摘要
在自动化仪表系统中,电缆的屏蔽接地是抗干扰的一项重要措施,在工程领域中,电缆的屏蔽有单端接地和两端接地两种接法,单端接地主要是抗容性耦合,两端接地是抗感性耦合。本文详细地分析了电缆屏蔽单端接地和两端接地的区别和抗干扰原理,提出了总屏加分屏结合的方案。并分析了屏蔽双绞线的抗干扰原理。
In the Instrument system, the shielding cable grounding is one of the important measures of anti-interference, single point grounding is mainly anti capacitive coupling, grounding on both ends is on anti inductive coupling. In this paper, a detailed analysis of the difference between single point grounding and grounding at both ends as well as anti interference principle, overall shield and internal shield is put forward. Analysis of shielded twisted-pair cable anti-interference principle.
出处
《变频器世界》
2015年第8期86-89,共4页
The World of Inverters
关键词
接地
容性耦合
感性耦合
屏蔽双绞线
Grounding
Capacitive coupling
Inductive coupling
Shielded twisted wires
