Polyolefin Single Core Earth Cable ZR-YJV 1 X 35mm2 Single Conductor 0.6/1kV Indoor Power
Polyolefin Single Core Earth Cable ZR-YJV 1 X 35mm2 Single Conductor 0.6/1kV Indoor Power
Product Summary
ZR-YJV 1*35mm² Fire Retardant Single Conductor Wire, 0.6/1kV Solid Copper, XLPE Insulation PVC Jacket, Indoor Power Use Code Mean:ZR-Flame Retardant,YJ-XLPE Insulation,V-PVC Outer Sheathed ZR-YJV 1×35 is a flame-retardant, copper-conductor, XLPE-insulated, PVC-sheathed power cable for 0.6/1 kV ...
Product Details
Highlight:
Polyolefin single core earth cable
,single core earth cable ZR-YJV
,0.6/1kV 35mm single core cable
Conductor:
Bare Annealed Copper, Class 2 Stranded Circular, 7×∅2.52 Mm (typical), Conductor Ø ≈ 7.5 Mm
Conductor nominal area:
35 Mm²
Conductor construction:
Class 2, 7×∅2.52 Mm,min. 7 Wires Per GB/T 3956 (≤35 Mm²)
Conductor diameter (approx.):
7.5 Mm
Insulation:
XLPE Compound, Extruded
Insulation thickness (nominal):
0.9 Mm (GB/T 12706.1, 25–35 Mm² Class)
Diameter over insulation (approx.):
9.3 Mm(7.5 + 2×0.9)
Sheath nominal thickness:
1.4 Mm,single-core (some Makers 1.5)
Outer sheath:
Polyolefin (PO) Compound, Flame-retardant Grade (ZR)
Filler / binder:
Flame-retardant (FR) Non-hygroscopic Tape / PP Mesh
Long-term service temperature:
90 °C
Short-circuit temperature (≤5 s):
250 °C
Emergency overload:
105–130 °C (limited Duration)
Routine test:
3.5 KV AC / 5 Min; Type Test 4.0 KV
Volume resistivity @90 °C:
≥ 10¹² Ω·cm
Insulation resistance constant:
≈ 3.67 MΩ·km @90 °C
Product Description
ZR-YJV 1*35mm² Fire Retardant Single Conductor Wire, 0.6/1kV Solid Copper, XLPE Insulation PVC Jacket, Indoor Power Use
Code Mean:ZR-Flame Retardant,YJ-XLPE Insulation,V-PVC Outer Sheathed
ZR-YJV 1×35 is a flame-retardant, copper-conductor, XLPE-insulated, PVC-sheathed power cable for 0.6/1 kV distribution, designed and tested to GB/T 12706.1 and IEC 60502-1.
1. Product Structure (from conductor to outer sheath)
| No. | Layer | Material / Construction | Key data |
|---|---|---|---|
| 1 | Conductor (Cu) | Plain annealed copper, Class 1/2 (typical Class 2 stranded), nominal 35 mm² | Typical stranding 7 × 2.52 mm (7/2.52); Ø ≈ 7.0 mm (7.0–7.6 mm); max. DC resistance ≤ 0.524 Ω/km @ 20 °C (GB/T 3956) |
| 2 | Insulation (XLPE) | Cross-linked polyethylene (thermoset) | Nominal thickness 0.9 mm; Ø over insulation ≈ 8.8 mm; 90 °C continuous rating |
| 3 | Outer sheath (PVC) | Flame-retardant PVC, ST2 type, black | Nominal thickness 1.4 mm; overall Ø ≈ 11.8–12.0 mm; flame retardance ZC (ZR) |
Overall diameter ≈ 12.0 mm (11.8–12.0 mm) and weight ≈ 357 kg/km (350–357 kg/km).
2. Product Performance
- Electrical: Conductor DC resistance ≤ 0.524 Ω/km @ 20 °C; routine AC withstand test 3.5 kV / 5 min without breakdown; finished-cable insulation resistance ≥ 36.7 MΩ·km @ 20 °C (typical reference); XLPE volume resistivity ≥ 1×10¹² Ω·cm; capacitance ≤ 0.45 μF/km.
- Thermal: Max. continuous conductor temperature 90 °C; short-circuit (≤ 5 s) 250 °C; ambient service −20 to +45 °C; laying temperature not below 0 °C.
- Flame retardance: "ZR" = flame-retardant, default class ZC per GB/T 19666; passes single-cable vertical flame test (GB/T 18380.12) and class-C bunched test (GB/T 18380.35: ≥ 1.5 L/m non-metallic volume, 20 min flame, char extent ≤ 2.5 m).
- Ampacity (reference): ≈ 190 A in air (single core, 30 °C); direct burial ≈ 160–195 A depending on soil thermal resistivity — always apply correction factors per GB/T 16895 / IEC 60364.
- Mechanical/installation: min. bending radius 20 × OD (single-core); site DC withstand test after installation 4U0 = 2.4 kV / 15 min (per Q/GDW 13244.1-2018 practice).
3. Key Parameters
- Rated voltage 0.6/1 kV (Um = 1.2 kV); 50 Hz; single core; 35 mm²
- Conductor: Cu Class 2, 7 × 2.52 mm, Ø ≈ 7.0 mm; DC R ≤ 0.524 Ω/km
- Insulation: XLPE, 0.9 mm; Sheath: flame-retardant PVC ST2, 1.4 mm
- Weight ≈ 357 kg/km; OD ≈ 12.0 mm; length 100 m per coil/drum
| ZR-YJV 1×35 mm² Flame-Retardant Copper-Conductor XLPE-Insulated PVC-Sheathed Power Cable — Product Parameters (0.6/1 kV) | |||||
| Construction: CU / XLPE / PVC • Standards: GB/T 12706.1, IEC 60502-1 (cable), GB/T 3956 (conductor), GB/T 19666 & GB/T 18380 (flame retardance) • Nominal values for reference — confirm against factory test certificate | |||||
| No. | Category | Parameter | Value | Unit | Notes / Standard Reference |
| A. Product Identification | |||||
| 1 | Identification | Product name | Flame-retardant copper-conductor XLPE-insulated PVC-sheathed power cable | — | Designation ZR-YJV; "ZR" = flame-retardant (halogen-containing) |
| 2 | Identification | Model designation | ZR-YJV 1×35 | — | Cu / XLPE / PVC |
| 3 | Identification | Design standards | GB/T 12706.1; IEC 60502-1 | — | Conductor: GB/T 3956 / IEC 60228; flame retardance: GB/T 19666, GB/T 18380; safety: CCC / production licence |
| 4 | Identification | Rated voltage U0/U | 0.6/1 | kV | Max system voltage Um = 1.2 kV |
| 5 | Identification | Rated frequency | 50 | Hz | AC power distribution |
| 6 | Identification | Number of cores | 1 | — | Single-core cable |
| 7 | Identification | Nominal cross-sectional area | 35 | mm² | Nominal conductor cross-section per GB/T 3956 |
| B. Cable Construction (from conductor to outer sheath) | |||||
| 8 | Conductor | Material | Plain annealed copper (Cu) | — | High-conductivity electrolytic / oxygen-free copper |
| 9 | Conductor | Conductor class | Class 1 or Class 2 (typical: Class 2, stranded) | — | GB/T 3956 / IEC 60228 |
| 10 | Conductor | Typical stranding construction | 7 wires × 2.52 mm (7/2.52) | — | Class 2 round stranded; nominal section ≈ 35 mm² |
| 11 | Conductor | Conductor diameter | ≈ 7.0 | mm | 7.0–7.6 mm per manufacturer tables (Qifan 7.0 mm; 7/2.52 → ≈ 7.6 mm) |
| 12 | Conductor | Max. DC resistance of conductor at 20 °C | 0.524 | Ω/km | GB/T 3956, Class 2 copper; acceptance criterion for 35 mm² |
| 13 | Insulation | Material | Cross-linked polyethylene (XLPE) | — | Thermally cross-linked; natural/transparent colour |
| 14 | Insulation | Nominal insulation thickness | 0.9 | mm | GB/T 12706.1 / IEC 60502-1 (0.6/1 kV, 35 mm²) |
| 15 | Insulation | Diameter over insulation | ≈ 8.8 | mm | ≈ 7.0 + 2 × 0.9 (calculated) |
| 16 | Sheath | Material | Flame-retardant polyvinyl chloride (PVC, ST2 type) | — | Colour: black (or as ordered) |
| 17 | Sheath | Nominal sheath thickness | 1.4 | mm | GB/T 12706.1 / IEC 60502-1 |
| 18 | Dimensions | Approx. overall diameter | 11.8–12.0 | mm | Qifan 12.0 mm; Weiguang 11.8 mm |
| 19 | Dimensions | Approx. cable weight | ≈ 357 | kg/km | Range 350–357 kg/km across manufacturers (Qifan 357; Weiguang 350) |
| C. Electrical Performance | |||||
| 20 | Electrical | Max. DC conductor resistance at 20 °C | 0.524 | Ω/km | GB/T 3956; routine measurement |
| 21 | Electrical | Power-frequency withstand voltage (routine test) | 3.5 kV / 5 min, no breakdown | — | AC 50 Hz; per GB/T 12706.1 / IEC 60502-1 |
| 22 | Electrical | Insulation resistance (finished cable, 20 °C) | ≥ 36.7 | MΩ·km | Typical finished-cable requirement for 0.6/1 kV XLPE cables; varies with geometry and manufacturer test method |
| 23 | Electrical | XLPE volume resistivity at 20 °C | ≥ 1 × 10¹² | Ω·cm | Material-level requirement (manufacturer reference) |
| 24 | Electrical | Capacitance (single-core, approx.) | ≤ 0.45 | μF/km | Manufacturer reference value |
| 25 | Electrical | Reference ampacity — in air, 30 °C, single core | ≈ 190 | A | Reference value (Guangheng); depends on laying, grouping, ambient — apply correction factors per GB/T 16895 / IEC 60364 |
| 26 | Electrical | Reference ampacity — direct burial, 25 °C | ≈ 160–195 | A | Reference value; depends on soil thermal resistivity and depth (reference range) |
| D. Thermal Performance | |||||
| 27 | Thermal | Max. continuous conductor temperature | 90 | °C | XLPE insulation temperature class |
| 28 | Thermal | Max. conductor temperature under short-circuit (≤ 5 s) | 250 | °C | Per GB/T 12706.1 / IEC 60502-1 |
| 29 | Thermal | Ambient service temperature range | -20 to +45 | °C | Per Qifan datasheet; check project specification |
| 30 | Thermal | Min. installation (laying) temperature | 0 | °C | Pre-heat the cable if ambient is below 0 °C |
| E. Flame Retardance (ZR) | |||||
| 31 | Flame retardance | Flame-retardant class | ZC (class C) by default for "ZR" | — | GB/T 19666; ZA / ZB available on request; halogen-containing PVC (not LSZH) |
| 32 | Flame retardance | Single-cable vertical flame-spread test | Pass | — | GB/T 18380.12 |
| 33 | Flame retardance | Bunched flame-spread test (class C) | Char extent ≤ 2.5 m above burner bottom edge | — | GB/T 18380.35: non-metallic volume ≥ 1.5 L/m; flame application 20 min |
| 34 | Flame retardance | Halogen content | Halogen-containing (PVC) | — | For low-smoke, zero-halogen requirement select WDZ-YJY (LSZH) type |
| F. Installation | |||||
| 35 | Installation | Min. bending radius — single-core cable | 20 × OD | — | Qifan & Huaneng datasheets; some manufacturers specify 15 × OD; OD = actual cable diameter |
| 36 | Installation | Laying methods | Conduit, tray, cable trench, tunnel, duct, supported/suspended aerial | — | Also direct burial with mechanical protection where permitted |
| 37 | Installation | Site withstand test after installation | DC 4U0 = 2.4 kV, 15 min (recommended) | — | Per utility procurement standard Q/GDW 13244.1-2018; practice may vary by project |
| G. Packing & Delivery | |||||
| 38 | Packing | Standard delivery length | 100 m per coil/drum (or as ordered) | — | Typical industry practice; custom lengths available |
| 39 | Packing | Cable marking | Model, rated voltage, manufacturer, year of manufacture, sequential length marks | — | Per GB/T 6995 / project specification |
| 40 | Packing | Packing form | Wooden drum / coil / export packing | — | As per customer requirement |
4.Test Parameters
| ZR-YJV 1×35 mm² — Test / Verification Parameters (per GB/T 12706.1 & IEC 60502-1) | ||||
| Test Stage | Test Item | Method / Standard | Requirement / Acceptance Criterion | Notes |
| Routine test | Conductor DC resistance measurement | GB/T 3956 (IEC 60228) | ≤ 0.524 Ω/km at 20 °C | Measured on every production length |
| Routine test | Power-frequency withstand voltage | GB/T 12706.1 / IEC 60502-1 | 3.5 kV AC, 5 min, no breakdown | Applied between conductor and water/earth; 50 Hz |
| Routine test | Construction check — insulation & sheath thickness, outer diameter | GB/T 2951 | Within GB/T 12706.1 tolerances | Insulation ≥ 0.9 mm nominal; sheath ≥ 1.4 mm nominal |
| Sample test | Hot set (thermal elongation) test — XLPE insulation | GB/T 12706.1 §16.3.13 / GB/T 2951.11 | 200 ± 3 °C, 15 min, stress 0.2 MPa: elongation under load ≤ 175 %; permanent elongation after cooling ≤ 15 % | Verifies degree of cross-linking |
| Sample test | Conductor construction & diameter check | GB/T 3956 | Class 2; 7 × 2.52 mm; Ø ≈ 7.0 mm | Sampled per batch |
| Type test | Single-cable vertical flame-spread test (flame retardance) | GB/T 18380.12 | No flame spread; charring does not reach top reference point | ZR / ZC flame-retardant property |
| Type test | Bunched flame-spread test, class C | GB/T 18380.35 | Char extent ≤ 2.5 m above burner bottom edge; flame application 20 min; non-metallic volume ≥ 1.5 L/m | Class ZC per GB/T 19666 |
| Type test | Bending test (mechanical) | GB/T 12706.1 | Bend around specified mandrel without insulation/sheath damage | Mandrel diameter related to cable OD |
| Post-installation | DC withstand test after installation | Q/GDW 13244.1-2018 (recommended practice) | 4U0 = 2.4 kV DC, 15 min, no breakdown | For new installations; verify project specification |
| Optional | Insulation resistance measurement at 20 °C | Manufacturer test method | ≥ 36.7 MΩ·km (typical finished-cable value) | Not a routine item in GB/T 12706.1; confirm with factory |
| Optional | XLPE volume resistivity at 20 °C | Manufacturer / material test | ≥ 1 × 10¹² Ω·cm | Material-level reference |
5. Coress Section Diagram
| No. | Layer | Material / Construction | Nominal Thickness (mm) | Diameter (mm) | Function / Remarks |
| 1 | Conductor (Cu) | Annealed copper, Class 2 stranded — 7 × 2.52 mm (7/2.52), nominal 35 mm² | — | ≈ 7.0 (Ø) | Current-carrying element; max DC resistance ≤ 0.524 Ω/km @ 20 °C |
| 2 | Insulation (XLPE) | Cross-linked polyethylene | 0.9 | ≈ 8.8 (Ø over insulation) | Dielectric barrier; rated 90 °C continuous; withstands 3.5 kV / 5 min |
| 3 | Outer sheath (PVC) | Flame-retardant PVC, ST2 type, black | 1.4 | ≈ 12.0 (Ø overall) | Mechanical & moisture protection; flame retardance ZC (ZR) per GB/T 19666 |
| Key Dimensions & Properties | |||||
| Overall diameter | 11.8–12.0 | mm | Qifan 12.0 mm; Weiguang 11.8 mm | ||
| Approx. cable weight | ≈ 357 | kg/km | Range 350–357 kg/km across manufacturers | ||
| 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 (single-core) | 20 × OD | — | OD = actual cable diameter | ||
| Flame-retardant class | ZC (ZR) | — | GB/T 19666 | ||
Cable Structure:
| 1. Overall Construction | |||
| The ZR-YJV 1×35 cable is a single-core, flame-retardant power cable rated 0.6/1 kV (Um = 1.2 kV) for 50 Hz power distribution. It consists of three concentric layers built around a stranded copper conductor: an XLPE insulation layer and a flame-retardant PVC outer sheath. Design, dimensions and test requirements follow GB/T 12706.1 and IEC 60502-1; the conductor complies with GB/T 3956 / IEC 60228. | |||
| Approximate overall diameter: 11.8–12.0 mm; approximate cable weight: 350–357 kg/km (representative 357 kg/km). The cable is intended for fixed installation in conduits, trays, trenches, tunnels and ducts. | |||
| 2. Conductor (Layer 1 — Innermost) | |||
| Material: plain annealed copper (Cu). Construction: normally Class 2 round-stranded with 7 wires of 2.52 mm diameter (7/2.52), giving a nominal cross-section of 35 mm². The stranded design keeps the cable flexible during installation while providing low electrical resistance: maximum DC resistance ≤ 0.524 Ω/km at 20 °C. Approximate conductor diameter: 7.0 mm (7.0–7.6 mm per manufacturer tables). |
| 3. Insulation (Layer 2) | |||
| Material: cross-linked polyethylene (XLPE), applied as a 0.9 mm layer over the conductor (diameter over insulation ≈ 8.8 mm). Cross-linking transforms the thermoplastic compound into a thermoset material, which raises the maximum continuous conductor temperature to 90 °C and the short-circuit temperature to 250 °C (≤ 5 s). XLPE provides high dielectric strength, excellent insulation resistance (≥ 10¹² Ω·cm volume resistivity at 20 °C) and low dielectric losses; the finished cable withstands a routine AC test of 3.5 kV for 5 minutes. | |||
| 4. Outer Sheath (Layer 3 — Outermost) | |||
| Material: flame-retardant polyvinyl chloride (PVC), ST2 type, black, applied as a 1.4 mm sheath (overall diameter ≈ 12.0 mm). The sheath provides mechanical protection and moisture resistance and gives the cable its “ZR” flame-retardant property — flame-retardant class ZC per GB/T 19666, passing the single-cable vertical flame test (GB/T 18380.12) and the class-C bunched flame test (GB/T 18380.35, char extent ≤ 2.5 m). Note: PVC is halogen-containing; for low-smoke, zero-halogen requirements select WDZ-YJY. | |||
| 5. Construction Features & Installation Notes | |||
| • Single core, 35 mm² nominal section; weight ≈ 357 kg/km; standard delivery 100 m per coil/drum. • Minimum bending radius for single-core laying: 20 × OD. • Installation ambient temperature not below 0 °C (pre-heat the cable if colder). • Working ambient range −20 to +45 °C. • Confirm final values against the factory quality certificate and GB/T 12706.1 / IEC 60502-1 test reports. |
6. Usage Precautions
- Install only when ambient ≥ 0 °C; pre-heat the cable if colder.
- Min. bending radius 20 × OD — avoid sharp bends and kinking.
- ZR-YJV contains halogen (PVC); for LSZH requirements choose WDZ-YJY.
- Ampacity must be derated for grouping, ambient temperature and burial conditions.
- Perform the site DC test only after verifying insulation integrity; avoid prolonged overvoltage.
- Store on drums/coils, away from direct sunlight and mechanical damage.
7. Application Range
Indoor/outdoor distribution and branch circuits at 0.6/1 kV in industrial plants, commercial buildings, residential complexes, substations and similar installations — in conduits, trays, trenches, tunnels and ducts; suitable where flame-retardant performance is required (not for direct sunlight exposure unless UV-protected).
9.Package
10.Factory Overview
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