Technical Guide
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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 -
Insulation oil dielectric strength test procedure and precautions
Test equipment Insulating oil breakdown voltage tester Work procedure Sample container The volume of the sample should be approximately three times that of the sample volume. It is better to use a brown bottle for sampling. Transparent bottles should be stored in the dark before the test. Plast...Read more -
Application and Selection of Transformer Capacity Characteristic Tester
The transformer capacity characteristic tester is a professional device used in the power system to measure key parameters such as transformer capacity, no-load loss, and load loss. It plays a significant role in electricity inspection, equipment handover tests, and operation and maintenance. I. ...Read more -
Precautions and Maintenance Methods for Closed Cup Flash Point Testing
Precautions for Using the Closed Cup Flash Point Tester When using this machine, in order to reduce the risks of fire, electric shock or personal injury, you should always follow the basic safety precautions. Read and understand all the instructions. Operate according to the warnings and instru...Read more -
Precautions for Testing Closed-Type High-Voltage Switchgear
When conducting tests on metal enclosed switchgear, the following points should be noted: a. The busbars in the cabinet or in other compartments, due to the poor quality of the copper material (some manufacturers use aluminum as the conductor), have a high content of impurities, which results in...Read more -
The generation method of the test voltage for communication and the medium-frequency power supply device
Generation of test voltage for communication The method of generating the test voltage for communication The industrial frequency high voltage is usually generated by using high-voltage test transformers; for test samples with large capacitance, a series resonant circuit can be adopted to gen...Read more