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特种电缆额定电压U0推荐值
Table1 The recommended figure of U0
系统最高电压Um/ kV The maximum system voltage | 额定电压/Kv Rated Voltage/ kV | |
A类、B类 System categories A and B | C类 Systems categories C | |
1.2 | 0.6 | 0.6 |
1、 导体额定工作温度The rated temperature of conductor
电缆导体的最高额定工作温度为：交联聚乙烯绝缘90℃，聚氯乙烯绝缘７0℃．
The maximum assigned temperature of the cable conductor is ： XLPE insulated is 90℃, PVC insulated is70℃.
短路时（最长持续时间不超过5s）电缆导体的最高温度不超过: 交联聚乙烯绝缘250℃, 聚氯乙烯绝缘160℃。
During having a short circuit, lasting less than 5 seconds, the maximum temperature of the cable conductor shall not be above: XLPE insulated is 250℃, PVC insulated is160℃
2、 敷设环境温度Ambient temperature for laying
电缆敷设时的环境温度应不低于0℃，否则需要事先预热。
During the cable laying, the ambient temperature must be above 0℃，if not the cable need be preheated.
3、 安装弯曲半径The bend radius
安装时电缆最小弯曲半径见表2.
The minimum bending diameter must be above the following standard:
