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(zhí)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 | 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 | | 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(huán)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(guī)格 Specifications 型 號
Model | 規(guī) 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(huán)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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