Oil/Gas Industrial Cable
PAS BS 5308 Part 1 Type 2 MICA/XLPE/IS/OS/LSZH/SWA/LSZH (Fire Resistant) Cable
APPLICATION
Publicly Available Standard (PAS) BS 5308 cables are designed
to carry communication and control signals in a variety of
installation types including those found in the petrochemical
industry. The signals can be analogue, data or voice type and
from a variety of transducers such as pressure, proximity or
microphone.Part 1 Type 2 cables are designed where a greater
degree of mechanical protection is required or where there is
direct burial at a suitable depth. Suitable for fire resistant
installations. Individually screened for enhanced signal security.
CHARACTERISTICS
Rated Voltage :Uo/U: 300/500V
Rated Temperature:
Fixed: -40ºC to +80ºC
Flexed: 0ºC to +50ºC
Minimum Bending Radius: 12D
CONSTRUCTION
Conductor
0.5mm² - 0.75mm²: Class 5 flexible copper conductor
1mm² and above: Class 2 stranded copper conductor
Insulation: MICA Tape + XLPE (Cross-Linked Polyethylene)
Individual and Overall Screen: Al/PET (Aluminium/Polyester Tape)
Drain Wire: Tinned copper
Inner Jacket:LSZH (Low Smoke Zero Halogen)
Armour:SWA (Galvanised Steel Wire Armour)
Sheath:LSZH (Low Smoke Zero Halogen)
Sheath Colour: Red Blue Black
Introduction to BS 5308 Part 1 Type 2 MICA/XLPE/IS/OS/LSZH/SWA/LSZH (Fire Resistant) Cable
I. Overview
BS 5308 Part 1 Type 2 MICA/XLPE/IS/OS/LSZH/SWA/LSZH (Fire Resistant) Cable is a high - performance cable specifically designed for places with strict requirements for fire - resistance performance, electrical performance, and environmental adaptability. This cable combines multiple advanced materials and special structures, and can maintain circuit integrity in emergency situations such as fires, and is widely used in critical power and signal transmission systems in construction, industry, transportation, and other fields.
II. Structural Composition
(I) Mica (MICA) Tape
Key Fire - resistant Layer
The mica tape is a crucial component for the fire - resistance performance of the cable. Mica has excellent high - temperature resistance and can maintain stable physical and chemical properties in a high - temperature environment. In the event of a fire, the mica tape can prevent the spread of the flame and protect the conductors inside the cable from being quickly burned out, buying precious time for personnel evacuation and firefighting work.
Supplement for Electrical Insulation
Besides its fire - resistant function, the mica tape also has a certain electrical insulation performance. It can serve as a supplement to the cable insulation system. Based on the XLPE insulation layer, it further improves the insulation reliability of the cable, especially in harsh electrical environments such as high - temperature and high - humidity, effectively preventing electrical breakdown.
(II) Cross - linked Polyethylene (XLPE) Insulation Layer
Core of Electrical Insulation
XLPE is a high - performance insulating material. It has a high insulation resistance and a low dielectric constant, which can effectively reduce the loss during power transmission. Under normal working conditions, the XLPE insulation layer can ensure the stable transmission of current within the cable, prevent current leakage, and guarantee the normal operation of electrical equipment. Advantages in Physical Properties
Cross - linked polyethylene has good mechanical properties, such as high tensile strength and tear - resistance. This enables the cable to withstand certain external forces, such as bending and stretching, during installation and use without easily damaging the insulation layer, thus ensuring the overall performance and service life of the cable.
(III) Inner Separation Layer (IS)
Structural Separation and Protection
The inner separation layer functions to separate different structural layers. It can prevent the interaction between different materials and avoid possible chemical reactions or physical wear. For example, it prevents direct contact between the XLPE insulation layer and other layer materials, thereby protecting the integrity of the XLPE insulation layer and ensuring the long - term stability of its electrical insulation performance.
Enhancement of Overall Stability
The inner separation layer helps to enhance the overall structural stability of the cable. When the cable is subjected to external impact or vibration, it can act as a buffer, reducing the risk of deformation and damage to the internal structure, and ensuring that the electrical and mechanical properties inside the cable are not affected.
(IV) Outer Separation Layer (OS)
Additional Protection Guarantee
The outer separation layer provides additional protection for the cable. Similar to the inner separation layer, it can prevent harmful substances in the external environment from contacting the internal structure of the cable, such as moisture and chemical substances. At the same time, it also helps to disperse stress when the cable is bent or subjected to local pressure, protecting the internal insulation layer and conductors.
Improvement of Environmental Adaptability
The existence of the outer separation layer enhances the cable's adaptability to different environments. Whether in a humid underground environment or in an industrially polluted environment, the outer separation layer can act as a barrier, reducing the erosion of external factors on the cable interior and prolonging the service life of the cable.
(V) Low - Smoke Zero - Halogen (LSZH) Sheath Layer
Fire - resistant and Environmental - friendly Characteristics
The LSZH sheath layer is an important manifestation of the cable in terms of fire - resistance and environmental protection. In the event of a fire, it will not release a large amount of toxic smoke like traditional halogen - containing materials, reducing the harm to personnel and facilitating personnel evacuation and rescue work. At the same time, low - smoke zero - halogen materials meet modern environmental protection requirements and cause less pollution to the environment.
Mechanical Protection Function
As the outermost sheath of the cable, the LSZH layer has a certain mechanical protection function. It can resist external mechanical damage, such as scratching and collision. Although its mechanical performance may not be as good as some traditional high - hardness sheath materials, it can effectively protect the integrity of the cable's internal structure under normal use and installation environments.
(VI) Steel Wire Armour (SWA)
Enhancement of Mechanical Strength
The steel wire armour provides strong mechanical strength for the cable. It can withstand large external pressures, such as preventing being squeezed by heavy objects during underground laying and avoiding being damaged by equipment collisions in an industrial environment. This sturdy armour structure ensures that the cable can work normally in a harsh mechanical environment and protects the internal insulation layer and conductors from damage.
Electromagnetic Shielding Effectiveness
The steel wire armour also has an electromagnetic shielding function. In some environments with electromagnetic interference, such as areas close to large motors, transformers, or communication equipment, the SWA can effectively reduce the interference of the external electromagnetic field on the signal transmission inside the cable, and also prevent the internal signals of the cable from radiating outward to interfere with other devices, improving the quality and stability of signal transmission.
I. Overview
BS 5308 Part 1 Type 2 MICA/XLPE/IS/OS/LSZH/SWA/LSZH (Fire Resistant) Cable is a high - performance cable specifically designed for places with strict requirements for fire - resistance performance, electrical performance, and environmental adaptability. This cable combines multiple advanced materials and special structures, and can maintain circuit integrity in emergency situations such as fires, and is widely used in critical power and signal transmission systems in construction, industry, transportation, and other fields.
II. Structural Composition
(I) Mica (MICA) Tape
Key Fire - resistant Layer
The mica tape is a crucial component for the fire - resistance performance of the cable. Mica has excellent high - temperature resistance and can maintain stable physical and chemical properties in a high - temperature environment. In the event of a fire, the mica tape can prevent the spread of the flame and protect the conductors inside the cable from being quickly burned out, buying precious time for personnel evacuation and firefighting work.
Supplement for Electrical Insulation
Besides its fire - resistant function, the mica tape also has a certain electrical insulation performance. It can serve as a supplement to the cable insulation system. Based on the XLPE insulation layer, it further improves the insulation reliability of the cable, especially in harsh electrical environments such as high - temperature and high - humidity, effectively preventing electrical breakdown.
(II) Cross - linked Polyethylene (XLPE) Insulation Layer
Core of Electrical Insulation
XLPE is a high - performance insulating material. It has a high insulation resistance and a low dielectric constant, which can effectively reduce the loss during power transmission. Under normal working conditions, the XLPE insulation layer can ensure the stable transmission of current within the cable, prevent current leakage, and guarantee the normal operation of electrical equipment. Advantages in Physical Properties
Cross - linked polyethylene has good mechanical properties, such as high tensile strength and tear - resistance. This enables the cable to withstand certain external forces, such as bending and stretching, during installation and use without easily damaging the insulation layer, thus ensuring the overall performance and service life of the cable.
(III) Inner Separation Layer (IS)
Structural Separation and Protection
The inner separation layer functions to separate different structural layers. It can prevent the interaction between different materials and avoid possible chemical reactions or physical wear. For example, it prevents direct contact between the XLPE insulation layer and other layer materials, thereby protecting the integrity of the XLPE insulation layer and ensuring the long - term stability of its electrical insulation performance.
Enhancement of Overall Stability
The inner separation layer helps to enhance the overall structural stability of the cable. When the cable is subjected to external impact or vibration, it can act as a buffer, reducing the risk of deformation and damage to the internal structure, and ensuring that the electrical and mechanical properties inside the cable are not affected.
(IV) Outer Separation Layer (OS)
Additional Protection Guarantee
The outer separation layer provides additional protection for the cable. Similar to the inner separation layer, it can prevent harmful substances in the external environment from contacting the internal structure of the cable, such as moisture and chemical substances. At the same time, it also helps to disperse stress when the cable is bent or subjected to local pressure, protecting the internal insulation layer and conductors.
Improvement of Environmental Adaptability
The existence of the outer separation layer enhances the cable's adaptability to different environments. Whether in a humid underground environment or in an industrially polluted environment, the outer separation layer can act as a barrier, reducing the erosion of external factors on the cable interior and prolonging the service life of the cable.
(V) Low - Smoke Zero - Halogen (LSZH) Sheath Layer
Fire - resistant and Environmental - friendly Characteristics
The LSZH sheath layer is an important manifestation of the cable in terms of fire - resistance and environmental protection. In the event of a fire, it will not release a large amount of toxic smoke like traditional halogen - containing materials, reducing the harm to personnel and facilitating personnel evacuation and rescue work. At the same time, low - smoke zero - halogen materials meet modern environmental protection requirements and cause less pollution to the environment.
Mechanical Protection Function
As the outermost sheath of the cable, the LSZH layer has a certain mechanical protection function. It can resist external mechanical damage, such as scratching and collision. Although its mechanical performance may not be as good as some traditional high - hardness sheath materials, it can effectively protect the integrity of the cable's internal structure under normal use and installation environments.
(VI) Steel Wire Armour (SWA)
Enhancement of Mechanical Strength
The steel wire armour provides strong mechanical strength for the cable. It can withstand large external pressures, such as preventing being squeezed by heavy objects during underground laying and avoiding being damaged by equipment collisions in an industrial environment. This sturdy armour structure ensures that the cable can work normally in a harsh mechanical environment and protects the internal insulation layer and conductors from damage.
Electromagnetic Shielding Effectiveness
The steel wire armour also has an electromagnetic shielding function. In some environments with electromagnetic interference, such as areas close to large motors, transformers, or communication equipment, the SWA can effectively reduce the interference of the external electromagnetic field on the signal transmission inside the cable, and also prevent the internal signals of the cable from radiating outward to interfere with other devices, improving the quality and stability of signal transmission.