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            煤礦用阻燃通信電纜

            煤礦用阻燃通信電纜

            FIRE-RETARDANT COMMUNICATION CABLES FOR COAL MINES

            產品用途:產品用于煤礦井下電話通信干線、配線和用戶線路。

            Scope of application:The product uses in the coal mine mine shaft telephone communication skeleton line, matches the line and the subscriber's loop

            執行標準 Standards implemented:MT 81814-1999

            型號、名稱及使用范圍

            Model、Descriptions and Use scope

            型號
            Model
            名 稱
            Descriptions
            使 用 范 圍
            Use scope
            MHYV
            煤礦用聚乙烯絕緣聚氯乙烯護套通信電纜
            PE insulated PVC sheathed communication cables for coal mines
            用于平巷、斜巷及機電硐室
            Served in level,slanted channels and power house
            MHJYV
            煤礦用加強型線芯聚乙烯絕緣聚氯乙烯護套通信電纜
            Reinforced core PE insulated PVC sheathed communication cables for coal mines
            用于機械損傷較高的平巷和斜巷
            Served in level and slanted channels where mechanical damage is frequent
            MHYBV
            煤礦用聚乙烯絕緣鍍鋅鋼絲編織鎧裝聚氯乙烯護套通信電纜
            PE insulated galvanized steel wire weave armored PVC sheathed communication cables for coal mines
            用于機械沖擊較高的平巷和斜巷
            Served in level and slanted channels where mechanical damage is frequent
            MHYAV
            煤礦用聚乙烯絕緣鋁-聚乙烯粘護層聚氯乙烯護套通信電纜
            PE insulated Al/PE binding layer PVC sheathed communication cables for coal mines
            用于較潮濕的斜井和平巷
            Served in level and slanted channels with high humidity
            MHYA32
            煤礦用聚乙烯絕緣鋁-聚乙烯粘結護層鋼絲鎧裝聚氯乙烯護套通信電纜
            PE insulated Al/PE binding layer steel wire armored PVC sheathed communication cables for coal mines
            用于豎井或斜井
            Served in shaft and slanted shaft

            使用特性 Service characteristics

            電纜長期允許工作溫度 Long-term service temperature of the cable conductor
            -40℃-+50℃
            電纜敷設溫度 Cable laying temperature
            ≥-10℃
            +25℃時環境相對濕度
            Environment relative humidity at 25℃
            ≤95%
            電纜的最小彎曲半徑 Minimun bending radius MHYV及MHJYV型電纜為電纜外徑的10倍,其它型號為外徑的15倍 10 times of the cable outer diameter of MHJYV, and 15times for the rest

            電纜規格 Specifications

            型 號
            Model
            規 格
            Specifications
            導體結構(根/直徑)mm
            Conductor structure(number/diameter)
            MHYV
            1x2、2x2、1x4、5x2
            7/0.28
            MHJYV
            1x2、2x2
            4/0.28銅線+3/0.28鋼線 4/0.28
            copper wire +3/0.28 steel wire
            MHYBV
            5x2、10x2、20x2
            1/0.8
            MHYAV
            20x2、30x2、50x2
            MHYA32
            30x2、50x2、80x2


            電纜主要技術性能 Major technical performances

            1、電纜導體直流電阻及固有衰減 DC resistance of the conductor and Intrinsic attenuation

            型 號
            Model
            20℃時導體直流電阻
            DC resistance of conductor at 20℃
            ≤Ω ( , /km)
            固有衰減(800Hz)
            Intrinsic attenuation
            ≤( ,dB/km)
            MHYV
            45
            1.10
            MHJYV
            73
            1.30
            MHYBV MHYAV MHYA32
            36.7
            0.95

            2、電纜其它主要技術性能 Other major technical performances

            ( MHYV、MHJYV、MHYBV MHYAV、MHYA32)

            序 號
            Serial number
            項目
            Items
            技術性能
            Technical performances
            1
            +20℃線芯直流電阻(≤Ω/Km)
            Line core DC resistance at 20℃
            見上表 See above table
            2
            電纜固有衰減(≤dB/Km)
            Cable intrinsic attenuation
            見上表 See above table
            3
            +20℃絕緣電阻(≥MΩ Km) Insulating resistance at 20℃ 3000
            4
            lmin工頻交流電壓試驗
            lmin power frequency alternating current pressure test
            1500V不擊穿(50Hz)
            1500V Does not penetrate
            5
            遠端串音衰減(≥dB/500)
            Far-end crosstalk attenuation
            70(800Hz)
            6
            電感(≤μH/Km)
            Inductance
            800(800Hz)
            7
            電纜工作電容(≤μF/Km)
            Cable service capacity
            0.06(800Hz)
            8
            工作對直流電阻差(≤%環阻)
            DC resistance difference
            2
            9
            單根垂直燃燒試驗
            Combustion for single cable test
            MT386
            10
            成束燃燒試驗
            Combustion for bunched cable test
            符合GB/T18380標準中B類成束燃燒試驗要求
            Conforms to GB/T18380 standard B kind becomes ties the burning test

            電纜結構示意圖
            IIIustration of cable structure




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