Technical
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Selection, Application, and Standard Procedures for Partial Discharge-Free Dielectric Withstand Test Equipment
The no-discharge withstand voltage test is the core method for inspecting the insulation performance of high-voltage power equipment. Its main objective is to detect the latent insulation defects that may exist in the equipment during manufacturing, transportation, or installation. The local disc...Read more -
Difference between contact resistance tester and DC resistance tester
In preventive testing and condition-based maintenance of power systems, contact resistance testing—also known as loop resistance testing—is a critical step for evaluating the quality of conductor connections. The accuracy of measurement results directly affects the safety and reliability of equip...Read more -
Safety Precautions for DC High Voltage Generator Testing
The DC high voltage generator (abbreviated as DC high voltage generator) is an essential instrument required for conducting DC high voltage tests in specific situations. As it is a high-voltage power source, the voltage range typically varies from 60KV to 300KV, making safe operation extremely im...Read more -
Method of Using the Inter-turn Impulse Voltage Withstand Tester
The inter-turn impulse withstand voltage tester (also known as the inter-turn impulse withstand voltage testing instrument) is a device that performs withstand voltage tests using inter-turn pulses. So, how do you use this inter-turn impulse withstand voltage tester? Let’s take a look toget...Read more -
Application and Standard Procedures of Partial Discharge Shielded Rooms in Partial Discharge Testing
Partial Discharge (PD) is an important precursor to insulation deterioration in high-voltage electrical equipment. The sensitivity of modern PD measurement has reached the picocoulomb (pC) level, while external electromagnetic interference (EMI) can easily overwhelm the weak discharge pulses. The...Read more -
Configuration of different sensors for circuit breaker dynamic characteristic tester
Breaker dynamic characteristic testing is a critical step in verifying the mechanical performance of switchgear. The accuracy of test results heavily depends on the proper selection and installation of sensors, as well as strict adherence to relevant industry standards. This article systematicall...Read more -
Methods for generating various types of impulse voltages using an impulse voltage generator
The generation of the lightning impulse waveforms by the impulse voltage generator is quite simple. It only requires connecting an appropriate cutoff gap in parallel to the test specimen, allowing it to break down under the action of the full wave of the lightning impulse. Thus, the waveform acti...Read more -
Application and Testing Procedures for Electrical Safety Tools Testing Equipment
I. Necessity of Preventive Testing for Electrical Safety Tools Preventive testing of electrical safety tools is a critical component of the power industry’s safety management system. According to DL/T 1476-2023, “Regulations for Preventive Testing of Electrical Safety Tools,” au...Read more -
Various operation methods for generating impulse voltages using impulse voltage generators
The generation of the lightning impulse waveforms by the impulse voltage generator is quite simple. It only requires connecting an appropriate cutoff gap in parallel to the test specimen, allowing it to break down under the action of the full wave of the lightning impulse. Thus, the waveform acti...Read more -
Standard procedures and test equipment for insulation glove withstand voltage test
I. Explanation of the Necessity of Insulation Gloves Testing Insulation gloves are important protective equipment for safeguarding the personal safety of operators in power operations. The stability of their insulation performance directly determines whether potential safety hazards in scenarios ...Read more -
Anti-interference Interference-Free Dielectric Loss Tester Manufacturer’s Test Feature Description
Anti-interference Frequency-Shift Dielectric Loss Tester, used for on-site anti-interference dielectric loss measurement or laboratory precise dielectric loss measurement. The instrument is of an integrated structure, with built-in dielectric bridge, variable-frequency power supply, test transfor...Read more -
Working Principle and Selection Criteria of Live Testing Instruments for Surge Arresters
As power systems continue to demand higher reliability in power supply, traditional preventive testing during outages can no longer fully meet the timeliness requirements for equipment condition assessment. Zinc oxide surge arresters operate continuously under service voltage; once internal varis...Read more