產品介紹
| 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
