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

Name: 1x185mm² Single Core Cable Stranded Copper Conductor Pvc Sheath Fire Resistant C Level
Brand: Anhui Tongdu International Trade Co., Ltd.
SKU: ZC-YJV 1x185mm²
Price: Negotiable USD
Availability: InStock

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

Basic Properties

country of origin

China

brand name

TONGDU

certificate

CE/ISO/CCC

product model

ZC-YJV 1x185mm²

Trading Properties

moq

1 Meter

payment method

L/C,T/T

supply capacity

100000 rolls per month

PDF

ZR-YJV_1x185_Parameters.pdf

PDF

ZR-YJV_1x185_Structure.pdf

Product Summary

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 Code Meaning ZC Flame retardant, Class C (bundled combustion test) YJ XLPE (cross-linked polyethylene) insulation ...

Product Details

Highlight:

1x185mm2 Single Core Cable

Single Core Cable Fire Resistant

pvc sheath cable 1944kg/km

Conductor:

99.99% Oxygen-free Copper

Inner Insulation:

XLPE

Outer Sheath:

Flame-retardant PVC Compound (ZC Grade)

Conductor nominal area:

185 Mm²

Conductor construction:

Class 2 Compacted Stranded Cu, 37×∅2.50 Mm (typical)

Insulation thickness:

1.6 Mm (GB/T 12706 For 185–240 Mm² At 0.6/1 KV)

Sheath thickness:

1.7 Mm

Filler / binder:

Generally None For Single-core; Thin Non-hygroscopic Binder Tape Optional Per Factory Process

Conductor diameter (approx.):

16.5 Mm

Diameter over insulation (approx.):

19.7 Mm

Overall cable diameter:

22.0 – 24.0 Mm

Approx. weight:

1750 – 1944 Kg/km

Product Description

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

Code	Meaning
ZC	Flame retardant, Class C (bundled combustion test)
YJ	XLPE (cross-linked polyethylene) insulation
V	PVC (polyvinyl chloride) outer sheath
0.6/1 kV	Rated voltage U₀/U = 600/1000 V; max. system voltage Uₘ = 1.2 kV
1×185 mm²	Single core, nominal copper conductor area 185 mm²
Construction	Unarmoured, non-screened, round cable

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)

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

3. Product Components / Construction (inside → outside)

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

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

4. Dimensional Data

Item	Typical value	Remarks
Conductor nominal area	185 mm²	—
Conductor construction	Class 2 compacted stranded Cu, 37×∅2.50 mm (typical)
Conductor diameter (approx.)	16.5 mm
Insulation nominal thickness	1.6 mm
Diameter over insulation (approx.)	19.7 mm	16.5 + 2×1.6
Sheath nominal thickness	1.7 mm
Overall cable diameter	22.0 – 24.0 mm	Typical ~23.9 mm; Nexans 22.0 mm, Libo 22.66 mm, Alfanar 23.2 mm, Class 5 24.0 mm
Approx. weight	1750 – 1944 kg/km	1750 (Nexans), 1885 (structure table), 1944 (ZC-YJV62 sample)
Cable shape	Round	—

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

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

Property	Value
Insulation material	XLPE (cross-linked polyethylene), Type TR-XLPE
Outer sheath material	PVC (polyvinyl chloride), Type ST₂
Long-term service temp.	90 °C (continuous, XLPE insulation)
Short-circuit temp. (≤5 s)	250 °C (Cu conductor limit for XLPE)
Emergency overload temp.	130 °C (short term, ≤1 h)
Test voltage AC (5 min)	3.5 kV (routine test, 0.6/1 kV class)
Dielectric strength	≥ 20 kV/mm (room temp.)
Volume resistivity @20 °C	≥ 1×10¹⁴ Ω·cm

6. Electrical Parameters

Parameter	Value	Note
Rated voltage U₀/U	0.6 / 1 kV	GB/T 12706.1 / IEC 60502-1
Max. system voltage	1.2 kV AC	—
Test voltage AC (5 min)	3.5 kV	Routine test (conductor-to-sheath)
DC resistance @20 °C	≤ 0.0991 Ω/km	GB/T 3956 Class 2 Cu max, 185 mm²
AC resistance @90 °C (est.)	≈ 0.127 Ω/km	per core
Current rating in air (30 °C)	430 A	single-core, touching, in free air
Current rating in tray (30 °C)	410 A	single-core, spaced 2×OD
Current rating buried in ground (20 °C, thermal resistivity 1.2 K·m/W)	380 A	single-core, direct buried
Current rating in conduit (30 °C)	360 A	single-core in conduit
Short-circuit current (1 s, Cu, 250 °C)	≈ 20.4 kA (20,400 A)	185 mm² Cu
Capacitance (core-to-sheath, approx.)	≈ 0.22 µF/km	XLPE insulation
Inductive reactance (approx.)	≈ 0.10 Ω/km	at 50 Hz, single-core
Frequency	50/60 Hz AC	—

Reference values: 1×185 mm² at 430 A, single-phase 230 V → max load ≈ 99 kW; three-phase 400 V → max load ≈ 298 kW. Suitable for main power distribution, feeder circuits, and large motor supply.

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

Property	Value
Max. conductor operating temp.	90 °C (continuous)
Max. short-circuit temp. (≤5 s)	250 °C (Cu conductor, XLPE limit)
Emergency overload temp.	130 °C (≤1 h, not recommended for continuous)
Min. installation ambient temp.	0 °C (PVC sheath); below 0 °C pre-heating required
Service ambient range	−20 °C to +90 °C (XLPE insulation, PVC sheath)
Flexing temp. range	0 °C to +90 °C
Fire survival	Standard (flame retardant C, single cable)

Fire Performance (ZC-YJV — Flame Retardant C)

Property	Value / Requirement
Flame retardant	IEC 60332-3-24 Category C (bundled, 3.5 L/m cable volume, self-extinguishing)
Halogen content	Contains halogen (PVC sheath)
Smoke density	Standard (non-low-smoke)
Corrosivity	Corrosive (PVC sheath)
Fire survival (circuit integrity)	Not applicable (standard version)

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.

Parameter	Value	Remarks
Minimum bending radius	≥ 15 × OD → ≈ 327 mm at Ø21.8 mm	unarmoured single-core
Max. pulling tension	2,775 N (185 mm² × 15 N/mm²)	Cu conductor limit
Direct burial	Suitable (with sand bedding and warning tape)	unarmoured — protect from mechanical damage
Surface mounting	Good (cable tray, ladder, cleats)	—
Conduit ID	≥ 40 mm	—
Fixing	cable cleats, clamps, tray	—
Impact resistance	Low (PVC sheath only)	protect with conduit or mechanical cover in exposed areas
Water resistance	Moisture-resistant (XLPE + PVC)	not waterproof
UV resistance	Poor (PVC degrades in sunlight)	indoor or buried use; for outdoor aerial use UV-stabilised sheath or conduit
Flex life	Low (Class 2 stranded, not for repeated flexing)	fixed installation only
Termination note	Crimp lug or compression terminal; no ferrules needed (Class 2 stranded)	—

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

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.

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

Key engineering notes for this size

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.
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.
Weight is ~1.9 t/km — plan drum handling and tray loading accordingly.
DC resistance 0.0991 Ω/km is the hard compliance limit (GB/T 3956 Class 2); real cables typically 5–15 % below.

FAQ

1. Product Identification & Naming

Q1. What does the model designation “ZC-YJV” stand for?

Each letter in the model code describes a layer or performance feature of the cable: “Z” stands for flame-retardant (燃烧), “C” denotes flame-retardant Class C (the middle grade among Classes A, B, and C), “YJ” indicates cross-linked polyethylene (XLPE) insulation, and “V” denotes a polyvinyl chloride (PVC) outer sheath. In short, ZC-YJV is a copper-core, Class C flame-retardant, XLPE-insulated, PVC-sheathed power cable.

Q2. What does “1×185 mm²” mean in the model name?

“1” means the cable has a single core (single conductor). “185 mm²” is the nominal cross-sectional area of the copper conductor. A 185 mm² single-core cable is typically used for high-current branch or main feeder circuits where a large ampacity is required.

Q3. What is the rated voltage of this cable?

The standard rated voltage (U₀/U) is 0.6/1 kV, meaning 0.6 kV phase-to-earth and 1 kV phase-to-phase. It is designed for low-voltage power transmission and distribution systems. Higher-voltage variants (e.g., 6/10 kV, 8.7/15 kV) are also available under the YJV family but are outside the scope of this FAQ.

2. Construction & Materials

Q4. What materials are used in the conductor, insulation, and sheath?

Conductor: plain (bare) copper, Class 2 stranded. Insulation: cross-linked polyethylene (XLPE) compound. Outer sheath: flame-retardant PVC compound. No armor layer is present in the standard ZC-YJV construction (armored versions are designated YJV22, YJV32, etc.).

Q5. What conductor class is used — solid or stranded?

For a 185 mm² conductor, Class 2 stranded copper is used by default. Stranded construction provides flexibility and easier installation compared with a solid conductor of the same cross-section. The conductor is manufactured in accordance with GB/T 3956 (or equivalent IEC 60228).

Q6. Is this cable armored? Can it be directly buried?

Standard ZC-YJV (without a digit suffix) is unarmored. It can be installed in cable trays, conduits, duct banks, or indoors. For direct buried installation, an armored variant such as ZC-YJV22 (double galvanized steel-tape armor) or ZC-YJV32 (fine steel-wire armor) should be selected to provide mechanical protection.

3. Technical Specifications

Q7. What is the maximum continuous operating temperature?

The maximum permissible conductor temperature under normal continuous operation is 90 °C. This is a key advantage of XLPE-insulated cables over PVC-insulated (VV) cables, which are typically limited to 70 °C.

Q8. What is the short-circuit temperature rating?

During a short-circuit event, the conductor temperature may rise to a maximum of 250 °C, provided the fault duration does not exceed 5 seconds. This rating is based on the thermal withstand capability of the XLPE insulation.

Q9. What is the approximate current-carrying capacity (ampacity)?

The ampacity of a 1×185 mm² copper XLPE cable depends strongly on installation conditions (ambient temperature, grouping, burial depth, thermal resistivity, and whether it is installed in air or buried). As a general reference, typical values fall in the range of approximately 370–440 A for single-core copper XLPE cables at 30 °C ambient. For a precise engineering calculation, refer to GB/T 16895 / IEC 60364 or the manufacturer's ampacity tables and apply the appropriate derating factors.

Q10. What is the maximum conductor DC resistance?

The maximum DC resistance of a 185 mm² Class 2 copper conductor at 20 °C is approximately 0.0991 Φ/km (annealed copper), per GB/T 3956 / IEC 60228. The exact value may vary slightly by manufacturer and should be confirmed on the factory test report.

4. Flame-Retardant Performance (Class C)

Q11. What does “Class C flame-retardant” mean?

Class C flame-retardant performance is defined by the cable bundle flame-retardant test (GB/T 18380.3 / IEC 60332-3). In the test, a bundle of cables of specified cross-section and length is burned with a prescribed gas flame for a set period. For Class C, the carbonized height along the cable bundle must not exceed approximately 2.5 m after the burner is removed. The cable should self-extinguish and flame spread should be limited.

Q12. How does ZC-YJV compare with ZA-YJV and ZB-YJV?

Flame-retardant cables are graded into three classes: Class A (highest), Class B (medium-high), and Class C (standard). The classes differ in the number of cables loaded in the test bundle and the required carbonized length. Class A offers the strongest flame-retardant performance and is used in high-risk installations such as subway tunnels, nuclear power plants, and high-rise buildings. Class C is the most commonly used grade for general commercial and industrial buildings where moderate flame-retardant requirements apply.

Q13. Is ZC-YJV the same as fire-resistant (NH-YJV) cable?

No. Flame-retardant (Z-type) and fire-resistant (NH-type) cables serve different purposes. Flame-retardant cables slow the spread of fire and self-extinguish after the ignition source is removed. Fire-resistant cables (e.g., NH-YJV) are designed to maintain circuit integrity and continue operating for a specified period (typically 90–180 minutes) while exposed to direct flame, thanks to a special mica-tape layer. Fire-resistant cables are used for emergency systems such as fire pumps, smoke extraction fans, emergency lighting, and fire alarm circuits.

5. Installation & Handling

Q14. What is the minimum bending radius during installation?

For single-core unarmored cables, the minimum bending radius during installation is generally 20 times the cable outer diameter (20D). After installation (static condition), a minimum of 15D is commonly recommended. Some manufacturers specify 15D for single-core cables; always refer to the manufacturer's installation manual. D = actual outer diameter of the cable.

Q15. What ambient temperature is required during cable laying?

Cable laying should not be performed when the ambient temperature is below 0 °C. At lower temperatures, the PVC sheath and XLPE insulation become stiff and more prone to cracking during bending. If installation in cold conditions is unavoidable, the cable should be pre-warmed in a heated environment for an adequate period before pulling.

Q16. Can this cable be installed outdoors or buried directly?

ZC-YJV has a UV-resistant PVC sheath and can be installed outdoors in cable trays or conduits. However, for long-term outdoor exposed installation, a sheath with enhanced UV resistance or additional protection (e.g., conduit) is recommended. For direct burial, use the armored variant (YJV22 or YJV32) as noted in Q6.

Q17. What termination accessories are recommended?

For 0.6/1 kV single-core cables, heat-shrink or cold-shrink termination kits rated for 1 kV should be used. Cable lugs (copper compression or welding-type) matched to the 185 mm² conductor must be properly crimped using the correct dies. Ensure the conductor is fully inserted into the lug barrel and that the crimping height and number of crimps follow the lug manufacturer's specification.

6. Typical Applications

Q18. What are the typical applications of ZC-YJV 1×185 mm²?

This cable is commonly used for: low-voltage main feeders and large branch circuits in commercial and residential buildings; power supply to large loads such as transformers, switchgear panels, and large HVAC equipment; industrial plant power distribution; underground cable duct and tray installations; and infrastructure projects where Class C flame-retardant performance is required by the electrical code.

Q19. Is this cable suitable for three-phase systems?

Yes. A single-core 185 mm² cable can be used in a three-phase system by running three cables (one per phase), plus a neutral and earth cable as required. Alternatively, multi-core variants (e.g., 3×185, 4×185, 5×185) are available. When installing single-core AC cables in parallel or groups, be aware of induced heating in ferromagnetic cable cleats and supports; use non-magnetic cleats or arrange the cables in a trilateral (trefoil) or flat formation following the manufacturer's guidance.

Q20. Can this cable be used in humid or corrosive environments?

The standard PVC sheath provides good resistance to moisture and many common industrial chemicals. However, in highly corrosive environments (e.g., chemical plants, coastal areas with salt spray), a polyethylene (PE) sheath or a special corrosion-resistant sheath compound should be considered. Consult the manufacturer for specific chemical compatibility data.

7. Standards & Certifications

Q21. Which standards does this cable comply with?

ZC-YJV 0.6/1 kV cables are manufactured in accordance with GB/T 12706 (equivalent to IEC 60502) for rated voltages from 1 kV to 35 kV. The conductor conforms to GB/T 3956 / IEC 60228. Flame-retardant performance is tested per GB/T 18380 / IEC 60332. For export orders, equivalent international standards such as IEC 60502-1, BS 5467, or NEC/UL standards can be agreed upon.

Q22. What certifications are typically available?

Common certifications include: CCC (China Compulsory Certification) for the domestic Chinese market; CE marking for European export; ISO 9001 quality management system; RoHS compliance for restricted hazardous substances; and VDE or TUV certification for specific European markets. The exact certification set depends on the manufacturer and the intended market.

8. Storage, Packaging & Ordering

Q23. How should the cable be stored before installation?

Cable drums should be stored indoors or under cover, on flat and stable ground, with the drum axis horizontal (rolled on the flange, not on the cable end). Avoid direct sunlight, moisture, and contact with chemicals or oil. The cable ends must be sealed with heat-shrink end caps or PVC tape to prevent moisture ingress. Do not stack drums excessively high to avoid deformation or sheath damage.

Q24. What is the standard packaging and length per drum?

Cables are typically supplied on wooden or steel-wooden drums. Standard delivery lengths are commonly 500 m or 1000 m per drum, though custom lengths can be negotiated. The exact length per drum depends on the cable outer diameter, weight, and drum size. The net length and gross weight are clearly marked on the drum label.

Q25. Are custom lengths, colors, or special requirements available?

Yes. Most manufacturers support OEM/ODM services, including custom cut-to-length delivery, special conductor colors (e.g., red, blue, yellow/green, grey, black), custom sheath printing (brand name, voltage, cross-section, meter marking), and low-smoke halogen-free (LSOH) sheath options under the WDZ-YJV family. Please specify your requirements when placing an order.

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