When using a clamp ammeter, the following points should be noted:
1. When measuring on a high-voltage circuit, it is prohibited to connect wires from a clamp ammeter to another meter for measurement. When measuring the current of each phase of high-voltage cables, the distance between cable heads should be at least 300mm, and the insulation should be good. It can only be carried out when it is considered convenient for measurement.
2. When observing the timing of the watch, special attention should be paid to maintaining a safe distance between the head and the charged part. The distance between any part of the human body and the charged part should not be less than the entire length of the clamp watch.
3. When measuring the current of low-voltage fusible fuses or horizontally arranged low-voltage busbars, each phase of fusible fuses or busbars should be protected and isolated with insulation materials before measurement to avoid causing phase to phase short circuits
4. When using a high-voltage clamp ammeter, attention should be paid to the voltage level of the clamp ammeter. It is strictly prohibited to use a low-voltage clamp ammeter to measure the current of the high-voltage circuit. When using a high-voltage clamp meter for measurement, it should be operated by two people. Non duty personnel should also fill out the second type of work permit. When measuring, they should wear insulated gloves, stand on insulated pads, and not touch other equipment to prevent short circuits or grounding.
5. After the clamp ammeter measurement is completed, turn the switch to the maximum range to avoid overcurrent during the next use; And should be stored indoors in a dry place
6. It is strictly prohibited to measure when one phase of the cable is grounded. ( https://www.dgzj.com/ All rights reserved to prevent ground breakdown and explosion caused by low insulation level of cable heads, which may endanger personal safety.
7. When measuring with a clamp meter, the current of the nearby wires also affects it, so it is also important to pay attention to the equal position of the three-phase wires.
8. Do not operate with electricity during maintenance to prevent electric shock.
