1786-TNCLXT4
1786-TNCLXT4
1786-TNCLXT4
8、接地线的截面可根据连接仪表的数量和接地线的长度按下列数值选用：
a)接地线：1mm2 ～2.5mm2；
b)接地干线：4mm2 ～16mm2；
c)接地接线板的接地干线：10mm2 ～25mm2；
d)接地干线：16mm2 ～50mm2；
e)雷电浪涌保护器接地线：2.5mm2 ～4mm2；
9、电浪涌保护器接地线应尽可能短，并且避免弯曲敷设；
10、地系统的标识颜色为绿色或绿、黄两色；
11、仪表或设备的接地端子到接地极之间的导线与连接点的电阻和，称为接地连接电阻。
12、接地极对地电阻与接地连接电阻之和称为接地电阻。
13、仪表及控制系统的接地电阻为工频接地电阻，不应大于4 欧姆。
14、仪表及控制系统的接地连接电阻不应大于1 欧姆。
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