Ten different types of mine cables and their application scope
I. Irradiation crosslinked power cable (voltage class: 0.6/1kV; Standard: GB/T12706.1-2002)
Irradiation crosslinked cable USES high-energy rays to bombish the hydrogen atoms in its molecular chain to discharge, thus creating a gap in the molecular chain. The adjacent molecular chains are combined together to form a -C-C-crosslinked bond, forming a network of macromolecular three-dimensional structure to form crosslinked polyethylene.
Through after irradiation crosslinking polyethylene thermal properties can reach 105 degrees, irradiation etc physical crosslinking method, the intervention of crosslinking without water, the water content in its insulation is not greater than 100 PPM, insulation, high purity and irradiation crosslinking cable in electronic, mechanical properties has unique features, fine cable service life can reach 60 years, at the same time cable has light weight, simple structure, laying head without limit, etc.
YJV and YJLV irradiation crosslinked polyethylene insulated polyvinyl chloride sheathed power cable
YJY and YJLY irradiation crosslinked polyethylene insulated polyethylene sheathed power cable
YJV22, YJLV22 irradiated crosslinked polyethylene insulated steel tape armored PVC sheathed power cable
YJV23, YJLV23 irradiated crosslinked polyethylene insulated steel tape armored polyethylene sheathed power cable
YJV32, YJLV32 irradiated crosslinked polyethylene insulated fine steel wire armored PVC sheathed power cable
YJV33, YJLV33 irradiated crosslinked polyethylene insulated fine steel wire armored polyethylene sheathed power cable
VV, VLV, VY, VLY, YJV, YJLV, YJY, YJLY are suitable for indoor and outdoor laying. Can withstand certain traction, but can not withstand external mechanical forces. Single - core cables are not allowed to be laid in magnetic pipelines.
VV22, VLV22, VV23, VLV23, YJV22, YJLV22, YJV23, YJLV23 can be laid in the indoor, tunnel and cable trench, and can bear certain external mechanical forces, but cannot bear too much pulling force.
VV32, VLV32, VV33, VLV33, YJV32, YJLV32, YJV33, YJLV33 are laid in the indoor, tunnel and cable trench and can withstand certain external mechanical forces.
Basic structure: conductor - crosslinked POLYETHYLENE insulation - inner sheath - steel tape armor - POLYvinyl chloride sheath
Irradiated crosslinked polyolefin (the main material is polyethylene) wire and cable are mainly used for heat-resistant construction wire, automobile wire, aviation wire, locomotive wire and electric motor and electrical wiring.
2. Medium voltage crosslinked polyethylene insulated power cable (voltage class: 6/6KV-26/35kV; Standard: GB/T12706.2-2002)
Medium voltage crosslinked polyethylene cable adopted all dry chemical cross-linking method using polyethylene molecules by linear into spatial reticulated structure, molecular structure of thermoplastic polyethylene into thermosetting crosslinking polyethylene, make its mechanical properties, heat aging properties and environmental stress can kydl_yyeliu force to a large extent, and has excellent electrical performance. It has the characteristics of high normal operating temperature, simple structure, small outside diameter, light weight, easy to use and free from the limitation of laying drop and so on. Suitable for power distribution system with rated power frequency voltage 1-35kV.
YJV62, YJLV62 Crosslinked polyethylene insulated double non-magnetic metal tape armored PVC sheathed power cable.
YJV63, YJLV63 Crosslinked polyethylene insulated double non-magnetic metal tape armored polyethylene sheathed power cable.
Other models are similar to irradiation crosslinking (only with different voltages)
YJV, YJLV, YJY and YJLY are suitable for indoor laying. Can withstand certain traction, but can not withstand external mechanical forces. Single - core cables are not allowed to be laid in magnetic pipelines.
YJV22, YJLV22, YJV23 and YJLV23 shall be laid indoors, in tunnels and cable trenches. They can bear certain external mechanical forces and cannot bear excessive pulling force. YJV32, YJLV32, YJLV33, and YJLV33 are suitable for high drop area and can withstand certain external mechanical forces and considerable pulling force.
YJV62, YJLV62, YJV63 and YJLV63 single-core cables for AC circuits shall be armoured with non-magnetic materials.
Iii. High voltage crosslinked polyethylene insulated power cable (voltage class: 64/110kV, implementation standard: GB/T 11017-2002; 127/220 kv, 290/500 kv)
XLPE cables have excellent gas performance, less dielectric loss than paper insulation and PVC insulation, and small capacitance. XLPE cables can also reduce charging current and ground fault current in the absence of a valid star ground system. Compared with other power cables, XLPE cables have small bending radius, light weight and simple terminal treatment. Since XLPE cables contain no oil, it is unnecessary to give too much consideration to the line requirements when laying, let alone the situation that the cable cannot be laid due to oil flowing.
The excellent aging resistance and extreme heat resistance deformation determine that the crosslinked POLYETHYLENE cable can load large current under the conditions of normal operating temperature of 90 degrees, short-time failure of 130 degrees, and short circuit of 250 degrees Celsius.
YJVYJLV crosslinked polyethylene insulated polyvinyl chloride sheathed power cable
YJY, YJLY crosslinked polyethylene insulated polyethylene sheathed power cable
YJLW02, YJLLW02 Crosslinked polyethylene insulated corrugated aluminum sheathed polyvinyl chloride sheathed power cable
YJLW03, YJLLW03 Crosslinked polyethylene insulated corrugated aluminum sheathed polyethylene sheathed power cable
Cable structure: conductor - conductor shield - insulation - insulation shield - waterproof layer - metal shield - metal sheath - asphalt layer - sheath - graphite layer
Iv. Control cable (Implementation standard: GB9330-88; Voltage class: 450/750V)
1. The product adopts polyvinyl chloride or irradiated crosslinked polyethylene as the insulation layer, with excellent conductive, mechanical and chemical stability properties. It is suitable for control with rated voltage up to and including 0.6/1kV and protective circuit for monitoring circuit. The long-term allowable working temperature of the conductor of the cable is 70 ° C, and that of the irradiated crosslinked polyethylene cable is 90 ° C.
2. The cable laying temperature shall not be lower than 0 degrees;
3. It is recommended to allow laying bending radius: cables without armor layer should be no less than 6 times of the cable shape, with armor layer or shield layer.
PVC insulated (irradiated crosslinked polyethylene insulated) PVC sheathed control cable
PVC insulated (irradiated crosslinked polyethylene insulated) PVC sheathed shielded control cable
Polyvinyl chloride insulated (irradiated crosslinked polyethylene insulated) polyvinyl chloride sheathed copper tape shielded control cable
PVC insulated (irradiated crosslinked polyethylene insulated) PVC sheathed steel tape armored control cable
PVC insulated (irradiated crosslinked polyethylene insulated) PVC sheathed fine wire armoured control cable
KVVR, KYJVR PVC insulated (irradiated crosslinked POLYETHYLENE insulated) PVC sheathed control flexible cable
KVVRP, KYJVRP PVC insulated (irradiation crosslinked POLYETHYLENE insulation) PVC sheathed braided shielded control flexible cable
KVV and KYJV shall be laid indoors and fixed in cable trenches and pipes.
KVVP, KYJVP, KVVP2 and KYJVP2 shall be laid indoors, in cable trench, pipe and other occasions requiring shielding
KVV22 and KYJV22 shall be laid indoors and be able to bear large external forces in fixed occasions such as cable trench, pipeline and direct burial
KVV32 and KYJV32 are laid indoors and can withstand large mechanical tension and other fixed occasions such as cable trench, pipe and shaft
KVVR, KYJVR laying in the indoor mobile requirements of soft occasions
KVVRP, KYJVRP laying in the indoor movement requires soft, shielding and other occasions
Control cables are mainly used for signal transmission, control and measurement of electrical appliances, instruments and distribution units
5. Computer cable (voltage class: 0.45/0.75kV, enterprise standard)
This product is used for the shielded cable connecting the computer, detection instrument and control system instrument with rated AC voltage of 300/500 and below, and is used for the analog data transmission with high anti-interference performance.
1. The workload of the cable shall not exceed 70 ° C for a long time.
2. The temperature of cable laying shall not be lower than 0 ℃.
3. The bending radius of the cable shall not be less than 10 times the outer diameter of the cable.
DJYPV copper core polyethylene insulation, pair of twisted copper wire braided shielding, PVC sheathed electronic computer cable
DJYP2V copper core polyethylene insulation, pair of twisted copper tape shielding, PVC sheathed computer cable
DJYP3V copper core polyethylene insulation, pair of twisted aluminum/plastic composite tape shielding, PVC sheathed computer cable
DJYPV22 copper core polyethylene insulation, twisted copper wire braid shield, steel tape armor, PVC sheathed electronic computer cable
DJYP2V22 copper core polyethylene insulation, pair of twisted copper tape shield, steel tape armor, PVC sheathed electronic computer cable
Djypvp2-22 copper conductor polyethylene insulation, pair of twisted copper tape shielding, steel speed armored, PVC sheathed electronic computer cable
DJYPV structure: copper conductor core-Polyethylene insulating - shielding connector, polyester film wrapped - copper tape or aluminum/plastic or copper wire braided shielding - wrapped - polyvinyl chloride sheath
6. Insulated overhead cables (voltage classes: 0.6/1kV, 8.7/15kV, 26/35kV; Executive standard: Three)
1. This product is used for laying overhead power lines with rated power-frequency voltage up to and including 35KV, for transmission and distribution. The permissible operating temperature of the cable conductor is 90 degrees.
2. The laying temperature of the cable shall not be lower than -20 ℃.
3. When laying the cable, the allowable bending radius shall not be less than 12 times of the cable diameter.
The specific models are as follows: 1KV: JKLYJ, JKYJ, JKLGYJ; 10 kv: JKLYJ; 10KV and 35KV: JKLYJ, JKLGYJ
7. Aluminum strand and steel core aluminum strand (voltage class: 0.6/1kV; Standard: GB/T 1179-1999)
This product is suitable for outdoor overhead laying, used for electric energy transmission and distribution of low, medium and high voltage lines. The product is light in weight, high in strength, anti-corrosion, laying without drop limit, and can withstand various environments. Steel core aluminum strand: LGJ; Scope of application: high voltage and ultra-high voltage, heavy load, large span transmission lines. Aluminum stranded wire: LJ; Scope of application: general transmission and distribution lines with small load and small distance.
Viii. Fire-resistant cable (voltage class: 0.45/0.75, 0.6/1kV; Executive Standard: GB/T 19666-2005, GB/T12706.1-2002)
Fire-resistant cables are used in high-rise buildings, subways, power stations and some important places, etc. In addition to transmitting power under the rated working voltage of 0.6/1kV, it can also operate safely for a certain period of time in the case of combustion, and for 3 hours in the case of flame burning at a high temperature of 950-1000 degrees Celsius. This greatly improves the safety factor of fire-resistant cables, which has won a certain amount of time for fire rescue.
Scope of Use:
1. The product is suitable for power transmission and distribution lines with rated voltage of 0.6/1kV.
2. The maximum long-term operating temperature of the conductor shall be 70 ° C, and the maximum temperature of the cable shall not exceed 160 ° C in case of short circuit (the maximum duration shall not exceed 5S).
3. When laying cables, the ambient temperature should be no less than 0 ℃, and the minimum bending radius should be no less than 12 times of the outside diameter of the cable.
Nh-vv PVC insulated and sheathed fire-resistant power cable
Nh-vv22 PVC insulated and sheathed steel tape armoured fire-resistant power cables
Nh-yjv crosslinked polyethylene insulated polyvinyl chloride sheathed fire-resistant power cable
Nh-yjv22 crosslinked polyethylene insulated polyvinyl chloride sheathed steel tape armored fire-resistant power cable
Nh-kvv, NH-KVV22, NH-BV, etc
Multi-core structure: conductor - fire-resistant layer - insulation - filling - cladding - inner sheath - armor - outer sheath
9. Low-smoke halogen-free cable (Standard: GB/T 19666-2005, GB 12706.1-2002)
Suitable for high-rise buildings, subway, power plant and important public places, in the case of a fire burning in the process of reducing smoke concentration, avoid the release of toxic gas, so that can make people suffocate yue from the smoke to spread, and also to prevent the harmful gas to some precision, fine instrument and the poison of human body, so as to avoid the second cable burns thousands of harm.
Wdza-yje105, WDZA-YJLE105 crosslinked polyethylene insulated polyvinyl ethylene sheathed flame retardant Class A power cable
Wdza-yje23-105, WDZA-YJLE23-105 crosslinked polyethylene insulated steel tape armored polyethylene sheathed halogen-free flame retardant Class A power cable
X. Wiring (Voltage class: 300/500V, 450/750V; Executive Standard: GB5023-1997)
Insulated wire can be divided into single wire and multi-strand wire according to the number of strands of each wire, usually more than 6 square mm insulated wire is multi-strand wire, 6 square mm and less than the insulated wire can be a single strand, also can be multi-strand wire, we also call 6 square mm and less than a single strand wire as hard wire, multi-strand wire as soft wire. Hard wire is represented by "B" and soft wire by "R". B series classification belongs to the wiring, so begin with BV is PVC PVC, namely (plastic) L is aluminum core code R is (soft), to do soft, is increasing the number of conductor wire and common insulating materials with polyvinyl chloride (PVC) and polyethylene, polyvinyl chloride (PVC) with "V", said the polyethylene with a "Y" said.
Insulated wires can be divided into single-core wires and multi-core wires according to the number of wires at the mutually exclusive kydl_yyeliu edge fixed together. Multi-core wires can also fix multiple single-core wires in an insulating sheath. The number of multicore wires in the same sheath can be up to 24 cores. Parallel multicore wires are denoted by "B" and stranded multicore wires by "S"