What should be paid attention to in the process of using clamp meter
1. Read the instruction manual carefully before use to find out whether it is AC or AC/DC dual-use.
2. The voltage of the circuit under test cannot exceed the value marked on the clamp meter, otherwise it may easily cause a grounding accident or cause an electric shock hazard.
3. Only the current of one phase wire can be measured at a time, and the wire to be tested should be placed in the center of the clamp window, and multi-phase wires cannot be clamped into the window for measurement.
4. Estimate the magnitude of the measured current before measuring with the clamp meter, and then decide which range to use. If it is impossible to estimate, you can first use the maximum range file and then change it to a smaller one to get an accurate reading. It is not possible to use the low current gear to measure large currents. to prevent damage to the meter.
5. The jaws should be tightly closed during measurement. If there is any noise after closing, you can open the jaws and repeat it again. If the noise still cannot be eliminated, check whether the joint surfaces on the magnetic circuit are smooth, and wipe them clean if there is dust.
6. Due to the low precision of the clamp ammeter itself, the following method can be used when measuring small currents: first wind the wire of the circuit under test several times, and then put it into the jaw of the clamp meter for measurement. At this time, the current value indicated by the clamp meter is not the actual value being measured. The actual current should be the reading of the clamp meter divided by the number of turns of the wire.
7. Do not operate with power on during maintenance to prevent electric shock.
