Medium voltage lszh cable
LSZH cable is Low smoke zero halogen cable. Low Smoke Zero Halogen (LSZH) - when burns there is very little smoke and fumes (compared to standard PVC the fumes contain no halogens Increasingly used in public and government buildings and where there is sensitive electronic equipment (i.e....
LSZH cable is Low smoke zero halogen cable.
Low Smoke Zero Halogen (LSZH) - when burns there is very little smoke and fumes (compared to standard PVC the fumes contain no halogens
Increasingly used in public and government buildings and where there is sensitive electronic equipment (i.e. Hospitals, Supermarkets, Airports, Control Rooms & Computer Suites) these cables are designed for increased safety in the case of a fire:
·Reduction in hazardous fumes which can cause injury when inhaled
·Reduction in corrosive chemicals which can cause damage to electronics
Historically, most cables used in installations have been insulated with PVC or similar materials. In fires, these insulation materials release chlorine gas. Chlorine is a poisonous gas and a danger to people. In addition it forms hydrochloric acid when coming into contact with water. Hydrochloric acid can have devastating effects on adjacent equipment.
To overcome the problems associated with the release of chlorine gas, halogen-free cables are used. Typically a halogen free cable is made of polypropylene, which does not produce a dangerous gas or acid in fire conditions.
Cables intended to fulfil this type of function are often labelled as one of the following:
·LSZH - Low Smoke Zero Halogen
·LSOH - Low Smoke Zero Halogen
·LSF - Low Smoke and Fume
·OHLS - Zero Halogen Low Smoke
Both LSZH and LSF are used to limit smoke, fumes and halogen given off in fire conditions.
In the event of a fire, both types will emit very low levels of smoke. LSF cable will emit toxic gases while LSZH will limit the emission of these (typically under 0.5% hydrogen chloride emission). In addition to being toxic, hydrogen chloride is corrosive to equipment. The use of LSZH cables protect both people and limit the amount of equipment damage during a fire situation.
LSF is often a modified PCV with hydrogen chloride additives and while performing better than PVC will give off more smoke and fumes than LSZH. Hydrogen chloride emissions of LSF cable may reach up to 18%.
Compared with normal PVC cables and LSF, zero halogen cables have better fire retardant properties, low toxic and corrosive gas emissions and low smoke emission.
Halogen & Smoke Emission, Corrosively & Toxicity Standards
·IEC 60754-1/BS6425-1 - emission of halogen
·IEC 60754-2 - corrosivity
·IEC 61034-1/ASTM E662 - emission of smoke
·ISO4589-2/BS2863 - oxygen index LOI
·ISO4589-3/BS2782.1 - temperature index TI
·ES713 - toxicity index
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Welcome to our factory !
Jiangsu Changcheng Cable Co.,Ltd
Lingtang Town,Yangzhou,Jiangsu ,China
1990,more than 25 years’ experience in cable manufacturing
Export office location
Yunhe Building,Hanjiang Area,Yangzhou,China
Our main products
Cable and electrical wires for installation
High temperature cable
Flame retardant and Fire-resistant cable