Use and Precautions of Transformer Type Clamp Ammeter
Instructions
(1) Mechanical zero adjustment is required before measurement
(2) Select the appropriate range, choose the large range first, and then select the small range or see the nameplate value for estimation.
(3) When the reading is not obvious when using z small range measurement, you can wind the measured wire for several turns, the number of turns should be based on the number of turns in the center of the jaw, then the reading = indicated value × range / full deviation × Number of turns
(4) After the measurement is completed, the transfer switch should be placed at the maximum range.
(5) When measuring, the wire under test should be in the center of the jaws, and the jaws should be closed tightly to reduce errors.
Precautions
(1) The voltage of the line under test should be lower than the rated voltage of the clamp meter.
(2) When measuring the current of a high-voltage line, wear insulating gloves, wear insulating shoes, and stand on an insulating mat.
(3) The jaws should be closed tightly and the range cannot be changed with power on.
