140D035300 SCHNEIDER

IS200EPSMG1A
IS200PSCDG1A
IS200EACFG1A
IS200EDCFG1ADC
IS200EDEXG1B
IS200EHFCH2A
IS200EPDMG1B
IS200GDDDG1AAA
IS200TRESH1ABB
IS200EGDMH1A
151X1207BB01SA01 (Rack)
IS200EPBPC1A
SS1152

分类:

描述

PLC控制系统的地线包括系统地、屏蔽地、交流地和保护地等。接地系统混乱对PLC系统的干扰主要是各个接地点电位分布不均,不同接地点间存在地电位差,引起地环路电流,影响系统正常工作。例如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,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。

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