Communication Cable Communication Cable Model inflatable models HYA HYAC Bureau electric models with communications HJVV HJVVP ZR-HJVV ZR-HJVVP armored electrical communication model HYA53 WDZ-HYA53 ZRC-HYA53 filled armored communication cable model HYAT53 WDZ-HYAT53 ZRC-HYAT53 other armor installed communication cable model HYA22 HYV22 HYAT22 HYY23 HYYT23 HYA23 HYAT23 steel wire armored communication cable HYA33 HYAT33 WDZ-HYA53 HYY33 HYYT33 HYY33 oil-filled communication cable HYAT ZRC-HYAT WDZ-HYAT HYYT plastic telephone communication cable Executive Standard: YD / T322-1996 full plastic telephone cable structural features: HYA communication cable type city-wide chromatography high-density polyethylene insulation, integrated aluminum sheath (ie, shielded ribbon cable and the sheath longitudinally into one cohesive, form a seal protection layer), with excellent electrical performance, construction and convenient features. Plastic telephone communication cables main electrical properties: 1. DC resistance: 20 ℃, 0.4 ≤148 / km 0.5 ≤95.0 / km 0.6 ≤65.8 / km 0.8 ≤36.6 / km 2. Insulation Electric Strength:???? Between conductors 1min 1kv no breakdown conductor and shield 1min 3kv not breakdown 3. Insulation resistance: each core line with the rest of the core ground, inflatable cable than 10000MΩ.km, filled cable than 3000MΩ.km. 4. Capacitance: mean 52 ± 2nF / km 5. FEXT defense degree: the average value of the specified 150kHZ combination of power greater than 69dB / km.