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1.0.1 This standard is developed for the purpose of reducing the earthquake damage to the existing electrical equipment in the industrial plants（hereafter shortened as electrical equipment），avoiding personnel injury and death，and lowering economic loss after the electrical equipment is seismically qualified and aseismatic measures are taken for attainment of the aseismatic precautionary criterion.
1.0.2 This standard is applicable to the aseismatic appraisal and aseismatic measures taken for the existing power transformers，reactors，circuit breakers，arresters，current transformers and potential transformers，electric porcelain equipment，capacitor groups （cabinets），battery banks （cabinets），switchgear cabinets，converter cabinets，control panels and relay panels，DC panels，emergency power supply units，gas insulated switchgears and other electrical equipment with rating voltage of 220kV and below in the areas where the design basic acceleration of earthquake ground motion is not larger than 0.40 g （i.e.，the aseismatic precautionary intensity is 9 degree and below）.
This standard is not applicableto the areas where the design basic acceleration of earthquake ground motion is large than 0.40 g or the existing electrical equipment in industrial plants for which special seismic requirements are specified.
1.0.3 For the electrical equipment that has been seismically qualified and corresponding aseismatic measures have been taken in accordance with this standard，they shall not be severely damaged in case of the earthquake intensity equal to and below the aseismatic precautionary intensity，and they may continue to supply power after minor repair.
1.0.4 For the electrical equipment without aseismatic precaution taken in the areas where the design basic acceleration of earthquake ground motion is 0.05 g （i.e.，the aseismatic precautionary intensity is 6 degree）and above，they must be seismically qualified and necessary aseismatic measures must be taken.
1.0.5 The design basic acceleration of earthquake ground motion and aseismatic precautionary intensity shall be determined in accordance with the current national standard GB 18306 Seismic Ground Motion Parameters Zonation Map of China .For the areas where the aseismatic precaution zoning maps have been developed or the project sites for which seismic safety assessments have been made，they may be seismically qualified per the approved design seismic ground motion parameters or the aseismatic precautionary intensity.
1.0.6 In addition to the requirements stipulated in this standard，those stipulated in the current relevant standards of the nation shall be complied with.