A kablun YJV yana daya daga cikin mafi yawan amfani da suka shahara a tashar kabilu. Ba a nan, idan abin da aka yi waɗanda suna nufin "kabilu" a gaba, suke nufin kabiluwar YJV. A matsayin kabilun yawan da ake amfani a tashar kabilu, YJV na iya zama mai karfi a tashar kabilu ko kuma ƙarami a tashar ɗan. Kabiluwar YJV ana iya samun a cikin jirgin babban birnin (tare da manhole covers) ko kuma a tsaye a kan ƙarami. Akwai wasu abubuwa da ake yi a lokacin wannan inganta, inda ake faɗa kabiluwar kabilu a lokacin ingantattun, wanda ke magance fasahar kabilu masu yawa, kuma haka suna nufin kabiluwar YJV. A nan ne bayanin labari game da kabiluwar YJV:
Kabiluwar Copper-core (Aluminum-core) Cross-linked Polyethylene Insulated Polyvinyl Chloride Sheathed Power Cable
Daga faduwar zuwa farkon, kabiluwar YJV ta shiga da conductor, polyethylene insulator, filler (nylon, PVC composite material, etc.), da polyvinyl chloride outer sheath.
- Conductor yana domin copper-core. A halin yanzu, copper conductor yana da muhimmanci a cikin cin gwamnati a kan market. Aluminum conductors ba ake amfani da su sosai saboda abin da ba su daidai da ma'adanin tsarki ko kuma standard.
- Filler yana domin nylon, wanda yake da muhimmanci a kan taimakawa kabilu, mafi yoyi a nufin da ka sa "riga" a kan kabilu.
- Don kabiluwar power cable da steel tape armor, an fi sanya ɗaya da steel tape armor bayan filler da sheath don taimakawa kyau a lokacin da ake tsaye a kan ƙarami. Modelin kabiluwar YJV da steel tape armor shine YJV22.
- Polyvinyl chloride sheath yana da PVC material da ake sanin.
GB/T12706.1-2008, IEC60502-1-1997 standards
Copper material and aluminum alloy material. The model code for aluminum-core cable is YJLV.
Kabiluwar YJV ana iya zama daga baya da extra-high voltage, high voltage, medium voltage, da low voltage cables. Mafi yawan da ake amfani a ranar yanzu shine low-voltage power cables. High voltage and extra-high voltage cables ana iya amfani don tashar kabilu a lokacin daɗi da daɗi, amma medium and low-voltage power cables (35kV and below) na iya da muhimmanci a cikin amfani masu yawa.
The maximum long-term allowable operating temperature of the cable conductor is 70°C. During a short circuit (with a maximum duration not exceeding 5 seconds), the maximum temperature of the cable conductor should not exceed 160°C. The ambient temperature during cable laying should not be lower than 0°C.
Power cables for distribution engineering, wire and cable for power transmission engineering, cables for mechanical and electrical installation projects, power transmission cables, cables for power supply installation systems and control systems, etc.
- The minimum bending radius during cable laying should not be less than 10 times the cable outer diameter.
- YJV/YJLV cables can be laid indoors, in trenches, and in pipes, and can also be buried in loose soil, but they cannot withstand external forces.
- YJV22/YJLV22 cables are laid underground and can withstand mechanical external forces but cannot bear large tensile forces.
- Special tools such as pay-off stands and guide rollers should be used for cable laying. Mechanical damage should be prevented during the laying process, and the cable should be kept away from heat sources.
- When laying cables through pipes, the inner diameter of the pipe should be at least 1.5 times the outer diameter of the cable. When multiple cables are laid through the same pipe, cable extrusion should be avoided, and the total area of the cables should not exceed 40% of the total inner area of the pipe.
Ordinary type, flame-retardant type, fire-resistant type, low smoke zero halogen type
Kabiluwar YJV zai iya shiga da single conductor ko multiple conductors. Core numbers of YJV cables include 1-core, 2-core, 3-core, 4-core, 5-core, 3+1-core, 3+2-core, 4+1-core, etc. Among them, 3+1-core, 3+2-core, and 4+1-core are composed of two types of conductors with different functions: one is called phase wire, and the other is called ground wire, which is specially used for grounding.
Common specifications are 1mm², 1.5mm², 2.5mm², 4mm², 6mm², 10mm², 16mm², 25mm², 35mm², 50mm², 70mm², 95mm², 120mm², 150mm², 185mm², 240mm², 300mm², etc. For example, YJV3185+295 cable is composed of 3 phase wires of 185mm² and 2 ground wires of 95mm².
