LSZH Cable Manufacturer in China

Honest Cable provides a comprehensive range of LSZH cables that perfectly suits your specific project applications. We guarantee their high-durability and fire-resistance features.

LSZH (Low Smoke Zero Halogen) Cables

The LSZH or Low Smoke Zero Halogen defines cable jacket materials featuring fire-retardant and non-halogenated properties. It produces decreased smoke levels and toxic fumes without acid gases. Since LSZH is non-halogenated, these cables are free from Chlorine, Astatine, Fluorine, and Iodine. These mentioned elements are all capable of being toxic and corrosive when combustion occurs.

Honest Cable professionally manufactures a series of LSZH cables that provides a full range of services for numerous utilizations, including across tunnels and below-the-ground rail networks. Also, we can customize LSZH cable components according to our customer’s necessities. Our company has an R&D team that manages research, improves, and produces rigid and flame retardant cables. 

                            Technical Specification
Cable TypeLSZH (Low Smoke Zero Halogen) Cable
GaugeFull range gauges, depending on application needs
VoltageThe range identifies according to utilization requirements
TemperatureWide range of temperature choices based on usage
Standards & Verified CertificationISO/IEC11801, ANSI/TIA-568-2, Fire Classification Reaction-Dca, ETL & DELTA certified, etc.
Insulated LSZH Cables

Insulated LSZH (low smoke zero halogens) cables are covered with a special thermoplastic jacket—making this type of insulation flame retardant. 

LSZH Coaxial Cable

The LSZH Coaxial cable with low-smoke properties was developed in materials that had a high resistance to fire while maintaining performance.

Multicore LSZH Cable

LSZH materials are used to insulate the Multi-core cable. This cable exceeds industry and military standards in almost any configuration or function.

Low Voltage LSZH Cable

The LSZH Low Voltage Cable is particularly suited for usage in commercial and industrial applications where efficiency and risk-safe procedures are required.   

H07ZZ-F LSZH Rubber Cable

The H07ZZ-F LSZH rubber cables are typically made from aluminum or copper conductor. They are applicable for industries like marine, automation, etc.

LSZH Jacket Lan Cable

The LSZH jacket lan cables are widely used for cameras, networks, and computers. They have about 1000ft, 305m, or customized length according to requests.

LSZH Cable Material Availability

Honest Cable manufactures high-quality LSZH cables with the availability of the following materials.

  • Olefin-based
  • TPU (Thermoplastic Polyurethane)
  • Silicone
  • TPE (Thermoplastic elastomers)
Material
Application

LSZH Cable - Potential Applications

Since LSZH cable has low smoke and is non-toxic, they are preferred often for various applications, including the following:

  • Subway & railway stations
  • Airplanes and airports
  • Underground public places or poorly ventilated areas
  • Sports buildings and entertainment
  • Hotels and apartments
  • Data centers
  • Hospital buildings
  • Bus stations and other massive facilities

LSZH Cables Features

Honest Cable provides low smoke and halogen-free cable insulation and jacket with the following features.

  • Numerous conductors
  • Different shielding options
  • Different colors
  • Numerous configurations
  • Composite constructions
PUR CABLE
Differences

LSZH and PVC Cable Differences

In terms of physical features, the LSZH and PVC have immense differences. The PVC has soft patch cords, while the LSZH ones have more rigid, containing fire retardant compounds. LSZH cables are more aesthetically pleasing. 

The PVC cables are made from polyvinyl chloride with jackets that emit heavy black smoke and hydrochloric acids when get burned. Unlike PVC cables, the LSZH ones have fire-resistance jackets and never give off toxic smoke even if burning.

LSZH Cable Supplier
Choose High-Quality LSZH Cables from Honest Cable

Honest Cable can provide your required LSZH cable specifications to give efficient functions and advantages to your utilized projects. Contact our team directly, and expect quick responses!

LSZH Cable – The Ultimate FAQ Guide

Low Smoke Zero Halogen or LSZH is a common term you’ll come across when buying or working with cables.

It’s not merely a definition of materials or characteristic of cable, but a highly important distinction, which could ultimately mean the difference between life and death.

LSZH cables are also sometimes referred to as ZHLH or simply halogen-free cables.

This definition of the cable basically helps determine the materials that go into the insulation and sheathing of the cable.

Any materials that are not classified as LSZH do not make the cut.

LSZH Cable

Countries and industries across the world have strict standards for cable materials, and LSZH is becoming increasingly popular because of the safety these cables offer.

What is LSZH Cable?

Low Smoke Zero Halogen or LSZH cables are those that don’t contain any halogens in their material composition and don’t produce smoke in case of fire.

These cables produce a very limited amount of smoke and toxic gases, especially acid gases.

These cables are good for use indoors and in hazardous environments where the threat of fire and harmful gases may be high.

They are essentially fire-retardant cables, too, as they self-extinguish.

However, they are not completely fire-resistant, which means they can burn and bear damage if the fire from the source is continuous.

Low smoke and zero halogen are two separate elements.

So it’s important to understand them individually.

Low Smoke

Low smoke pertains to the cable jacket producing limited smoke.

It doesn’t mean that it won’t burn or not produce any smoke at all.

It only means that the smoke wouldn’t be of dangerously high levels to become toxic, reduce visibility, and hamper rescue efforts.

This is entirely dependent on the jacketing material in the cable, as the sheath is the first layer to come in contact with fire.

In most cases, the flame isn’t as dangerous as the smoke and gas it produces.

In indoor settings, most casualties in fire may be caused because of the smoke because it creates respiratory difficulties, reduces the visibility of exit routes, and creates panic.

For instance, tests show that PVC (polyvinyl chloride) can reduce visibility by as much as 50 percent when burning. In half an hour, it can become as high as 90 percent.

This makes PVC high-smoke material; however, there are low-smoke versions of it with appropriate additives.

Many international standardization and certification bodies have specific tests and benchmarks to gauge the smoke emission of materials.

Cables must pass those tests to qualify as low smoke cables.

Zero Halogen

Zero halogen simply means that no component, primarily insulation and sheathing, should have any halogens in their composition.

Halogens consist of five elements, including Chlorine (Cl), Bromine (Br), Iodine (I), Florine (F), and Astatine (At).

The reason why halogens are emitted from cables is that when the cable is on fire, these can produce toxic gases or liquids, such as highly acidic HCl.

The best example of a material that’s not zero halogens is PVC, as it contains Chlorine.

Tests show that PVC can produce as much as 30 percent HCl in case of a fire.

What is the Difference Between LSZH Cable and LSF Cable?

Some cables are labeled as LSF (low smoke and fume), which is different from LSZH.

It only covers part of the equation, as LSF cables might still have halogens in their materials.

For instance, PVC cables that are low smoke are LSF but not LSZH.

Those cables still pose the threat of halogen gases when burning.

Usually, LSF cables have additives to help make them low smoke and low halogen, but they are not zero halogens.

LSZH cables usually follow even stricter standards than LSF cables.

LSF cables can emit halogen acids far beyond the limits set for LSZH cables.

LSZH Cable

LSZH Materials

There are two kinds of LSZH materials essentially: thermoplastic LSZH and thermoset LSZH.

Thermoplastic LSZH materials can be molded by heating many times, whereas thermoset LSZH materials can only be molded once.

Hence, they are not recyclable.

While PVC is the most common thermoplastic, it’s not an LSZH, as it contains Chlorine.

On the other hand, ethylene-propylene rubber (EPR) and crosslinked propylene (XLPE) are LSZH.

These two materials are very common in cables along with PVC.

It’s worth noting that LSZH thermoset materials may not have as high resistance to flames as chlorinated thermosets.

This is one tradeoff when using LSZH cables, as their thermal range may be slightly lower than those with halogens.

That said, crosslinked materials such as XLPE have a much higher thermal range.

The LSZH material you choose comes down to other factors as well, such as voltage rating of the conductor, environmental conditions, and application-specific requirements.

However, the material must meet the set requirements and tests.

What are the Applications of LSZH Cable?

LSZH cables are used both indoors and outdoors, but mostly indoors where it’s usually hard for the smoke to escape.

Just by that requirement, the applications of such cables are many.

Here are some examples:

  1. Public areas
  2. Houses
  3. Industrial plants
  4. Tunnels and underground rail networks
  5. Transport (cars, trucks, buses, aircraft, trains, and ships)

LSZH Cable

LSZH cables may be used in any place where the laws and regulations require cables to use LSZH materials.

Many countries and city governments, as well as safety boards, mandate that contractors and construction companies use such cables for all indoor wiring.

This is why LSZH is becoming a standard for indoor cable applications.

What are the Advantages of LSZH Cable?

There are obvious advantages to using LSZH cables:

  • Less Smoke: The fact that LSZH produces very limited smoke makes it ideal for indoor areas and those with poor ventilation. If a fire breaks out in a home and the cables catch on fire, if they are low smoke, they won’t add to the smoke already being produced by other structures and items in the home.
  • Self-extinguishing: LSZH cables are mostly fire-retardant, which means they don’t propagate fire. While they may not resist it completely, they do their best to avoid getting burned if the fire is not sustained.
  • No Harmful Gases: Even if the cables have caught fire and are burning, they won’t produce any harmful gases that may poison the people on the premises. This makes these cables so much better than cables that have halogens, such as PVC cables.
  • No Delay in Rescue: Smoke can hamper rescue efforts in case of a fire by reducing the visibility acutely. It may make it hard for people trapped to get to exit routes and for fire rescue teams to get inside the premises. With low smoke, the visibility may be just enough for the rescue teams to conduct their safety operations and save lives.

What are the Standards of LSZH Cable?

There isn’t any universal definition or standard when it comes to LSZH cables.

However, most international standardization bodies have tests and standards for cable manufacturers to comply with in order to certify their cables as LSZH.

Manufacturers must test the cables according to the test describes by those standards.

For instance, the standard BS 61032 prescribes a test for smoke density.

The test is performed in a 3 x 3 x 3 cubic meter chamber.

A white light is passed through the chamber at a particular height so as to measure how the smoke hinders the transmittance of light.

The test requires the minimum transmittance to be 60 percent.

Similarly, another British cable standard BS EN 60754 requires HCl emissions from the cable to be under 0.5 percent for it to quality as zero-halogen.

LSZH Cable

International Electrotechnical Commission (IEC) has its own set of standards and tests for qualifying cables as LSZH.

Here are the three most frequently used standards in the cabling industry:

  • IEC 60332-1 (Flammability)
  • IEC 61034-2 (Smoke emission)
  • IEC 60754-1 and IEC 60754-2 (Acid gas emissions)

The IEC 60332-1 test for flammability is similar to that of BS 61032, which involves a 3 cubic meter chamber and light transmittance.

The IEC 60754-1 test involves burning the cable for 60 minutes and collecting any halogen acid produced.

It should not exceed 5 mg/g.

The second part, IEC 60754-2, measures conductivity and pH.

The pH value should not be less than 4.3 and the conductivity value should not exceed 10 uS/mm.

LSZH cables also comply with the European Union (EU) Restriction of Hazardous Substances (RoHS) directive.

Other standardization bodies around the world may have similar tests for cables to qualify as LSZH.

The cables are not officially LSZH unless they meet the standards set by one of these bodies.

Conclusion

LSZH cable plays a vital role in ensuring the safety of infrastructure and human life.

While they are not immune to fire, they can reduce the danger.

Low smoke and no risk of acidic gases and fluids make these cables a safer option for indoor cabling.

There are strict standards for such cables, especially on marine shipboard, that must be fulfilled for the cable to be labeled LSZH.

The cable manufacturers must comply with those specific standards for the market they are serving.

As for the cable type and materials, that depends on the application they are for.

Send Your Inquiry Today
Scroll to Top