Technical Guide
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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 -
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