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。
NEW PARKER 07R324VC PRESSURE REGULATOR
NEW – Lot of 10 – Parker 3/8″ Brass Low Pressure Valve
PARKER A1 CONSTANT PRESSURE EXPANSION VALVE
PARKER PNEUMATIC PRESSURE REGULATOR 3/8″ Ports 06R213AC
Expedited shipping available
PARKER PRESSURE FLOW CONTROL # PCK1020S-11
PARKER CONVUM DIGITAL PRESSURE SENSOR MPS-P32N-PG
PARKER PRESSURE REGULATOR
Parker-Finite Pneumatic pressure regulator F06R313AC
PARKER ASIC PERFORMER PRESSURE TRANSDUCER TRANSMITTER
PARKER ASIC PERFORMER PRESSURE TRANSDUCER TRANSMITTER
PARKER HI PRESSURE LIVE SWIVEL