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Insulating oil dielectric strength tester
A brief analysis of the test purpose of the insulating oil breakdown voltage tester:1.The dielectric strength of electrical insulating materials is the key performance that determines the conditions under which the material can be used. In many cases, the dielectric strength of the material is a decisive factor in the design of the device used. 2.This test method is used to provide part of the required information to judge the suitability of...
Analysis of the current and future trends of international transportation under the 2021 epidemic
For the logistics industry, extreme phenomena have been going on for more than half a year. Whether it is congestion, shortage of empty containers, skyrocketing freight, including shortage of railway capacity, shortage of ships, and shortage of trucks, none of them constitute a single root cause. The problem now is that everything is in short supply.A large backlog of heavy cabinets, international shipping companies have no choice but to "jump...
The significance of measuring the interfacial tension of insulating oil and the detection method of interfacial tension
The interfacial tension between oil and water reacts to the affinity between oil and water. If the tension is large, oil and water are not easily miscible (emulsified), and oil is easy to dehydrate during refining (an important indicator of insulating oil is that trace water PPM cannot exceed the standard). It is not easy to absorb water during operation, so the standard of oil changer oil should stipulate that its interfacial tension should be...
PS-ZD20T Three Phase Winding Resistance Tester
I. GeneralDC resistance of transformer is the essential item to be tested in semi-finished product, finished product delivery test, installation, handover test and preventive test by electric power department, and is effective to help find manufacturing defects such as materials selection for transformer coil, welding, looseness on connection, strand breaking, wire breaking and so on, as well as hidden dangers after operation. To satisfy the...
Moisture analysis
Moisture analysis covers a variety of methods for measuring moisture content in solids, liquids, or gases. For example, moisture (usually measured as a percentage) is a common specification in commercial food production. There are many applications where trace moisture measurements are necessary for manufacturing and process quality assurance. Trace moisture in solids must be known in processes involving plastics, pharmaceuticals and heat...
Transformer Oil Flash Point and its Importance
Flash point of the transformer oil is 140˚C. In this article, we will discuss the flash point of the transformer oil and what is its importance. What is the Flash Point of Oil? The transformer oil on heating hydrocarbon present in the oil releases enough vapors. The vapor so produced on heating may or may not produce a flash on the application of flame depending on the flash point of the oil. All types of oil have a different flash...
Determination of flash point— Rapid equilibrium closed cup method
1 Scope This standard specifies a kind of paint (water-based paint), varnish, lacquer base and adhesive with a closed cup flash point in the range of 130℃～300℃ Method for the determination of closed cup flash point of solvents, solvents, petroleum and related products. When using an instrument with a flash point detector (A.1.6), this standard also It is suitable for the determination of the flash point of fatty acid methyl...
Chinese traditional festivals – Spring Festival
The Spring Festival is the most important festival for the Chinese people and is when all family members get together, just like Christmas in the West. All people living away from home go back, becoming the busiest time for transportation systems of about half a month from the Spring Festival. Airports, railway stations and long-distance bus stations are crowded with home returnees. The Spring Festival falls on the 1st day of the 1st lunar...
Difference table of two models of potentiometric titrators
PS-DD600 PS-DD3D modelFeed accuracy(ml)Number of methods = method template + user methodsave resultone-step dosingconnect computerAutomatic calculationtotal caculationprint reportIndependent mixing tablePermission to log inPS-DD3D0.00054+16100√√√√√√secondaryPS-DD6000.0005100+million√√√√√ Multistage modelTitration needs metPS-DD3DIt is suitable for most ordinary users, the feeding accuracy is 0.0005ml, and there are 20 methods that can...
How to choose the right transformer oil breakdown voltage（bdv） tester?
If you are going to choose the latest and new range of high-grade and advanced transformer oil breakdown voltage tester, it is better to keep in mind some essential points and focus on precautions that are associated with transformer oil breakdown voltage test. ● It is important to place or remove the oil cup. It should be done under the condition of power off. ● Don’t forget to check the distance between the electrodes. It is also...