What is the standard for fire resistant cable?

The IEC standard for cables is a standard for the flame resistance of single cables. To assess the flame retardancy of cables, the IEC has developed IEC-1, IEC-2, and IEC-3. IEC-1 and IEC-2 are used to assess the flame retardancy of single cables when they are placed inclined and vertically, respectively, and IEC-3 is used to assess the flame retardancy of bundled cables when they are burned vertically. IEC-3 is used to assess the flame retardancy of bundled cables when burned vertically, which is a higher requirement than when bundled cables are burned vertically. However, the IEC cables produced by ZMS are safe and can pass the flame retardancy assessment of various standards.

If you are looking for more details, kindly visit our website.

Low-smoke Zero Halogen cable is characterized not only by excellent fire retardant properties but also by the fact that the materials constituting the low-smoke halogen-free cable do not contain halogens. It is less corrosive and toxic when burned and produces a very small amount of smoke. This reduces the damage to the human body, instruments, and equipment, and facilitates timely rescue in case of fire.
Although the halogen-free low-smoke flame retardant cable has excellent flame retardancy, corrosion resistance, and low smoke concentration, its mechanical and electrical properties are slightly worse than those of ordinary cables.

Requirement of Application: 
The permissible long-time working temperature of regular non-halogen low-smokie flame-retardant polyolefin insulation is not more than 70C, and that of irradiation cross-linked non-halogen low-smoke flame-retardant olefin insulation is not more than 105&#;. The temperature of the laying cable is not lower than 0&#;.

It is easy to confuse the concept of flame retardant cable and fire resistant cable. Although flame retardant cables have many advantages that are more suitable for chemical companies, such as low halogen, low smoke, and flame retardant. However, in general, fire-resistant cables can replace fire-resistant cables, while fire-resistant cables cannot replace fire-resistant cables. Their differences mainly lie in.

1. The Difference In Principle

The principles of fire-resistant cable and flame-retardant cable are different.
Halogen-containing cable flame retardant principle relies on the flame retardant effect of halogen, halogen-free cable flame retardant principle relies on the precipitation of water to lower the temperature to extinguish the fire roast.
Fire-resistant cable is to rely on the fire-resistant layer of mica materials, and fire-resistant properties to ensure that the cable works properly in the fire.

2. The Difference Between The Structure And Materials

Fire-resistant cable structures and materials and flame-retardant cables are not the same.
The basic structure of flame retardant cable is.
(1) The insulation layer is made of flame-retardant materials.
(2) The sheath and outer sheath are made of flame-retardant materials.
(3) The tape and filling using flame retardant materials.

Fire-resistant cable is usually between the conductor and insulation layer and then add a fire-resistant layer. So theoretically you can add a fire-resistant layer to the structure of the fire-retardant cable, it forms both fire-retardant and fire-resistant cable, but in practice, there is no need for this. Because the refractory layer of fire-resistant cable, usually uses a multi-layer mica tape wrapped directly around the wire. It can resist burning for a long time, and even if the polymer at the applied flame is burned, it can ensure the normal operation of the line.

To evaluate the fire resistance of cables, IEC-1, IEC-2, and IEC-3 have been developed by the International Electrotechnical Commission.
IEC-1 and IEC-2 are used to evaluate the flame retardancy of a single cable when it is placed at an angle and vertically, respectively.
IEC -3 is used to evaluate the flame resistance of bundled cables when they burn vertically.
In contrast, the flame retardancy requirements for vertical burning of bundled cables are much higher.

Related links:
5 Must-Have Features in a Medium Voltage Power Cable

Qinfong contains other products and information you need, so please check it out.

IEC-1/BS-1 Flame Retardant Grade (Flame Test On Single Vertical Insulated Wires/Cables)

This is the flame resistance standard for a single cable. The test stipulates that a 60cm long specimen is fixed vertically in the metal box opened by the front wall, the flame length of 175mm propane burner from the upper fixed end of the specimen 450mm position on the flame cone. And the cable at an angle of 45 degrees, if the specimen burns damaged part of the lower part of the fixed end does not exceed 50mm, the test passes.

IEC-3/BS-3 flame retardant grade (vertical burning test for bundled wires or cables)

This is the flame retardant standard for bundled cables. The test stipulates that a 3.5m long cable specimen is fixed on a ladder test frame with wire, and the number of specimens is determined by the non-metallic materials required for different classifications.
The specimens are hung vertically on the back wall of the combustion furnace, and the air is introduced into the furnace through the air inlet on the bottom plate.
Propane plane burner with 750 &#; flame contact with the specimen, the specimen in the case of forced blowing air (airflow emission 5 m3 / min, wind speed 0.9 m / s), must be in the vertical burning for 20 minutes without burning up.
The cable extinguishes itself within 2.5m of flame spread. IEC is divided into classes A, B, C, and D to evaluate the superiority of flame retardant performance.

Over Productions Service: ZMS 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: ZMS 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: ZMS 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 ZMS 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 ZMS: ZMS 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.

If you are looking for more details, kindly visit Fireproof Cable.

BS British Standard Institution BS -1 Emergency lighting. Code of practice for the emergency lighting of premises BS -1 Fire detection and fire alarm systems for buildings. Code of practice for system design, installation, commissioning and maintenance BS -6 Fire detection and fire alarm systems for buildings. Code of practice for the design, installation and maintenance of fire detection and fire alarm systems in dwellings BS -8 Fire detection and fire alarm systems for buildings. Code of practice for the design, installation, commissioning and maintenance of voice alarm systems BS -9 Fire detection and alarm systems for buildings. Code of practice for the design, installation, commissioning and maintenance of emergency voice communication systems BS Specification for performance requirements for cables required to maintain circuit integrity under fire conditions BS Electric cables. Thermosetting insulated, non-armoured cables for voltages up to and including 450/750 V, for electric power, lighting and internal wiring, and having low emission of smoke and corrosive gases when affected by fire BS -6 Components for smoke and heat control systems. Specifications for cable systems BS -1 Electric cables. Specification for 300/500 V fire resistant screened cables having low emission of smoke and corrosive gases when affected by fire. Multicore and multipair cables BS Electric cables. Thermosetting insulated, armoured, fire-resistant cables of rated voltage 600/ V, having low emission of smoke and corrosive gases when affected by fire. Specification BS -2 Methods of test for assessment of the fire integrity of electric cables. Test for unprotected small cables for use in emergency circuits.
BS EN with a 930° flame and with water spray BS Method for assessment of fire integrity of large diameter power cables for use as components for smoke and heat control systems and certain other active fire safety systems BS Selection and installation of fire-resistant power and control cable systems for life safety and fire-fighting applications. Code of practice. BS Electric Cable - Thermosetting insulated armored cables for voltage of 600/ V and / V having low
emission of smoke and corrosive gases when affected by fire. BS Specifications for conductors in insulated cables cords. BS -1=IEC 332-1 Test on electric cables under fire conditions.
Part 1: method of test on a single vertical insulated wire or cable BS -3 = IEC 332-3 Test on electric cables under fire condition.
Part 3: Test on bunched wire or cables. BS -1, IEC -1 Method of test for gases evolved during combustion of electric cables.
Part 1:- Method for determination of amount of halogen acid gas evolved during combustion of polymeric
materials for cables. BS -2, IEC -2 Test on gases evolved during the combustion of material from cables.
Part 2:- Determination of degree of acidity (corrosivity) of gases by measuring pH and conductivity.  CEI Comitato Elettrotecnico Italiano CEI 20-11 / EN Insulating, sheathing and covering materials for low voltage energy cables CEI 20-36/2-1 Tests for electric cables under fire conditions - Circuit integrity - Part 21: Procedures and requirements - Cables of rated voltage up to and including 0,6/1,0 kV CEI 20-45 Fire resistant elastomeric insulated cables, halogen free (LSOH) with rated voltage Uo/U 0.6/1 kV  DIN Deutsches Institut fur Normung DIN Fire behaviour of building materials and building components - Part 12: Circuit integrity maintenance of electric cable systems; requirements and testing ASTM ASTM Standard ASTM D Standard test method for measuring the minimum oxygen concentration to support candle like combustion of
plastic. ASTM D792 Standard test methods for density and specific gravity (relative gravity) of plastic by displacement ASTM D662 Standard test method for specific optical density of smoke generated by solid materials. ASTM D638 Standard test method for tensile properties of plastics.  EN  European Norm EN Methods of test for resistance to fire of unprotected small cables for use in emergency circuit EN Test for vertical flame spread of vertically-mounted bunched wires and cables EN /2-1 Method of determination of amount of halogen acid gas evolved during combustion of polymeric materials taken from cables EN /2-2 Determination of degree of acidity (corrosivity) of gases by measuring PH and conductivity EN -7 Sectional specification for instrumentation and control cables EN Method of test for resistance to fire of larger unprotected power and control cables for use in emergency circuits EN Insulating, sheathing and covering materials for low voltage energy cables EN Conductors of insulated cables EN -1 Test for vertical flame propagation for a single insulated wire or cable EN -2 Test for vertical flame propagation for a single small insulated wire or cable EN -3 Test for vertical flame spread of vertically-mounted bunched wires or cables EN Measurement of smoke density of cables burning under defined conditions  IEC International Electrotechnical Commission IEC Conductors of insulated cables - Guide to the dimensional limits of circular connectors IEC Test for electrical cables under fire conditions. Circuit integrity. IEC -1 Tests on electric and optical fibre cables under fire conditions -Test for vertical flame propagation for a single insulated wire or cable  IEC -3 Test on electric cables under fire conditions - Test for vertical flame spread of vertically-mounted bunched wires or cables IEC -1 Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) - Part 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV)IEC -1Method for determination of amount of halogen acid gas evolved during combustion of polymeric materials taken from cables IEC -2 Determination of degree of acidity (corrosivity) of gases by measuring pH and conducivity IEC -1 Optical fibres IEC -1 Optical fibre cables  NBN Norme Belge NBN 713-020 Fire resistance of building materials  NF Norme Française  SS Singapore Standard SS 299 part 1 Fire resistant cables - Performance requirements for cables required to maintain circuit integrity under fire conditions UL UL Standard  UL 94 Test for flammability of plastic materials for part in device and appliances.  VDE Verband der Elektrotechnik Elektronik Informationstechnik VDE Wiring cables for telecommunication and data processing systems part 814 - Testing of cables, wires and flexible cords Continuance of insulation effect under fire conditions
part 814 - Testing of cables, wires and flexible cords Continuance of insulation effect under fire conditions