FEICHUN CABLEYXC7Z1Y2Z1 20.3/35 kVN2XSHR(AL)H1 CORECu / XLPE / Cu SCREENLSZH / ROUND AL WIRES / LSZHNATIONAL TSEKIEC 60332-3 CAT. C
Feichun YXC7Z1Y2Z1 20.3/35 kV — Single-Core XLPE Cable with LSZH Sheaths and Round Aluminium-Wire Armour
A full-English engineering guide to the supplied YXC7Z1Y2Z1 20.3/35 kV record. The construction is copper conductor, semiconducting XLPE screens, XLPE insulation, crape tape, concentric copper screen, LSZH separation sheath, single-layer round aluminium wires and LSZH outer sheath. The article preserves all three supplied product references, including the two separate 240 mm² rows.
Voltage class
20.3/35 kV
Uo/U notation supplied by the source.
Product rows
95 / 240
Two conductor areas; the 240 mm² reference appears twice.
Armour
ROUND AL WIRES
Single layer under LSZH protection.
Fire reference
CAT. C
IEC 60332-3-24 Cat. C; no CPR class is added.
Contents
- Engineering position
- Designation and construction logic
- Standard and evidence review
- Complete source specification
- Technical matrix
- Published-data limitations
- Derived installation checks
- Layer-by-layer cross-section
- Electrical, screen and armour system
- Thermal, voltage-drop and short-circuit design
- Fire and LSZH performance boundary
- Fixed-route applications
- Handling and termination
- Selection comparison
- Failure mode analysis
- Feichun certification scope
- Source and revision audit
1. Engineering position: a high-voltage single-core LSZH armoured cable
YXC7Z1Y2Z1 20.3/35 kV is a single-core, Class 2 copper-conductor XLPE cable with concentric copper screen, LSZH separation and outer sheaths, and single-layer round aluminium-wire armour. The supplied application covers energy networks with sudden load changes in residential or industrial areas, underground or in ducts.
High-voltage dielectric platform
At 20.3/35 kV, conductor screen, XLPE insulation and insulation screen must be coordinated with the exact termination, joint, test and earthing system.
At 20.3/35 kV, conductor screen, XLPE insulation and insulation screen must be coordinated with the exact termination, joint, test and earthing system.
Screen and armour distinction
The concentric copper screen is an electrical and fault-path component. The round aluminium wires are mechanical armour. Their continuity and bonding duties must be designed separately.
The concentric copper screen is an electrical and fault-path component. The round aluminium wires are mechanical armour. Their continuity and bonding duties must be designed separately.
LSZH route platform
LSZH separation and outer sheaths support low-smoke, halogen-related project objectives, but the supplied record only states IEC 60332-3 Cat. C and does not provide a CPR class.
LSZH separation and outer sheaths support low-smoke, halogen-related project objectives, but the supplied record only states IEC 60332-3 Cat. C and does not provide a CPR class.
Data discipline
The matrix contains 95 mm² and two 240 mm² reference rows. No row is collapsed, and no missing screen-fault value is invented.
The matrix contains 95 mm² and two 240 mm² reference rows. No row is collapsed, and no missing screen-fault value is invented.
Engineering boundary: 12 (xD) is a laying factor. It does not qualify repeated flexing, torsion, reeling, festoon or drag-chain service.
2. Designation and construction logic
Construction sequence
| Layer / field | Supplied construction | Engineering consequence |
|---|---|---|
| YXC7Z1Y2Z1 | National title for 20.3/35 kV single-core armoured cable. | Use the complete title and exact product reference. |
| N2XSHR(AL)H | Printed international designation. | Retain as a document cross-reference; do not infer beyond the construction. |
| Cu / XLPE | Copper conductor, semiconducting conductor screen and XLPE insulation. | Coordinate electric-field control and MV accessories. |
| Screen | Semiconducting insulation screen, crape tape, concentric copper wires and copper tape. | Verify continuity, bonding and fault-duty path. |
| LSZH / Al / LSZH | LSZH separation sheath, round aluminium wires, LSZH outer sheath. | Keep sheath, armour and fire evidence configuration-specific. |
3. Standard and evidence review
Standards and evidence
| Reference | Role in this article | Boundary |
|---|---|---|
| National TSEK | Product standard printed in the supplied record. | Confirm exact edition, certificate and conformity file. |
| IEC 60332-3-24 Cat. C | Source-listed flame-retardant reference. | Not a CPR class or complete fire strategy. |
| IEC 60502-2 | Related international MV engineering context. | Not substituted for the supplied National TSEK reference. |
| LSZH | Supplied for separation and outer sheaths. | Do not infer s/d/a subclasses or DoP without product-specific evidence. |
4. Complete source specification
| Specification field | Reference value | Engineering interpretation | Evidence status |
|---|---|---|---|
| Family title | YXC7Z1Y2Z1 20.3/35 kV | National product title in the supplied record. | Supplied source |
| Printed international designation | N2XSHR(AL)H | Retained separately as printed in the supplied construction record; do not infer beyond the controlled construction. | Supplied source |
| Product description | 20,3/35 kV XLPE insulated single core armoured cables with copper conductor | Single-core copper-conductor XLPE cable with concentric copper screen, LSZH separation sheath, round aluminium-wire armour and LSZH outer sheath. | Supplied source |
| National standard | TSEK | The source lists National TSEK. No automatic IEC 60502-2 conformity is claimed. | Supplied source |
| Application | These are cables with low dielectric losses used in energy network with sudden load changes. Laid in residental or industrial areas, underground or in ducts. | Fixed energy-network application; verify system voltage, route, thermal, mechanical, fire and accessory conditions. | Supplied source |
| Conductor material | Copper | Phase conductor material stated by the source. | Supplied source |
| Conductor flexibility | Class 2 | Class 2 circular stranded construction; not a continuous-flex, reeling or drag-chain rating. | Supplied source |
| Type of conductor | Circular, stranded, class 2 | Conductor geometry stated by the source. | Supplied source |
| Number of cores | 1 | Single-core cable unit; phase formation and screen/armour bonding are installation-level decisions. | Supplied source |
| Published product rows | 95 mm²; 240 mm²; 240 mm² | The 240 mm² row appears with three Nexans references in the supplied matrix; all are preserved. | Supplied source matrix |
| Rated Voltage Uo/U (Um) | 20.3 / 35 kV | High-voltage accessory, insulation coordination and protection settings must match this class. | Supplied source |
| Average insulation thickness | 8.5 mm | Published dimensional characteristic. | Supplied source |
| Operating temperature, range | -20 … 90 °C | Apply actual ambient, formation, soil, duct and accessory limits. | Supplied source |
| Short-circuit max. conductor temperature | 250 °C | Use with conductor I²t, protection clearing time, screen/armour design and accessories. | Supplied source |
| Bending factor when laying | 12 (xD) | Laying factor only; it does not establish repeated dynamic bending. | Supplied source |
| Max. conductor temperature in service | 90 °C | Continuous conductor service limit. | Supplied source |
| Flame retardant | IEC 60332-3-24 Cat. C | Bunched-cable vertical flame-spread reference; not itself a CPR class. | Supplied source |
| Conductor screen | Semi-conducting compound (XLPE) | Controls the electric-field transition at the copper/XLPE interface. | Supplied construction |
| Insulation | XLPE | Primary extruded solid dielectric for 20.3/35 kV service. | Supplied construction |
| Insulation screen | Semi-conducting compound (XLPE) | Controls the outer electric-field interface. | Supplied construction |
| Semi-conducting tape | Crape tape | Source wording retained exactly. | Supplied construction |
| Metallic screen | Concentric / Copper wires + copper tape | Screen continuity, bonding and fault duty require a project earthing design. | Supplied construction |
| Separation sheath | LSZH | Separates the metallic screen from the aluminium-wire armour. | Supplied construction |
| Armour | Round aluminium wires | Single layer of aluminium wires; exact lay and bonding remain drawing-controlled. | Supplied construction |
| Outer sheath | LSZH | Low-smoke, halogen-free sheath claim is retained from the source construction. | Supplied construction |
| Source page 1 | Generated 8/4/26 — www.nexans.com.tr — Page 1 / 2 | Preserved source metadata. | Supplied metadata |
| Source page 2 | YXC7Z1Y2Z1 20.3/35 kV — Generated 8/4/26 — www.nexans.com.tr — Page 2 / 2 | Preserved source metadata. | Supplied metadata |
| Source disclaimer | All drawings, designs, specifications, plans and particulars of weights, size and dimensions contained in the technical or commercial documentation of Nexans is indicative only and shall not be binding on Nexans or be treated as constituting a representation on the part of Nexans. | Use the controlled Feichun release for procurement and installation decisions. | Supplied metadata |
5. Complete technical matrix — YXC7Z1Y2Z1 20.3/35 kV
The source provides two conductor areas and three product references. The duplicate 240 mm² rows are not collapsed because the supplied references differ.
| Cross section [mm²] | Nom. outer diam. [mm] | Approx. weight [kg/km] | Max. DC Resist. Cond. 20 °C [Ohm/km] | Perm. current in air 30 °C — flat [A] | Perm. current buried 20 °C — trefoil [A] | Short-circuit conductor 1 s [kA] | Nexans Ref. |
|---|---|---|---|---|---|---|---|
| 95 | 45.0 | 2700 | 0.193 | 434 | 285 | 13.6 | 10564587 |
| 240 | 53.0 | 4530 | 0.0754 | 641 | 469 | 34.3 | 10563510 |
| 240 | 53.0 | 4530 | 0.0754 | 641 | 469 | 34.3 | 10567304 |
The user-supplied matrix contains no screen short-circuit field, conductor diameter, sheath diameter, mass for alternative constructions or screen cross-section. Those values are not inserted from another cable.
6. Derived installation checks
Derived values use only the supplied nominal outer diameter, weight and 12 (xD) laying factor. They are arithmetic screening values, not additional manufacturer specifications.
| Cross section | Source OD | Laying factor | Derived radius | Approx. mass per 100 m |
|---|---|---|---|---|
| 95 mm² | 45.0 mm | 12 × D | 540.0 mm | 270.0 kg/100 m |
| 240 mm² | 53.0 mm | 12 × D | 636.0 mm | 453.0 kg/100 m |
7. Layer-by-layer cross-section
The diagram is a conceptual engineering reconstruction. It distinguishes the concentric copper screen, LSZH layers and round aluminium-wire armour; exact dimensions remain controlled-drawing fields.
8. Electrical, screen and armour system
Electric-field continuity
Semiconducting screens, XLPE and the copper screen must remain continuous through joints and terminations.
Semiconducting screens, XLPE and the copper screen must remain continuous through joints and terminations.
Screen bonding
Bonding depends on system earthing, induced voltage, earth-fault duty, route length and local rules.
Bonding depends on system earthing, induced voltage, earth-fault duty, route length and local rules.
Aluminium armour
Round aluminium wires are mechanically distinct from the copper screen; armour continuity and bonding require separate review.
Round aluminium wires are mechanically distinct from the copper screen; armour continuity and bonding require separate review.
High-voltage accessories
Use the exact insulation diameter, screen preparation, LSZH sheath and armour-entry dimensions for 20.3/35 kV accessories.
Use the exact insulation diameter, screen preparation, LSZH sheath and armour-entry dimensions for 20.3/35 kV accessories.
9. Thermal, voltage-drop and short-circuit design
Engineering closure matrix
| Check | Known source basis | Engineering implication | Release action |
|---|---|---|---|
| System voltage | 20.3 / 35 kV | High-voltage insulation coordination, joints, terminations and protection must match. | Confirm the project insulation and test file. |
| 95 mm² row | 45.0 mm; 2700 kg/km; 434 A air flat; 285 A buried trefoil; Ref 10564587 | Use only under the stated formation bases and route corrections. | Verify route thermal and accessory design. |
| 240 mm² rows | 53.0 mm; 4530 kg/km; 641 A air flat; 469 A buried trefoil; Refs 10563510 / 10567304 | Two references are preserved as separate rows; do not merge them without controlled confirmation. | Identify the exact ordered reference. |
| Bending | 12 (xD) | 540.0 mm for 45.0 mm OD and 636.0 mm for 53.0 mm OD are screening radii. | Confirm drum, roller, entry and accessory limits. |
| Conductor fault | 13.6 kA for 95 mm²; 34.3 kA for 240 mm², 1 s | Coordinate protection I²t with conductor and accessory capability. | Complete the protection study. |
| Screen fault | Not supplied in the source matrix | Metallic screen construction is stated, but no numerical screen short-circuit value is supplied. | Close screen bonding and I²t design. |
| Fire | IEC 60332-3-24 Cat. C | Do not infer Eca, Cca, B2ca or s/d/a qualifiers. | Match the exact product declaration. |
| Dynamic service | Not stated | 12×D is a laying factor, not reeling, festoon or drag-chain qualification. | Use a dedicated dynamic cable family. |
10. Fire and LSZH performance boundary
Source-listed flame reference
IEC 60332-3-24 Cat. C is retained exactly from the source. It is a test reference, not a complete CPR declaration.
IEC 60332-3-24 Cat. C is retained exactly from the source. It is a test reference, not a complete CPR declaration.
LSZH construction
LSZH separation and outer sheaths are explicit construction fields. Confirm smoke, acidity, corrosivity and product declaration for the ordered reference.
LSZH separation and outer sheaths are explicit construction fields. Confirm smoke, acidity, corrosivity and product declaration for the ordered reference.
Project fire strategy
Review cable grouping, fire stopping, penetrations, ventilation, emergency egress and local requirements with the current product file.
Review cable grouping, fire stopping, penetrations, ventilation, emergency egress and local requirements with the current product file.
Do not overclaim: the supplied record does not state Eca, Cca, B2ca or s/d/a qualifiers.
11. Fixed-route applications
Energy-network feeder
The source identifies low dielectric losses and networks with sudden load changes. Final selection needs load profile, conductor area, protection and route design.
The source identifies low dielectric losses and networks with sudden load changes. Final selection needs load profile, conductor area, protection and route design.
Underground route
Review soil thermal resistance, depth, water exposure, drainage, backfill, mechanical impact and joint access.
Review soil thermal resistance, depth, water exposure, drainage, backfill, mechanical impact and joint access.
Duct installation
Check duct fill, pulling load, sidewall pressure, entry geometry, bends, heat dissipation, water and installation temperature.
Check duct fill, pulling load, sidewall pressure, entry geometry, bends, heat dissipation, water and installation temperature.
Residential / industrial area
Review public access, fire strategy, induced voltage, earthing, support spacing, maintenance clearance and the consequences of LSZH sheath selection.
Review public access, fire strategy, induced voltage, earthing, support spacing, maintenance clearance and the consequences of LSZH sheath selection.
12. Handling and termination
- Confirm the exact product reference, conductor area, diameter, mass, drum label and end seals before unloading.
- Use 12×D only as the supplied laying factor: 540.0 mm for the 95 mm² row and 636.0 mm for the 240 mm² rows.
- Protect the LSZH sheath and aluminium wires from crushing, uncontrolled twist, sharp entries and local abrasion.
- Prepare the 20.3/35 kV termination with the correct screen, XLPE stress-control, sheath and armour-entry dimensions.
- Verify conductor resistance, screen continuity, armour continuity/bonding, insulation/sheath tests and project-specified MV tests before energisation.
13. Selection comparison for engineers
Source-based selection comparison
| Requirement | Source reference | What must be verified | Engineering decision |
|---|---|---|---|
| 20.3/35 kV fixed feeder | Cu / XLPE / copper screen / LSZH / round Al-wire armour / LSZH | Confirm system earthing, formation, bonding, protection and accessories. | Candidate after exact-size release. |
| 95 mm² | 45.0 mm OD; 2700 kg/km; 434 A air flat; 285 A buried trefoil | Check voltage drop, thermal correction, fault duty, pulling and termination. | Use Ref 10564587. |
| 240 mm² | 53.0 mm OD; 4530 kg/km; 641 A air flat; 469 A buried trefoil | Three source references are preserved; identify the exact row on the order. | Use Ref 10563510 or 10567304 as confirmed. |
| LSZH fixed route | LSZH separation and outer sheath; IEC 60332-3 Cat. C | Confirm current fire declaration, smoke, corrosive-gas and route requirements. | Do not infer CPR class. |
| Reeling / festoon / drag chain | 12×D laying factor only | Cycles, torsion, acceleration and dynamic bend radius are not supplied. | Select a dedicated dynamic cable. |
14. Failure-mode controls
Reference confusion: the 240 mm² row has three supplied Nexans references; do not collapse them without confirmation.
Screen assumption: a copper screen construction is not the same as a published screen short-circuit current.
Formation substitution: 641 A air-flat and 469 A buried-trefoil values cannot be transferred to other formations.
Radius misuse: 12×D is a laying factor, not a dynamic-service qualification.
Fire substitution: IEC 60332-3 Cat. C and LSZH do not automatically establish a CPR class.
Dynamic misuse: fixed-route high-voltage cable is not automatically suitable for reeling or energy chains.
15. Feichun 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.
Configuration-specific certification
Certification capability does not make every YXC7Z1Y2Z1 size automatically TSEK, IECEx, ATEX, EAC or fire-certified. The exact conductor, screen, LSZH compounds, aluminium armour, voltage class and documentation must match.
Certification capability does not make every YXC7Z1Y2Z1 size automatically TSEK, IECEx, ATEX, EAC or fire-certified. The exact conductor, screen, LSZH compounds, aluminium armour, voltage class and documentation must match.
Feichun release dossier
Confirm conductor flexibility, conductor and screen area, DCR, outer diameter, mass, current ratings, short-circuit values, screen bonding, armour treatment, bending instructions and accessory compatibility.
Confirm conductor flexibility, conductor and screen area, DCR, outer diameter, mass, current ratings, short-circuit values, screen bonding, armour treatment, bending instructions and accessory compatibility.
High-voltage accessory control
For 20.3/35 kV service, the termination and joint system must be selected with the exact insulation diameter, screen preparation, sheath, armour and test requirements.
For 20.3/35 kV service, the termination and joint system must be selected with the exact insulation diameter, screen preparation, sheath, armour and test requirements.
Engineering value
Feichun can develop the copper / XLPE / copper-screen / LSZH / aluminium-wire-armoured architecture around the actual route, protection system and market documentation without copying incomplete data.
Feichun can develop the copper / XLPE / copper-screen / LSZH / aluminium-wire-armoured architecture around the actual route, protection system and market documentation without copying incomplete data.
Release condition: this article does not invent a TSEK certificate number, screen short-circuit current, CPR class, dynamic rating, product test report or alternative conductor size.
16. Source and revision audit
Source and revision audit
| Source | Reference / use | Status and limitation |
|---|---|---|
| Nexans family page | https://www.nexans.com.tr/en/products/xlpe-insulated-medium-voltage/copper-conductor/YXC7Z1Y2Z136402.html | Confirms YXC7Z1Y2Z1 20.3/35 kV, TSEK, LSZH construction, 95 and 240 mm² family rows and three product references. |
| Nexans 95 mm² page | https://www.nexans.com.tr/tr/products/xlpe-insulated-medium-voltage/copper-conductor/YXC7Z1Y2Z136402/product~10564587~.html | Official cross-check for Ref 10564587 and the 95 mm² row. |
| Nexans 240 mm² pages | https://www.nexans.com.tr/tr/products/xlpe-insulated-medium-voltage/copper-conductor/YXC7Z1Y2Z136402/product~10563510~.html / https://www.nexans.com.tr/en/products/xlpe-insulated-medium-voltage/copper-conductor/YXC7Z1Y2Z136402/product~10567304~.html | Official cross-check for the two 240 mm² references; they must not be silently merged. |
| Nexans family PDF | https://www.nexans.com.tr/.rest/catalog/v1/family/pdf/36402/YXC7Z1Y2Z1-20-3-35-kV | Official family PDF route; preserve the supplied 8/4/26 two-page record as the primary article source. |
| IEC 60332-3-24:2018 | https://webstore.iec.ch/en/publication/32826 | Flame-spread context for Category C; not a CPR declaration. |
| IEC 60502-2 | https://webstore.iec.ch/en/publication/95394 | General fixed-installation MV reference only; the supplied product standard is National TSEK. |
| User-supplied record | Primary source | All values, construction, page labels, dashes and duplicate 240 mm² references are preserved. |
This article is for preliminary engineering, technical search and comparison. The final Feichun YXC7Z1Y2Z1 20.3/35 kV release must be checked against the current product data sheet, National TSEK basis, exact product row, current ratings, screen and armour design, fire documentation, accessories, installation method and local authority requirements.
