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Database: 189760 (25 Oct 2025)
DL/T 621-1997 English PDF
Standard ID
Contents [version]
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Standard Title (Description)
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DL/T 621-1997
English
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Grounding for AC electrical installations
Obsolete
DL/T 621-1997
PDF similar to DL/T 621-1997
Standard similar to DL/T 621-1997
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DL/T 5056
DL/T 599
DL/T 5700
Basic data
Standard ID
DL/T 621-1997 (DL/T621-1997)
Description (Translated English)
Grounding for AC electrical installations
Sector / Industry
Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard
P63
Word Count Estimation
31,317
Date of Issue
9/2/1997
Date of Implementation
1/1/1998
Older Standard (superseded by this standard)
SDJ 8-1979; SD 119-1984
Regulation (derived from)
China-Power-Association Standard [2014] 268; State Energy Bureau 2015 No. 1 Notice
Summary
This standard specifies a nominal voltage of 500kV and below the AC power generation, substation, transmission and distribution of electrical equipment (including subsidiaries of DC electrical installations and electrical equipment referred to as Class A) and building electrical installations (referred to class B electrical installations) The grounding requirements and methods.