Voltage measurement of 380V three-phase electricity.
I. Introduction. 380V three-phase electricity is a widely used voltage level in industrial production and home life. In the power system, three-phase electricity has symmetry, therefore, for the voltage measurement of three-phase electricity, we need to adopt special methods to ensure the accuracy and reliability of the measurement. This article will introduce how to measure the voltage of 380V three-phase electricity.
2. Preparations.
Before you start measuring, you need to have the following tools and equipment ready:
1.Voltmeter: Used to measure the voltage of three-phase electricity.
2.Insulating gloves: used to protect the surveyor from electric shock.
3.Insulating rods: used to ensure safety during measurements.
4.Notebook: Used to record measurement results.
3. Measurement steps.
1.Determine the measurement point: Select a suitable measurement point, usually on the power or load side.
2.Disconnect the power supply: Before measuring, it is essential to ensure that the power supply has been disconnected to avoid the risk of electric shock.
3.Connect the voltmeter: Connect the voltmeter to the three-phase electricity to be measured, and pay attention to the connection of the positive and negative poles.
4.Read the voltage value: Open the voltmeter, adjust it to the appropriate range, and read the voltage value of the three-phase electricity.
5.Record the results: record the measurement results in the record book, including the measurement time, measurement point, voltage value and other information.
4. Precautions.
1.During the measurement process, it is necessary to maintain a sense of safety and avoid the risk of electric shock.
2.The selection and use of voltmeters should comply with relevant regulations and standards.
3.For those who are not familiar with the measurement operation, the measurement should be carried out under the guidance of a professional.
4.When recording the measurement results, the accuracy and completeness of the data should be guaranteed.
V. Conclusions. Through the introduction of the above steps and precautions, we can understand how to correctly measure the voltage of 380V three-phase electricity. In the power system, the voltage measurement of three-phase electricity is of great significance to ensure the stable operation of the power system and the safety of equipment. Therefore, we should master the correct measurement method and pay attention to safe operation. At the same time, for those who are not familiar with the measurement operation, the measurement should be carried out under the guidance of a professional to ensure the accuracy and safety of the measurement.