WDZ-YJY Low Smoke Zero Halogen Power Cable
LSZH Flame-Retardant • XLPE Insulation • PE Sheath • Non-Armored
Lightweight Design
WDZ-YJY is a halogen-free, low-smoke power cable designed for
non-direct-burial installations such as conduits, cable trays and
overhead routes. It combines a low smoke zero halogen
flame-retardant system (WDZ), cross-linked polyethylene insulation,
polyethylene outer sheath, and high-purity copper conductors to
deliver safer performance in fire conditions, environmentally
friendly non-toxic materials, and a light, flexible, non-armored
structure that cuts installation and logistics costs.
Ideal wherever you need safety + environmental compliance + easy
installation in one cable.
Model Decoding - Eco-Friendly, Flame-Retardant & Lightweight
What "WDZ-YJY" Stands For
| Code | Component | Function & Key Advantage |
|---|
| WDZ | Low Smoke Zero Halogen Flame-Retardant System | Halogen-free, low-smoke formulation. During combustion, smoke
density is low and no toxic halogen gases are released. Corrosive
impact on equipment is minimal. Designed to meet flame-retardant
requirements similar to Class B, with options to upgrade to Class A
depending on specification. |
| YJ | Cross-Linked Polyethylene (XLPE) Insulation | Continuous operation up to 90°C, with low dielectric loss and
strong resistance to aging. High insulation resistance (≈ ≥ 100
MΩ*km) supports long-term reliability and reduces cracking risk.
Power transmission efficiency is significantly improved compared
with conventional insulation materials. |
| Y | Polyethylene (PE) Sheath | Non-toxic and environmentally friendly. Offers excellent weather,
UV and low-temperature resistance (around -40°C without cracking).
No plasticizer migration, and compliant with RoHS-type
environmental requirements. |
Compared to armored LSZH cables (e.g. WDZ-YJY23): WDZ-YJY omits the double steel tape armor, making the cable
lighter, more flexible and cheaper to install—perfect for
non-direct-burial applications like building conduits, trays and
overhead lines—while keeping the same LSZH safety concept.
Core Advantages - Built for Safe & Lightweight Power Distribution
LSZH Fire Performance - Safety & Environmental Protection in One
WDZ-YJY uses a low smoke, halogen-free flame-retardant system:
- Flame-retardant behavior: Designed to self-extinguish once the ignition source is removed,
preventing flame spread and molten dripping that could extend fire
zones.
- No halogen acids: During combustion, no chlorine, bromine or other halogen acid
gases are released, helping prevent choking fumes, poisoning and
severe irritation.
- Low smoke generation: Limited smoke output means clearer visibility in escape routes,
providing crucial time for evacuation and fire rescue.
- Low corrosion: Combustion by-products are only mildly acidic (pH typically ≥
about 4.3), helping protect cable trays, metal structures and
sensitive devices and reducing the cost of post-fire refurbishment.
Non-Armored & Lightweight - Faster, Easier, More Efficient
Installation
Compared with equivalent armored LSZH cables, WDZ-YJY removes the
steel tape armor:
- Weight reduction of roughly 25-30%, making the cable easier to carry, pull and route. Many sections
can be installed by a single technician.
- No need for cranes or heavy lifting equipment in most cases,
helping boost installation productivity by around 30%.
- Excellent flexibility: Minimum bending radius of about 15 * cable diameter, ideal for
pre-embedded conduits in walls and slabs, tight turns and
multi-layer cable trays, and complex routing in shafts and
equipment rooms.
- Logistics savings: Lower mass cuts transport expenses by around 20%, which is
especially attractive for smaller or multi-batch projects.
- Overall, the lighter design can reduce installation labor costs by
approximately 15-20% compared with armored alternatives.
XLPE + PE System - Stable Operation & Strong Weather Resistance
- XLPE Insulation: Working temperature range roughly -40°C to +90°C, low dielectric
loss (tan δ around ≤ 0.003), reducing transmission losses. Suitable
for 0.6/1 kV distribution networks in buildings and industrial
facilities.
- PE Sheath: Environmentally friendly and non-toxic, fully aligned with green
building concepts. Better anti-aging and UV resistance than
standard PVC sheaths. Designed to avoid obvious cracking or fading
after long-term outdoor exposure. Under indoor conditions, service
life can typically exceed 25 years when properly installed.
- High-Purity Copper Conductor: Made from high-purity electrolytic copper (conductivity close to
99.97% IACS). Very low resistance, reduced heat build-up and
voltage drop. Stable, reliable terminations which help cut down on
maintenance checks and retightening work.
High Compliance & Broad Coverage - For Most Non-Buried LSZH
Applications
WDZ-YJY is designed for use in locations where safety,
environmental control and code compliance are essential. Supports
the flame-retardant and environmental design concepts found in
building and electrical design codes, fire acceptance standards for
public and commercial buildings, and halogen-free and low-toxicity
requirements in technical environments.
Installation methods include:
- Conduit (pre-embedded or surface mounted)
- Cable trays and ladders
- Overhead within buildings or protected outdoor routes
- Wall-embedded circuits in residential and commercial projects
This allows WDZ-YJY to cover the majority of non-direct-burial LSZH
cable needs in offices, residential blocks, clean production areas,
IT rooms and more.
Technical Snapshot - Typical Specifications
| Cores * Section (mm²) | Conductor Material | Insulation Thickness (mm) | Sheath Thickness (mm) | Approx. Outer Diameter (mm) | Rated Voltage (kV) | Approx. Weight (kg/km) | DC Resistance at 20°C (Ω/km) |
|---|
| 3 * 10 + 1 * 6 | High-purity copper | 1.0 | 1.8 | 24.5 | 0.6/1 | 380 | ≤ 1.83 |
| 3 * 16 + 1 * 10 | High-purity copper | 1.0 | 1.8 | 27.8 | 0.6/1 | 510 | ≤ 1.15 |
| 3 * 25 + 1 * 16 | High-purity copper | 1.2 | 2.0 | 32.2 | 0.6/1 | 720 | ≤ 0.74 |
| 3 * 50 + 1 * 25 | High-purity copper | 1.4 | 2.2 | 40.5 | 0.6/1 | 1230 | ≤ 0.38 |
| 4 * 120 | High-purity copper | 1.6 | 2.5 | 51.2 | 0.6/1 | 2280 | ≤ 0.16 |
| 5 * 240 | High-purity copper | 2.0 | 3.0 | 70.8 | 0.6/1 | 4550 | ≤ 0.08 |
Customization options:
• 1-5 cores, 1.5-400 mm² cross-section range
• Flame-retardant grades WDZ-A / WDZ-B / WDZ-C can be specified per
project
• Voltage class options up to around 10 kV available upon request
• Conductor options include oxygen-free copper (near 99.99% IACS)
for highly demanding projects
• Sheath upgrade available to enhanced LSZH flame-retardant
polyolefin (WDZ-YJY-type formulations)
Where WDZ-YJY Fits Best - Application Scenarios
- Office Buildings & Commercial Complexes: Ideal for conduit and tray installations in multi-storey office
towers, business centers and standard commercial floors with
complex wiring.
- Residential Communities & Apartment Blocks: Suitable for wall-embedded and concealed wiring in living spaces,
combining safety, low smoke and non-toxic materials.
- Data Centers, IT Rooms & Control Rooms: High equipment density and sensitive electronics benefit from low
smoke and halogen-free characteristics, reducing corrosion risk and
downtime in fire incidents.
- Electronics Workshops & Small / Medium Plants: Meets many halogen-free and low-toxicity requirements in clean or
semi-clean production environments.
- Schools, Clinics & General Medical Facilities: Used in public buildings with high occupancy, supporting fire
acceptance requirements and limiting secondary harm to people.
- Indoor / Protected Overhead Lines: Lightweight design makes overhead cable erection easier, while the
PE sheath provides good resistance to weathering for protected
outdoor runs.
- Device & Equipment Power Cabling: Flexible for distribution from panels to equipment, especially
where environmental and safety performance are part of the design
brief.
For direct burial, rocky terrain, or heavy mechanical load paths, an LSZH armored solution like WDZ-YJY23 is recommended as a
better match.
Suggested FAQ for Your Product Page
Q1: What is the main difference between WDZ-YJY and WDZ-YJY23?
A: WDZ-YJY is a non-armored, lightweight LSZH cable for conduits,
trays, overhead and wall-embedded wiring. WDZ-YJY23 adds double
steel tape armoring for direct burial and mechanically demanding
routes. Both share the same LSZH safety concept; the choice depends
mainly on installation conditions.
Q2: In which projects is WDZ-YJY typically preferred?
A: It is commonly used in office buildings, standard residential
complexes, data rooms, equipment rooms and clean industrial areas
where fire safety and environmental requirements are strict but no
direct burial or heavy mechanical stress is expected.
Q3: Does WDZ-YJY meet green building requirements?
A: Yes. The halogen-free, low-smoke formulation, PE sheath and
high-purity copper conductors support the environmental aspects of
many green building and RoHS-type frameworks, helping reduce toxic
emissions during fire and supporting safer indoor environments.
Q4: Can WDZ-YJY be installed outdoors?
A: Yes, provided it is used in non-direct-burial, appropriately
supported configurations. The PE sheath offers solid resistance to
UV, aging and low temperatures, making it suitable for trays,
conduits and protected overhead routes in outdoor or semi-outdoor
locations.
Q5: What accessories should be used with WDZ-YJY?
A: Use terminals, joints and accessories tested or recommended for
copper LSZH cables. Correctly matched accessories help maintain the
LSZH safety profile and mechanical integrity of the system.
Q6: How can I select the right cross-section?
A: Provide load current, route length, installation method, ambient
temperature and applicable standards. Based on these, the
engineering team can calculate the optimal cross-section to meet
current-carrying capacity, voltage drop and safety margins.
Service of JinHong Company
Over Productions Service:
JinHong has a wide range of cable and conductor products for you to
choose from. We will provide caring services and professional
project solutions for everyone who needs them.
Quality Certification Services:
JinHong cable products are manufactured according to GB, IEC, BS,
NFC, ASTM, DIN, and other international standards. Our technical
team can customize cable products that meet your requirements
according to your needs.
Profession Customer Service:
JinHong provides free professional consulting services to provide
you with one-stop project solution services and rapid product
delivery solutions.
Delivery And Shipping Services:
While we at JinHong provide high-quality cables, we also provide
good delivery solutions. While ensuring the safe delivery of
products, we provide the best packaging and transportation
solutions, greatly reducing customers’ transportation costs.
Packaging of JinHong:
JinHong cable packaging is provided in the form of wooden reels,
corrugated boxes, and coils. The cable ends are sealed with BOPP
self-adhesive tape and a non-hygroscopic sealing cap to protect the
cable ends from moisture. We can print the required marks on the
outside of the barrel with waterproof material according to
customer requirements.
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