煤礦用阻燃通信電纜
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產(chǎn)品介紹
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產(chǎn)品用途:產(chǎn)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(biāo)準(zhǔn) Standards implemented:MT 81814-1999 |
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型號、名稱及使用范圍
Model、Descriptions and Use scope
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型號
Model |
名 稱
Descriptions |
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 |
用于平巷、斜巷及機電硐室 Served in level,slanted 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 |
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 |
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 |
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(jié)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℃
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| 電纜敷設(shè)溫度 Cable laying temperature |
≥-10℃
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+25℃時環(huán)境相對濕度 Environment relative humidity at 25℃ |
≤95%
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| 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
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型 號
Model |
規(guī) 格
Specifications |
導(dǎo)體結(jié)構(gòu)(根/直徑)mm
Conductor structure(number/diameter) |
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MHYV
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1x2、2x2、1x4、5x2 |
7/0.28
|
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MHJYV
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1x2、2x2 |
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 |
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 |
電纜主要技術(shù)性能 Major technical performances
1、電纜導(dǎo)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 |
20℃時導(dǎo)體直流電阻
DC resistance of conductor at 20℃ ≤Ω ( ， /km) |
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
|
1.30
|
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MHYBV MHYAV MHYA32
|
36.7
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0.95
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2、電纜其它主要技術(shù)性能 Other major technical performances
( MHYV、MHJYV、MHYBV MHYAV、MHYA32)
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序 號
Serial number |
項目
Items |
技術(shù)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℃ |
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 |
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℃ | 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 |
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 |
70(800Hz) |
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6
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電感(≤μH/Km) Inductance |
800(800Hz) |
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7
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電纜工作電容(≤μF/Km) Cable service capacity |
0.06(800Hz) |
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8
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工作對直流電阻差(≤%環(huán)阻) DC resistance difference |
2 |
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9
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單根垂直燃燒試驗 Combustion for single cable test |
MT386 |
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10
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成束燃燒試驗 Combustion for bunched cable test |
符合GB/T18380標(biāo)準(zhǔn)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(jié)構(gòu)示意圖
IIIustration of cable structure
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