Try to explain in detail by combining pictures and words, thank you
Current clamp meter only measuring one conductor, the measured wire clamp should be placed in the center of the window, the window with all phase conductors can not measure.
1, in the use of clamp ammeters should carefully read the instructions, it is AC or AC / DC clamp meter.2, the measured voltage clamp meter shall not exceed the values marked on the ground, otherwise easy to cause the accident, or cause the risk of electric shock.
Clamp meter before the measurement was estimated the size of the current, and then decide which range. If you can not estimate, you can use the maximum range file, and then appropriate to smaller, to accurate readings. Small current cannot be used to measure high current. To prevent damage to the clamp type meter.
Clamp type table close to the closed jaw during measurement, after the closure of such as noise, can open a jaw full weight, if still can not eliminate noise, should check the magnetic circuit the jointing surface is smooth, with dirt to wipe clean.
