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FIRE-RETARDANT COMMUNICATION CABLES FOR COAL MINES
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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
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型號、名稱及使用范圍
Model、Descrtptions and Use scope
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型號
Model
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名 稱
Descrtptions
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使 用 范 圍
Use scope
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MHYV
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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
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用于平巷、斜巷及機電硐室
Served in levelslanted channels and power house
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MHJYV
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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
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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
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MHYBV
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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
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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
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MHYAV
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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
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用于較潮濕的斜井和平巷
Served in level and slanted channels with high humidity
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MHYA32
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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
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用于豎井或斜井
Served in shaft and slanted shaft
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使用特性 Service characteristics
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電纜長期允許工作溫度 Long-term service temperature of the cable conductor
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-40℃-+50℃
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電纜敷設溫度 Cable laying temperature
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≥-10℃
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+25℃時環境相對濕度
Environment relative humidity at 25℃
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≤95%
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電纜的最小彎曲半徑 Minimun bending radius
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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
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電纜規格 Specifications
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型 號
Model
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規 格
Specifications
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導體結構(根/直徑)mm
Conductor structure(number/diameter)
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MHYV
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1x2、2x2、1x4、5x2
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7/0.28
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MHJYV
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1x2、2x2
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4/0.28銅線+3/0.28鋼線 4/0.28
copper wire +3/0.28 steel wire
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MHYBV
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5x2、10x2、20x2
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1/0.8
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MHYAV
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20x2、30x2、50x2
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MHYA32
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30x2、50x2、80x2
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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
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型 號
Model
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20℃時導體直流電阻
DC resistance of conductor at 20℃
≤Ω ( ， /km)
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固有衰減(800Hz)
Intrinsic attenuation
≤( dB/km)
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MHYV
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45
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1.10
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MHJYV
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73
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1.30
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MHYBV MHYAV MHYA32
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36.7
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0.95
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2、電纜其它主要技術性能 Other major technical performances
( MHYV、MHJYV、MHYBV MHYAV、MHYA32)
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序 號
Serial number
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項目
Items
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技術性能
Technical performances
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1
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+20℃線芯直流電阻(≤Ω/Km)
Line core DC resistance at 20℃
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見上表 See above table
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2
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電纜固有衰減(≤dB/Km)
Cable intrinsic attenuation
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見上表 See above table
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3
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+20℃絕緣電阻(≥MΩ Km) Insulating resistance at 20℃
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3000
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4
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lmin工頻交流電壓試驗
lmin power frequency alternating current pressure test
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1500V不擊穿(50Hz)
1500V Does not penetrate
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5
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遠端串音衰減(≥dB/500)
Far-end crosstalk attenuation
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70(800Hz)
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6
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電感(≤μH/Km)
Inductance
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800(800Hz)
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7
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電纜工作電容(≤μF/Km)
Cable service capacity
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0.06(800Hz)
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8
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工作對直流電阻差(≤%環阻)
DC resistance difference
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2
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9
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單根垂直燃燒試驗
Combustion for single cable test
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MT386
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10
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成束燃燒試驗
Combustion for bunched cable test
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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
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電纜結構示意圖
IIIustration of cable structure
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