YJ----cross-linked polyethylene insulation
V----polyvinyl chloride sheath
The name of the YJV cable model is: XLPE insulated PVC sheathed power cable
XLPE insulated power cable has excellent thermo-mechanical performance, excellent electrical performance and chemical corrosion resistance, and has the advantages of simple structure, light weight, and no restrictions on the laying. It is widely used in urban power grids and mines. And the novel cable of the factory.
The insulation-crosslinked polyethylene of the cable is a cross-linked polyethylene that chemically and physically converts the linear molecular structure of polyethylene into a three-dimensional network structure, thereby greatly improving the thermomechanical properties of the polyethylene, thereby maintaining Excellent electrical performance.
The maximum rated working temperature of the XLPE insulated power cable conductor is 90 °C, which is higher than that of PVC insulation and polyethylene insulated cable, so the current carrying capacity of the cable is further improved.
❈ product description
◆ YJY YJLV
YJLY copper or aluminum core XLPE insulated PVC sheathed power cable
Copper or aluminum core XLPE insulated PE sheathed power cable is laid indoors, in tunnels, cable trenches and pipelines. It can also be buried in loose soil. The cable can withstand certain laying traction, but can not withstand mechanical external forces. Function occasion
◆ YJV23 YJLV22
YJLV23 copper or aluminum core XLPE insulated steel tape armored PVC sheathed power cable
Copper or aluminum core XLPE insulated steel tape armored PE sheathed power cable Suitable for indoor, tunnel, cable trench and underground direct burial. Cable can withstand mechanical external force, but can not withstand large tensile force
◆ YJV33 YJLV32
YJLV33 copper or aluminum core XLPE insulated fine steel wire armored PVC sheathed power cable
Copper or aluminum core XLPE insulated fine steel wire armored PE sheathed power cable Suitable for high drop areas, able to withstand mechanical external forces and considerable tensile force
◆ YJV43 YJLV42
YJLV43 copper or aluminum core XLPE insulated thick steel wire armored PVC sheathed power cable
Copper or aluminum core XLPE insulated thick steel wire armored PE sheathed power cable Suitable for high drop areas, able to withstand mechanical external forces and considerable tensile force
Installation and use
Method of choosing
The rated voltage of the cable is expressed by U0/U(Um): U0 is the rated power frequency voltage between the conductor to the ground or the metal shield for the cable design, and U is the rated power frequency voltage between the conductors used for the cable design. Um is The maximum value of the highest system voltage that the device can withstand.
Depending on the cable installation environment and load, the specifications and specifications of the cable are being designed. Non-armored
For overhead, indoor, tunnel, cable trench, etc., it can not bear the external force of J mechanical, and the armored type can be directly buried in the ground except for the applicable conditions of non-armoring. Can withstand certain mechanical external forces. Single-core cables are not allowed to be laid in pipes that produce magnetism. Special types of cables should be selected for flammable and explosive, chemically corrosive and high temperature, low temperature and other occasions.
When the cable is stored, it should be packaged to avoid long-term outdoor sun exposure. The ends of the cable are reliably sealed. It is not allowed to be stored in a humid environment for a long time, and the cable tray cannot be laid flat. When transporting, the height should be considered and fixed effectively. When lifting, several plates are not allowed to be hoisted at the same time. It is strictly forbidden to push down from a high place.
Cable laying should use special tools, such as pay-off racks, guide rollers, etc., to prevent mechanical damage during the laying process, away from heat sources. When the cable is laid, the inner diameter of the pipe is not less than 1.5 times of the outer diameter of the cable. When multiple cables are used, the cable is not allowed to be squeezed. The total area of the cable does not exceed 40% of the total area of the pipe.
❈ Product Standards
This product is produced according to GB12706 "Rated voltage 35KV copper core, aluminum core plastic insulated power cable" standard, and can also be produced according to the needs of users according to the International Electrotechnical Commission recommended standards IEC, British standards, German standards and US standards.
Scope of application
This product is suitable for fixed laying of power frequency rated voltage of 0.6/1KV and below in distribution network or industrial equipment. Often used for overhead operations.
The power frequency rated UO/U is 0.6/1KV.
The cable conductor allows a long-term maximum operating temperature of 90 °C.
In the case of a short circuit (maximum duration not exceeding 5 s), the maximum temperature of the cable conductor does not exceed 250 °C.
The ambient temperature of the cable should not be lower than 0 °C.
Cable bending radius: not less than 15 times the outer diameter of the cable.
Single core, 2 core, 3 core, 4 core, 5 core, 3+1, 3+2, 4+1, pre-branch cable, etc.
Cable classification
Classification based on voltage is not strictly divided, but is divided according to what is generally accepted in the industry. According to the voltage used, yjv cable can be divided into
1KV and below are low voltage cables;
1KV~10KV is a medium voltage cable;
10KV~35KV is a high voltage cable;
35~220KV is UHV cable.
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