ZR-YJV 1*240mm² Fire Retardant Single Conductor Cable, 0.6/1kV Pure Copper, XLPE PVC Sheath for Indoor Power Wiring
Product Summary
Product Details
Product Description
ZR-YJV 1*240mm² Fire Retardant Single Conductor Cable, 0.6/1kV Pure Copper, XLPE PVC Sheath for Indoor Power Wiring
Code Mean:ZR-Flame Retardant,YJ-XLPE Insulation,V-PVC Outer Sheathed
ZR-YJV 1×240 mm² — Product Briefing
1. What It Is. The ZR-YJV 1×240 is the heavy feeder class of the flame-retardant CU/XLPE/PVC family — a single core rated 0.6/1 kV (Um = 1.2 kV), 50 Hz, built to GB/T 12706.1 / IEC 60502-1, conductor per GB/T 3956 / IEC 60228, fire performance per GB/T 19666 / GB/T 18380 (default ZC).
2. Construction, Core to Jacket. Layer stack with nominal figures:
| Layer | Build | Wall | Diameter |
|---|---|---|---|
| Core | Annealed copper, Class 2, 61 × 2.25 mm (61/2.25, 1+6+12+18+24), 240 mm² | — | ≈ 17.5 mm (compacted; up to ≈ 19.5 mm round-lay) |
| Dielectric | Cross-linked polyethylene | 1.7 mm | ≈ 20.9 mm over insulation |
| Jacket | Flame-retarded PVC, ST2, black | 2.0 mm | ≈ 24.9 mm overall |
Weight ≈ 2410 kg/km (2400–2500 across makers; copper alone ≈ 2134 kg/km); OD 24.9–26.4 mm.
3. Electrical Performance. DC resistance ≤ 0.0754 Ω/km @ 20 °C; routine withstand 3.5 kV AC / 5 min; XLPE volume resistivity ≥ 1×10¹² Ω·cm; typical insulation resistance ≥ 36.7 MΩ·km; capacitance ≤ 0.45 μF/km. Reference ampacity ≈ 625 A in air (30 °C) and ≈ 555 A direct-buried — derate per GB/T 16895 / IEC 60364.
|
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 |
|
DC resistance @20 °C (Class 2 Cu) |
≤ 0.0754 Ω/km |
GB/T 3956 / IEC 60228 max |
|
AC resistance @90 °C (est.) |
≈ 0.098 Ω/km |
copper temp. coefficient |
|
Current rating in air (30–40 °C, single circuit, single-core) |
≈ 590 – 610 A |
PVC sheath; design ≈ 590 A |
|
Direct buried (20 °C, soil 1.0 K·m/W, 0.7 m) |
≈ 535 – 550 A |
design ≈ 535 A |
|
Short-circuit current (1 s adiabatic, Cu, 250 °C) |
≈ 27.75 kA |
reference |
|
Frequency |
50/60 Hz AC (DC usable) |
— |
4. Thermal & Mechanical Envelope. Continuous 90 °C; short-circuit 250 °C (≤ 5 s); ambient −20 to +45 °C; laying ≥ 0 °C; minimum bend radius 20 × OD (single core).
| ZR-YJV 1×240 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 1×240 | — | 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 | 240 | 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 | 61 wires × 2.25 mm (61/2.25, lay-up 1+6+12+18+24) | — | Class 2 round stranded; nominal section ≈ 240 mm² |
| 11 | Conductor | Conductor diameter | ≈ 17.5 | mm | ≈ 17.5 mm compact (17.5–19.5 mm across stranding practice) |
| 12 | Conductor | Max. DC resistance of conductor at 20 °C | 0.0754 | Ω/km | GB/T 3956, Class 2 copper; acceptance criterion for 240 mm² |
| 13 | Insulation | Material | Cross-linked polyethylene (XLPE) | — | Thermally cross-linked; natural/transparent colour |
| 14 | Insulation | Nominal insulation thickness | 1.7 | mm | GB/T 12706.1 / IEC 60502-1 (0.6/1 kV, 240 mm²) |
| 15 | Insulation | Diameter over insulation | ≈ 20.9 | mm | ≈ 17.5 + 2 × 1.7 (calculated, compact conductor) |
| 16 | Sheath | Material | Flame-retardant polyvinyl chloride (PVC, ST2 type) | — | Colour: black (or as ordered) |
| 17 | Sheath | Nominal sheath thickness | 2.0 | mm | GB/T 12706.1 / IEC 60502-1 (cabhr table) |
| 18 | Dimensions | Approx. overall diameter | 24.9 | mm | ≈ 24.9 mm (24.9–26.4 mm across sources: cabhr 24.9; ahtk 26.0; Meihe 26.4) |
| 19 | Dimensions | Approx. cable weight | ≈ 2410 | kg/km | cabhr 2410; Meihe 2400; ahtk 2500 (copper core alone ≈ 2134 kg/km) |
| C. Electrical Performance | |||||
| 20 | Electrical | Max. DC conductor resistance at 20 °C | 0.0754 | 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 reference 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 | ≈ 625 | A | cabhr table (625 A); depends on laying, grouping, ambient — apply correction factors per GB/T 16895 / IEC 60364 |
| 26 | Electrical | Reference ampacity — direct burial, 25 °C | ≈ 555 | A | cabhr table; depends on soil thermal resistivity and depth |
| 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 family; 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; 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 |
5. Fire-Retardancy Credentials. Passes GB/T 18380.12 single burn and class-C bunched burn GB/T 18380.35 (char ≤ 2.5 m) → ZC per GB/T 19666. PVC contains halogen — spec WDZ-YJY for LSZH duty.
6. Verification & Testing. Routine: DC resistance, 3.5 kV/5 min, dimension audit (ins. ≥ 1.7 mm, sheath ≥ 2.0 mm). Sample: XLPE hot-set (200 ± 3 °C / 15 min / 0.2 MPa). Type: flame + bending. Site: DC 4U0 = 2.4 kV / 15 min (Q/GDW 13244.1-2018 practice).
| ZR-YJV 1×240 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) | ≤ 0.0754 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 ≥ 1.7 mm nominal; sheath ≥ 2.0 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; 61 × 2.25 mm; Ø ≈ 17.5 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 |
7.Cross Section Structure
| ZR-YJV 1×240 mm² — Cable Cross-Section Structure (Schematic) | |||||
| Layers 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) | Annealed copper, Class 2 stranded — 61 × 2.25 mm (61/2.25, 1+6+12+18+24), nominal 240 mm² | — | ≈ 17.5 (Ø) | Current-carrying element; max DC resistance ≤ 0.0754 Ω/km @ 20 °C |
| 2 | Insulation (XLPE) | Cross-linked polyethylene | 1.7 | ≈ 20.9 (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 | 2 | ≈ 24.9 (Ø overall) | Mechanical & moisture protection; flame retardance ZC (ZR) per GB/T 19666 |
| Key Dimensions & Properties | |||||
| Overall diameter | 24.9 | mm | 24.9–26.4 mm across sources (cabhr 24.9; ahtk 26.0; Meihe 26.4) | ||
| Approx. cable weight | ≈ 2410 | kg/km | cabhr 2410; Meihe 2400; ahtk 2500; Cu core alone ≈ 2134 kg/km | ||
| 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 | ||
| Product Structure Introduction — ZR-YJV 1×240 mm² (English) | |||
| Layered construction description, from conductor to outer sheath · per GB/T 12706.1 & IEC 60502-1 · CU / XLPE / PVC · 0.6/1 kV | |||
| 1. What This Cable Is | |||
| ZR-YJV 1×240 is the large-format member of the flame-retardant YJV family: one copper core, XLPE insulation and a PVC sheath, rated 0.6/1 kV AC. It is built and verified to GB/T 12706.1 / IEC 60502-1, with the conductor per GB/T 3956 / IEC 60228 and the “ZR” fire-retardant mark per GB/T 19666 (default ZC). Typical package: about 24.9 mm outside diameter, ≈ 2410 kg/km mass, 100 m drums. | |||
| This size suits heavy feeders where a 240 mm² copper path is required; it is a fixed-installation product and must not be flexed continuously. | |||
| 2. Conductor Build (Inner Layer) | |||
| Sixty-one annealed copper wires of 2.25 mm (61/2.25, concentric lay-up 1+6+12+18+24) are stranded into a Class 2 conductor of 240 mm² nominal section. The multi-wire architecture gives the bundle enough compliance to be pulled around trays and through ducts, and the 20 °C DC resistance is kept within 0.0754 Ω/km. Compaction yields a core of about 17.5 mm; a round-lay (non-compacted) build may reach up to ≈ 19.5 mm. | |||
| 3. Dielectric Build (Middle Layer) | |||
| The core receives a 1.7 mm extrusion of cross-linked polyethylene, growing the diameter over insulation to ≈ 20.9 mm. Cross-linking upgrades the polymer into a thermoset, permitting 90 °C continuous operation and 250 °C for five seconds in fault conditions. Electrically, the layer guarantees volume resistivity ≥ 1×10¹² Ω·cm and every drum passes 3.5 kV AC for 5 minutes as a routine test. | |||
| 4. Sheath Build (Outer Layer) | |||
| A 2.0 mm black PVC sheath (flame-retardant ST2 compound) closes the cable at ≈ 24.9 mm. Beyond shielding the dielectric from moisture, abrasion and impact, the jacket is what carries the ZC fire rating — proven through GB/T 18380.12 (single burn) and GB/T 18380.35 (class-C bunched, char limit 2.5 m). PVC means halogen: choose WDZ-YJY wherever zero-halogen, low-smoke behaviour is compulsory. | |||
| 5. User Guidance & Constraints | |||
| • Single-core bending limit 20 × OD. • Commission only after the DC 4U0 = 2.4 kV / 15 min site test. • Service ambient −20 to +45 °C; warm drums below 0 °C. • Apply derating for bundling and burial before final sizing. • Confirm core diameter from the factory certificate before ordering lugs, glands and joints. |
8. Precautions in Use. Keep bends ≥ 20 × OD; unreel without twisting; shield from UV and sharp edges; run the site DC test before energising; pick lugs/glands on the actual core diameter; do not flex continuously.
9. Application Scope. Main switchboard tails, transformer LV connections, large motor feeders, risers and industrial sub-mains — trays, conduits, trenches, tunnels, ducts; indoor or sheltered outdoor.
10. How to Order. ZR-YJV 0.6/1 kV 1×240, length, drum type, marking. Standard 100 m drums. Confirm with the factory certificate before installation.
Related Products
ZC-YJV22 5 Cores Cable 3x185mm2+2x95mm2 Armoured XLPE Flame Retardant Cable 0.6/1kV
ZC-YJV22 5 Core 3x185mm²+2x95mm² Armored XLPE Flame Retardant Copper Cable 0.6/1kV Cable Designation & Meaning Code Meaning ZC Flame retardant Category C (GB/T 18380.3 / IEC 60332-3-24, Class C) YJ XLPE (cross-linked polyethylene) insulation V PVC outer sheath 22 Steel tape armoured (double steel ...
XLPE Insulated 4 Core Shielded Cable Copper Power ZR-YJV 4x300mm2 For Power Transmission
XLPE Insulated Flame Retardant Copper Cable ZR-YJV 4*300mm² for Power Transmission 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 — ...
Copper Conductor 4 Cores Cable ZR-YJV 4x240mm2 Flame Retardant Cable For Industrial
Copper Conductor ZR-YJV 4*240mm² Flame Retardant Cable for Industrial Wiring 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 ...
ZR-YJV 4 Core Electrical Cable 4x185mm2 Flame Retardant Copper Power Distribution
ZR-YJV 4*185mm² Flame Retardant 4 Core Copper Power Distribution Cable 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 ...
