This standard specifies the technical requirements and test methods for grounding resistance reducing materials (including resistance reducing agents, conductive cement, and materials that make up grounding units such as grounding modules). This standard is applicable to reducing the grounding resistance of grounding devices for industrial and civil electrical installations and other purposes. 2 Normative References: The clauses in the following documents are referred to in the standard and become the clauses of this standard. For all cited documents with a specified period, All subsequent modification orders (excluding corrected contents or revisions) do not apply to this standard. However, all parties who have reached agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest version applies to this standard. GB 6566 Building Material Radionuclide Limits GB/T 16927 Main Test Techniques (GB/T 16927.1-1997, IEC 60060-1: 1989, EQV, GB/T 16927.2-1997, IEC 60060-2:1994EQv) NY 5010 Environmental conditions for pollution-free food and vegetable production areas DLT621 Grounding of AC electrical installations
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