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產品用途:本產品適用于固定敷設在礦井作通信干線及分線箱與電話機連接線
scope of application:this product is fit for being laid in fixed placed in mines for the connection of communication trunk linesjunction boxtelephones.
執行標準 standards implemented: q/3210hl29-2003
型號、名稱及使用范圍 model desc-riptionsuse scope
型 號model
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名 稱desc-riptions
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使 用 范 圍scope of application
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| mhvvhuvv | 煤礦用聚氯乙烯絕緣阻燃聚氯乙烯護套電話電纜pvc insulated fire retardant pvc sheathed telephone 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話電纜pvc insulated fire retardant pvc sheathed soft telephone cables for use in mines | 礦井中分線盒、分線箱與電話機連接的場合where connection between junction boxtelephone 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話電纜pvc insulated steel tape armored fire retardant pvc sheathed telephone 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話電纜pvc insulated fine round steel wire armored fire retardant pvc sheathed telephone cables for use in mines | 礦井中垂直敷設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話電纜pe insulated fire retardant pvc sheathed telephone 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話電纜pe insulated fire retardant pvc sheathed soft telephone 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話電纜pe insulated steel tape armored fire retardant pvc sheathed telephone 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話電纜pe insulated fine round steel wire armored fire retardant pvc sheathed telephone cables for use in mines | 礦井中垂直敷設或承受較大拉力的場合vertically laid or laid where the cables are under big impactpull force in mines |
電纜結構示意圖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 | 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 |
電纜規格 specifications
型 號model
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規 格specifications
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導體結構(根數/直徑)mm conductor structurenumber/diameter
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| 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
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+20℃導體直流電阻(≤ω/km)dc resistance of conductor at 20℃
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固有衰減(800hz)≤db/km intrinsic attenuation
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mhvvr mhyvr
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260
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4.63
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mhvv22 mhvv32 mhyv22 mhyv32 mhvv mhyv
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95(0.5mm); 36.70.8mm
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1.320.5mm; 0.950.8mm
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2、電纜其它技術性能 other major technical performances
序 號serial number
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項 目items
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型 號model:mhvv mhvvr mhvv22 mhvv32
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型 號model:mhyv mhyvr mhyv22 mhyv32
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1
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+20℃線芯導體直流電阻(ω/km)line core dc resistance at 20℃ | 見上表 see above table | ||
2
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電纜固有衰減(≤dm/km)cable intrinsic attenuation | 見上表 see above table | ||
3
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+20℃絕緣電阻(≥mω·km)insulating resistance at 20℃ | 110 ; 40mhvvr | 3000 ; 110mhyvr | |
4
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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
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工作電容(≤μf/km)service capacity | 0.12 | 0.06 | |
6
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單根垂直燃燒試驗single wire burning test | mt386 | ||
7
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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 | ||
