Mica Tape Fire Resistant XLPE Insulated Steel Wire Armoured Cable
Fire Resistant SWA Cable (NH-YJV32)
Factory-direct 0.6/1 kV mica-tape fire resistant armoured cable for circuits that must stay live during a fire
NH-YJV32 is a copper-conductor fire resistant power cable built with a mica tape barrier under XLPE insulation and a galvanised steel wire armour over the inner sheath. The mica barrier keeps the circuit energised while the cable is burning, and the steel wire armour carries the mechanical load for direct burial and vertical riser runs. Supplied at 0.6/1 kV in 3-core, 4-core and 3+1 core builds.
Fire Resistant SWA Cable (NH-YJV32) supply scope
NH-YJV32 is an order-specific fire-resistant armoured construction: copper conductor, mica fire barrier, XLPE insulation, inner sheath, galvanised steel wire armour and outer sheath. The numeric tables on this page are separated by NH-YJV32, NH-YJV22 and medium-voltage NH-YJV construction so that values from one build are not applied to another.
The NH prefix indicates a mica-taped fire-resistant construction, but it does not by itself state the fire-test method, duration or circuit-integrity class. Name the exact fire-test clause in the project specification and obtain its confirmation in the quotation and order documents. This page does not claim a blanket CB, UL, CSA or third-party certificate for every NH-YJV32 size.
Key features
- Mica tape fire barrier applied directly over the conductor
- XLPE insulation, 90 °C continuous conductor temperature
- Galvanised steel wire armour (SWA) for direct burial and riser support
- Flame retardant PVC outer sheath
- Copper conductor, solid class 1 / stranded class 2 / flexible class 5
- 250 °C maximum conductor temperature under short circuit
Typical applications
- Fire pump and sprinkler booster circuits
- Smoke extraction and pressurisation fans
- Fire alarm and emergency lighting distribution
- Emergency lift and evacuation lift supplies
- High-rise vertical riser distribution
- Tunnel and metro emergency power circuits
NH-YJV32 — 0.6/1 kV, Copper, Mica Tape + XLPE, Steel Wire Armoured
Source: Huanghe factory technical data sheet (enquiry TDS “5.22 NH-KVVR / NH-YJV32”) — values as supplied
These figures come from a stamped factory data sheet, not from the printed catalogue. Mica barrier is 0.15 mm × 2 layers on every size below. Confirm the build on your order.
Custom sizes available on request — send us your project specification.
| Cores × Section (mm²) | Overall Dia. (mm) | Weight (kg/km) | Current — In Ground (A) | Current — In Air (A) | Max. DC Resistance at 20 °C (Ω/km) |
|---|---|---|---|---|---|
| 3×4 | 16 | 360 | 45 | 34 | ≤4.61 |
| 3×6 | 18 | 450 | 57 | 43 | ≤3.08 |
| 4×4 | 18 | 450 | 45 | 34 | ≤4.61 |
| 4×6 | 20 | 500 | 57 | 43 | ≤3.08 |
| 3×16 | 25 | 800 | 105 | 83 | ≤1.15 |
| 3×25 | 28 | 1300 | 125 | 105 | ≤0.727 |
| 3×25+1×16 | 31 | 1500 | 125 | 105 | ≤0.727/1.15 |
| 3×50+1×25 | 43 | 2300 | 185 | 160 | ≤0.387/0.727 |
| 3×120+1×70 | 48 | 3200 | 300 | 265 | ≤0.153/0.268 |
NH-YJV22 — 0.6/1 kV, Copper, Mica Tape + XLPE, Double Steel Tape Armoured
Source: Huanghe factory technical data sheet (enquiry TDS “YJV22 3+1芯、3芯参数”) — values as supplied
Steel tape armour (22) instead of steel wire armour (32). Same mica + XLPE core, lower weight, lower mechanical rating.
| Cores × Section (mm²) | Overall Dia. (mm) | Weight (kg/km) | Current — In Ground (A) | Current — In Air (A) | Max. DC Resistance at 20 °C (Ω/km) |
|---|---|---|---|---|---|
| 3×35+1×16 | 30 | 1622 | 155 | 145 | 0.524/1.15 |
| 3×50+1×25 | 31 | 2038 | 185 | 175 | 0.387/0.727 |
NH-YJV — 7.2/12 kV, Copper, Mica Tape + XLPE, Copper Tape Screened
Source: Huanghe factory technical data sheet (enquiry TDS “5.22 NH-KVVR / NH-YJV32”) — values as supplied
Medium voltage fire resistant build: conductor screen + mica + XLPE + insulation screen + copper tape screen + flame retardant PVC sheath. Test voltage 28 kV/5 min.
| Cores × Section (mm²) | Overall Dia. (mm) | Weight (kg/km) | Current — In Ground (A) | Current — In Air (A) | Max. DC Resistance at 20 °C (Ω/km) |
|---|---|---|---|---|---|
| 3×95 | 53 | 5000 | 265 | 255 | ≤0.193 |
| 3×185 | 66 | 7500 | 380 | 375 | ≤0.0991 |
Need a size, core count or armour type not listed above?
The full NH-YJV / NH-YJLV range covers 0.5–1000 mm² in 1, 2, 3, 4, 5, 3+1, 3+2 and 4+1 core builds, unarmoured (NH-YJV), steel tape armoured (NH-YJV22) and steel wire armoured (NH-YJV32), with PVC or LSZH sheath. Send us the cores, cross-section, voltage, armour type and destination port and we will return a stamped data sheet with dimensions, drum lengths and shipping weights.
Information needed for an NH-YJV32 quotation
- Exact model and rated voltage from the cable schedule
- Number of cores, nominal section and conductor class
- Fire-test standard, duration and circuit-integrity requirement
- Steel wire armour and outer-sheath requirements
- Length per size and preferred drum length
- Destination port and order-specific inspection documents
Fire Resistant SWA Cable (NH-YJV32) gallery
Factory & delivery capability
Real photos from our production facility — from raw material to container loading.
Production Line
Quality Testing
Warehouse & Stock
Drum Packaging
Container Loading
Ready to Ship
Frequently asked questions about Fire Resistant SWA Cable (NH-YJV32)
Q.What does the NH prefix mean in NH-YJV32?
NH is the Chinese type designation for fire resistant (耐火) construction — a mica tape barrier is applied under the insulation so the circuit keeps working while the cable burns. It is a different property from flame retardant (ZR / ZC), which only limits flame spread and does not keep the circuit alive.
Q.What is the difference between NH-YJV22 and NH-YJV32?
Armour type. 22 is double steel tape armour, 32 is galvanised steel wire armour. Steel wire armour takes higher tensile load, so it is specified for direct burial, vertical risers and any run where the cable carries its own weight. Steel tape is lighter and cheaper where mechanical protection is the only requirement.
Q.Do you supply an LSZH sheathed version?
Yes — WDZN-YJY and WDZN-YJY22 / WDZN-YJY32 are the halogen-free low-smoke equivalents, available 0.6/1 kV through 26/35 kV. See our low-smoke fire resistant page for factory data sheet figures.
Q.What conductor classes are available?
Copper solid class 1, stranded class 2, or flexible class 5. Aluminium (NH-YJLV) is also available. The data sheet figures above are for the build quoted on that specific enquiry — confirm your conductor class when ordering, since it changes overall diameter and weight.
Q.What are the MOQ and lead time?
MOQ is 500-1,000 metres per size for standard constructions, or 2,000-5,000 metres for custom specifications. Lead time is 10-15 days for standard sizes depending on drum quantity and whether the cross-section is in stock. Send your cable schedule for a firm delivery date.
Q.What packaging do you use for export?
Wooden drums for export, marked with cable type, cross-section, length and your shipping marks. Typical drum lengths are 100 m, 200 m, 500 m or 1000 m — specify your preference with the order.
Related products and how they differ
WDZN-YJY low-smoke fire-resistant cable
Use this family when the specification requires both a mica fire barrier and a halogen-free low-smoke sheath.
View specifications →ZC-YJV flame-retardant cable
Use the FR / ZC range when limiting flame spread is required but circuit survival during a fire is not specified.
View specifications →Standard YJV32 SWA cable
Use the standard armoured range when no mica fire-resistant barrier is required.
View specifications →Related Technical Guides
Learn more about Fire Resistant SWA Cable (NH-YJV32) specifications, installation, and sourcing.
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Read guide →Ready to source Fire Resistant SWA Cable (NH-YJV32) from the factory?
Send your specs — voltage rating / conductor size / cores / armour / length / destination port. Quote within 24 hours.
Fire authority approval needs documentation? IECEE CB Certificate CN74210 and type test reports