1. The clamp meter should be mechanically zeroed before measurement;
2. Select the appropriate clamp meter range: adjust from large to small range or look at the nameplate value for estimation;
3. When the minimum range of the clamp meter is used to measure, and the reading is not obvious, the wire under test can be wound a few turns, and the number of turns should be based on the number of turns in the center of the jaw, then the reading = indication value × range / full deviation × number of turns;
4. When measuring, the conductor under test should be in the center of the jaws, and the jaws should be closed tightly to reduce errors;
5. After the measurement is completed, the switch of the clamp meter should be placed at the most range. In layman's terms, the clamp meter has a digital display and a pointer display. When measuring, the approximate range of the current to be measured is estimated. Pay attention to the selection of the clamp meter range, and try to choose the appropriate range to reduce errors. In addition, try to clamp the wire between the jaws of the clamp meter. If the measured current is too small, you can wind the wire into multiple wires, and then divide the measured value by the number of wires. Be careful not to measure the exposed wire to avoid electric shock Danger. If it is a clamp meter that can measure voltage and other functions, unplug the test leads when measuring current. Furthermore, in a three-phase load, the jaws clamp one wire to measure the current of the current wire, and clamp two to measure the current of the third wire.
