Usually, different grades of transformer oil can be selected according to the regional temperature. Different grades of transformer oil are selected according to the temperature di
Jul 23, 2022
The daily inspection of transformers can refer to the following regulations: Transformers with a capacity of 315OkvA and above in unattended substations shall be at least once ever
Jul 21, 2022
Ground resistance measurement methods usually include the following: two-wire method, three-wire method, four-wire method, single-clamp method and double-clamp method. Each has its
Jul 20, 2022
Battery charge and discharge testers are widely used in electric power, telecommunications, railways, manufacturing and other industries. In the previous sections, Guodian Zhongxin
Jul 19, 2022
Sulfur hexafluoride gas is a colorless, odorless, non-toxic and non-flammable gas at normal temperature and pressure, and its chemical properties are very stable. It is 5 times the
Jul 18, 2022
1. Standard 4-phase voltage and 3-phase current output, with 4-phase voltage and 3-phase current output, can easily carry out various combination outputs for various types of prote
Jul 16, 2022
①. The dropping point is an indicator of the heat resistance of the grease, and the high service temperature of the grease can be roughly understood through the dropping point. Gen
Jul 17, 2022
(1) The voltage loop of the loop resistance tester (also called the switch loop resistance tester) is open, and there is no strong electric field interference at the test site. In
Jul 15, 2022
1. Requirements for the analysis room of the chromatograph (1) There should be no strong magnetic field, flammable and strong corrosive gas around the analysis room. (2) The indoor
Jul 14, 2022
DC high voltage generators are widely used in power testing departments. It is an important equipment for the high-voltage test profession to conduct DC high-voltage tests on high-
Jul 13, 2022
In sandy and stony soils with high ground resistivity, in order to meet the requirements of low grounding resistance, a grounding grid composed of multiple grounding bodies in para
Jul 12, 2022
1. What is the general test value of grounding resistance? 1. If it is an independent lightning protection grounding resistance, it should be less than 10 ohms. 2. If the safety gr
Jul 11, 2022
