Technical Guide
-
Why transformers need do high voltage withstand test?
When the transformer operates in the power grid, it not only has to bear the action of voltage and current in normal operation, but also bear the action of various short-term abnormal voltage and current. Therefore, the transformer must be designed and manufactured to have sufficient safety and r...Read more -
What is Transformer No-load test ?
The no-load test of the transformer is a test to measure the no-load loss and no-load current of the transformer by applying the rated voltage of the rated sine wave rated frequency from the winding on either side of the transformer, and the other windings are open-circuited. The no-load current ...Read more -
Precautions for operating the high voltage insulation resistance tester
Precautions for operating the high voltage insulation resistance tester: HV HIPOT GD3126A/GD3126B Intelligent Insulation Resistance Tester 1. Work on de-energized circuits as much as possible. Use proper lockout/tagout procedures. If these procedures ar...Read more -
Points for attention when doing high voltage AC and DC tests
Points for attention when doing high voltage AC and DC tests 1. The test transformer and control box should have reliable grounding; 2. When doing high-voltage AC and DC tests, 2 or more people must participate, and the division of labor should be clearly defined and the methods of each other sho...Read more -
The importance of VLF withstand voltage device to generator withstand voltage test
During the load operation of the generator, the insulation will gradually deteriorate under the action of electric field, temperature and mechanical vibration for a long time, including overall deterioration and partial deterioration, resulting in defects. The withstand voltage test of generators...Read more -
What is the problem of the inaccurate measurement results of the DC high voltage generator?
The DC leakage test using a DC high voltage generator is to comprehensively analyze the insulation quality of the tested product through the magnitude of the leakage current, the change of the leakage current during the continuous boosting process, and the stability of the leakage current when th...Read more -
How to use the ground resistance tester
Grounding resistance is a device that is often used in power industry testing, so how to operate it correctly? GDCR3000C Grounding Resistance Tester 1. First, check whether the current line, voltage line and ground network line used for the test are open, whether the rust on the ground pi...Read more -
How to judge whether the port of the High Voltage Circuit Breaker Tester is normal
Select [Test]-[Close], there is a real-time status display of 12 fractures below the LCD screen of the high-voltage switch dynamic characteristic tester. The screen shows that under this interface, you can check whether the fracture channel of the instrument is in good condition. If the fracture ...Read more -
Why are transformers divided into oil-type, gas-type and dry-type
what is the difference between oil-type, gas-type and dry-type? In this article, HV Hipot will introduce these three different test transformers for you in detail. Because of the difference in the internal structure of the test transformer, there are three types of test transformers, all of which...Read more -
Precautions for DC Resistance Tester
Transformer DC resistance measurement is a must-test item for semi-finished products, finished products factory test, installation, handover test and preventive test of power sector in transformer manufacturing. Defects and hidden dangers after operation. Transformer DC resistance tester is a rap...Read more -
Operation Introduction for Capacitance & Tan Delta Tester
Description of Capacitance & Tan Delta Tester capacitance &tan delta tester is a very basic method in insulation test, which can effectively check the overall moisture deterioration of electrical equipment insulation, as well as local defects. Different frequency automatic capacitance &am...Read more -
Introduction for SF6 Gas Leak Detector
When choosing and understanding the sf6 gas leak detector, you should be able to pay attention to the information of these tests, and be able to understand these specific problems, and be able to pay great attention to and attach great importance to some of its advantages. Using conditions and en...Read more