Technical
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General Test Scheme for DC High Voltage Generator on Site
Before using the tester, it is necessary to check the integrity of the DC high-voltage generator. The connecting cables should have no open circuits or short circuits, and the equipment should be free from any damages such as cracks. 2. Place the chassis and the voltage booster cylinder in the a...Read more -
Several typical structures and factors causing partial discharge in transformers
Several typical structures and factors causing partial discharge in transformers: Lead-in: In the insulation structure of a transformer, there are many lead arrangements. The electric field distribution between leads is extremely uneven. When two leads with the same radius are parallel or perpe...Read more -
The composition and application of 150kVA/10kV AC withstand voltage equipment
I. Equipment Composition A set of 150kVA/10kV AC withstand voltage equipment, based on its technical principle, can be divided into two types: power frequency test transformer and series resonance test device. It is mainly used as the series resonance device for cable tests, with its core compone...Read more -
Classification and Selection Method of Power Frequency Transformer Comprehensive Test Instrument
I. Product Classification The power frequency transformer comprehensive tester can be classified in multiple dimensions to clearly define the usage requirements. According to the power frequency frequency, it is mainly divided into power frequency testers and high-frequency testers. The power fre...Read more -
Application and Selection of Insulating Oil Dielectric Strength Tester
Insulating oil dielectric strength tester, also known as insulating oil withstand voltage tester or oil dielectric loss tester, is a specialized equipment used to evaluate the electrical insulation performance of insulating oil (mostly transformer oil), mainly for detecting the oil’s abilit...Read more -
Test methods and precautions for the withstand voltage of insulating boots and insulating gloves
Insulating boots and insulating gloves are important personal protective equipment in power operations, and their withstand voltage tests are a key link to ensure safety performance. Test items and requirements Insulation glove withstand voltage test AC withstand voltage test Voltage level: A...Read more -
Test Standard Procedure for Lightning Arrester Discharge Counter Tester
I. Preparation Work Instrument Inspection Confirm that the appearance of the test instrument is intact, and there is no damage to the insulation layer of the power cord and test clamp wire. Exit Operation It is necessary to confirm that the lightning arrester has exited the operation state, disco...Read more -
Characteristics and Usage of Transformer Core Ground Current Tester
I. Instrument Overview The transformer core grounding current tester is a specialized instrument designed for detecting the grounding current of the transformer core and its accessories. It is an important detection device for ensuring the safe operation of the transformer and preventing multi-po...Read more -
Two main methods for transformer induction withstand voltage test
I. Objectives and Basic Principles The induced voltage withstand test is a key item for evaluating the insulation strength of transformers. Its main purpose is to verify the bearing capacity of the main insulation (winding-to-ground and winding-to-winding) and the longitudinal insulation (phase-t...Read more -
Safety Operating Procedures and Precautions in High Voltage Testing
Safety Operating Procedures for High Voltage Tests: The operation procedures of the experiment consist of four parts, namely the preparatory work before the experiment, the experimental procedures, the post-experiment organization, and other precautions. Preparatory work before the experiment: ...Read more -
Different testing methods for transformer DC resistance testers
Power supply The transformer DC resistance tester provides two types of power supply for the test: AC 220V/DC 12V. In the case of strong electromagnetic field interference, it is recommended to use the DC power supply for the test. In this state, the test values are stable and have strong resista...Read more -
Transformer Lightning Impact Test Measurement System and Waveform
The lightning impulse generator usually adopts multi-stage impulse voltage generators. The working principle of multi-stage impulse voltage generators can be simply summarized as multiple capacitors being charged in parallel, and then automatically connected in series for discharge, forming a ver...Read more