Technology Class

The dielectric loss factor tgδ, as a key indicator for measuring insulation performance, accurately reflects the loss characteristics of insulating materials under the action of electric fields. It can sensitively reveal the overall moisture and deterioration of the insulation of electrical equipment, as well as whether there are local defects in small-volume equipment, whether they are penetrating or non-penetrating problems.

The main function of the current transformer, as an indispensable measuring tool in the power system, is to convert the primary side of a high current into the secondary side of a low current through the magnetic effect in order to facilitate measurement and use. The core structure of the device consists of a closed core and windings. Its primary side winding has a low number of turns and is directly connected in series with the circuit of the current to be measured. In practice, the secondary side is usually configured with double or multiple windings to meet different measurement requirements.

Transformer oil chromatograph is an important analytical tool that uses chromatography to quantitatively and qualitatively analyze the gas components dissolved in transformer oil. For power generation and supply companies, this instrument is a key means to monitor whether oil-filled power equipment has potential overheating, discharge and other faults, ensuring the safe and stable operation of the power grid.

In testing cable faults it is necessary to determine the underground cable path, otherwise we cannot locate the point directly above the cable and within the distance of the rough fault. When relocating and remodeling cables, we need to know the underground path of the cable, otherwise we can't work.

In the power supply system, nonlinear issues arise from various elements. For instance, harmonics are generated during the normal operation of generators. Transformers within the grid also contribute to harmonic production. Additionally, DC transmission introduces harmonics, and high-voltage transmission lines can amplify these harmonics. The installation of parallel capacitors in substations is another factor that can lead to the emergence of harmonics. Among these, DC transmission is currently a major source of harmonics in power systems.

As a key equipment in the power system, the stable operation of transformers is crucial to the safety of the power grid. However, transformers may cause deformation of the windings for various reasons during testing, transportation and operation, which in turn affects their performance. In this paper, we will analyze the causes and effects of transformer winding deformation, and discuss effective detection techniques.

Transformer oil in the power industry, is widely used in substations, dielectric strength is a comprehensive index for the transformer oil.RDJDH-100kV integrated insulating oil dielectric loss factor tester, fully automatic completion of the process of heating, temperature control, high-speed data sampling, computing, display, printing and storage.

Learn about DC leakage test methods, benefits, and safety tips for effective insulation testing to ensure equipment safety and reliability.

Learn about DC leakage test methods, benefits, and safety tips for effective insulation testing to ensure equipment safety and reliability.

The power test regulations require a series of insulation performance tests for numerous power equipment such as cables, motors, generators, transformers, mutual inductors, high-voltage switches, lightning arresters, etc. The first step is to perform insulation resistance tests using an intelligent insulation resistance tester.