General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 42397-2023
Introduction
Introduction to "GB/T 42397-2023 Calculation of Allowable Short-Circuit Current Considering Non-Adiabatic Effects"
GB/T 42397-2023 is a Chinese national standard that addresses the calculation of allowable short-circuit currents, taking into account non-adiabatic effects. Short-circuit currents can cause significant damage to electrical systems, and it is crucial to accurately determine the maximum allowable current to ensure the safety and reliability of the system.
This standard provides guidelines and methodologies for calculating the allowable short-circuit current in electrical installations. It considers non-adiabatic effects, which refer to the heat generated during the short-circuit event and its influence on the current-carrying capacity of conductors.
The calculation process outlined in GB/T 42397-2023 takes into account factors such as the thermal properties of conductors, ambient temperature, and short-circuit duration. By considering these factors, engineers and professionals can accurately determine the maximum allowable short-circuit current for different electrical installations.
The standard also provides recommendations for conducting tests and validating the calculated values. This ensures that the calculated values are reliable and practical for real-world applications.
Overall, GB/T 42397-2023 plays a crucial role in promoting the safe and efficient operation of electrical systems by providing a standardized approach to calculating the allowable short-circuit current, considering non-adiabatic effects. Compliance with this standard can help prevent accidents, prolong the lifespan of electrical equipment, and enhance the overall reliability of electrical installations.
GB/T 42397-2023 history
2023GB/T 42397-2023 Calculation of allowable short-circuit current when considering non-adiabatic effect