Technical Guide
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Application Scope and Test Procedures of Transformer Ratio Tester
Transformer ratio tester is an important testing device in power systems, transformer manufacturing plants and maintenance departments. Its core function is to measure the voltage ratio (ratio), ratio error and connection group designation of transformers and instrument transformers. Application ...Read more -
Selection of High-Voltage Circuit Breaker Gap Withstand Voltage Test Equipment
I. Components of the High Voltage Circuit Breaker Breaker Terminal Voltage Test Device (1) High Voltage Boost Unit The power frequency test transformer is mainly divided into three types: oil-immersed, gas-filled (SF6), and dry type. For high voltage levels of 110kV and above, a series excitation...Read more -
The Composition and Selection of Insulating Boots and Gloves Withstand Voltage Test System
Insulation tool (gloves and boots) testers are key equipment for conducting preventive tests on safety tools in the power industry. They are mainly used to test the withstand voltage performance of insulating boots and gloves to ensure that workers are protected from electric shock during operati...Read more -
Classification and Selection Method of Transformer Ratio Tester
I. Classification of Transformer Ratio Testers Based on technical principles, application scenarios, and integration level, the transformer ratio testers available in the market are mainly classified as follows: (1) By technical principle Traditional type (ratio bridge) Characteristics: Based on ...Read more -
Classification and Application of Relay Protection Comprehensive Test Instruments
I. Classification of Relay Protection Testers Based on technical principles, output characteristics, and portability, they are mainly classified as follows: (1) Classification by Technical Development and Output Waveform Intelligent type (microcomputer/digital) Characteristics: Controlled by DSP ...Read more -
Common Abnormal Phenomena and Fault Analysis of GIS Equipment
Common Faults of GIS The advantages of GIS equipment, such as high operational reliability, low maintenance workload, and long maintenance cycle, have been demonstrated. However, some faults have occurred successively, mainly manifested in the following aspects: SF6 gas leakage Such faults usu...Read more -
Application and Selection of Three-channel Transformer DC Resistance Tester
The three-channel transformer DC resistance tester is a core instrument for the detection of power transformers, mutual inductors and other inductive equipment. It is mainly used to measure the DC resistance of transformer windings together with bushings. Application scope The core advantage of t...Read more -
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