1. What is the principle for diagnosing internal faults in transformers based on chromatographic analysis data of transformer oil?The insulation of power transformers is mostly composed of oil-paper composite insulation, and the hydrocarbon gases generated by internal latent faults come from the thermal cracking of oil-paper insulation. The gas production…

The power frequency AC withstand voltage test is to apply a certain voltage to the tested object and maintain it for a certain period of time to consider the insulation capacity of the tested object to withstand various voltages, thereby ensuring the safe operation of the equipment. Although many insulation…

The dielectric strength tester for insulating oil plays an important role in the power industry. It can be used to detect the dielectric strength of insulating oil, thereby evaluating the performance and reliability of insulating materials. However, some common malfunctions may be encountered when using this instrument. This article will…

Precautions for using DC high-voltage generator:1. Before the test, check whether the test object, DC high-voltage generator, voltage doubling cylinder, discharge rod, grounding wire, and test object wiring are properly connected, and whether the grounding wire is connected correctly.2. The high-voltage output wiring must be firm to prevent the high-voltage…

The series resonance testing device is a device used to test the performance of series resonance in a circuit. It can help us analyze parameters such as resonant frequency and resonant impedance in a circuit, thereby judging the quality of the circuit. In practical applications, we need to distinguish the…

1. Transformation ratio testThe transformer ratio test ensures that the transformer winding has the appropriate number of turns to generate the required voltage. This ratio is a measure of the voltage applied to the primary terminal and the voltage measured at the secondary terminal.2. Winding resistance testWinding resistance test, also…

A high current generator is a testing equipment for electrical debugging in various industries that requires high current locations. It can be used in power plants, substations, electrical equipment manufacturers, scientific research, laboratories, and other units. The equipment has the characteristics of small size, light weight, good performance, and convenient…

The partial discharge detection system has a unique dual channel simultaneous measurement function, which can conveniently measure multiple samples simultaneously or multiple points of a single sample simultaneously. This makes it possible to diagnose the discharge location of large transformers, and this method has been successfully applied to the detection…

1. Do you know how many reactors to bring for the withstand voltage test?Step 1: Before going to the site, it is necessary to clarify the information of the tested object in advance. Find a person to inspect the electrical equipment nameplate at the construction site in advance, or communicate…

Voltage withstand test is a non-destructive test used to check whether the insulation capacity of products under frequently occurring transient high voltage is qualified. It applies high voltage to the tested equipment within a certain period of time to ensure that the insulation performance of the equipment is strong enough.…