WDZR-DZY22、750V、1500V．3000V

一、執行標準Standard
TB／12YJ4229-2002
二、耐壓等級Voltage：
   250V、750V、1500V．3000V
三、型號Type：
   WDZR-DZY22、WDZR-DZYR22
四、產品結構Structure：
導電線芯十絕緣層+組合防水層+鎧裝層+隔氧層+外護層
   Conductor + Insulation + Combination waterproof layer + armored layer + Oxygen insulation layer + outer sheath
五、生產范圍Product Specification
   芯數為單芯．截面為0.5-400mm2。
六、適用范圍Applications
   該電纜適用于地鐵隧道．輕軌、車站等人員相對集中．環境相對密閉的場所，因城市軌道交通多在地下．一旦發生火災．地下封閉的環境給人員逃生和消防工作帶來很大的困難，這些決定了敷設在該場所內的電纜不僅應具有很高的阻燃要求，而且特別要求在燃燒時不產生濃煙及有毒害作用的鹵酸氣體．減少對設備和儀器儀表產生的“二次災害”．同時該電纜還具有耐日光老化，防水及防鼠等性能，因此該電纜尤其適用于地鐵隧道和輕軌沿線及配電柜與地鐵之間．及地鐵和輕軌車站內部的電氣連接．作為直流牽引的電力傳輸。
   The cables are used in dense locations as subway tunnel device and stations. Once fire happening, the close environment would make fleeing and fire protection difficult. So it concludes that the laid cables in dense locations must have high flame resistance as well as not bringing smoke and deleterious gas with halogen. Therefore, it would decrease“the second disaster” for machines and apparatus and the cables have performances of sunlight resistance．waterproof and resistance to gopher Generally．the cables are suitable for subway tunnel device．between electric cable net and subway for power transformation 0f D．C．Traction
七、產品型號說明：Type
   WDZR-DZY22--低煙無鹵阻燃交聯聚烯烴絕緣和護套銅帶鎧裝地鐵隧道輕軌直流電纜，    A類阻燃
   Subway tunnel device D C cables having low emission of smoke non-halogen
   Flame resistance rank A
   WDZR-DZYR22--低煙無鹵阻燃交聯聚烯烴絕緣和護套銅帶鎧裝地鐵隧道輕軌軟直流電纜    A類阻燃
   Subway tunnel device D C flexible cables having low emission of smoke，non-halogen flame resistance rank A
八、電纜特性：Specifications
   1、直流電纜導電線芯的長期允許工作溫度應不超過90℃。
   Long-term conductor temperature no exceeding 90℃
   2、短路時長持續時間不超過5s．其導電線芯的高溫度不超過250℃。
   When short circuit happens the longest continuous time is not more than 5 seconds and the highest conductor temperature does not exceed 250℃
   3、敷設時的環境溫度應不低于O℃。
   Environment temperature not less than O℃．as laying．
   4、電纜敷設時的小彎曲半徑應不小于電纜外徑的12倍。
   The smallest flexible radius should not be less than 12 times of cable over-diameter as lying
   5．低煙無鹵特性：滿足GB／T 17560-1998與GB／T 17651-1998的要求；
   Performance of low emission of smoke and non-halogen complying with GB／T1 7560-1998 and GB／T 17651-1998
   1，電導率≤10μs／mm；
   Conductivity≤10 μs／mm：
   2、DH值≥4.3。
         PH value≥4.3
   3、電纜燃燒煙密度    透光率≥60%。
   Smoke density of cable combustion Transparence ratio≥60%
   6、煙氣毒性達到公共電纜燃燒級二級水平：
   Toxicity index up to the second level in safety ranks。f cables combustion
   7、電纜阻燃性能達到GB／T18380.3-2001電纜成束燃燒試驗A類的要求；
   Flame resistance performance according to GB／T18380 3-2001 type A
   8、電纜的防水性能非常優異．可以長期浸泡在水中使用，而對其電性能影響很小。
   The cable have excellent waterproof and are used in water for a long time but it doesn’t affect electric performance of cable.
9、電纜具有防紫外線性能．防紫外線性能完全能夠滿足GB 14049標準的要求：電纜在大氣和日光老化的作用下，試樣經過42天老化后，護套的抗拉強度和裂伸長率變化率應不超過±30％；經過21天老化后，護套的抗拉強度和斷裂伸長率變化率應不超過士15％的范圍。
   The cables have capability of ultraviolet radiation resistance．conforming to GBl4049. Exposed in air and sunlight for 42 days．the variation of tensile strength and elongation at break of the sheath doesn‘t exceed ±30％,;and for 21 days．the variation does not exceed ±15％.
   10、電纜具有防鼠咬性能．通過與試樣對比．經過連續兩周試驗．試樣保護率≥95％。
   Resistance to gopher：The protection radio of the cable is more than 95％in two-week’s test by comparing the original cable.
   11、可以根據用戶需要生產其它型號和規格的直流電纜．也可提高電纜的耐溫等級到125℃．
We can manufacture other type cables according to consumer needs，and can make heat-resistant up to 125℃。