程控局用交换机电缆HPVV22 铠装通信电缆HYA22 HYV22 HYAT22 HYY23 HYYT23 HYA23 HYAT23 HYA53 HYAT53 铠装通信电缆HYA33 HYAT33 WDZ-HYA53 HYY33 HYYT33 HYY33 充油通信电缆HYAT HYYT 3;通讯电缆型号说明:市内通讯电缆适用于固定敷设架空或地埋 HYA:铜芯实心聚烯烃绝缘挡潮层聚乙烯护套市内通讯电缆 HYAT:铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套市内通讯电缆 HYAC:铜芯实心聚烯烃绝缘自承式挡潮层聚乙烯护套市内通讯电缆 HYA53:铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢塑带铠装聚乙烯护套通讯通信电缆 HYAT53:铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢塑带铠装聚乙烯护套市内通讯电缆 HYA22:铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢带铠装聚氯乙烯护套市内通讯电缆 HYA23:铜芯实心聚烯烃绝缘挡潮层聚乙烯护套钢带铠装聚乙烯护套市内通讯电缆 HYAT22:铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢带铠装聚氯乙烯护套市内通讯电缆 HYAT23:铜芯实心聚烯烃绝缘填充式挡潮层聚乙烯护套钢带铠装聚乙烯护套市内通讯电缆