Technology Class

As the operational lifespan of equipment increases, aging phenomena become more pronounced, leading to performance degradation, increased failure rates, and the potential inability of conventional tests to fully uncover latent problems. This article will delve into the impact of power equipment aging on relay protection testing and propose corresponding countermeasures.

Although the series resonance test device has undergone strict quality inspection before leaving the factory, various faults may still be encountered during the test due to the complex and changeable on-site environment. The above content provides analysis and treatment suggestions for common faults to help testers solve problems more quickly and accurately.

DC high-voltage generators play an indispensable role in power cable testing. This article will deeply explore the five major functions of DC high-voltage generators in cable testing, as well as their key position in ensuring cable quality and safety.

The ultra-low frequency withstand voltage generator is an indispensable test equipment in the power system, which is used to ensure the reliability and safety of electrical equipment under ultra-low frequency voltage. This article introduces in detail the use, precautions and maintenance of the ultra-low frequency withstand voltage generator, aiming to help users conduct withstand voltage tests safely and effectively.

In the maintenance and fault prevention of power systems, loop resistance testing plays a vital role. This article aims to deeply explore the necessity of loop resistance testing and comprehensively introduce various testing methods to provide professional guidance for the management and maintenance of power equipment.

With the continuous development of society, the capacity of power equipment is getting larger and larger, so the performance requirements for its insulation part are higher. Some traditional conventional megohmmeters can no longer complete high-requirement insulation tests. Nowadays, the insulation resistance tester is more commonly used. So what should we pay attention to when using this instrument? Let me explain it to you below.

With the complexity and intelligence of power systems, the accuracy and reliability of relay protection devices have become particularly critical. As the core tool for detecting the performance of these devices, the functionality and accuracy of microcomputer relay protection testers are crucial to the safe operation of power systems. The following is an in-depth analysis of the fault content that microcomputer relay protection testers can detect:

Relay protection testers play a vital role in the maintenance and protection of power systems. They are used to detect and verify the accuracy and reliability of relay protection devices, ensuring timely and effective protection when power system failures occur. The following is a detailed analysis of the differences between single-phase, three-phase and six-phase relay protection testers to help professionals choose the right test equipment based on specific application needs.

Due to different test methods, the internal resistance of the battery is divided into DC internal resistance and AC internal resistance. DC internal resistance is the battery internal resistance measured by the instantaneous DC discharge method, and AC internal resistance is the battery internal resistance measured by the AC injection or discharge method.

The DC high-voltage generator uses medium-frequency rectification and filtering technology to solve the shortcomings of large ripple coefficient and unstable waveform of the power frequency DC high-voltage generator. It is widely used in DC withstand voltage test and leakage current test of electrical equipment, and is specially equipped with the function of testing the voltage U1mA under 1mA and the leakage current under 0.75U1mA of the zinc oxide lightning arrester.