FEICHUN CABLEN2XS(FL)2Y 12/20 kVCU / XLPE / PERADIAL + LONGITUDINAL WATER BLOCKINGIEC 60502-2
Feichun N2XS(FL)2Y 12/20 kV — Water-Blocked XLPE Medium-Voltage Cable for Fixed Routes
A practical English engineering guide to the N2XS(FL)2Y single-core cable reference. The supplied record specifies copper, XLPE, water swelling tape, copper wires with counter helix of copper tape, longitudinal aluminium foil sticking to protective PE, radial waterproofing and longitudinal water tightness. It does not supply a conductor area or numerical electrical matrix, so those fields remain open for controlled Feichun release.
Voltage class
12/20 kV
Single-core XLPE MV platform.
Water architecture
2-axis
Radial and longitudinal protection are declared.
Outer system
Al foil + PE
Source wording preserved; no armour is added.
Data discipline
No invented size
Cross-section, OD, mass and ratings are not supplied.
Engineering contents
- Product position
- Designation and construction
- Standards and evidence
- Complete source specification
- Available / missing data matrix
- Cross-section and water ingress
- Electrical and thermal design
- Fixed route applications
- Installation and accessories
- Selection and failure controls
- Feichun certification
- Source audit
1. Engineering position
N2XS(FL)2Y 12/20 kV is a single-core, XLPE-insulated copper-conductor cable with PE outer protection and a declared radial and longitudinal water-blocking construction. The supplied application covers energy networks with sudden load changes, residential or industrial areas, underground routes and ducts. The engineering distinction is between radial ingress control, longitudinal propagation control, electrical screening and end/joint sealing.
Electrical platform
Copper, semi-conducting conductor screen, XLPE insulation and semi-conducting insulation screen form the MV electric-field system. Accessory preparation must follow released dimensions.
Copper, semi-conducting conductor screen, XLPE insulation and semi-conducting insulation screen form the MV electric-field system. Accessory preparation must follow released dimensions.
Water platform
Water swelling tape, metallic screen components and the longitudinal aluminium foil / PE sheath arrangement are read as one system. “Yes” characteristics are preserved, but no test result is invented.
Water swelling tape, metallic screen components and the longitudinal aluminium foil / PE sheath arrangement are read as one system. “Yes” characteristics are preserved, but no test result is invented.
Port engineering relevance
Evaluate it as a fixed shore-side feeder to substations, ducts and industrial loads. STS, RTG, RMG, reel, festoon and drag-chain routes require a dedicated dynamic design.
Evaluate it as a fixed shore-side feeder to substations, ducts and industrial loads. STS, RTG, RMG, reel, festoon and drag-chain routes require a dedicated dynamic design.
Data boundary
The record contains no conductor area, OD, mass, DCR, reactance, capacitance, ampacity, voltage drop or bending factor. These cannot be reconstructed safely.
The record contains no conductor area, OD, mass, DCR, reactance, capacitance, ampacity, voltage drop or bending factor. These cannot be reconstructed safely.
2. Designation and construction
Designation reading
| Field | Engineering reading | Status |
|---|---|---|
| N2XS(FL)2Y | Read the complete designation; do not infer unlisted armour or flexibility. | Source designation |
| 12/20 kV | Rated voltage Uo/U; Um is not separately supplied in parentheses. | Source designation |
| Cu / XLPE | Copper conductor and XLPE insulation are explicit. | Source construction |
| Water blocking | Radial waterproof and longitudinally watertight are both Yes. | Source characteristics |
| Aluminium foil + PE | Longitudinal foil sticking to protective PE; no armour claim. | Source construction |
| Fixed installation | Residential, industrial, underground and duct routes are listed. | Source application |
Supplied construction sequence
1. Conductor: Copper
2. Conductor screen:Semi-conducting compound (XLPE)
3. Insulation:XLPE
4. Insulation screen:Semi-conducting compound (XLPE) + water swelling tape + copper wires with counter helix of copper tape
5. Outer sheath: Longitudinal Aluminium foil sticking to protective sheath PE
1. Conductor: Copper
2. Conductor screen:Semi-conducting compound (XLPE)
3. Insulation:XLPE
4. Insulation screen:Semi-conducting compound (XLPE) + water swelling tape + copper wires with counter helix of copper tape
5. Outer sheath: Longitudinal Aluminium foil sticking to protective sheath PE
Deliberately not claimed
No AWA, SWA, steel armour, continuous-flex rating, reeling rating, mining-trailing rating, CPR class, screen fault-current value or numerical water-blocking test result is added.
No AWA, SWA, steel armour, continuous-flex rating, reeling rating, mining-trailing rating, CPR class, screen fault-current value or numerical water-blocking test result is added.
3. Standards and evidence boundary
Standards and declared characteristics
| Reference / characteristic | Engineering meaning | Evidence boundary |
|---|---|---|
| IEC 60502-2 | Product standard listed by the source. | Confirm adopted edition and exact Feichun file. |
| IEC 60754-1; IEC 60754-2 | Halogen-free references in the characteristics. | No numerical gas result is supplied. |
| Radial waterproof: Yes | Declared radial water characteristic. | Test report and acceptance criteria are not supplied. |
| Longitudinally watertight: Yes | Declared longitudinal characteristic. | End seals and joints remain separate controls. |
| U.V resistance: Yes | UV resistance is stated. | Confirm compound and exposure basis. |
| Not stated | No flame class, smoke value, CPR class, dimensions or ratings are supplied. | Do not import from another product. |
The official IEC 60502-2 record describes extruded-insulation MV cables for fixed installations in the 6–30 kV range and discusses radial water ingress and longitudinal water barriers. It also identifies special mining, nuclear, submarine and shipboard applications as outside the general scope. A port shore-side feeder and a moving crane cable are different engineering cases.
4. Complete source specification
| Specification field | Source value | Engineering interpretation | Data status |
|---|---|---|---|
| Product designation | N2XS(FL)2Y 12/20 kV | Single-core XLPE MV cable with copper conductor, PE outer sheath and radial plus longitudinal water blocking. | Supplied source |
| Product description | N2XS(FL)2Y 12/20 kV XLPE insulated single core cables with copper conductor and PE outer sheath with radial and longitudinal water blocking | The water-blocking construction is the defining route-reliability feature. | Supplied source |
| Product standard | IEC 60502-2 | Confirm the current adopted edition and Feichun conformity route. | Supplied source |
| Conductor material | Copper | Phase conductor material stated in the source. | Supplied source |
| Conductor flexibility | – | No flexibility class is supplied; do not assume continuous-flex or reeling performance. | Supplied source — not supplied |
| Number of cores | 1 | Single-core system; formation, screen bonding and induced-current control are installation inputs. | Supplied source |
| Conductor cross-section | – mm² | No area is supplied; ampacity and geometry cannot be calculated from this record. | Supplied source — not supplied |
| Rated Voltage Uo/U (Um) | 12/20 kV | Voltage class for insulation coordination and MV accessories. | Supplied source |
| Operating temperature, range | -20 … 90 °C | Stated usage range; the complete installation still governs. | Supplied source |
| Max. conductor temperature in service | 90 °C | Continuous conductor service temperature. | Supplied source |
| Short-circuit max. conductor temperature | 250 °C | Use with protection clearing time and complete I²t design. | Supplied source |
| Longitudinally watertight | Yes | Limits longitudinal water propagation; ends, joints and terminations still need sealing. | Supplied source |
| Radial waterproof | Yes | Radial water protection is explicitly stated; test basis must be verified. | Supplied source |
| Longitudinal water tightness | Yes | Repeated page-two characteristic, preserved as supplied. | Supplied source |
| Radial water tightness | Yes | Repeated page-two characteristic, preserved as supplied. | Supplied source |
| U.V resistance | Yes | UV resistance stated; confirm PE compound and exposure basis. | Supplied source |
| Halogen free | IEC 60754-1; IEC 60754-2 | Fire-gas references stated; no separate flame or smoke value supplied. | Supplied source |
| Conductor screen | Semi-conducting compound (XLPE) | Electric-field transition from conductor to XLPE. | Supplied source |
| Insulation | XLPE | Solid dielectric layer for the 12/20 kV class. | Supplied source |
| Insulation screen / water-blocking build | Semi-conducting compound (XLPE) + water swelling tape + copper wires with counter helix of copper tape | Exact layer dimensions and lay are controlled-drawing fields. | Supplied source |
| Outer sheath | Longitudinal Aluminium foil sticking to protective sheath PE | Do not re-label this wording as AWA, SWA or conventional armour. | 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. | Supports fixed energy-network routes; no dynamic claim is added. | Supplied source |
| Generated / source record | Generated 8/4/26 — www.nexans.com.tr — Page 1 / 2 | Preserved source metadata. | Supplied source metadata |
| Source continuation | N2XS(FL)2Y 12/20 kV — Page 2 / 2 | Preserved source metadata. | Supplied source metadata |
Source metadata preserved: Generated 8/4/26 · www.nexans.com.tr · Page 1 / 2 and Page 2 / 2. The supplied disclaimer states that drawings, designs, specifications, plans, weights, sizes and dimensions are indicative only and not binding representations by Nexans.
5. Available versus not-supplied data
Data closure matrix
| Field | Current record | Engineering action |
|---|---|---|
| Conductor cross-section | – mm² | Not calculable from the supplied record. |
| Nominal outer diameter | Not supplied | Needed for radius, clearance, gland and duct-fill checks. |
| Approximate weight | Not supplied | Needed for drum, lifting, supports and pulling. |
| Maximum DC resistance at 20 °C | Not supplied | Needed for losses and voltage drop. |
| Reactance / capacitance | Not supplied | Needed for voltage-drop and charging-current studies. |
| Permissible current rating | Not supplied | Calculate for actual formation, ambient, soil and grouping. |
| Conductor / screen short-circuit current | Only 250 °C conductor limit; screen duty not supplied | Close the complete I²t chain before release. |
| Bending factor / pulling limit | Not supplied | Use the controlled Feichun method statement. |
Procurement rule: because the source says
Conductor cross-section - mm², no numerical product matrix is inserted. A released Feichun data sheet must add exact area, OD, mass, DCR, reactance, capacitance, voltage drop, current ratings, fault duty, bending factor and accessory limits.6. Cross-section and water-blocking system
The drawing is conceptual and not to scale. The aluminium foil is labelled as foil sticking to the protective PE sheath; it is not silently converted into an armour designation.
Radial water path
External water can approach through a damaged outer system. Radial waterproofing must be supported by the actual sheath, foil, screen-region materials and test method.
External water can approach through a damaged outer system. Radial waterproofing must be supported by the actual sheath, foil, screen-region materials and test method.
Longitudinal water path
Water can travel along interfaces over cable length. Longitudinal water tightness limits propagation but cannot seal an open end or poorly prepared joint.
Water can travel along interfaces over cable length. Longitudinal water tightness limits propagation but cannot seal an open end or poorly prepared joint.
End treatment
Seal both ends during transport, storage and installation. Apply approved joint and termination kits, preserve screen continuity and inspect the PE/foil system.
Seal both ends during transport, storage and installation. Apply approved joint and termination kits, preserve screen continuity and inspect the PE/foil system.
Route drainage
Water-blocking is not drainage. Duct slope, sump operation, groundwater level and maintenance access remain design responsibilities.
Water-blocking is not drainage. Duct slope, sump operation, groundwater level and maintenance access remain design responsibilities.
7. Electrical, thermal and fault design
Voltage
Use 12/20 kV for insulation coordination, system earthing, MV terminations and joints. No size-specific capacitance is supplied.
Use 12/20 kV for insulation coordination, system earthing, MV terminations and joints. No size-specific capacitance is supplied.
Temperature
The record gives -20 … 90 °C, 90 °C service conductor temperature and 250 °C maximum conductor temperature under short circuit. Actual route and accessory limits govern.
The record gives -20 … 90 °C, 90 °C service conductor temperature and 250 °C maximum conductor temperature under short circuit. Actual route and accessory limits govern.
Current rating
No ampacity is supplied. Calculate by formation, soil thermal resistivity, depth, grouping, duct thermal resistance, screen losses, ambient and load cycle.
No ampacity is supplied. Calculate by formation, soil thermal resistivity, depth, grouping, duct thermal resistance, screen losses, ambient and load cycle.
Screen system
Copper wires with counter helix of copper tape are an electrical screen construction. Bonding, induced-current loss, earth-fault duty, touch voltage and accessory compatibility must be closed.
Copper wires with counter helix of copper tape are an electrical screen construction. Bonding, induced-current loss, earth-fault duty, touch voltage and accessory compatibility must be closed.
Voltage-drop screening: ΔU ≈ √3 × I × (R_ac × cos φ + X × sin φ) × LThermal acceptance: I_load ≤ I_z(actual formation, ambient, soil, grouping, screen losses, accessories)Fault coordination: I²t_protection ≤ I²t_conductor / screen / joint / termination systemNo numerical result is calculated because area, DCR, reactance, formation and ratings are not supplied.
Engineering closure checks
| Check | Known source basis | Required decision |
|---|---|---|
| Voltage coordination | 12/20 kV | Confirm earthing, accessories, joints and insulation coordination. |
| Thermal loading | -20 … 90 °C; 90 °C service | Apply actual ambient, soil, duct, grouping and screen losses. |
| Short circuit | 250 °C maximum conductor temperature | Use protection clearing time and accessory capability. |
| Water ingress | Radial Yes; longitudinal Yes | Inspect sheath, seal ends, approve joints and verify drainage. |
| Environment | UV resistance Yes; PE sheath | Check salt, chemicals, rodents, impact and fire compartments. |
8. Fixed applications and port-engineering logic
Application comparison
| Scenario | Fit to current record | Selection action |
|---|---|---|
| Wet underground / duct | Strong fit to the stated construction | Seal ends and joints; design drainage and thermal route. |
| Industrial fixed feeder | Matches stated energy-network application | Complete load, fault, voltage-drop and accessory studies. |
| Port shore-side feeder | Potentially suitable for fixed MV infrastructure | Review flooding, salt, UV, rodents, impact and fire. |
| STS / RTG moving route | Not established by this record | Use dedicated reeling, festoon or dynamic crane cable. |
| Shipboard / submarine | Not established by this fixed-installation record | Use applicable special standard and type tests. |
Underground residential or industrial route
Matches the stated application. Confirm thermal design, route length, joints, drainage and fire strategy.
Matches the stated application. Confirm thermal design, route length, joints, drainage and fire strategy.
Port substation feeder
Evaluate as fixed shore-side MV infrastructure after flooding, salt, UV, rodents, impact and maintenance review.
Evaluate as fixed shore-side MV infrastructure after flooding, salt, UV, rodents, impact and maintenance review.
Wet duct
The declared water characteristics are relevant, but end seals and duct drainage remain mandatory.
The declared water characteristics are relevant, but end seals and duct drainage remain mandatory.
Moving crane equipment
Do not assume fixed-installation performance tolerates cyclic bending, torsion, reeling or festoon travel.
Do not assume fixed-installation performance tolerates cyclic bending, torsion, reeling or festoon travel.
9. Installation, handling and accessories
- Verify product code, voltage, exact area, OD, mass, drum label and end seals before unloading.
- Use only the released bending factor, pulling limit, sidewall-pressure limit and roller arrangement; none is supplied here.
- Keep the PE/foil outer system free from cuts, crushing, uncontrolled twist and abrasion.
- Seal ends immediately; water blocking cannot compensate for open ends or contaminated interfaces.
- Use the approved 12/20 kV MV joint and termination system; control semicon removal, XLPE preparation, screen bonding and stress control.
- Complete conductor resistance, screen continuity, sheath integrity and project-specified MV tests before energisation.
Accessory and installation release checklist
| Item | Why it matters | Status |
|---|---|---|
| Cable end seal | Stops water entering during storage, pulling and joint preparation. | Required |
| MV joint / termination | Must match 12/20 kV XLPE screen and water-blocking construction. | Exact kit not supplied |
| Screen bonding | Controls fault path, induced losses and touch voltage. | Design required |
| Duct / route | Thermal and water environment determines service performance. | Project calculation required |
| Fire / environmental file | Matches PE sheath, UV resistance, halogen-free claim and site rules. | Product-specific evidence required |
10. Selection gate and failure controls
Wrong-size substitution: filling the blank conductor area or OD from another cable changes ampacity, radius, mass, screen losses and accessory dimensions.
Water entry: an open end, damaged foil/PE system or poorly sealed joint can defeat route-level protection.
Screen overload: the source does not give screen short-circuit current; conductor temperature alone is incomplete.
Fire overclaim: halogen-free references do not automatically establish CPR, smoke or flame subclasses.
Dynamic misuse: fixed MV cable should not be used in reel, festoon, drag-chain or crane-travel service without a dedicated specification.
Accessory mismatch: a 12/20 kV cable is only as reliable as the compatible stress-control and sealing system.
11. Feichun Cable certification and project assurance
Engineered for maximum safety in demanding environments, our 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 mean every N2XS(FL)2Y size automatically carries every certificate or declaration. Exact construction, market, size, voltage, test report and declaration must match the released item.
Certification capability does not mean every N2XS(FL)2Y size automatically carries every certificate or declaration. Exact construction, market, size, voltage, test report and declaration must match the released item.
Feichun technical release
Close area, OD, mass, DCR, reactance, capacitance, ampacity, voltage drop, conductor/screen fault duty, water-blocking test basis, PE compound, foil construction, accessories and fire/environmental documentation.
Close area, OD, mass, DCR, reactance, capacitance, ampacity, voltage drop, conductor/screen fault duty, water-blocking test basis, PE compound, foil construction, accessories and fire/environmental documentation.
Engineering value
Feichun can develop the water-blocked architecture as a project-controlled MV system for fixed underground, duct and industrial routes.
Feichun can develop the water-blocked architecture as a project-controlled MV system for fixed underground, duct and industrial routes.
This article does not invent certificate numbers, notified bodies, screen fault-current values, drum dimensions, water-blocking test results or a product-specific Declaration of Performance.
12. Source map and audit
Source and revision audit
| Source | Use | Status / limitation |
|---|---|---|
| User-supplied record | Primary source for current values, wording, metadata and dashes. | Preserved without filling missing numbers. |
| Nexans family PDF | https://www.nexans.com.tr/.rest/catalog/v1/family/pdf/37097/N2XS-FL-2Y-1X500-50-12-20-kV | Exact family PDF cross-check. |
| Nexans family page | https://www.nexans.com.tr/en/products/xlpe-insulated-medium-voltage/copper-conductor/N2XS%28FL%292Y37097.html | Secondary cross-check; current body shows a construction discrepancy versus supplied copper-conductor data and does not overwrite it. |
| IEC 60502-2 official record | https://webstore.iec.ch/en/publication/95394 | Fixed-installation MV scope and water-ingress context; project adoption remains to be confirmed. |
| Feichun release file | To be assigned | Must contain exact size, ratings, tests, declarations and accessory approvals. |
Supplied disclaimer preserved in meaning: “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.”
Final procurement and energisation require the current Feichun technical file, exact size matrix, water-blocking evidence, IEC 60502-2 conformity route, MV accessories, thermal calculation, fire/environmental documentation and local authority approval.
