描述
屏蔽地(AG,Analog Grounding)也叫模拟地,它可以把现场信号传输时所受到的干扰屏蔽掉,以提高信号精度。DCS系统中信号电缆的屏蔽层应做屏蔽接地。线缆屏蔽层必须一端接地,防止形成闭合回路干扰。铠装电缆的金属铠不应作为屏蔽保护接地,必须是铜丝网或镀铝屏蔽层接地。接入公共接地极。
HOFFMAN 38305B1 700 CFM CENTRIFUGAL EXHAUSTER
ABB EHW250WC2P-1L SIZE W5 WELDING CONTACTOR NIB *
BUSSMANN LPJ-15SP LOW PEAK FUSES, LOT OF 1015, NNB
BUSSMANN LPJ-4SP LOW PEAK FUSES, LOT OF 736, NNB
BUSSMANN LPJ-30SP LOW PEAK FUSES, LOT OF 1308, NNB
BUSSMANN LPJ-5SP LOW PEAK FUSES, LOT OF 1090, NNB