Technical
-
The test principle and on-site test method of SF6 micro-water tester
Classification of measurement methods for SF6 The measurement methods for the moisture content of SF6 gas are classified into three types based on different principles: electrolysis method, dew point method and capacitance-resistance method. 1) Electrolysis method. This method uses the Coulomb ...Read more -
The Significance and Detection Strategies of Partial Discharge in Switchgear Cabinets
The significance of detecting partial discharge Conventional non-withstand voltage and withstand voltage tests are difficult to detect insulation defects such as partial discharge. Partial discharge will lead to a vicious cycle of insulation deterioration and defects in power equipment, and in ...Read more -
Application and Selection of Transformer Comprehensive Tester
I. Core Application Scenarios The application of the transformer comprehensive tester runs throughout the entire lifecycle of the transformer, and the main scenarios are as follows: Production verification: The transformer manufacturer uses it for factory inspection to ensure product quality. Acc...Read more -
Transformer DC Resistance Testing Methods and Testing Instruments
The detection of the DC resistance of transformers is a core item in the handover, major overhaul, and preventive tests of transformers. It is mainly used to check the welding quality of windings, the contact condition of the tap changers, and whether there are any short circuits between windings...Read more -
Measurement methods and standard requirements for the circuit resistance of high-voltage switches
Measurement of loop resistance Main loop In order to compare the switchgear and control equipment that have undergone the temperature rise test (type test) with all the same model switchgear and control equipment that have undergone factory tests, the measurement of the main circuit resistance s...Read more -
The significance of leakage current test and DC withstand voltage test
Insulators do not conduct electricity only in a relative sense. As the external environmental conditions change, in reality, no insulating material is completely non-conductive. Any insulating material, when a voltage is applied at both ends, there will always be a certain current flowing through...Read more -
Precautions for Using the Handheld Transformer DC Resistance Tester
Press the “Confirm” button to stop the test. The instrument power will automatically disconnect from the winding, and discharge at the same time. An audible alarm will sound. At this point, the display returns to the test interface. You can enter the test by selecting different curren...Read more -
Classification and Field Application of Partial Discharge Test Instruments
I. Classification of Partial Discharge Test Instruments Based on different detection principles, partial discharge test instruments can be classified into various types, each with its own applicable scenarios and technical features. Pulse Current Method As a standard testing method, this approach...Read more -
Classification and Application of Primary Current Temperature Rise Test Set
The high-current temperature rise testing equipment can be classified according to the number of output current phases and functional purposes to adapt to different testing scenarios. I. Classification by Output Current Phases Single-phase high-current generator: mainly used for single-phase equi...Read more -
Classification and Selection Method of Ultra-Light Test Transformer
I. Classification by Insulation Medium 1. Oil-Immersed Internal high-performance insulating oil is filled to achieve both insulation and heat dissipation. Through structural optimization, the weight is 10%–20% lighter than that of traditional equipment of the same specification. Advantages: Stabl...Read more -
Electrical Test Methods for Power Insulation Tools and Safety Appliances
Insulating tools and safety equipment are indispensable tools and appliances for electrical maintenance, live operation, and live inspection. To ensure the safety of personnel engaged in operation and maintenance as well as live work, it is necessary to conduct acceptance tests on newly used insu...Read more -
Closed mouth flash point tester test method
Insulating oil closed flash point test When the oil is heated under certain conditions, it undergoes decomposition and continuously releases combustible gases. The amount of these gases increases with the rise in temperature. When the oil is heated to a certain temperature, combustible gases form...Read more