FEICHUN CABLE6.35/11 kVDca CLASS70–630 mm²CU / XLPE / CTSLSZH / AWA / LSZHBS 783515 × D
Feichun CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV — Dca Medium-Voltage Cable
A full-English engineering guide to the single-core copper-conductor cable with XLPE insulation, copper metallic screen, LSZH separation sheath, single aluminium wire armour layer and LSZH outer sheath. The supplied source provides a complete 70–630 mm² matrix for fixed energy networks, underground routes, ducts and industrial areas where mechanical stresses are expected.
Voltage class
6.35/11 kV
Uo/U notation supplied; no Um value is added.
Armour
AWA
Single layer of aluminium wires around an LSZH separation sheath.
Family matrix
70–630 mm²
Eleven source rows, including both 400 mm² references.
Fire platform
Dca
LSZH layers plus source-listed IEC fire and smoke references.
Contents
- Engineering position
- Designation and construction logic
- Standard and evidence review
- Complete family specification
- Full 70–630 mm² source matrix
- Layer-by-layer cross-section
- AWA mechanical and electrical system
- Electrical, thermal and short-circuit design
- Fire performance and DoP separation
- Fixed-route application architecture
- Handling, bending and termination
- Selection comparison
- Failure mode analysis
- Feichun certification scope
- Source and data audit
1. Engineering position: an armoured LSZH MV cable for mechanically stressed fixed routes
CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV is a single-core, XLPE-insulated cable with a copper conductor, copper metallic screen, LSZH separation sheath, single-layer aluminium wire armour and LSZH outer sheath. The supplied application covers energy networks with sudden load changes where mechanical stresses are expected, residential or industrial areas, underground routes and ducts.
Dielectric platform
Class 2 copper, conductor semicon, XLPE insulation and insulation semicon create the MV radial electric-field system. Screen preparation and accessory stress control remain critical.
Class 2 copper, conductor semicon, XLPE insulation and insulation semicon create the MV radial electric-field system. Screen preparation and accessory stress control remain critical.
Mechanical platform
The AWA layer supplies mechanical protection around a single core. It must be coordinated with pulling load, sidewall pressure, cleats, impact, armour continuity and termination geometry.
The AWA layer supplies mechanical protection around a single core. It must be coordinated with pulling load, sidewall pressure, cleats, impact, armour continuity and termination geometry.
Fire / sheath platform
Two LSZH sheath layers, Dca source classification and the listed IEC fire references support a low-smoke, halogen-related fire strategy. They do not replace route fire engineering.
Two LSZH sheath layers, Dca source classification and the listed IEC fire references support a low-smoke, halogen-related fire strategy. They do not replace route fire engineering.
Electrical platform
Single-core formation changes inductance, capacitance, screen currents, armour losses and fault paths. Flat and trefoil ratings must be used only under their stated conditions.
Single-core formation changes inductance, capacitance, screen currents, armour losses and fault paths. Flat and trefoil ratings must be used only under their stated conditions.
Data boundary: the matrix below preserves the supplied Nexans reference without removing the duplicate 400 mm² row or replacing dashes with calculated values. It is a technical benchmark for Feichun development, not an invented Feichun manufacturing drawing, product code or certificate.
2. Designation and construction logic
| Designation element | Engineering reading | Design consequence | Evidence status |
|---|---|---|---|
| CU | Copper conductor. | Use the conductor resistance, fault duty and accessory area stated for the selected size. | Source construction |
| XLPE | Cross-linked polyethylene insulation. | Coordinate dielectric thickness, screen stripping, termination and test requirements with the 6.35/11 kV voltage class. | Source construction |
| CTS | Copper metallic screen designation; the source construction lists copper wires / copper tapes. | Do not assume one screen geometry or one screen fault rating across all sizes without the released drawing. | Source designation + construction |
| LSZH / LSZH | LSZH separation sheath plus LSZH outer sheath. | Separate the fire, mechanical and environmental functions of the two layers; LSZH alone is not a CPR class. | Source construction |
| AWA | Single layer of aluminium wire armour. | Review impact, compression, bonding, induced currents, armour losses, cleat forces and termination preparation. | Source construction |
| 6.35/11 kV | Rated voltage Uo/U as supplied. | Check system earthing, insulation coordination, accessories and test voltage; no Um value is inferred. | Supplied source |
| Dca Class | Family fire-performance title. | Use the current product-specific declaration for the exact size; do not copy the 1×70 DoP to every row. | Family title / DoP review |
Why two LSZH layers?
The separation sheath isolates the metallic screen from the armour. The outer sheath is the environmental interface. Their thickness, compound and bonding to accessories must be controlled separately.
The separation sheath isolates the metallic screen from the armour. The outer sheath is the environmental interface. Their thickness, compound and bonding to accessories must be controlled separately.
Why aluminium wire armour?
For a single-core AC cable, non-ferromagnetic armour avoids the ferromagnetic-armour issue associated with magnetic losses. The actual induced-current and loss result still depends on formation, spacing, bonding and earthing.
For a single-core AC cable, non-ferromagnetic armour avoids the ferromagnetic-armour issue associated with magnetic losses. The actual induced-current and loss result still depends on formation, spacing, bonding and earthing.
What class 2 does not mean
Stranded class 2 improves handling relative to a solid conductor, but it does not make this cable a reeling, festoon, drag-chain or continuous-torsion cable.
Stranded class 2 improves handling relative to a solid conductor, but it does not make this cable a reeling, festoon, drag-chain or continuous-torsion cable.
Mechanical-stress application
The source expects mechanical stresses, but the installed route still needs a pulling plan, impact assessment, support design, minimum radius and accessory method statement.
The source expects mechanical stresses, but the installed route still needs a pulling plan, impact assessment, support design, minimum radius and accessory method statement.
3. Standard and evidence review
| Reference | Role in this article | Engineering interpretation | Boundary |
|---|---|---|---|
| BS 7835 | Product standard listed by the Nexans source. | Use the controlled project copy and confirm the edition / conformity route in the purchase specification. | The source does not state an edition in the supplied text. |
| IEC 60332-3 Cat. C | Vertical flame-spread test reference for bunched cables. | It evaluates flame spread under defined test conditions; it is not a direct replacement for the CPR Dca declaration. | Source-listed test reference. |
| IEC 60754-1 | Halogen-free reference. | Use with the actual insulation / sheath compound and current report. | Source-listed. |
| IEC 60754-2 | Gases-corrosivity reference. | Relevant to corrosive-gas control for plant, tunnel and building fire strategy. | Source-listed. |
| IEC 61034 | Smoke-density reference. | Combine with route geometry, cable grouping, ventilation and fire compartmentation. | Source lists IEC 61034 without a part number. |
| IEC 60502-2 | Related IEC MV cable standard, not the product standard listed for this reference. | If a project requires IEC 60502-2, obtain an explicit conformity statement; do not silently treat BS 7835 and IEC 60502-2 as interchangeable. | Comparison / project confirmation. |
Evidence rule: the checked Nexans product page identifies BS 7835, the copper / XLPE / screen / LSZH / AWA / LSZH construction, the 15×D laying factor and the characteristic fields. The official 1×70 PDF supplies the page-1 construction and page-2 technical values; the separate DoP supplies the product-specific Dca-s2,d2,a2 declaration. These documents are not merged into one undated specification.
4. Complete family specification
Source values are shown in the second column; interpretation is separate. The article preserves the user-provided 2026 source record and adds only official product-page / DoP fields with their size and document limitations.
| Specification field | Reference value | Engineering interpretation | Evidence status |
|---|---|---|---|
| Product designation | CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV – Dca Class | Single-core XLPE-insulated medium-voltage cable with a copper conductor, copper screen, two LSZH sheath layers and a single layer of aluminium wire armour. | Supplied / Nexans family reference |
| Product standard | BS 7835 | The source lists BS 7835 as the product standard. Confirm the contract edition and the exact Feichun conformity route before release. | Supplied source — edition to be confirmed |
| Rated Voltage Uo/U (Um) | 6.35 / 11 kV | The source gives Uo/U but does not state an Um value; no Um value is invented here. | Supplied source |
| Conductor material | Copper | Low-resistance phase conductor for fixed MV energy-network feeders and industrial routes. | Supplied source |
| Conductor flexibility | Stranded class 2 | Circular stranded construction supports laying and termination handling; it is not a continuous-flex or reeling rating. | Supplied source |
| Number of cores | 1 | Single-core AC cable; formation, screen bonding, armour bonding, induced currents and cleat forces are system-level decisions. | Official 1×70 product page |
| Conductor shape | Circular stranded (RM) | The checked 1×70 product page identifies circular stranded RM geometry. | Official 1×70 product page |
| Operating temperature, range | -20 … 90 °C | The supplied usage range; ambient, installation, accessory and sheath limits still govern the complete system. | Supplied source |
| Short-circuit max. conductor temperature | 250 °C | Use with protection clearing time, conductor I²t and accessory short-circuit capability. | Official 1×70 product page / supplied source |
| Bending factor when laying | 15 (xD) | The 15×D factor is a laying control. It does not establish a dynamic travel, torsion or reeling rating. | Supplied source |
| Max. conductor temperature in service | 90 °C | Continuous conductor temperature limit stated in the source characteristics. | Supplied source |
| Mechanical resistance to impacts | Good | The checked 1×70 product page lists good impact resistance; verify the exact released Feichun armour and sheath construction. | Official 1×70 product page |
| Conductor screen | Semi-conducting compound (XLPE) | Radial electric-field transition at the conductor-to-insulation interface. | Supplied source |
| Insulation | XLPE | Primary solid dielectric layer for the 6.35/11 kV voltage class. | Supplied source |
| Insulation screen | Semi-conducting compound (XLPE) | Controls the outer electric-field interface before the semi-conducting tape and metallic screen. | Supplied source |
| Semi-conducting tape | Crape paper | The source uses the term “Crape paper”; it is preserved without silently changing the material designation. | Supplied source |
| Metallic screen | Copper wires / copper tapes | Provides screen continuity and an earth-fault path; the source wording does not assign a single screen geometry to every size. | Supplied source |
| Separation sheath | LSZH | Separates the metallic screen from the aluminium wire armour and contributes to the multi-layer fire / mechanical system. | Supplied source |
| Wire armour | Single layer aluminium wire | Non-ferromagnetic armour is an appropriate engineering choice for a single-core AC construction, but induced-current, bonding and mechanical calculations remain necessary. | Supplied source |
| Outer sheath | LSZH | External low-smoke, halogen-free protection; exact compound, thickness, colour and CPR evidence must match the released product. | Supplied source |
| Flame retardant | IEC 60332-3 Cat. C | Bunched-cable vertical flame-spread test reference; it is not the same as the CPR Dca classification. | Supplied source |
| Gases corrosivity | IEC 60754-2 | Corrosive-gas performance reference listed by the source. | Supplied source |
| Halogen free | IEC 60754-1 | Halogen-acid-gas reference listed by the source. | Supplied source |
| Smoke density | IEC 61034 | Smoke-density reference listed by the source; the checked PDF uses IEC 61034 without adding a part number. | Supplied source |
| Fire-performance family title | Dca Class | The family title supplied by the user and Nexans family page. Exact CPR sub-classes must be taken from the product-specific declaration. | Supplied / family reference |
| Declared fire performance for 1×70 mm² | Dca-s2,d2,a2 | The checked DoP No. 1000587-TRDE declares this performance for product reference 10536095 only; do not generalise it to all matrix rows without each current declaration. | Official 1×70 DoP |
| DoP number for 1×70 mm² | 1000587-TRDE | Product-specific declaration associated with Nexans ref. 10536095. | Official 1×70 DoP |
| DoP date | 5/23/18 | This date belongs to the checked 1×70 DoP and is distinct from the supplied technical-sheet generation date 8/4/26. | Official 1×70 DoP — separate document year |
| AVCP | System 3 | Assessment and Verification of Constancy of Performance shown in the checked 1×70 DoP. | Official 1×70 DoP |
| Notified body | 1008 | Number shown in the checked 1×70 DoP; do not treat it as a Feichun certification identifier. | Official 1×70 DoP |
| Harmonized standard in 1×70 DoP | EN 50575:2014+A1:2016 | The CPR reference stated in the checked 1×70 declaration. | Official 1×70 DoP |
| Application | Energy networks with sudden load changes where mechanical stresses are expected; residential or industrial areas; underground or in ducts | Use for fixed MV routes after voltage, thermal, mechanical, fire, sheath and accessory conditions are closed by design. | Supplied source |
| Source record | Generated 8/4/26 — www.nexans.com.tr — Page 1 / 2 | Preserved from the supplied reference; confirm the controlled document revision before procurement. | Supplied source metadata |
| Source record continuation | CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV – Dca Class — Page 2 / 2 | The supplied matrix and characteristics are treated as the technical reference record for this article. | Supplied source metadata |
5. Full source matrix — CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV
This is the complete supplied matrix. The two 400 mm² rows are intentionally retained because they carry different Nexans references, even though the numerical fields shown are identical.
| Cross section [mm²] | Nom. outer diam. [mm] | Approx. weight [kg/km] | Max. DC Resist. Cond. 20 °C [Ohm/km] | Approx. inductance, flat formation [mH/km] | Approx. inductance, trefoil formation [mH/km] | Nom. phase capacitance [µF/km] | Perm. current buried 20 °C – flat [A] | Perm. current buried 20 °C – trefoil [A] | Perm. current in air 30 °C – flat [A] | Current rating in air 30 °C – trefoil [A] | Short circuit conductor 1 s [kA] | Short circuit screen 1 s [kA] | Nexans Ref. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 70 | 28.0 | 1400 | 0.268 | 0.48 | 0.4 | 0.27 | 246 | 239 | 356 | 296 | 10 | .58 | 10536095 |
| 95 | 30.0 | 1700 | 0.193 | 0.57 | 0.38 | 0.31 | 293 | 285 | 434 | 361 | 13.6 | .58 | 10518331 |
| 120 | 33.0 | 2000 | 0.153 | 0.56 | 0.37 | 0.34 | 332 | 323 | 500 | 417 | 17.2 | .58 | 10535897 |
| 150 | 34.0 | 2500 | 0.124 | 0.55 | 0.36 | 0.36 | 366 | 361 | 559 | 473 | 21.4 | .77 | 10520983 |
| 185 | 36.0 | 2750 | 0.099 | 0.54 | 0.35 | 0.4 | 410 | 406 | 637 | 543 | 26.5 | .77 | 10520982 |
| 240 | 38.0 | 3500 | 0.075 | 0.52 | 0.33 | 0.45 | 470 | 469 | 745 | 641 | 34.3 | .77 | 10522716 |
| 300 | 41.0 | 4000 | 0.06 | 0.51 | 0.33 | 0.49 | 524 | 526 | 846 | 735 | 42.9 | .96 | 10535265 |
| 400 | 45.0 | 5000 | 0.047 | 0.51 | 0.32 | 0.54 | 572 | 590 | 938 | 845 | 57.2 | .96 | 10536031 |
| 400 | 45.0 | 5000 | 0.047 | 0.51 | 0.32 | 0.54 | 572 | 590 | 938 | 845 | 57.2 | .96 | 10543609 |
| 500 | 48.0 | 6250 | 0.037 | 0.49 | 0.31 | 0.61 | – | 688 | – | 1000 | 71.5 | 1.16 | 10521082 |
| 630 | 53.0 | 7750 | 0.028 | 0.49 | 0.3 | 0.69 | – | 774 | 1150 | 1150 | 90.1 | 1.16 | 10530522 |
Dashes in the supplied matrix are retained as dashes. They are not zero values and are not replaced by estimates from another formation or size.
6. Layer-by-layer cross-section
The source order is: copper conductor; semi-conducting compound (XLPE) conductor screen; XLPE insulation; semi-conducting compound (XLPE) insulation screen; Crape paper semi-conducting tape; copper wires / copper tapes metallic screen; LSZH separation sheath; single-layer aluminium wire armour; LSZH outer sheath.
Conductor and screens
Class 2 copper provides the current path. The semiconducting screens manage electric-field transitions and require controlled stripping at MV accessories.
Class 2 copper provides the current path. The semiconducting screens manage electric-field transitions and require controlled stripping at MV accessories.
Crape paper layer
The supplied source calls this “Crape paper” under semi-conducting tape. Preserve the term in the purchase document until the controlled material specification confirms the final wording.
The supplied source calls this “Crape paper” under semi-conducting tape. Preserve the term in the purchase document until the controlled material specification confirms the final wording.
Copper metallic screen
Screen continuity affects earth-fault current, induced voltage, accessory design and electromagnetic behaviour. A generic “screen present” statement is not enough.
Screen continuity affects earth-fault current, induced voltage, accessory design and electromagnetic behaviour. A generic “screen present” statement is not enough.
Separation sheath and armour
The LSZH separation sheath isolates the screen from the AWA layer; the aluminium wires supply mechanical protection. Both must be compatible with stripping tools, glands, cleats and terminations.
The LSZH separation sheath isolates the screen from the AWA layer; the aluminium wires supply mechanical protection. Both must be compatible with stripping tools, glands, cleats and terminations.
7. AWA mechanical and electrical system
Mechanical protection
Armour reduces exposure to impact and compression, but it does not make the cable indestructible. Confirm route obstacles, trench entry, rollers, cleats, backfill, minimum radius and external loads.
Armour reduces exposure to impact and compression, but it does not make the cable indestructible. Confirm route obstacles, trench entry, rollers, cleats, backfill, minimum radius and external loads.
Non-ferromagnetic armour
Aluminium wire armour is appropriate for a single-core AC architecture where ferromagnetic armour could create additional magnetic effects. Final losses must be solved from actual formation and bonding.
Aluminium wire armour is appropriate for a single-core AC architecture where ferromagnetic armour could create additional magnetic effects. Final losses must be solved from actual formation and bonding.
Screen versus armour
The copper screen and AWA layer are not automatically the same electrical conductor. Bonding, fault-current distribution and touch-voltage control must be defined at both ends and across joints.
The copper screen and AWA layer are not automatically the same electrical conductor. Bonding, fault-current distribution and touch-voltage control must be defined at both ends and across joints.
Accessory boundary
Glands, cleats, terminations and joints must accommodate the outer diameter, armour geometry, screen continuity and the exact manufacturer preparation dimensions.
Glands, cleats, terminations and joints must accommodate the outer diameter, armour geometry, screen continuity and the exact manufacturer preparation dimensions.
8. Electrical, thermal and short-circuit design
Formation-specific ratings
The source gives buried and in-air current ratings for both flat and trefoil formations. The 500 mm² row has dashes for buried flat and air flat; retain them and use only the published trefoil values unless a current calculation provides the missing basis.
The source gives buried and in-air current ratings for both flat and trefoil formations. The 500 mm² row has dashes for buried flat and air flat; retain them and use only the published trefoil values unless a current calculation provides the missing basis.
Inductance and capacitance
Flat and trefoil inductance values differ because conductor geometry changes magnetic coupling. Nominal phase capacitance is supplied as a family matrix value; use the actual route arrangement for system studies.
Flat and trefoil inductance values differ because conductor geometry changes magnetic coupling. Nominal phase capacitance is supplied as a family matrix value; use the actual route arrangement for system studies.
Voltage drop and losses
Use DCR at 20 °C with temperature correction and the applicable AC impedance model. For a single-core three-phase circuit, phase formation, screen / armour losses and power factor can influence the result.
Use DCR at 20 °C with temperature correction and the applicable AC impedance model. For a single-core three-phase circuit, phase formation, screen / armour losses and power factor can influence the result.
Fault duty
The matrix supplies both conductor and screen 1 s short-circuit fields. Verify the protection clearing time, initial temperature, conductor 250 °C limit, screen / armour path, joints and terminations as one I²t chain.
The matrix supplies both conductor and screen 1 s short-circuit fields. Verify the protection clearing time, initial temperature, conductor 250 °C limit, screen / armour path, joints and terminations as one I²t chain.
Three-phase voltage-drop screening relation:
ΔU ≈ √3 × I × (R_ac × cos φ + X × sin φ) × LThermal acceptance:
I_load ≤ I_z(actual formation, ambient, soil, grouping, screen losses, armour losses, accessory limits)Short-circuit coordination:
I²t_protection ≤ I²t_conductor / screen / armour / joint / termination systemThe supplied matrix provides DCR, inductance, capacitance, formation-specific ratings and 1 s conductor / screen values. The final calculation must use the controlled route, protection settings, earthing method and project standard.
| Design check | Source fields | Failure if copied without review | Release action |
|---|---|---|---|
| Buried flat circuit | Buried 20 °C – flat formation [A] | Soil thermal resistivity, depth, grouping, duct fill and moisture change the result. | Recalculate actual route. |
| Buried trefoil circuit | Buried 20 °C – trefoil formation [A] | Trefoil spacing, screen / armour losses and thermal backfill affect current capacity. | Use only under stated basis. |
| Air installation | Air 30 °C flat / trefoil [A] | Ventilation, support spacing, solar heat, grouping and enclosure temperature change the result. | Recalculate actual route. |
| Screen fault duty | Short circuit screen 1 s [kA] | Screen bonding, armour bonding and return-path impedance can change the fault-current split. | Verify complete earthing and accessory chain. |
9. Fire performance, LSZH and document-year separation
The supplied family title is Dca Class. The checked 1×70 mm² DoP, associated with Nexans reference 10536095, declares Dca-s2,d2,a2 according to EN 50575:2014+A1:2016, with DoP No. 1000587-TRDE, date 5/23/18, AVCP System 3 and notified body 1008. That declaration is kept separate from the supplied technical-sheet record generated 8/4/26 and is not automatically applied to the other sizes.
Dca family title
Use the title as a family-level search and selection label. The exact ordered product must be tied to a current declaration.
Use the title as a family-level search and selection label. The exact ordered product must be tied to a current declaration.
Dca-s2,d2,a2 for 1×70
This is a product-specific DoP performance statement for reference 10536095. It should not be copied to 95–630 mm² without size-specific evidence.
This is a product-specific DoP performance statement for reference 10536095. It should not be copied to 95–630 mm² without size-specific evidence.
IEC 60332-3 Cat. C
The official IEC record describes Category C vertical flame spread of vertically mounted bunched wires or cables under defined test conditions. It is not the CPR Dca label.
The official IEC record describes Category C vertical flame spread of vertically mounted bunched wires or cables under defined test conditions. It is not the CPR Dca label.
IEC 60754-1 and -2
Halogen-free and gases-corrosivity references address material behaviour under defined tests. They do not replace fire stopping, support, grouping or route design.
Halogen-free and gases-corrosivity references address material behaviour under defined tests. They do not replace fire stopping, support, grouping or route design.
IEC 61034
Smoke density is a test reference. Visibility and smoke movement in an installed route also depend on cable quantity, ventilation, enclosure and fire compartmentation.
Smoke density is a test reference. Visibility and smoke movement in an installed route also depend on cable quantity, ventilation, enclosure and fire compartmentation.
Two dates, two records
Never merge the 2018 1×70 DoP with the 2026 generated technical sheet as though they were one revision. Confirm current product documentation before issuing a Feichun claim.
Never merge the 2018 1×70 DoP with the 2026 generated technical sheet as though they were one revision. Confirm current product documentation before issuing a Feichun claim.
Procurement rule: request the current DoP and fire-test dossier for the exact Feichun construction and size. Do not treat LSZH, IEC 60332-3 Cat. C or the family title alone as proof of a complete CPR declaration.
10. Fixed-route application architecture
Substation and switchgear
Use matched terminations, screen / armour bonding and phase formation. Confirm clearances, induced currents, touch voltage, fault return path and accessory heat.
Use matched terminations, screen / armour bonding and phase formation. Confirm clearances, induced currents, touch voltage, fault return path and accessory heat.
Underground and ducts
Review impact, water, drainage, pulling load, sidewall pressure, duct fill, backfill thermal resistivity, route entry and end sealing.
Review impact, water, drainage, pulling load, sidewall pressure, duct fill, backfill thermal resistivity, route entry and end sealing.
Industrial and port shore-side feeders
The source application is relevant to fixed routes where mechanical stress is expected. Salt atmosphere, flooding, UV, rodents, impact, vibration and fire compartments still require project review.
The source application is relevant to fixed routes where mechanical stress is expected. Salt atmosphere, flooding, UV, rodents, impact, vibration and fire compartments still require project review.
Moving equipment boundary
Do not use this fixed-installation reference for a crane reel, festoon, drag-chain or continuous travel route without a dedicated dynamic cable design.
Do not use this fixed-installation reference for a crane reel, festoon, drag-chain or continuous travel route without a dedicated dynamic cable design.
11. Handling, bending and termination
- Confirm the drum label, product reference, cable length, end seals, outside diameter, mass and current document revision before unloading.
- Apply the supplied
15 (xD)laying factor. The derived radii below are arithmetic checks from the supplied outside diameters; accessory instructions may require a larger radius. - Align the drum and pay off in the marked direction. Avoid reverse winding, flange impact, uncontrolled twist and local LSZH sheath abrasion.
- Use controlled rollers and pulling equipment. Verify pulling load, sidewall pressure, armour exposure, entry geometry, support spacing and trench corners.
- Maintain the copper screen, semiconducting interfaces, separation sheath and AWA geometry during preparation. Glands and terminations must be matched to the exact construction.
- Bond screen and armour according to the earthing design. Record continuity, bonding arrangement, torque and test results at every intended section.
- Before energisation, complete conductor resistance, screen / armour continuity, insulation and sheath tests, MV withstand or partial-discharge tests where specified, phase identification, accessory inspection, fire documentation and as-built records.
| Cross section | Derived laying calculation | Minimum laying radius | Mass conversion | Approx. mass per 100 m |
|---|---|---|---|---|
| 70 mm² | 15 × 28.0 mm | 420.0 mm | 1400 kg/km ÷ 10 | 140.0 kg/100 m |
| 95 mm² | 15 × 30.0 mm | 450.0 mm | 1700 kg/km ÷ 10 | 170.0 kg/100 m |
| 120 mm² | 15 × 33.0 mm | 495.0 mm | 2000 kg/km ÷ 10 | 200.0 kg/100 m |
| 150 mm² | 15 × 34.0 mm | 510.0 mm | 2500 kg/km ÷ 10 | 250.0 kg/100 m |
| 185 mm² | 15 × 36.0 mm | 540.0 mm | 2750 kg/km ÷ 10 | 275.0 kg/100 m |
| 240 mm² | 15 × 38.0 mm | 570.0 mm | 3500 kg/km ÷ 10 | 350.0 kg/100 m |
| 300 mm² | 15 × 41.0 mm | 615.0 mm | 4000 kg/km ÷ 10 | 400.0 kg/100 m |
| 400 mm² | 15 × 45.0 mm | 675.0 mm | 5000 kg/km ÷ 10 | 500.0 kg/100 m |
| 400 mm² | 15 × 45.0 mm | 675.0 mm | 5000 kg/km ÷ 10 | 500.0 kg/100 m |
| 500 mm² | 15 × 48.0 mm | 720.0 mm | 6250 kg/km ÷ 10 | 625.0 kg/100 m |
| 630 mm² | 15 × 53.0 mm | 795.0 mm | 7750 kg/km ÷ 10 | 775.0 kg/100 m |
Movement boundary: 15×D is a laying factor. It does not establish continuous-flex, torsion, reeling, festoon or drag-chain performance.
12. Selection comparison for engineers
| Requirement | CU/XLPE/CTS/LSZH/AWA/LSZH reference | What must be verified | Engineering decision |
|---|---|---|---|
| Mechanically exposed fixed route | Single aluminium wire armour; source impact resistance for 1×70 is Good. | Impact energy, compression, trench / duct entry, backfill, cleats, joints and accessory armour handling. | Strong candidate subject to mechanical design. |
| Single-core AC feeder | Copper conductor, copper screen and AWA construction. | Formation, induced currents, screen / armour bonding, losses, touch voltage and fault return path. | Suitable subject to system study. |
| Fire-sensitive route | Dca family title, LSZH / LSZH, IEC 60332-3 Cat. C, IEC 60754-1 / -2 and IEC 61034 listed. | Current size-specific DoP, grouping, fire stopping, supports, enclosure and local rules. | Use exact ordered-product evidence. |
| High-current feeder | 70–630 mm² matrix with flat and trefoil ratings. | Ambient, soil, depth, spacing, grouping, duct thermal resistance, screen / armour losses and load profile. | Select after thermal and voltage-drop study. |
| Port shore-side fixed feeder | Application includes residential / industrial areas, underground and ducts with mechanical stresses. | Salt, flooding, UV, rodents, impact, vibration, fire compartments and maintenance access. | Confirm environmental design. |
| Reeling, festoon or drag chain | Not established by this fixed-installation reference. | Cycles, torsion, speed, acceleration, rollers, winding geometry and dynamic bend radius. | Select a dedicated dynamic cable family. |
13. Failure mode and effects analysis
Armour damage: impact or incorrect pulling damages AWA or outer LSZH; inspect before burial and define repair / rejection criteria.
Screen discontinuity: copper screen continuity is lost at a joint or termination; fault-current path and electric-field control are compromised.
Bonding error: screen and armour are bonded without a coordinated earthing study; induced currents, losses or touch voltage become unacceptable.
Wrong formation rating: a buried trefoil value is used for flat formation, or a dash is interpreted as a zero or an estimate.
Radius violation: a trench corner, roller or gland bends the cable below the 15×D laying factor.
Fire-class substitution: the 1×70 Dca-s2,d2,a2 declaration is copied to another size without a matching current DoP.
Document-year confusion: the 2018 DoP and 2026 technical sheet are treated as one revision, hiding changes in product, declaration or test basis.
Dynamic misuse: a fixed AWA cable is put into a reel, festoon or energy chain because aluminium armour appears robust.
14. Feichun Cable certification and project assurance
Engineered for maximum safety in demanding environments, Feichun Cable cable systems comply with global standards including ATEX, IECEx, VDE, CE, UKCA, EAC, and the Russian Fire Safety Certificate. They are the trusted choice for heavy-duty mining equipment, ship-to-shore cranes, RTG/RMG cranes, and conveyor systems where high reliability is non-negotiable.
For a Feichun 6.35/11 kV AWA release
Confirm conductor area, DCR, outside diameter, mass, inductance, capacitance, flat / trefoil current ratings, conductor and screen fault duty, 15×D factor, impact performance, screen, armour, LSZH compounds and accessories.
Confirm conductor area, DCR, outside diameter, mass, inductance, capacitance, flat / trefoil current ratings, conductor and screen fault duty, 15×D factor, impact performance, screen, armour, LSZH compounds and accessories.
Certification is configuration-specific
Certification capability does not make every size automatically Dca, BS 7835, IECEx, ATEX, EAC or fire-certified. The exact cable construction, test report, declaration and market documentation must match.
Certification capability does not make every size automatically Dca, BS 7835, IECEx, ATEX, EAC or fire-certified. The exact cable construction, test report, declaration and market documentation must match.
AWA system dossier
The controlled release should identify armour wire material and lay, separation sheath, armour bonding, screen fault path, impact / mechanical test basis, stripping dimensions and gland / termination compatibility.
The controlled release should identify armour wire material and lay, separation sheath, armour bonding, screen fault path, impact / mechanical test basis, stripping dimensions and gland / termination compatibility.
Feichun engineering value
Feichun can develop the CU/XLPE/CTS/LSZH/AWA/LSZH architecture as a mechanically protected, low-smoke MV platform while adapting conductor, screen, armour, sheath and project testing to the actual route.
Feichun can develop the CU/XLPE/CTS/LSZH/AWA/LSZH architecture as a mechanically protected, low-smoke MV platform while adapting conductor, screen, armour, sheath and project testing to the actual route.
Release condition: this article does not invent a Feichun certificate number, notified body, armour test result, current DoP, drum dimension or product-specific BS 7835 declaration. Unstated Feichun values must be confirmed in the current controlled technical file.
15. Source map and data-status audit
| Source | Use in this article | Status and limitation |
|---|---|---|
| Nexans Türkiye CU/XLPE/CTS/LSZH/AWA/LSZH family page | Family title, 70–630 mm² product list, BS 7835, application, construction, 15×D factor and characteristics. | Manufacturer family reference; confirm current revision and ordered product. |
| Nexans Türkiye 1×70 mm² product page | Product reference 10536095, construction fields, impact resistance, dimensions, electrical values and usage characteristics. | Checked size-specific page; do not generalise all product-page fields without confirming each size. |
| Nexans 1×70 mm² technical PDF | Original two-page source record, page-1 construction, page-2 characteristics, generated date and exact 1×70 values. | Source PDF is size-specific; drawings, dimensions, weights and ratings are indicative until controlled release. |
| Nexans 1×70 mm² Declaration of Performance | DoP 1000587-TRDE, date 5/23/18, Dca-s2,d2,a2, AVCP System 3, EN 50575:2014+A1:2016 and notified body 1008. | Product-specific 1×70 evidence; not automatically applicable to every matrix row. |
| BSI Knowledge — BS 7835 | Standard title and publication / status context for the BS 7835 reference. | Confirm the project-adopted edition and contractual standard basis. |
| IEC 60502-2 official publication record | Comparison boundary showing the related IEC MV cable standard; it is not silently substituted for BS 7835. | Use only if the project explicitly requires IEC 60502-2 conformity. |
| IEC 60332-3-24:2018 official publication record | Category C vertical flame-spread test context. | Test reference; not itself a CPR Dca declaration. |
| User-supplied reference record | Complete 70–630 mm² matrix, source metadata, construction, operating temperatures and fire references reproduced in this article. | Preserved exactly where supplied; missing / dashed fields are not filled from another cable. |
This article is for preliminary engineering, technical search and comparison. The final Feichun CU/XLPE/CTS/LSZH/AWA/LSZH 6.35/11 kV Dca release must be checked against the current product data sheet, DoP, fire-test report, BS 7835 basis, accessories, installation formation, earthing design, project fire strategy and local authority requirements.
