A05B-2255-C102#ESW FANUC

TRICONEX 3664
BAYLEY SPASI23
ABB 3HAC025338-006
ABB 3HAC025338-006
GE IS420UCSBH4A
GE 369-HI-R-M-0-E-0
PR0S0FT PTQ-PDPMV1

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Description

分为持续噪声、偶发噪声等;按声音干扰模式不同,分为共模干扰和差模干扰。共模干扰和差模干扰是一种比较常用的分类方法。共模干扰是信号对地面的电位差,主要由电网串入、地电位差及空间电磁辐射在信号线上感应的共态(同方向)电压送加所形成。共模电压有时较大,特别是采用隔离性能差的电器供电室,变送器输出信号的共模电压普遍较高,有的可高达130V以上。共模电压通过不对称电路可转换成差模电压

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