The NB/T 11074-2023 standard specifies the durability test and evaluation method of the operating mechanism box of high voltage switchgear in the power system of 35kV and above in the heat and humidity environment, including technical requirements, test methods, qualification criteria and durability evaluation. It is suitable for the design, manufacture and mass acceptance of high voltage switchgear in heat and humidity areas to ensure the Reliability and safety of the equipment under severe climate conditions.
| Status | Active |
|---|---|
| CCS | ICS |
| Release Date | 2023-02-06 00:00:00 | Implementation Date | 2023-08-06 00:00:00 |