在线观看韩国理论电影,国产精品久久久久久久一区二区

煤礦用電纜MHYV型號;MA煤安標志認證產(chǎn)品

產(chǎn)品用途:本產(chǎn)品適用于固定敷設(shè)在礦井作通信干線及分線箱與機連接線

scope of application:this product is fit for being laid in fixed placed in mines for the connection of communication trunk linesjunction boxephones.

執(zhí)行標準 standards implemented: q/3210hl29-2003

型號、名稱及使用范圍 model desc-riptionsuse scope

型號model	名稱desc-riptions	使用范圍scope of application
mhvvhuvv	煤礦用聚氯乙烯絕緣阻燃聚氯乙烯護套電纜pvc insulated fire retardant pvc sheathed ephone cables for use in mines	礦井中一般場合general circumstances in mines
mhvvrhuvvr	煤礦用聚氯乙烯絕緣阻燃聚氯乙烯護套軟電纜pvc insulated fire retardant pvc sheathed soft ephone cables for use in mines	礦井中分線盒、分線箱與機連接的場合where connection between junction boxephone is required in mines
mhvv22huvv22	煤礦用聚氯乙烯絕緣鋼帶鎧裝阻燃聚氯乙烯護套電纜pvc insulated steel tape armored fire retardant pvc sheathed ephone cables for use in mines	礦井中承受一定沖擊力和壓力的場合where cables are under some impactpressure in the mine
mhvv32huvv32	煤礦用聚氯乙烯絕緣細圓鋼絲鎧裝阻燃聚氯乙烯護套電纜pvc insulated fine round steel wire armored fire retardant pvc sheathed ephone cables for use in mines	礦井中垂直敷設(shè)或承受較大拉力的場合vertically laid or laid where the cables are under big impactpull force in mines
mhyvhuyv	煤礦用聚乙烯絕緣阻燃聚氯乙烯護套電纜pe insulated fire retardant pvc sheathed ephone cables for use in mines	礦井中一般場合general circumstances in mines
mhyvrhuyvr	煤礦用聚乙烯絕緣阻燃聚氯乙烯護套軟電纜pe insulated fire retardant pvc sheathed soft ephone cables for use in mines	礦井中一般場合general circumstances in mines
mhyv22huyv22	煤礦用聚乙烯絕緣鋼帶鎧裝阻燃聚氯乙烯護套電纜pe insulated steel tape armored fire retardant pvc sheathed ephone cables for use in mines	礦井中承受一定沖擊力和壓力的場合where cables are under some impactpressure in the mine
mhyv32huyv32	煤礦用聚乙烯絕緣細圓鋼絲鎧裝阻燃聚氯乙烯護套電纜pe insulated fine round steel wire armored fire retardant pvc sheathed ephone cables for use in mines	礦井中垂直敷設(shè)或承受較大拉力的場合vertically laid or laid where the cables are under big impactpull force in mines

電纜結(jié)構(gòu)示意圖iiiustration of cable structure

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zui小彎曲半徑minimun bending radius	mhvv mhyv mhvvr mhyvr 型電纜為電纜外徑的15倍，其它型號為外徑的20倍15 times of the cable outer diameter of mhvv mhyv mhvvr mhyvr,20times for the rest

電纜規(guī)格 specifications

型號model	規(guī) 格specifications	導體結(jié)構(gòu)（根數(shù)/直徑）mm conductor structurenumber/diameter
mhyvr mhvvr	1x2	1/0.28鍍錫銅線 +6/0.28鍍錫鋼線1/0.28 tinned copper wire +6/0.28 tinned steel wire
mhvv22 mhvv32 mhyv22 mhyv32	2x2-100x2	1/0.5; 1/0.8
mhvv mhyv	1x2-100x2	1/0.5; 1/0.8

電纜主要技術(shù)性能 major technical performances

1、電纜導體直流電阻及固有衰減

dc resistance of the conductorintrinsic attenuation

型號model	+20℃導體直流電阻（≤ω/km）dc resistance of conductor at 20℃	固有衰減（800hz）≤db/km intrinsic attenuation
mhvvr mhyvr	260	4.63
mhvv22 mhvv32 mhyv22 mhyv32 mhvv mhyv	95（0.5mm）; 36.70.8mm	1.320.5mm; 0.950.8mm

2、電纜其它技術(shù)性能 other major technical performances

序號serial number	項目items		型號model:mhvv mhvvr mhvv22 mhvv32	型號model:mhyv mhyvr mhyv22 mhyv32
1	+20℃線芯導體直流電阻（ω/km）line core dc resistance at 20℃		見上表 see above table
2	電纜固有衰減（≤dm/km）cable intrinsic attenuation		見上表 see above table
3	+20℃絕緣電阻（≥mω·km）insulating resistance at 20℃		110 ; 40mhvvr	3000 ; 110mhyvr
4	1min工頻交流電壓試驗lmin power frequency alternating current pressure test	芯-芯core - core芯-鎧裝層core - armoring	1000v不擊穿 1000v no breakdown	1500v不擊穿1500v no breakdown
5	工作電容（≤μf/km）service capacity		0.12	0.06
6	單根垂直燃燒試驗single wire burning test		mt386
7	成束燃燒試驗group burning test		符合gb/t 18380.3標準中b類成束試驗要求conforms to gb/t18380.3 standard b types group test