九九热免费在线观看_毛片女人毛片一级毛片毛片_欧美在线视频一区二区_在线免费看av片_精品视频9999_99视频网站

 耐火型MHYV HYV22 60*2*0.5通訊電纜．礦用控制電纜

HYA市內通信電纜HYA-HYA市內通信電纜HYAHYA市內通信電纜HYA-HYA市內通信電纜HYA通信電纜型號HYA        HYAC        HYAT        HPVV        HYV        HJVV        HYY               
                                配線電纜型號HPVV        ZR-HPVV               
                                局用電纜型號HJVV        HJVVP        ZR-HJVV        ZR-HJVVP               
                                鎧裝通信電纜型號HYA53        WDZ-HYA53        ZRC-HYA53               
                                填充式鎧裝通信電纜型號HYAT53        WDZ-HYAT53        ZRC-HYAT53               
                                其它鎧裝通信電纜型號HYA22        HYV22        HYAT22        HYY23        HYYT23        HYA23        HYAT23               
                                鋼絲鎧裝通信電纜HYA33        HYAT33        WDZ-HYA53        HYY33        HYYT33        HYY33               
                                充油通信電纜HYAT        ZRC-HYAT        WDZ-HYAT        HYYT               
                                全塑市話電纜執行標準：YD/T322-1996               
                                全塑市話電纜結構特點：        HYA型市內通信電纜采用全色譜高密度聚乙稀絕緣，鋁塑綜合護套(即電纜的縱包屏蔽鋁帶與護套粘結成一體，形成密封護層)，具有電氣性能*，施工方便的特點。

主要電氣性能

1. 直流電阻:20℃, 0.4 ≤148Ω/km 0.5 ≤95.0Ω/km 0.6 ≤65.8Ω/km 0.8 ≤36.6 Ω/km2. 絕緣電氣強度：導體之間1min 1kv不擊穿 導體與屏蔽1min 3kv不擊穿

3. 絕緣電阻：每根芯線與其余線芯接地,充氣電纜大于10000MΩ.km,填充式電纜大于3000MΩ.km。

4. 工作電容：平均值 52±2nF/km

5.遠端串音防衛度：150kHZ時組合的功率平均值大于69dB/km。