Board with cable HJVV

Communication cable model of HYA HYAC HYAT HPVV HYV HJVV HYY armor installed communications cables HYA22 HYV22 HYAT22 HYY23 HYYT23 HYA23 HYAT23 HYA53 HYAT53 steel wire armored installed communication cable H the YA33 HYAT33 WDZ --HYA53 the HYY33 HYYT33 HYY33 oil-filled communication cable execution HYAT HYYT, standard: YD/T322- 1996 structural characteristics: type of HYA local telecommunication cables, full chromatography insulation, aluminum integrated sheath (ie, longitudinally of the cable, shielded ribbon with jacket bonded into one to form a seal protection layer), with excellent electrical performance, construction features. Electrical properties: (1) DC resistance: 20 ° C, 0.5mm copper, less than is equal 95Ω/km. 1min 1kv two insulated electrical strength: between conductors does not breakdown conductor shielded 1min 3kv without breakdown Insulation resistance: the grounding of each wire and the rest of the line core of HYA cable greater than 10000MΩ.km HYAT cable is greater than 3000MΩ . km. 4 Capacitance: average of 52 ± 2nF/km 5. FEXT defense degree: 150kHz when the average power of the specified combination is greater than 69dB/km