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Chinese National Standard Category: Relay protection and automatic device

English Title: Overvoltage protection and insulation coordination for AC electrical installations
Chinese Title: 交流电气装置的过电压保护和绝缘配合
Standard No.: DL/T 620-1997
Category No.: K45
Issued by: MOPI
Issued on: 1997-4-21
Implemented on: 1997-10-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:SDJ 7-1979
SD 119-1984
Word Count:20000 words
Similar Standards: T/QGCML 182-2023   T/QGCML 184-2023   T/QGCML 183-2023   GB 11289-1989   T/QGCML 185-2023   T/QGCML 180-2023   T/QGCML 181-2023   GB/T 14285-2023   GB/T 29327-2023   GB/T 42150.1-2022   GB/T 14598.118-2021   GB/T 14598.181-2021   GB/T 40096.3-2021   GB/T 40096.2-2021   GB/T 40096.5-2021   GB/T 40096.1-2021   GB/T 40096.4-2021   GB/T 40091-2021   NB/T 10675-2021   GB/T 38953-2020  
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