T/ZZB 2173-2021
Indoor high voltage AC earthing switchs for rated voltages above 12kV and up including 40.5kV (English Version)
- Standard No.
- T/ZZB 2173-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- Group Standards of the People's Republic of China
- Latest
- T/ZZB 2173-2021
- Scope
- This document specifies the terms and definitions, usage conditions, product models and ratings, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality of 12 kV ~ 40.5 kV indoor high-voltage AC grounding switches. promise. This document applies to indoor high-voltage AC grounding switches with rated voltages from 12 kV to 40.5 kV and rated frequencies of 50 Hz. Note: High-voltage AC grounding switches with a rated frequency of 60 Hz may refer to this standard.
T/ZZB 2173-2021 history
- 2021 T/ZZB 2173-2021 Indoor high voltage AC earthing switchs for rated voltages above 12kV and up including 40.5kV
