows were published in 2016. They are retained for legacy-asset engineering and dimensional comparison; current manufacture must be confirmed.
Archival unshielded high-voltage extension (2016) · 18 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14/25 | 3×25+2×25/2+1x10ST | 6.5 | 48.2 | 52.2 | 3,500 | 1,125 | 15 N/mm² | 0.78 | 0.19 | 0.39 | 139 | 3.58 |
| 14/25 | 3×35+2×25/2+1x10ST | 7.6 | 52.3 | 56.3 | 4,100 | 1,575 | 15 N/mm² | 0.554 | 0.21 | 0.37 | 172 | 5.01 |
| 14/25 | 3×50+2×25/2+1x10ST | 9.1 | 55.5 | 59.5 | 4,800 | 2,250 | 15 N/mm² | 0.386 | 0.23 | 0.35 | 215 | 7.15 |
| 14/25 | 3×70+2×35/2+1x10ST | 10.9 | 59.3 | 63.3 | 5,800 | 3,150 | 15 N/mm² | 0.272 | 0.26 | 0.33 | 265 | 10.01 |
| 14/25 | 3×95+2×50/2+1x10ST | 12.7 | 66.2 | 70.2 | 7,300 | 4,275 | 15 N/mm² | 0.206 | 0.29 | 0.32 | 319 | 13.6 |
| 14/25 | 3×120+2×70/2+1x10ST | 14.4 | 69.8 | 73.8 | 8,600 | 5,400 | 15 N/mm² | 0.161 | 0.32 | 0.31 | 371 | 17.16 |
| 14/25 | 3×150+2×70/2+1x10ST | 16.2 | 76.2 | 80.2 | 10,100 | 6,750 | 15 N/mm² | 0.129 | 0.35 | 0.3 | 428 | 21.45 |
| 14/25 | 3×185+2×95/2+1x10ST | 17.8 | 79.1 | 84.1 | 11,600 | 8,352 | 15 N/mm² | 0.106 | 0.38 | 0.29 | 488 | 26.46 |
| 14/25 | 3×240+2×120/2+1x10ST | 20.6 | 86.8 | 91.8 | 14,200 | 10,800 | 15 N/mm² | 0.08 | 0.42 | 0.28 | 574 | 34.32 |
| 18/30 | 3×25+2×25/2+1x10ST | 6.5 | 53.3 | 57.3 | 4,000 | 1,125 | 15 N/mm² | 0.78 | 0.17 | 0.41 | 139 | 3.58 |
| 18/30 | 3×35+2×25/2+1x10ST | 7.6 | 55.7 | 59.7 | 4,600 | 1,575 | 15 N/mm² | 0.554 | 0.18 | 0.39 | 172 | 5.01 |
| 18/30 | 3×50+2×25/2+1x10ST | 9.1 | 58.9 | 62.9 | 5,300 | 2,250 | 15 N/mm² | 0.386 | 0.2 | 0.37 | 215 | 7.15 |
| 18/30 | 3×70+2×35/2+1x10ST | 10.9 | 64.5 | 68.5 | 6,200 | 3,150 | 15 N/mm² | 0.272 | 0.23 | 0.35 | 265 | 10.01 |
| 18/30 | 3×95+2×50/2+1x10ST | 12.7 | 69.5 | 73.5 | 8,000 | 4,275 | 15 N/mm² | 0.206 | 0.25 | 0.33 | 319 | 13.6 |
| 18/30 | 3×120+2×70/2+1x10ST | 14.4 | 74.9 | 78.9 | 9,200 | 5,400 | 15 N/mm² | 0.161 | 0.28 | 0.32 | 371 | 17.16 |
| 18/30 | 3×150+2×70/2+1x10ST | 16.2 | 79.1 | 84.1 | 10,900 | 6,750 | 15 N/mm² | 0.129 | 0.3 | 0.31 | 428 | 21.45 |
| 18/30 | 3×185+2×95/2+1x10ST | 17.8 | 82.5 | 87.5 | 12,200 | 8,352 | 15 N/mm² | 0.106 | 0.32 | 0.3 | 488 | 26.46 |
| 18/30 | 3×240+2×120/2+1x10ST | 20.6 | 90.2 | 95.2 | 15,000 | 10,800 | 15 N/mm² | 0.08 | 0.36 | 0.29 | 574 | 34.32 |
10. Archival copper-core-screen matrix — 54 rows
The screened matrix covers six voltage classes and nine conductor sizes. The published table force values are shown without silent correction.
Archival copper-core-screen matrix · 3.6/6 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.6/6 | 3×25+2×25/2+1x10ST | 6.5 | 41.6 | 44.6 | 2,860 | 1,125 | 15 N/mm² | 0.78 | 0.37 | 0.35 | 131 | 3.58 |
| 3.6/6 | 3×35+2×25/2+1x10ST | 7.6 | 44 | 47 | 3,290 | 1,575 | 15 N/mm² | 0.554 | 0.43 | 0.32 | 162 | 5.01 |
| 3.6/6 | 3×50+2×25/2+1x10ST | 9.1 | 47.1 | 50.1 | 3,950 | 2,250 | 15 N/mm² | 0.386 | 0.49 | 0.28 | 202 | 7.15 |
| 3.6/6 | 3×70+2×35/2+1x10ST | 10.9 | 52.3 | 56.3 | 5,100 | 3,150 | 15 N/mm² | 0.272 | 0.55 | 0.27 | 250 | 10.01 |
| 3.6/6 | 3×95+2×50/2+1x10ST | 12.7 | 56.1 | 60.1 | 6,130 | 4,275 | 15 N/mm² | 0.206 | 0.63 | 0.26 | 301 | 13.6 |
| 3.6/6 | 3×120+2×70/2+1x10ST | 14.4 | 59.7 | 63.7 | 7,360 | 5,400 | 15 N/mm² | 0.161 | 0.7 | 0.25 | 352 | 17.16 |
| 3.6/6 | 3×150+2×70/2+1x10ST | 16.2 | 66.3 | 70.3 | 8,770 | 6,750 | 15 N/mm² | 0.129 | 0.76 | 0.25 | 404 | 21.45 |
| 3.6/6 | 3×185+2×95/2+1x10ST | 17.8 | 69.7 | 73.7 | 10,140 | 8,352 | 15 N/mm² | 0.106 | 0.82 | 0.24 | 462 | 26.46 |
| 3.6/6 | 3×240+2×120/2+1x10ST | 20.6 | 77.4 | 81.4 | 12,790 | 10,800 | 15 N/mm² | 0.08 | 0.93 | 0.24 | 540 | 34.32 |
Archival copper-core-screen matrix · 6/10 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6/10 | 3×25+2×25/2+1x10ST | 6.5 | 42.6 | 45.6 | 2,970 | 1,125 | 15 N/mm² | 0.78 | 0.33 | 0.35 | 131 | 3.58 |
| 6/10 | 3×35+2×25/2+1x10ST | 7.6 | 45.5 | 48.5 | 3,460 | 1,575 | 15 N/mm² | 0.554 | 0.38 | 0.32 | 162 | 5.01 |
| 6/10 | 3×50+2×25/2+1x10ST | 9.1 | 48.4 | 51.4 | 4,080 | 2,250 | 15 N/mm² | 0.386 | 0.43 | 0.28 | 202 | 7.15 |
| 6/10 | 3×70+2×35/2+1x10ST | 10.9 | 53.5 | 57.5 | 5,240 | 3,150 | 15 N/mm² | 0.272 | 0.49 | 0.27 | 250 | 10.01 |
| 6/10 | 3×95+2×50/2+1x10ST | 12.7 | 57.4 | 61.4 | 6,320 | 4,275 | 15 N/mm² | 0.206 | 0.56 | 0.26 | 301 | 13.6 |
| 6/10 | 3×120+2×70/2+1x10ST | 14.4 | 62.8 | 66.8 | 7,770 | 5,400 | 15 N/mm² | 0.161 | 0.62 | 0.25 | 352 | 17.16 |
| 6/10 | 3×150+2×70/2+1x10ST | 16.2 | 67.6 | 71.6 | 8,990 | 6,750 | 15 N/mm² | 0.129 | 0.67 | 0.25 | 404 | 21.45 |
| 6/10 | 3×185+2×95/2+1x10ST | 17.8 | 71 | 75 | 10,330 | 8,352 | 15 N/mm² | 0.106 | 0.73 | 0.24 | 462 | 26.46 |
| 6/10 | 3×240+2×120/2+1x10ST | 20.6 | 78.7 | 82.7 | 12,990 | 10,800 | 15 N/mm² | 0.08 | 0.82 | 0.24 | 540 | 34.32 |
Archival copper-core-screen matrix · 8.7/15 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8.7/15 | 3×25+2×25/2+1x10ST | 6.5 | 46.3 | 49.3 | 3,330 | 1,125 | 15 N/mm² | 0.78 | 0.26 | 0.36 | 131 | 3.58 |
| 8.7/15 | 3×35+2×25/2+1x10ST | 7.6 | 48.1 | 52.1 | 3,770 | 1,575 | 15 N/mm² | 0.554 | 0.31 | 0.33 | 162 | 5.01 |
| 8.7/15 | 3×50+2×25/2+1x10ST | 9.1 | 53.1 | 57.1 | 4,690 | 2,250 | 15 N/mm² | 0.386 | 0.35 | 0.31 | 202 | 7.15 |
| 8.7/15 | 3×70+2×35/2+1x10ST | 10.9 | 57 | 61 | 5,640 | 3,150 | 15 N/mm² | 0.272 | 0.38 | 0.3 | 250 | 10.01 |
| 8.7/15 | 3×95+2×50/2+1x10ST | 12.7 | 60.8 | 64.8 | 6,750 | 4,275 | 15 N/mm² | 0.206 | 0.43 | 0.28 | 301 | 13.6 |
| 8.7/15 | 3×120+2×70/2+1x10ST | 14.4 | 66.1 | 70.1 | 8,220 | 5,400 | 15 N/mm² | 0.161 | 0.48 | 0.27 | 352 | 17.16 |
| 8.7/15 | 3×150+2×70/2+1x10ST | 16.2 | 71 | 75 | 9,490 | 6,750 | 15 N/mm² | 0.129 | 0.53 | 0.27 | 404 | 21.45 |
| 8.7/15 | 3×185+2×95/2+1x10ST | 17.8 | 76.1 | 80.1 | 11,180 | 8,352 | 15 N/mm² | 0.106 | 0.57 | 0.26 | 462 | 26.46 |
| 8.7/15 | 3×240+2×120/2+1x10ST | 20.6 | 82.1 | 86.1 | 13,560 | 10,800 | 15 N/mm² | 0.08 | 0.64 | 0.25 | 540 | 34.32 |
Archival copper-core-screen matrix · 12/20 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12/20 | 3×25+2×25/2+1x10ST | 6.5 | 48.8 | 52.8 | 3,620 | 1,125 | 15 N/mm² | 0.78 | 0.23 | 0.36 | 131 | 3.58 |
| 12/20 | 3×35+2×25/2+1x10ST | 7.6 | 52.9 | 56.9 | 4,350 | 1,575 | 15 N/mm² | 0.554 | 0.26 | 0.34 | 162 | 5.01 |
| 12/20 | 3×50+2×25/2+1x10ST | 9.1 | 56.1 | 60.1 | 5,020 | 2,250 | 15 N/mm² | 0.386 | 0.3 | 0.32 | 202 | 7.15 |
| 12/20 | 3×70+2×35/2+1x10ST | 10.9 | 59.9 | 63.9 | 6,040 | 3,150 | 15 N/mm² | 0.272 | 0.33 | 0.31 | 250 | 10.01 |
| 12/20 | 3×95+2×50/2+1x10ST | 12.7 | 65.5 | 69.5 | 7,390 | 4,275 | 15 N/mm² | 0.206 | 0.37 | 0.3 | 301 | 13.6 |
| 12/20 | 3×120+2×70/2+1x10ST | 14.4 | 69 | 73 | 8,680 | 5,400 | 15 N/mm² | 0.161 | 0.41 | 0.29 | 352 | 17.16 |
| 12/20 | 3×150+2×70/2+1x10ST | 16.2 | 75.7 | 79.7 | 10,280 | 6,750 | 15 N/mm² | 0.129 | 0.44 | 0.28 | 404 | 21.45 |
| 12/20 | 3×185+2×95/2+1x10ST | 17.8 | 79.2 | 83.2 | 11,670 | 8,352 | 15 N/mm² | 0.106 | 0.48 | 0.27 | 462 | 26.46 |
| 12/20 | 3×240+2×120/2+1x10ST | 20.6 | 86.4 | 91.4 | 14,560 | 10,800 | 15 N/mm² | 0.08 | 0.54 | 0.26 | 540 | 34.32 |
Archival copper-core-screen matrix · 14/25 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14/25 | 3×25+2×25/2+1x10ST | 6.5 | 54.4 | 58.4 | 4,290 | 1,125 | 15 N/mm² | 0.78 | 0.2 | 0.38 | 131 | 3.58 |
| 14/25 | 3×35+2×25/2+1x10ST | 7.6 | 56.8 | 60.8 | 4,780 | 1,575 | 15 N/mm² | 0.554 | 0.22 | 0.36 | 162 | 5.01 |
| 14/25 | 3×50+2×25/2+1x10ST | 9.1 | 59.9 | 63.9 | 5,540 | 2,250 | 15 N/mm² | 0.386 | 0.26 | 0.34 | 202 | 7.15 |
| 14/25 | 3×70+2×35/2+1x10ST | 10.9 | 65.5 | 69.5 | 6,800 | 3,150 | 15 N/mm² | 0.272 | 0.28 | 0.32 | 250 | 10.01 |
| 14/25 | 3×95+2×50/2+1x10ST | 12.7 | 69.3 | 73.3 | 7,980 | 4,275 | 15 N/mm² | 0.206 | 0.31 | 0.31 | 301 | 13.6 |
| 14/25 | 3×120+2×70/2+1x10ST | 14.4 | 74.7 | 78.7 | 9,540 | 5,400 | 15 N/mm² | 0.161 | 0.35 | 0.3 | 352 | 17.16 |
| 14/25 | 3×150+2×70/2+1x10ST | 16.2 | 79.6 | 83.6 | 10,900 | 6,750 | 15 N/mm² | 0.129 | 0.37 | 0.29 | 404 | 21.45 |
| 14/25 | 3×185+2×95/2+1x10ST | 17.8 | 83 | 87 | 12,450 | 8,352 | 15 N/mm² | 0.106 | 0.4 | 0.28 | 462 | 26.46 |
| 14/25 | 3×240+2×120/2+1x10ST | 20.6 | 90.2 | 95.2 | 15,250 | 10,800 | 15 N/mm² | 0.08 | 0.45 | 0.27 | 540 | 34.32 |
Archival copper-core-screen matrix · 18/30 kV · 9 rows
| U0/U | Construction | Conductor Ø | Dmin | Dmax | kg/km | F table | F/(3S) | R20 | C | L | A | Isc 1 s |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18/30 | 3×25+2×25/2+1x10ST | 6.5 | 56.5 | 60.5 | 4,360 | 1,125 | 15 N/mm² | 0.78 | 0.17 | 0.41 | 131 | 3.58 |
| 18/30 | 3×35+2×25/2+1x10ST | 7.6 | 58.8 | 62.8 | 5,090 | 1,575 | 15 N/mm² | 0.554 | 0.18 | 0.39 | 162 | 5.01 |
| 18/30 | 3×50+2×25/2+1x10ST | 9.1 | 63.8 | 67.8 | 5,920 | 2,250 | 15 N/mm² | 0.386 | 0.2 | 0.37 | 202 | 7.15 |
| 18/30 | 3×70+2×35/2+1x10ST | 10.9 | 67.6 | 71.6 | 6,950 | 3,150 | 15 N/mm² | 0.272 | 0.23 | 0.35 | 250 | 10.01 |
| 18/30 | 3×95+2×50/2+1x10ST | 12.7 | 74.5 | 78.5 | 8,880 | 4,275 | 15 N/mm² | 0.206 | 0.25 | 0.33 | 301 | 13.6 |
| 18/30 | 3×120+2×70/2+1x10ST | 14.4 | 78.1 | 82.1 | 10,210 | 5,400 | 15 N/mm² | 0.161 | 0.28 | 0.32 | 352 | 17.16 |
| 18/30 | 3×150+2×70/2+1x10ST | 16.2 | 82.7 | 87.7 | 12,040 | 6,750 | 15 N/mm² | 0.129 | 0.3 | 0.31 | 404 | 21.45 |
| 18/30 | 3×185+2×95/2+1x10ST | 17.8 | 87.9 | 92.9 | 13,470 | 8,352 | 15 N/mm² | 0.106 | 0.32 | 0.3 | 462 | 26.46 |
| 18/30 | 3×240+2×120/2+1x10ST | 20.6 | 93.9 | 98.9 | 16,400 | 10,800 | 15 N/mm² | 0.08 | 0.36 | 0.29 | 540 | 34.32 |
11. Critical document conflicts and engineering interpretation
Tensile-force conflict: the 2016 product text states 20 N/mm², but every table force equals 15 × 3 × phase section. A regional legacy document also states 15 N/mm². The 2019/2025 current table forces equal 20 × 3 × phase section.
Conductor finish changed: 2016/2019 descriptions state bare or untinned copper, while the 2025 brochure states tinned phase and PE conductors. Do not specify conductor finish from the family name alone.
Voltage range changed: the 2016 catalogue includes 14/25 and 18/30 kV; the 2019/2025 core matrix stops at 12/20 kV. The archival rows do not establish current availability.
Electrical-parameter header omission: the 2025 electrical summary line lists 3.6/6, 6/10 and 12/20 kV, while the adjacent current matrix also includes 8.7/15 kV. The 8.7/15 kV test and system values remain supported by the 2019 catalogue and table.
Reasoned inference: the most likely explanation for the archival tensile mismatch is that the tables retained a 15 N/mm² phase-conductor rule while the descriptive text was updated to 20 N/mm². This is an inference, not a corrected source value.
12. Representative engineering calculations
Three-phase apparent power: S = √3 × Uline × I
Active power example: P = S × 0.90
Resistance-only voltage drop: ΔU_R = √3 × I × R20 × 0.1 km
100 m cable weight force: W = mass(kg/km) × 0.1 × 9.81
Flexible minimum loop diameter (simple geometric check): approximately 2 × 10DNot calculated without project data:
– complex voltage drop and reactive power under actual load, despite published C and L;
– reflected-wave overvoltage, because source impedance, switching waveform and termination are unknown;
– pilot-loop protection settings and core-screen fault current;
– dragging force, because friction, slope and snag factors are installation-specific.
| U0/U | Construction | A | MVA | MW @0.9 | ΔU_R/100 m | 100 m weight | Fmax | 2×10Dmax |
|---|---|---|---|---|---|---|---|---|
| 3.6/6 | 3×95+2×50/2+1x10ST | 301 | 3.13 | 2.82 | 0.179% | 5.49 kN | 5,700 N | 569 mm |
| 6/10 | 3×150+2×70/2+1x10ST | 404 | 7 | 6.3 | 0.09% | 8.14 kN | 9,000 N | 682 mm |
| 8.7/15 | 3×240+2×120/2+1x10ST | 574 | 14.91 | 13.42 | 0.053% | 12.56 kN | 14,400 N | 833 mm |
| 12/20 | 3×185+2×95/2+1x10ST | 488 | 16.9 | 15.21 | 0.045% | 10.64 kN | 11,100 N | 798 mm |
13. Selection workflow
14. Installation, termination and acceptance
- Confirm the full designation, voltage class, conductor finish, screen option, phase section, split-PE section and pilot construction.
- Use sealed medium-voltage terminations sized to the exact Dmin/Dmax, semiconductive-layer design and core-screen architecture.
- Define whether the pilot is used for ground-check, interlock or control; verify voltage, current and continuity-monitoring equipment.
- For screened cores, engineer the bonding point, screen-fault current, touch voltage and protection clearing time.
- Verify the dragging route for abrasion, sharp rock edges, vehicle crossings, slope, water accumulation and cable recovery procedure.
- Control torsion: ±100°/m belongs to the unshielded product description; ±25°/m belongs to the archival screened design.
- Record conductor resistance, insulation/withstand results, PE continuity, pilot-loop resistance and dimensional inspection before commissioning.
15. FMEA — common failure modes
Wrong screen variant: an unshielded termination is used on a screened cable, creating field-control and earthing errors.
Archival force misread: 20 N/mm² is applied to a legacy table whose published force equals 15 N/mm².
Torsion overload: ±100°/m is applied to the screened design that was published at ±25°/m.
Pilot misuse: the 10 mm² pilot is connected without matching the ground-check or control system.
Sheath damage: dragging over sharp rock creates cuts that propagate through the bonded sheath system.
Version substitution: a 2016 bare-conductor design is replaced by a current tinned-conductor design without approval.
16. Source map and traceability
| Role | Document | Pages | Use in this article |
|---|---|---|---|
| Current technical description | Prysmian Powering the Surface, 2025 | pp. 32–35 | Construction, 36-row matrix, 20 N/mm², ±100°/m, 6D/10D, tinned conductors. |
| Current identifiers | Prysmian Mining & Tunnelling General Catalogue, 2019 | pp. 40–42 | Selected Part/MLFB numbers and the same 36-row core matrix. |
| Archival extended range | Prysmian Solutions for the Mining Industry, 2016 | pp. 40–47 | Unscreened 14/25 and 18/30 kV data; 54-row copper-core-screen matrix. |
| Regional legacy cross-check | Legacy CSA-oriented SB-SAM screen document | pp. 1–4 | 15 N/mm², ±25°/m and screened construction; used only to explain the archival force conflict. |
This guide is for preliminary engineering and source comparison. It does not certify present availability, approvals, compound identity, conductor finish, water depth or interchangeability of different document generations.
