电缆导体允许的长期最高工作温度
Max permissable continuous operating temperature of conductor 
聚氯乙烯架空电缆：70℃
PVC insulated aerial cable: 70℃
聚乙烯绝缘架空电缆：75℃
PE insulated aerial cable: 75℃
交联聚乙烯绝缘架空电缆：90℃
XLPE insulated aerial cable:90℃
短路时（最长持续时间不超过5S）电缆导体的最高温度应不超过：
Max temperature of the conductor during short-circuit (5s maximum duration) shall not exceed :
聚氯乙烯绝缘架空电缆：160℃
PVC insulated aerial cable: 160℃
聚乙烯绝缘架空电缆：130℃
PE insulated aerial cable: 130℃
交联聚乙烯架空电缆：250℃
XLPE insulated aerial cable: 250℃
电缆敷设时环境温度应不低于：-20℃
The ambient temperature under installation should not be lower than -20℃