描述
电缆屏蔽层必须一点接地,如果电缆屏蔽层两端A、B都接地,就存在地电位差,则有电流流过屏蔽层,当发生异常状态如雷击时,地线电流将更大。此外,屏蔽层、接地线和大地有可能构成闭合环路,在变化磁场的作用下,屏蔽层内有会出现感应电流,通过屏蔽层与芯线之间的耦合,干扰信号回路
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL m
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL e
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL f
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL g
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL i
DENTAL PORTABLE MOBILE X – RAY MACHINE SYSTEM DIGITAL j