该电缆适用于地铁．隧道．车站等相对密闭人员集中．有很高的阻燃要求．且特别要求在燃烧时不生产浓烟，有毒害作用的卤酸气体及严禁燃烧产生“二次灾害”的苛刻环境下使用。尤其适用于隧道沿线及配电柜与地铁之间的敷设。
 

一、执行标准standard：
企业标准Enterprise’s standard
二．适用范围Applications：
    该电缆适用于地铁．隧道．车站等相对密闭人员集中．有很高的阻燃要求．且特别要求在燃烧时不生产浓烟，有毒害作用的卤酸气体及严禁燃烧产生“二次灾害”的苛刻环境下使用。尤其适用于隧道沿线及配电柜与地铁之间的敷设。
  Suitable for subway．tunnel，station etc with crowded people wherever requires higher flame-retardant，less amount of smoke and poisonous halogen gas when burning and not cause“the second disaster”．Especially suitable for installation and laid along tunnel line．power cabinet and rai1way．
三、使用特性Properties：
    1．产品型号：WZR-DZY(具体规格参见附表)
  Model：WZR-DZY(detail is see the attached table)
  注：①WZR(A、B)-DZY WZR(A、B)-DZY均与上型号等效。
      ②阻燃级别：WZRA--为A类低烟无卤阻燃
                  WZRB--为B类低烟无卤阻燃
                  WZR---为c类低烟无卤阻燃
  2．额定电压750V，1500V
  Rated voltage：750V．1500V
  3．标称截面O.5-400mm2
  Nominal cross section area：O.5-400mm2
  4．导体长期工作温度70℃，短路过载温度可达到130℃(5s)
  Permissible long-term working temperature is 70℃．Max．working temperature of the conductors in short- circuit is 130℃．(5S)
  5．电缆z.ui小允许弯曲半径不超过电缆直径的15倍。
    Allowed Min．bending radius are not more than 1 5 times 0f cable O．D．
  6．电绝缘性能，物理机械性能优异
    Possessing good electrical insulation performance，physical mechanical properties．
7．电缆阻燃性能达到GB／T18380．3-2001电缆成束燃烧试验A、B、C类(IEC332-3)的要求
Flame-residence comforts to the requirement of GB／T1 8380．3-2001(IEC332-3)
8、低烟特性：满足GB／T17650-1998，GB／T17651—1998的要求 
Low-smoke property comforts to GB／T17650-1 998．GB／T17651—1 9989．
9、无卤特性：(1)导电率≤10  μs／mm
               (2)PH值≥4．3
 Non-halogen property：(1)Conductivity≤10 μs／ram
                       (2)PH≥4．3
10、烟气毒性符合GAl32准安全级的要求。
  Smoke poisonous conform to GAl32．
空气敷设长期连续负荷载流量单位：A
Continue loading current of cable laid in air

注：环境温度为40：C Note：environment temperature is 40℃
地铁隧道专用电缆结构参数表Cable construction

编制说明Directions：
    1．低烟无卤阻燃聚烯烃绝缘地铁隧道专用电缆连续负载电流是依据IEC-287电缆载流量计算标准进行计算的，并通过修正确定。
    Continuous loading current of cable is calculated per IEC-287
    2．此地铁隧道专用电缆的长期工作温度不超过70℃。
    Long-term working temperature is not more than 70℃．
    3．布线方式分为接触与非接触两种，其中非接触指电缆间的相互距离大于二倍的电缆外径．接触即指电缆相互靠在一起或相互间距小于二倍的电缆外径。
  Laid method：contact and non contact．Non contact laid means the distance between the laying cable is more than 2 times of cable O．D．Contact laid means the distance between the laying cable is not more than 2 times of cable O．D．
    4．周围环境温度以40℃作为基准温度。
    Environment temperature is supposed 40℃ as basic temperature
环境温度变化修正系数表
The revised coefficient of the environmental temperature change

电缆敷设于塑料槽中载流量修正系数表 
The revised coefficient of the cable loading current lay in plastic flume

注：K系指在塑料槽中有负荷电缆根数与总的电缆根数之比(负荷电缆我指通是流发热电缆，信号线除外)。
                                                    Note．  k=   Loading current cables

                                                                      Total number of the cables
(Loading current cables means cables that generating heat when working excet for signal line)
电缆穿管敷时载流量修正系数表
 The revised coefficient of the cable loading current lay in tube

注：
1．穿管根数指有负荷发热的电缆根数。
2．穿管线的体积不超过管体积的40％。
3．当管并列敷设时乘0．95修正系数。
Note：
1) The number of the cable in tube means the number of the cables which generates heat while loading.
2)The cable’s volume is not more than 40％ of the rube’s volume．
3)When cable laid stand by stand，multiply the revised coefficient with 0.95