1x185mm2 Single Core Cable Stranded Copper Conductor Pvc Sheath Fire Resistant C Level

0.6/1kV ZC-YJV 1x185mm²  Stranded Copper Conductor XLPE Insulation PVC Outer Sheath Fire Resistant C Level

Technical Datasheet — ZC-YJV 0.6/1 kV 1×185 mm²

1. Cable Designation & Meaning

2. Applicable Standards

• GB/T 12706.1-2020​ (equivalent to IEC 60502-1) — Extruded insulation power cables ≤ 1 kV
• GB/T 3956 / IEC 60228​ — Conductors
• GB/T 19666-2019​ — Flame retardant & fire resistant cables
• GB/T 18380.3​ — Bundled flame propagation test (Class C)

3. Product Components / Construction (inside → outside)

1. Conductor​ — Bare annealed copper, Class 2 stranded compacted circular​ (37 wires typical; GB/T 3956 requires min. 30 wires for compacted round 185 mm²)
2. Conductor screen​ — Not required for 0.6/1 kV Class 2; normally omitted
3. Insulation​ — XLPE compound, extruded (black / red / blue etc. on request)
4. Insulation thickness (nominal)​ — 1.6 mm​ (GB/T 12706 for 185–240 mm² at 0.6/1 kV)
5. Filler / binder​ — Generally none for single-core; thin non-hygroscopic binder tape optional per factory process
6. Outer sheath​ — Flame-retardant PVC​ compound (ZC grade)
7. Sheath thickness (nominal)​ — 1.7 mm​
8. Sheath colour​ — Black (standard); red / yellow-green / blue / brown available
9. Armour​ — None
10. Metallic screen​ — None

4. Dimensional Data

5. Insulation Data

• Material:​ XLPE (cross-linked polyethylene)
• Nominal thickness:​ 1.6 mm (GB/T 12706, 185–240 mm² class)
• Long-term service temperature rating:​ 90 °C
• Short-circuit temperature rating (≤5 s):​ 250 °C​
• Emergency overload temperature:​ 105 °C (limited duration)
• Dielectric strength:​ Pass 3.5 kV AC / 5 min routine test; 4.0 kV type test
• Volume resistivity @90 °C:​ ≥ 10¹² Ω·cm (typical XLPE)
• Insulation resistance constant (R₀·L @90 °C):​ ≈ 3.67 MΩ·km

6. Electrical Parameters

7. Temperature Characteristics

• Max. conductor operating temperature (continuous):​ 90 °C​
• Max. conductor temp. during short circuit (≤5 s):​ 250 °C​
• Emergency overload temperature:​ 105 °C (limited duration, general XLPE practice)
• Min. ambient temperature during installation:​ 0 °C​ (below 0 °C requires pre-heating)
• Service ambient temperature range:​ −20 °C to +90 °C (sheath/environment)
• Flame retardant class:​ Category C, bundled flame test, self-extinguishing, limited flame spread per GB/T 19666

8. Mechanical & Installation Parameters

• Minimum bending radius (single-core unarmoured):​ ≥ 20 × overall diameter​ → ≈ 440–480 mm at Ø22–24 mm
• Maximum pulling tension (copper conductor only):​ 50 N/mm² × 185 mm² = 9250 N​
• PVC sheath pulling limit:​ significantly lower — avoid direct sheath grip; use conductor pulling eye
• Direct burial:​ Allowed in non-aggressive soil without heavy impact; use sand bed + warning tape, deeper layout or conduit under roads
• Magnetic conduit warning (AC single-core):​ Must NOT be laid in magnetic steel pipe/conduit​ in AC circuits; use non-magnetic conduit or trefoil/flat arrangement to avoid eddy-current heating
• Elevation difference:​ No limitation for XLPE insulated cable.

9. Scope of Application / Usage Range

The ZC-YJV 0.6/1 kV 1×185 mm²​ cable is intended for fixed installation​ in low-voltage power distribution & transmission systems up to 1.2 kV system voltage, where basic flame-retardant (Class C)​ performance is required but fire-survival (fire-resistant)​ function is not mandated.

Typical applicable locations:

• Indoor power distribution rooms, switchboards, busbar risers in high-rise buildings
• Cable trays, cable ducts, cable trenches & shafts in commercial / residential buildings
• Fixed wiring in industrial plants, warehouses, light/medium machinery feeders
• Direct buried routes in non-aggressive soil with low mechanical impact
• Street lighting, PV inverter AC output / combiner circuits, EV fast-charger feeders (DC side requires polarity check)
• Metro/rail auxiliary power, stations, general civil engineering projects requiring ZC flame-retardant grade​

Not suitable for:

• Heavy tensile / armour-protected routes → use YJV22 / ZC-YJV22
• Fire-survival emergency circuits → use NH-ZC-YJV
• Highly corrosive / hydrocarbon-rich environments without extra barrier
• Magnetic conduit AC single-core runs​ (eddy-current risk)
• Oil-filled / submerged without dedicated design.

Key engineering notes for this size

1. Insulation thickness jumps at 185 mm²​ — it is 1.6 mm​ (the 120 mm² value of 1.2 mm does not​ apply here). This is a common design error to avoid.
2. Current rating is formation-dependent​ — single-core 185 mm² in air ranges 510–661 A depending on flat/trefoil/spaced; always state laying method. For budget design, 530 A (air) / 480 A (buried)​ is conservative.
3. Weight is ~1.9 t/km​ — plan drum handling and tray loading accordingly.
4. DC resistance 0.0991 Ω/km​ is the hard compliance limit (GB/T 3956 Class 2); real cables typically 5–15 % below.