Technical Guide
-
Common problems and solutions in transformer high voltage test
In the high-voltage test of transformers, many key points should be paid attention to, and the test conditions and test methods must be accurately grasped. The faults that occur in the high voltage test of the transformer should be screened one by one, and the faults should be properly handled. E...Read more -
Common troubleshooting methods of Capacitance and Tan Delta tester
It is inevitable that the test data of the high-voltage dielectric loss tester will be obviously unreasonable during use. Once this positive problem occurs, the reason can be found from the following aspects: 1. Poor contact of the hook When using a hook to connect the test object for on-site mea...Read more -
Electrical safety common sense training
Electrical equipment will not endanger human health and surrounding equipment during normal operation and under expected abnormal conditions. When electrical equipment fails unexpectedly, it should be able to cut off the power supply and limit the accident within the allowable range. If electrica...Read more -
Measuring principle of transformer on-line monitoring
One of the effective methods for on-line detection of transformer insulation is to monitor the parameters of partial discharge electric pulses. In the normal operation of the transformer, the partial discharge is small. In recent years, the partial discharge of the transformers above 110kV produc...Read more -
The use range and precautions of Insulating Hipot Gloves (boots) Test Set
The new standard stipulates that electrically insulating shoes shall be used as safety aids for electrical work. As an occupational safety manager, you should clearly understand this. Usually, managers with insufficient electrical knowledge will mistakenly think that 6kV insulated leather shoes o...Read more -
Precautions for Series Resonance Test System
Precautions for Series Resonance Test Syetem 1. During the test, the test phase is connected to the high-voltage source, and the high-voltage lead wire needs to use a special halo-free lead wire, and the non-test phase is grounded with the GIS shell; 2. The test must ensure that the SF6 gas in ea...Read more -
How to effectively prevent overvoltage problems during substation operation
In the process of operating the no-load transformer, there will be an unavoidable physical phenomenon, that is, cut-off. The problem of operating overvoltage due to the cut-off of the circuit breaker can be prevented by taking the following measures: 1. Improve the iron core Improving the iron co...Read more -
How to measure the dielectric loss of transformer
First of all, we can understand that the dielectric loss is that the dielectric is under the action of an electric field. Because of the internal heating, it will convert electrical energy into heat energy and consume it. This part of the consumed energy is called dielectric loss. Dielectric loss...Read more -
The difference between the DC withstand voltage test device and the AC withstand voltage test device
1. Different in nature AC withstand voltage test device: the most effective and direct method to identify the insulation strength of electrical equipment. DC withstand voltage test device: to detect the relatively large peak voltage that the equipment withstands under the high voltage test. 2. Di...Read more -
What are the factors affecting the results of the series resonance test?
Even with the so-called “all-powerful” series resonance, the test results will still be affected by uncertain factors, including: 1. The influence of weather In the case of high humidity, the corona loss of the lead wire increases greatly, and the interference of the surrounding elect...Read more -
How to maintain dry-type test transformer?
Dry-type test transformers mainly rely on air convection cooling equipment. Therefore, it has good heat dissipation performance and excellent environmental usability. Therefore, simple dry-type transformers are generally introduced into every corner of people’s lives with their unique advan...Read more -
What is the primary current generator used for?
The primary current generator is the necessary equipment for the electric power and electrical industry that needs primary current during commissioning. The device has the characteristics of convenient use and maintenance, superior performance, safe and reliable use, beautiful appearance and stru...Read more