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產(chǎn)品介紹

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

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(hù)套通信電纜 PE insulated PVC sheathed communication cables for coal mines	用于平巷、斜巷及機(jī)電硐室 Served in level,slanted channels and power house
MHJYV	煤礦用加強(qiáng)型線芯聚乙烯絕緣聚氯乙烯護(hù)套通信電纜 Reinforced core PE insulated PVC sheathed communication cables for coal mines	用于機(jī)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(hù)套通信電纜 PE insulated galvanized steel wire weave armored PVC sheathed communication cables for coal mines	用于機(jī)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(hù)層聚氯乙烯護(hù)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(jié)護(hù)層鋼絲鎧裝聚氯乙烯護(hù)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(shè)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(dǎo)體結(jié)構(gòu)(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(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

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)
MHYV	45	1.10
MHJYV	73	1.30
MHYBV MHYAV MHYA32	36.7	0.95

2、電纜其它主要技術(shù)性能 Other major technical performances

( MHYV、MHJYV、MHYBV MHYAV、MHYA32)

序號 Serial number	項(xiàng)目 Items	技術(shù)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(yàn) lmin power frequency alternating current pressure test	1500V不擊穿(50Hz) 1500V Does not penetrate
5	遠(yuǎn)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(yàn) Combustion for single cable test	MT386
10	成束燃燒試驗(yàn) Combustion for bunched cable test	符合GB/T18380標(biāo)準(zhǔn)中B類成束燃燒試驗(yàn)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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