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MHYV礦用電話電纜 MHYV 礦用通訊 電纜大圖安徽省
MHYV礦用電話電纜 MHYV 礦用通訊 電纜大圖安徽省
礦用電纜型號: MHYV MHYVR MHYVRP PUYV PUYVR PUYVRP MHYBV PUYV31 礦用電纜產品采用:MT818-1999 MHYVR(PUYVR) (1×2 1×4 2×2 5×2 7×2 10×2 )聚絕緣聚氯護套煤礦用電纜,用于礦場作普通傳輸,可使用。 MHY32(PUYV39-1) (1×2 1×4 2×2 5×2 7×2 10×2)聚絕緣鋼絲鎧裝聚氯護套煤礦用電纜用于平巷或豎井或斜井作傳輸。 MHYV(PUYV)(1×2 1×4 2×2 5×2 7×2 10×2)聚絕緣聚氯護套煤礦用電纜用于礦場作普通傳輸,適用于固定敷設。 MHYVRP 7/0.30、7/0.37、7/0.43、7/0.52(1~10對、1×4)聚絕緣銅絲編織屏蔽聚氯護套煤礦用電纜,用于電場較大的場所作傳輸,電纜較。 MHYVP (1×2 1×4 2×2 5×2 7×2 10×2)×7/0.30、7/0.37、7/0.43、7/0.52聚絕緣聚氯護套煤礦用電纜大的場所作傳輸,可用于固定敷設 主要技術性能及指標: 20℃時導體直流電阻 Ω/km 7/0.37 ≤24.5 7/0.43 ≤18.1 7/0.52≤12.1 固有衰減(800~1000HZ) dB/km ≤1.2 20℃時電纜絕緣線芯絕緣電阻 MΩ.km ≥5000 線對工作電容(800~1000HZ) uF/km ≤0.10 近端串音衰減(800~1000HZ) dB/500m ≥70 電感(800~1000HZ) uH/km ≤800 耐交流工頻電壓 1.5KV/1min通過 直流電阻差 ≤環阻的2% 礦用通信電纜的使用特性 導體的長期允許工作溫度-40~+50℃; 平均大相對濕度為≤95%(+25℃時) 允許附設與安裝的溫度應不大于-10℃ 小彎曲半徑:MHYVR型電纜為電纜外徑的10倍,其它型號的電纜為外徑的15倍。 |
根據氣象局的網站,為當前和未來一段時期的生態保護和建設的行動,生態保護和建設計劃(2013 - 2020)"幾天前。新聞,根據計劃提出加強氣象生態建設的支持,預防和控制水土流失的關鍵領域,并促進綜合治理、生物多樣性保護,保護地下水資源和森林、草原、沙漠、濕地和湖泊、農田,七個城市,海洋生態等12個建設任務。In addition, the "plan" put forward three aspects of ecological construction of meteorological guarantee key project construction: one is the ecological meteorological observation network construction and reconstruction of forest, grassland, wetland, desert, city and other ecological meteorological observatory, the new ecological microclimate observation station, automatic observatory on soil moisture and meteorological disasters mobile survey system, preliminary built is given priority to with real time information of three-dimensional ecological meteorological monitoring and data transmission network;Secondly, the construction of ecological meteorological business service platform, the establishment of ecological meteorological early warning index system of comprehensive monitoring and evaluation, establish the ground monitoring and satellite remote sensing data storage and processing system, integrated services platform and establish ecological meteorological information publishing and sharing system, to carry out ecological meteorological disaster monitoring and early warning, ecological protection and construction feasibility climate services;Third, ecological service weather modification ability construction, to strengthen the artificial precipitation in each key zone (snow) and the hail proof work, establish weather modification operation base, the construction of meteorological operation command service platform, improve the ecological service system of weather modification operation, increase ecological water use.Mr.張大同投資顧問,監測已成為生態工作的首要目標。在此背景下,監測設備公司將率先受益,其次是土壤修復和生態保護。儀器、儀表