Low smoke zero halogen (LSZH) polyolefin sheath material is a type of insulation material used in cable manufacturing. It is made of a thermoplastic polymer that is designed to have minimal smoke emission and no toxic gas release when exposed to fire. LSZH polyolefin sheath material is becoming more popular in the cable manufacturing industry due to its numerous advantages over traditional insulation materials.

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125' irradiation cross-linked LSZH polyolefin sheath material for photovoltaics

advantages

Fire Safety

The primary advantage of LSZH polyolefin sheath material is its fire safety properties. LSZH materials produce very little smoke and no toxic gases when exposed to fire. This is a crucial advantage in areas where large numbers of people may be present, such as public buildings, hospitals, and schools. LSZH materials can also help prevent fires from spreading quickly and can make evacuation easier.

Environmental Safety

LSZH polyolefin sheath material is considered an environmentally friendly insulation option. It does not contain halogens or other toxic materials, which can be harmful to the environment. When LSZH materials are burned, they produce very little smoke and no toxic gases. This makes them an excellent option for use in environmentally sensitive areas, such as near water sources or wildlife habitats.

Corrosion Resistance

LSZH polyolefin sheath material is highly resistant to corrosion. This makes it an excellent option for use in harsh environments, such as coastal regions, where saltwater corrosion is a significant problem. LSZH materials can also resist damage from chemicals, oils, and other harsh substances, making them ideal for use in industrial applications.

UV Resistance

LSZH polyolefin sheath material is highly resistant to UV radiation. This makes it an excellent option for use in outdoor applications, where exposure to sunlight and other weather elements can cause damage to insulation materials.

Flexibility

LSZH polyolefin sheath material is highly flexible and can be easily bent or shaped without cracking or breaking. This makes it an excellent option for use in applications where the cable needs to be routed through tight spaces or around corners.

low smoke Emission

LSZH polyolefin sheath material produces very little smoke when exposed to fire. This is an essential property in applications where smoke could cause visibility problems or hinder evacuation efforts.

Cost-Effective

LSZH polyolefin sheath material is a cost-effective option compared to other insulation materials, such as PVC. While the initial cost of LSZH materials may be slightly higher than PVC, the long-term benefits of LSZH materials, such as fire safety, environmental safety, and corrosion resistance, make it a more cost-effective option over time.

Recyclable

LSZH polyolefin sheath material is a recyclable material. This makes it an environmentally friendly option that can be reused or repurposed after its initial use.

In conclusion, LSZH polyolefin sheath material offers numerous advantages over traditional insulation materials. It is a cost-effective, environmentally friendly, and safe option for use in a variety of applications. LSZH materials are becoming increasingly popular in the cable manufacturing industry due to their excellent fire safety properties, environmental safety, and resistance to corrosion and UV radiation. The flexibility and Low Smoke Emission properties of LSZH materials make them an ideal option for use in a wide range of applications.

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Cable Jacket: Should I Choose LSZH or PVC?

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When talking about communication cables, we commonly use terms like LSZH and PVC to describe them. These two terms describe the chemical compounds used in production of the cables. As we might be rather familiar with these widely used terms, do you exactly know what they really mean? Or more importantly, which one is better for your project? In this article, we are going to explain these frequently asked questions, by analyzing and comparing LSZH and PVC cables.

What LSZH and PVC Stand for?

LSZH ' Short for low smoke zero halogen, LSZH is a kind of cable built with a jacket material free from halogenic materials (such as chlorine and fluorine), since the toxic nature of these chemicals when burned. The term 'low-smoke, zero-halogen' describes two distinct properties of a cable compound. The term 'low- smoke' describes the amount of smoke which a compound emits when burned, while 'zero-halogen' describes the amount of halogens used to make the compound. Terms like LSOH, LSHF and LSNH are all proper references for cables possessing low-smoke and zero-halogen properties.

PVC ' Polyvinyl chloride (vinyl), a general-purpose plastic jacket material used for cables. Features low in cost and flexible, PVC cable is widely used in applications such as computers, communications and low voltage wiring. In the world of cabling, 'PVC' is often used to denote a cable that is not suitable for use in a plenum airspace. PVC can potentially be dangerous in a fire situation, releasing heavy smoke and hydrogen chloride gas, which poses a great threat to human health electronic devices. PVC cables often have a CM, CMG, or CMR rating as defined by the National Electrical Code (NEC).

Differences Between LSZH and PVC Cable

Judging from the physical appearance, the difference between LSZH and PVC cable is very distinct. A PVC cable feels soft and it is smooth, whereas an LSZH cable feels rough since they contain the flame retardant compound and it is stiffer. LSZH cables are more aesthetically appealing than PVC cables. In addition to this, LSZH cable differs from PVC one in at least three aspects:

Cost: LSZH cables are slightly higher in cost than some PVC cables, but they are much safer when it comes to human health and sensitive and expensive electronic equipment. And this should be considered when comparing the cost.

Flexibility: Comparing with PVC compounds, there is a limited range of compound flexibility available for LSZH compounds, so LSZH cable is not recommended for robotic or continuous flex applications.

Heat: When a PVC cable is set on fire, it emits chemical fumes, acids and other toxic gases, which are both corrosive and harmful to human beings and environments. As for LSZH cable that has a flame-resistant jacket, it doesn't emit these chemical substances even if it burns or exposed to high sources of heat. And it can reduce the amount and density of the smoke.

When Do I Use LSZH or PVC?

It is feasible that LSZH and PVC have equally effective performance in modern buildings. So the decision on which one to choose actually depends on the situation, that is to say, where you are going to run the cable.

PVC cable has been used in built environment for power and control applications for decades. It is commonly used for horizontal runs from the wiring center, or for vertical runs between the floors ' but only if the building features a contained ventilation system running through the duct work.

LSZH cable would be more appropriate for places where fire presents a hazard to occupants. We known that the primary danger in the event of a fire is not the fire itself but the smoke and gas produced. Therefore, it is vital that the materials and products that are installed contribute as little smoke and gas as possible when burnt. LSZH cable can be employed in the following situations:

• Confined spaces with large amounts of cables in close proximity to humans or sensitive electronic equipment, such as submarines and ships.
• Mass transit, central office facilities and telecommunication applications.

Conclusion

Even though PVC cable still reigns supreme in wire and cable industry, the use of which has decreased over the past years. On the other hand, LSZH cable technology has advanced significantly, it is well suited to some applications mentioned in this article. Your cabling choice always relays on your specific condition, while to consult with wire and cable experts can also be beneficial.

Source: http://www.china-cable-suppliers.com/cable-jacket-choose-lszh-pvc.html