描述
测量DCS系统接地电阻是否小于4欧姆。接地电阻的大小与很多因素相关,如接触良好,土壤湿度,导电率等,测量接地电阻可选用的仪器有摇表、钳形表等。
17 LEGACY 3/8″NPT AIR QUICK COUPLERS,A78620?-BG-GRA
20 SNR/SKF/NSK 6205 BALL BEARINGS,NEW
STRIPPIT 2.3750″ ROUND PUNCH & DIE SET,3-1/2″ STYLE
STRIPPIT 1.630 X 1.573 SINGLE-D PUNCH & DIE SET
STRIPPIT 2.9375″ ROUND PUNCH & DIE SET,3-1/2″ STYLE
4 FESTO MFH-5-1/4 PNEUMATIC SOLENOID VALVES,NEW
7 BUSSMANN LPS-RK-300SP LOW-PEAK FUSES,300AMP,NE?W