DANSK DS/HD 21.7 S2:1997
额定电压450/750V及以下聚氯乙烯绝缘电缆 第7部分:导体温度90℃的内部布线用单芯无护套电缆
Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 7: Single core non-sheathed cables for internal wiring for a conductor temperature of 90° C