物理发泡聚乙烯绝缘射频同轴电缆
电缆的结构尺寸 Construction adn Dimensions 单位:mm
项 目 Item 标 准 Standard 四 屏 蔽 Quadshield内导体直径 Center Conductor Outside Diameter2.77±0.03 2.77±0.03
绝缘直径 Diameter Over Dielectric
11.50±0.3011.50±0.30外导体屏蔽外径 Outer Conductor Outside Diameter≤12.8≤13.5护套厚度 Sheath Thickness≥1.0 ≥1.0护套外径 Sheath Outside Diameter 15.0±0.415.40±0.4自承式钢丝直径 Diameter Of messenger Steel Wire2.602.60电缆的电气性能 Electricial Performance
项 目 Item标 准 Standard四 屏 蔽 Quadshield缆芯介电强度 (40-60Hz 1min) Kv≥≥1.6≥1.6绝缘电阻500V直流 1 min M Ω.km≥Insulated Resistance≥5000≥5000护套介电强度 浸水(40-60Hz ) Kv≥≥3.0≥3.0特性阻抗 Ω Impedance Ω75±2.075±2.0
衰减常数 Attenuatin Constant dB/100m≤
1:铝箔可采用:自粘铝箔、非自粘铝箔。2:编织覆盖率分别为40%、60%,可根据顾客要求.。3:外导体编织网可按要求增加充油保护层。