Elevator 4 core single mode indoor optical fiber elevator traveling optical cable

Product name: Elevator 4-core single-mode indoor optical fiber elevator accompanying optical cable
Application scenario: Designed for elevator internal communication system, suitable for signal transmission between elevator car and machine room, such as video monitoring, voice communication, elevator control system signal transmission, etc., which can ensure stable signal transmission during elevator operation.
Fiber characteristics
Fiber type: Using single-mode optical fiber of ITU-T G.652 standard, it has the characteristics of low attenuation and high bandwidth, which can effectively reduce the loss of optical signals during transmission and ensure long-distance and high-speed data transmission.
Number of optical fiber cores: 4 cores, which can meet various signal transmission requirements, such as simultaneous transmission of video, audio, control signals, etc., and provide sufficient channels for comprehensive communication inside the elevator.
Fiber attenuation: At a wavelength of 1310nm, the attenuation coefficient is not more than 0.35dB/km; at a wavelength of 1550nm, the attenuation coefficient is not more than 0.22dB/km, ensuring the strength and quality of optical signals during long-distance transmission.
Fiber bandwidth: At 1310nm and 1550nm wavelengths, the zero dispersion wavelength range is 1300nm to 1324nm, and the dispersion coefficient is no more than 3.5ps/(nm・km), which can support high-speed data transmission, such as 10Gbps, 40Gbps or even higher transmission rates, to meet the needs of future elevator intelligent upgrades.
Cable structure
Reinforcement: Built-in high-strength aramid yarn as a reinforcement, with extremely high tensile strength and tensile resistance, can withstand the tension, bending and torsion stresses during elevator operation, ensuring the safety and reliability of the optical cable during the elevator accompanying process.
Sheath material: Low-smoke halogen-free flame-retardant polyolefin (LSZH) sheath material is used, which has good flexibility, wear resistance, oil resistance and corrosion resistance. At the same time, it does not produce a large amount of toxic smoke when burning, meets environmental protection and safety requirements, can effectively protect the optical fiber and internal structure, and extend the service life of the optical cable.
Shielding structure: To prevent electromagnetic interference in the elevator shaft from affecting the optical signal, the optical cable adopts a metal composite tape shielding structure with good shielding effect, which can ensure the pure transmission of the optical signal and reduce signal distortion and bit error rate.
Dimensions and weight: The optical cable is circular in shape, with a diameter of about [X] mm and a weight of about [X] g per meter, which is convenient for installation and laying in the elevator shaft, reducing space occupation and the impact on the operation of the elevator.
Electrical performance
Insulation resistance: Under DC 500V conditions, the insulation resistance between the optical fiber and the metal reinforcement and the metal shielding layer is not less than 10000MΩ・km, ensuring good electrical insulation performance and preventing safety accidents such as leakage and short circuit.
Withstand voltage strength: It can withstand AC 3000V/5min withstand voltage test without breakdown or flashover, ensuring safety and reliability under normal operating voltage and certain overvoltage conditions.
Environmental characteristics
Working temperature: It can work normally in the temperature range of -20℃ to +60℃, adapt to different seasons and environmental conditions in the elevator shaft, and ensure the stable transmission of optical signals and the normal use of optical cables in low and high temperature environments.
Storage temperature: In the storage temperature range of -40℃ to +70℃, the performance of the optical cable will not be significantly affected, which is convenient for long-term storage and standby.
Relative humidity: In an environment with a relative humidity of 5% to 95%, the optical cable should be able to work normally, and will not experience performance degradation or damage due to a humid or dry environment.
Radiation resistance: It has a certain radiation resistance, such as being able to withstand a radiation dose of 100Mrad {100×10⁶cJ/Kg}, which can resist the influence of electromagnetic radiation sources that may exist in the elevator shaft to a certain extent.
Mechanical properties
Tensile strength: The minimum short-term tensile strength of the optical cable is not less than [X] N, and the minimum long-term tensile strength is not less than [X] N. It can withstand the tensile force during the operation of the elevator, ensuring that the optical cable will not break or be damaged during the frequent up and down operation of the elevator.
Bending radius: During installation and use, the minimum bending radius of the optical cable should not be less than 10 times the outer diameter of the optical cable. In dynamic conditions, such as during elevator operation, the minimum bending radius should not be less than 20 times the outer diameter of the optical cable to prevent the optical fiber from being lost and broken due to excessive bending.
Torsion performance: After [X] torsion tests, the optical fiber attenuation change of the optical cable does not exceed 0.05dB, the sheath has no cracks, and the optical fiber has no breaks, etc., ensuring the torsion adaptability of the optical cable during elevator operation.
Safety and certification
Flame retardant performance: It meets the requirements of the single vertical combustion test in GB/T 18380.3 standard. The flame spreads slowly during combustion, and less smoke and harmful gases are generated. It has good fireproof performance and ensures the safety of elevators in emergency situations such as fire.
Environmental protection requirements: The product complies with environmental protection standards such as the RoHS directive, does not contain harmful substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and their ethers, and is harmless to the environment and human health.
Product certification: CCC and other related certifications prove that the product complies with national standards and industry specifications, has reliable quality, and can be safely used in elevators and other related fields.
Service life
Under normal use and maintenance conditions, the expected service life is not less than [20] years, providing reliable communication guarantee for the long-term stable operation of elevators.