50mm2 Copper 5 Core Armoured Cable XLPE For Indoor Outdoor Power Distribution
Product Summary
Product Details
50mm2 5 core armoured cable
,Copper 5 core armoured cable
,pvc sheathed XLPE
Product Description
ZR-YJV 5 Core 50mm² Flame Retardant Copper Cable for Indoor & Outdoor Power Distribution
Cable Designation & Meaning
|
Code |
Meaning |
|---|---|
|
ZR |
Legacy prefix for flame retardant; under GB/T 19666-2019 it defaults to Class C (modern equivalent: ZC). |
|
YJ |
XLPE (cross-linked polyethylene) insulation |
|
V |
PVC outer sheath — flame-retardant grade, contains halogen (Cl) |
|
0.6/1 kV |
Rated voltage U₀/U = 600/1000 V; Uₘ = 1.2 kV |
|
5×50 mm² |
Five cores, nominal copper conductor area 50 mm² per core |
ZR-YJV 5×50 mm² — Cable Specification & Engineering Data
1. Overview & Ratings. ZR-YJV 5×50 — flame-retarding five-core cable, five 50 mm² Cu conductors, XLPE insulation, one ST2 PVC sheath, rated 0.6/1 kV (Um = 1.2 kV), 50 Hz; built and proof-tested per GB/T 12706.1 / IEC 60502-1, stranding per GB/T 3956, ZC fire class per GB/T 19666. ≈ 34.2 mm, ≈ 2696 kg/km (Al ≈ 1183), 100 m coils/drums.
2. Construction Stack. Conductor → outer sheath:
| Layer | Build | Wall | Diameter |
|---|---|---|---|
| Conductor (×5) | Annealed Cu, Class 2, 10 × 2.52 mm (1+6+3) each | — | ≈ 7.6 mm |
| Insulation (×5) | XLPE | 1.4 mm | ≈ 10.4 mm |
| Lay-up | Five cores (pentagonal ring) + filler + binder tape | — | ≈ 30.2 mm (calc.) |
| Sheath | Flame-retarded PVC, ST2, black | 2.0 mm | ≈ 34.2 mm (Mingda five-core) |
3. Electrical Ratings. R ≤ 0.387 Ω/km @ 20 °C; routine 3.5 kV / 5 min; insulation resistance ≥ 36.7 MΩ·km; XLPE volume resistivity ≥ 1×10¹² Ω·cm; capacitance ≤ 0.45 μF/km. Reference ampacity (five cores loaded) ≈ 160 A air / 185 A buried @ 25 °C — Mingda five-core unarmored table.
|
Parameter |
Value |
Note |
|---|---|---|
|
Rated voltage U₀/U |
0.6 / 1 kV |
Uₘ = 1.2 kV |
|
Test voltage AC (5 min) |
3.5 kV |
Routine |
|
Type-test voltage |
4.0 kV |
IEC 60502-1 |
|
DC resistance @20 °C (Class 2 Cu, per core) |
≤ 0.387 Ω/km |
GB/T 3956 max |
|
AC resistance @90 °C (est.) |
≈ 0.503 Ω/km |
per core |
|
Current rating in air (30 °C, single circuit, 5-core) |
≈ 125–145 A |
common catalogue value |
|
Current rating in air (design) |
≈ 135 A |
apply grouping + ambient correction |
|
Direct buried (20–25 °C, soil 1.0–1.2 K·m/W, 0.7 m) |
≈ 145–165 A |
common catalogue 150–158 A |
|
Design buried rating |
≈ 153 A |
soil thermal resistivity correction required |
|
Short-circuit current (1 s, Cu, 250 °C, per core) |
≈ 5.0 kA |
reference |
|
Frequency |
50/60 Hz AC |
— |
4. Cable Parameters & Test Parameters
| ZR-YJV 5×50 mm² — Test / Verification Parameters (per GB/T 12706.1 & IEC 60502-1) | ||||
| Stage | Test Item | Method / Standard | Acceptance Criterion | Notes |
| Routine | Conductor DC resistance | GB/T 3956 (IEC 60228) | ≤ 0.387 Ω/km @ 20 °C (per core) | Every production length |
| Routine | Power-frequency withstand voltage | GB/T 12706.1 / IEC 60502-1 | 3.5 kV AC / 5 min, no breakdown | Conductor-to-earth/water |
| Routine | Construction check | GB/T 2951 | Ins. ≥ 1.4 mm; sheath ≥ 2.0 mm; OD within tolerance | Thickness & diameter |
| Sample | Hot set test — XLPE | GB/T 12706.1 §16.3.13 / GB/T 2951.11 | 200 ± 3 °C, 15 min, 0.2 MPa: load elongation ≤ 175 %; permanent ≤ 15 % | Cross-linking degree |
| Sample | Conductor construction & diameter | GB/T 3956 | Class 2; 10 × 2.52 mm; Ø ≈ 7.6 mm | Per batch |
| Type | Single-cable flame test | GB/T 18380.12 | No flame spread to top reference | ZR property |
| Type | Bunched flame test — class C | GB/T 18380.35 | Char ≤ 2.5 m; 20 min; ≥ 1.5 L/m | ZC class |
| Type | Bending test | GB/T 12706.1 | No damage on specified mandrel | Multi-core rule |
| Post-install | DC withstand test | Q/GDW 13244.1-2018 | 2.4 kV DC / 15 min, no breakdown | New installations |
| Optional | Insulation resistance @ 20 °C | Factory method | ≥ 36.7 MΩ·km | Not routine in GB/T 12706.1 |
| Optional | XLPE volume resistivity | Material test | ≥ 1 × 10¹² Ω·cm | Material reference |
5.Cable Cross Section Structure
| ZR-YJV 5×50 mm² — Cable Cross-Section Structure (Schematic) | |||||
| Five-core construction from conductor to outer sheath · nominal values per GB/T 12706.1 / IEC 60502-1 · not to exact scale | |||||
| No. | Layer | Material / Construction | Nominal Thickness (mm) | Diameter (mm) | Function / Remarks |
| 1 | Conductor (Cu) × 5 | Annealed copper, Class 2 stranded — 10 × 2.52 mm per core (10/2.52, 1+6+3), nominal 50 mm² per core | — | ≈ 7.6 (Ø per core) | Current-carrying element; max DC resistance ≤ 0.387 Ω/km @ 20 °C (per core) |
| 2 | Insulation (XLPE) × 5 | Cross-linked polyethylene | 1.4 | ≈ 10.4 (Ø per core, over insulation) | Dielectric barrier; rated 90 °C continuous; withstands 3.5 kV / 5 min |
| 3 | Core lay-up | Five insulated cores laid up in a pentagonal ring around dry filler; binder tape | — | ≈ 30.2 (Ø over lay-up, calc.) | Round assembly; the 5th core is the PE (earthing) core |
| 4 | Outer sheath (PVC) | Flame-retardant PVC, ST2 type, black | 2 | ≈ 34.2 (Ø overall, Mingda five-core) | Mechanical & moisture protection; flame retardance ZC (ZR) per GB/T 19666 |
| Key Dimensions & Properties | |||||
| Overall diameter | ≈ 34.2 | mm | Mingda five-core unarmored table | ||
| Approx. cable weight | ≈ 2696 | kg/km | Mingda 2696 (Al ≈ 1183) | ||
| Rated voltage | 0.6/1 | kV | AC 50 Hz; max system voltage Um = 1.2 kV | ||
| Max conductor temperature | 90 / 250 | °C | Continuous / short-circuit (≤ 5 s) | ||
| Min. bending radius (multi-core) | ≥ 15 × OD | — | OD = actual cable diameter | ||
| Flame-retardant class | ZC (ZR) | — | GB/T 19666 | ||
| Schematic — not to exact scale. Nominal values for reference; confirm against factory test certificate. | |||||
6. Thermal & Fire. 90 °C continuous, 250 °C short-circuit (≤ 5 s); −20~+45 °C ambient, ≥ 0 °C laying; ZC per GB/T 19666 — GB/T 18380.12 single-burn + GB/T 18380.35 class-C bunched (char ≤ 2.5 m); PVC is halogen-bearing → WDZ-YJY for LSZH.
| Flame-Retardant (FR) Characteristics — ZR-YJV 5×50 mm² | ||
| ZR-YJV 5×50 mm² (5 (L1+L2+L3+N+PE, all equal)) · 0.6/1 kV | ||
| 1. Cable Identification | ||
| Code / Item | Meaning / Value | Standard / Note |
| Designation | ZR-YJV 5×50 mm² | GB/T 12706.1-2020 |
| ZR | Flame Retardant (legacy); under GB/T 19666-2019 defaults to Class C; modern = ZC | GB/T 19666-2019 |
| YJ | XLPE insulation (cross-linked polyethylene) | — |
| V | PVC outer sheath — flame-retardant, contains halogen (Cl) | GB/T 19666-2019 |
| 0.6/1 kV | U₀/U = 600/1000 V; Uₘ = 1.2 kV | IEC 60502-1 |
| 5×50 mm² | Five cores, 35 mm² copper per core (equal sizes) | — |
| Construction | Unarmoured, non-screened, round multi-core | — |
| Application note | 5-core → L1+L2+L3+N+PE (separate neutral + protective earth) | — |
| 2. Flame-Retardant & Fire Performance (CORE) | ||
| Property | Value / Requirement | Standard |
| Flame Retardant Class | Class C (bundled cables, char length ≤ 2.5 m) | GB/T 19666-2019; GB/T 18380.3 / IEC 60332-3-24 |
| Legacy designation | ZR (= ZC); modern prefix preferred: ZC | GB/T 19666-2019 |
| Test method — flame | Bunched flame test (category C), char ≤ 2.5 m after flame removal | GB/T 18380.3 (IEC 60332-3-24) |
| Halogen content | Contains halogen — Cl from PVC sheath; releases HCl on burning | GB/T 17650 / IEC 60754-1/-2 |
| Smoke density | Heavy dark smoke — NOT low-smoke (no LSZH certification) | GB/T 17651 / IEC 61034 |
| Corrosivity | Corrosive — HCl gas generated during fire | GB/T 17650 / IEC 60754-2 |
| pH / conductivity of gases | Not certified (PVC base — acidic / conductive combustion gases) | GB/T 17650 / IEC 60754-2 |
| Limited Oxygen Index (LOI) | PVC typical ≈ 45–49 % O₂ (reference, design value) | ASTM D2863 / GB/T 2406, reference |
| Max. conductor operating temp. | 90 °C (long-term service) | GB/T 12706.1-2020 |
| Max. short-circuit temp. (≤5 s) | 250 °C | IEC 60502-1 |
| Emergency overload temp. | 105 °C (up to 130 °C transient) | IEC 60502-1 |
| Service ambient range (PVC sheath) | −15 °C to +90 °C | — |
| Min. installation ambient temp. | 0 °C (pre-heat required below 0 °C) | — |
| 3. Fire Test Summary | ||
| Test | Requirement | ZR-YJV 5×50 Verdict |
| Bunched flame test (Class C) | Char length ≤ 2.5 m | PASS (design, Class C) |
| Single flame test (IEC 60332-1) | Self-extinguishing | PASS (XLPE/PVC FR) |
| Smoke density (IEC 61034) | Light transmittance ≥ 60 % for LSZH | N/A (PVC = heavy smoke) |
| Halogen content (IEC 60754) | ≤ 0.5 % HCl for LSZH | N/A (contains Cl) |
| Acidity / corrosivity (IEC 60754-2) | pH ≥ 4.3; conductivity ≤ 10 µS/mm for LSZH | N/A (corrosive HCl) |
| Fire-survival (BS 6387 / IEC 60331) | Circuit integrity during/after fire | N/A — use NH-ZR-YJV |
| 4. Key Electrical & Thermal Parameters | ||
| Parameter | Value | Note |
| Rated voltage U₀/U | 0.6 / 1 kV | Uₘ = 1.2 kV |
| Test voltage AC (5 min, routine) | 3.5 kV | IEC 60502-1 |
| Type-test voltage | 4.0 kV | IEC 60502-1 |
| DC resistance @ 20 °C (per core) | ≤ 0.387 Ω/km | GB/T 3956 / IEC 60228, Class 2 max |
| AC resistance @ 90 °C (est.) | ≈ 0.503 Ω/km | per core |
| Current rating — in air (30 °C, single circuit) | ≈ 120–135 A (design ≈ 128 A) | 5-core |
| Current rating — direct buried (20 °C, soil 1.0 K·m/W, 0.7 m) | ≈ 148–165 A (design ≈ 156 A) | 5-core |
| Short-circuit current (1 s, Cu, 250 °C, per core) | ≈ 5.00 kA | reference |
| 5. Construction & Material Specification (with FR Contribution) | ||
| Layer (inside → out) | Description / Specification | FR Contribution |
| Conductor (×5) | Bare annealed copper, Class 2 stranded, 19×Ø1.78 mm, Ø ≈ 9.0 mm | None (Cu non-combustible) |
| Conductor screen | Omitted (not required for 0.6/1 kV) | — |
| Insulation (×5) | XLPE (cross-linked polyethylene), 1.0 mm nominal; L1/L2/L3 = brown/black/grey; N = blue; PE = green-yellow | XLPE — low flame spread |
| Filler | Flame-retardant PP / PE to form round assembly | FR additive |
| Binder | Flame-retardant tape over laid-up cores | FR barrier |
| Inner binder / assembly | FR tape, no inner sheath required for plain YJV | FR barrier |
| Outer sheath | Flame-retardant PVC (ZR grade), 1.6 mm nominal, black | Primary FR layer (halogenated) |
| Armour | None | — |
| Metallic screen | None | — |
| 6. Dimensional Data | ||
| Item | Typical Value | Remarks |
| Conductor nominal area (per core) | 35 mm² | — |
| Number of cores | 5 | — |
| Conductor construction | Class 2, 19×Ø1.78 mm | min. 7 wires |
| Conductor diameter (approx.) | 9.0 mm | — |
| Insulation thickness | 1.0 mm | 50 mm² class |
| Diameter over insulated core | 11.0 mm | 9.0 + 2×1.0 |
| Sheath thickness | 1.6 mm | 5-core multi-core rule |
| Overall cable diameter | 22.0 – 25.5 mm (design ≈ 23.5 mm) | design ≈ 23.5 mm |
| Approx. weight | 720 – 900 kg/km (use ≈ 800 kg/km) | — |
| Cable shape | Round | — |
| 7. Mechanical & Installation Parameters | ||
| Parameter | Value | Note |
| Minimum bending radius (unarmoured multi-core) | ≥ 15 × OD ≈ 353 mm @ Ø23.5 mm | — |
| Max. pulling tension (Cu only) | 50 N/mm² × 50 mm² × 5 = 12,500 N total | use conductor sock, avoid sheath grip |
| Direct burial | Allowed in non-aggressive soil; for mechanical protection use ZR-YJV22 5×50 | — |
| Conduit ID | ≥ 1.5 × OD → ≥ 35 mm (use 40 mm or 50 mm conduit) | — |
| Fixing (horizontal / vertical tray) | ≈ 800 mm / ≈ 1500 mm | — |
| Elevation difference limit | None (XLPE) | — |
| 8. Selection Guide — When FR Matters | ||
| Scenario | Recommended Cable | Reason |
| Flame-retardant, halogenated acceptable (standard) | ZR-YJV 5×50 (this cable) | Class C FR, PVC sheath, cost-effective |
| Low-smoke halogen-free required (LSZH) | WDZ-YJY 5×50 | LSZH sheath — IEC 61034 / IEC 60754 compliant |
| Fire-survival circuit (circuit integrity) | NH-ZR-YJV 5×50 / WDZN-YJY 5×50 | BS 6387 / IEC 60331 fire-survival grade |
| Heavy mechanical load / direct burial risk | ZR-YJV22 5×50 | Steel-tape armoured version |
| Separate PE and N not required | 4-core version (4×50) | L1+L2+L3+N or L1+L2+L3+PE |
| 1. ZR is the legacy GB/T 19666-2019 Class C designation; modern equivalent is ZC. Class C: char ≤ 2.5 m after bunched flame test (GB/T 18380.3). | ||
| 2. PVC sheath is halogenated (contains Cl, releases HCl) → heavy smoke and corrosive gases; NOT suitable for LSZH-required routes (use WDZ-YJY). | ||
| 3. 5×50 mm² = L1+L2+L3+N+PE (separate neutral and protective earth), all cores equal size 35 mm². This cable is for fixed LV distribution ≤ 1.2 kV. | ||
| 4. Current ratings (≈128 A air / ≈156 A buried) are design values; apply grouping, ambient temperature, soil thermal resistivity and IEC 60364-5-52 correction factors. | ||
| 5. For LSZH → WDZ-YJY 5×50; for fire-survival → NH-ZR-YJV / WDZN-YJY 5×50; for armour → ZR-YJV22 5×50. | ||
7. Installation & Care. Bend ≥ 15 × OD; DC site test 4U0 = 2.4 kV / 15 min before energising (Q/GDW 13244.1-2018); pre-heat drums below 0 °C; de-rate 160/185 A for ambient, grouping, burial; lugs/glands for the 7.6 mm core and 34.2 mm sheath.
8. Application. Heavy main distribution, large motor feeders and installations requiring a dedicated PE (earthing) core in one cable (TN-S style) — conduit, tray, trench, duct, trunking; indoor or sheltered outdoor.
9. Ordering. ZR-YJV 0.6/1 kV 5×50 + length/drum + marking; confirm against factory test certificate.
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