Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
H05Z-K H07Z-K Halogen Free Flame Retardant Cables
Voltage: H05Z-K 300/500V (0.5-1.0mm²), H07Z-K 450/750V (1.5-240mm²), test 2,500V
Conductor: Class 5 flexible bare copper, VDE-0295 / IEC 60228 / BS 6360 cl.5
Insulation: Cross-link polyolefin EI5 (thermosetting LSOH), 90°C continuous
Bending: 8×D (stiffer than PVC 4×D — polyolefin trade-off), -40°C static rating
Insulation Resistance: 10 MΩ·km — ~1,000× PVC wire (0.01 MΩ·km)
Fire Safety: Zero HCl/HF/HBr gas — IEC 60754-2 / EN 50267 certified, ROHS
Standard: HD 22.9 S2, VDE-0282 Part-9, BS 7211, CE LVD
Product Overview
H05Z-K / H07Z-K Halogen Free Flame Retardant Cables are single-core Class 5 flexible copper conductor cables with cross-link polyolefin EI5 LSOH (Low Smoke Zero Halogen) insulation manufactured to HD 22.9 S2, VDE-0282 Part-9, and BS 7211. The harmonised designation decodes: H = CENELEC harmonised, 05 = 300/500V or 07 = 450/750V, Z = halogen-free cross-link polyolefin, -K = flexible Class 5 conductor. Unlike PVC cables which emit dense, toxic hydrogen chloride gas (HCl) when burning, H05Z-K/H07Z-K cables produce no corrosive gases — a critical safety distinction for public and government buildings, hospitals, airports, and any installation where electronic equipment would be destroyed by the acidic byproducts of PVC combustion. The thermosetting polyolefin EI5 insulation per BS EN 50363-5 is cross-linked — meaning the molecular structure is bonded in a three-dimensional network — delivering superior thermal stability (90°C continuous, -40°C static) and mechanical toughness at the expense of flexibility (8×D bending radius vs PVC's 4×D).
When a PVC cable burns in a server room, the HCl gas mixes with atmospheric moisture to form hydrochloric acid, which corrodes circuit boards, connector pins, and data cabling throughout the building — often causing more economic damage than the fire itself. H05Z-K/H07Z-K's zero-halogen polyolefin insulation eliminates this secondary damage mechanism entirely. The insulation resistance of 10 MΩ × km is approximately a thousand times higher than PVC (0.01 MΩ × km at 70°C — polyolefin's inherently lower dielectric loss becomes the dominant advantage in long conduit runs where cumulative leakage current must be minimised. The smoke density per EN 50268 / IEC 61034 and combustion gas corrosiveness per EN 50267-2-2 / IEC 60754-2 are explicitly tested and certified — PVC cables carry no such certification because they categorically fail both tests.
The 8×D bending radius is a real-world installation consideration — LSOH cable is inherently stiffer than PVC wire of the same cross-section due to the higher modulus of cross-link polyolefin compared to the relatively soft PVC compound. Electricians accustomed to the effortless flexibility of PVC wire will notice the difference immediately when pulling LSOH through conduit bends. The -40°C static operating temperature, however, dramatically exceeds PVC wire's 0°C lower limit — making H05Z-K/H07Z-K suitable for outdoor and unheated installations in cold climates where PVC wire would become brittle and crack during winter installation. CE marked under the Low Voltage Directive and ROHS compliant, H05Z-K/H07Z-K is the European harmonised LSOH building wire — the standard against which all other halogen-free single-core cables are benchmarked in the CENELEC market. 21 sizes from 0.5mm² to 240mm², all 100m per roll.
Conductor — Dense multi-strand orange copper, Class 5 flexible per VDE-0295 / IEC 60228 / BS 6360 cl.5 / HD 383
Insulation — Black cross-link polyolefin EI5, thermosetting LSOH per BS EN 50363-5, zero halogen emission when burned
Class 5 Flexible Copper
Fine bare copper strands to VDE-0295 Class 5, IEC 60228 Class 5, BS 6360 cl.5, HD 383. Flexible enough for panel and appliance interior routing despite stiffer LSOH insulation.
XLPE Polyolefin EI5 (Thermosetting)
Cross-link polyolefin EI5 per BS EN 50363-5 — NOT thermoplastic PVC. 90°C continuous, -40°C static, zero halogen emission, 10 MΩ·km insulation resistance.
8×D Bending — LSOH Trade-off
Twice the bending radius of PVC (4×D). Polyolefin is inherently stiffer — plan conduit routes with larger bend radii for LSOH installations.
-40°C Cold Climate Rated
Static operating down to -40°C — PVC wire embrittles at 0°C. Suitable for outdoor and unheated installations in northern European and Canadian climates.
21 Sizes 0.5-240mm²
H05Z-K (300/500V): 3 sizes 0.5-1.0mm². H07Z-K (450/750V): 18 sizes 1.5-240mm². 100m/roll, export wooden case.
Zero Corrosive Gas Emission
EN 50267-2-2 + IEC 60754-2 certified — no HCl/HF/HBr gas. Protects electronic equipment and building structure from acid corrosion damage after fire.
Technical Characteristics
| H05Z-K Nominal Voltage | 300/500V (0.5-1.0mm²) |
| H07Z-K Nominal Voltage | 450/750V (1.5-240mm²) |
| Test Voltage | 2,500V |
| Flexing Temperature | -15°C to +90°C |
| Static Temperature | -40°C to +90°C |
| Bending Radius (Flexing & Static) | 8 × outer diameter |
| Insulation Resistance | 10 MΩ × km (minimum) |
| Flame Retardant | IEC 60332.1 / EN 50265-2-1 (single cable vertical flame test) |
Applicable Standards
| Standard | Scope |
|---|---|
| HD 22.9 S2 | CENELEC harmonised document for halogen-free cross-link polyolefin insulated flexible cables rated 450/750V. Primary European standard for H05Z-K and H07Z-K. |
| VDE-0282 Part-9 | German national standard — VDE implementation of HD 22.9. VDE mark required for German and Austrian market access. |
| BS 7211 | British Standard for thermosetting insulated cables — BS implementation covering H07Z-K for the UK market under BS 7671 wiring regulations. |
| IEC 60754-2 / EN 50267-2-2 | Halogen acid gas emission test — zero HCl/HF/HBr certified. Written into the LSOH product definition: fail this test → not LSOH. |
| EN 50268 / IEC 61034 | Smoke density test — LSOH cables must maintain light transmittance above 60% during combustion to qualify. |
Global LSOH Single-Core Wire Equivalents
| Designation | Standard | Region | Insulation |
|---|---|---|---|
| H05Z-K / H07Z-K | HD 22.9 S2 / BS 7211 | EU / UK (harmonised) | Cross-link polyolefin EI5 |
| HFIX | KS C 3341 | South Korea | Halogen-free polyolefin |
| H07Z1-K | EN 50525-3-31 | EU (newer standard) | Thermoplastic LSOH |
Technical Specifications
Class 5 flexible bare copper strands per VDE-0295 Class 5, IEC 60228 Class 5, BS 6360 cl.5, HD 383. Cross-link polyolefin EI5 thermosetting insulation per BS EN 50363-5. Copper weight column shows conductor-only weight. Total weight includes insulation. All sizes single core 100m/roll.
| Cross Section (No. × mm²) | Insulation (mm) | Overall Dia. (mm) | Copper Weight (kg/km) | Total Weight (kg/km) |
|---|---|---|---|---|
| H05Z-K — 300/500V, Internal Appliance Wiring | ||||
| 1 × 0.5 | 0.6 | 2.3 | 4.8 | 9 |
| 1 × 0.75 | 0.6 | 2.5 | 7.2 | 12.4 |
| 1 × 1.0 | 0.6 | 2.6 | 9.6 | 15 |
| H07Z-K — 450/750V, Building & Industrial Wiring | ||||
| 1 × 1.5 | 0.7 | 3.5 | 14.4 | 24 |
| 1 × 2.5 | 0.8 | 4.0 | 24 | 35 |
| 1 × 4 | 0.8 | 4.8 | 38 | 51 |
| 1 × 6 | 0.8 | 6.0 | 58 | 71 |
| 1 × 10 | 1.0 | 6.7 | 96 | 118 |
| 1 × 16 | 1.0 | 8.2 | 154 | 180 |
| 1 × 25 | 1.2 | 10.2 | 240 | 278 |
| 1 × 35 | 1.2 | 11.5 | 336 | 375 |
| 1 × 50 | 1.4 | 13.6 | 480 | 560 |
| 1 × 70 | 1.4 | 16.0 | 672 | 780 |
| 1 × 95 | 1.6 | 18.4 | 912 | 952 |
| 1 × 120 | 1.6 | 20.3 | 1,152 | 1,200 |
| 1 × 150 | 1.8 | 22.7 | 1,440 | 1,505 |
| 1 × 185 | 2.0 | 25.3 | 1,776 | 1,845 |
| 1 × 240 | 2.2 | 28.3 | 2,304 | 2,400 |
Packaging & Delivery
| Parameter | Standard |
|---|---|
| Package | 100m per roll, export wooden case & pallet |
| Roll Marking | Manufacturer, H05Z-K/H07Z-K, 300/500V or 450/750V, LSOH, cross-section, length, weight, batch, HAR/CE/VDE/BS marks |
| Colour Options | Standard IEC 60446 range + LSOH identification colours (typically black for LSOH) |
| Outer Protection | Wooden case — standardised across all single-core LSOH products; ROHS compliant packaging |
| Delivery Condition | Factory-new, tested per HD 22.9 S2 / BS 7211, LSOH certified per IEC 60754-2 / EN 50267, CE marked, ROHS |
Typical Applications
H05Z-K/H07Z-K is the standard LSOH wire for European public buildings, hospitals, and any installation where toxic PVC smoke cannot be tolerated:
Hospitals & Healthcare
Internal wiring of hospital electrical systems — zero HCl gas means no corrosive damage to sensitive medical electronics after a fire event.
Public & Government Buildings
Mandatory for EU public building electrical installations — LSOH is specified in tender documents for schools, libraries, and administrative buildings.
Data Centres & Server Rooms
Zero corrosive gas emission protects servers, storage arrays, and networking equipment from HCl acid damage — the economic case for LSOH in ICT facilities.
Airports & Transport Hubs
Enclosed public spaces with high occupant density — toxic PVC smoke in an airport terminal would cause mass casualties. LSOH is non-negotiable.
Commercial Buildings
Internal wiring of appliances and equipment in commercial premises where smoke and toxic fumes threaten life and electronic equipment.
Cold Climate Installations
-40°C static rating — suitable for outdoor and unheated northern European installations where PVC wire becomes brittle at 0°C.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.