1.0.1 This code is developed to implement and execute national technical & economic policy; achieve personal safety, power supply reliability, state-of-art technology and rational economy during the design of electric power supply systems.
1.0.2 This code is applicable to the design of construction, extension and renovation for user-terminal electric power supply systems.
1.0.3 Electric power supply systems shall comprehensively and properly be designed in accordance with such factors as load property, power capacity, project characteristics and regional power supply condition.
1.0.4 The design of electric power supply systems shall meet the current usage and the future development in accordance with the characteristics, scale and development program of the project.
1.0.5 Advanced electrical products, meeting the requirements of national current standard and with such properties as high efficiency, energy conservation, environmental-friendliness as well as being safety shall be adopted in electric power supply systems.
1.0.6 This code specifies the basic technical requirements for the design of electric power supply systems. In case this code conflicts with the provisions in national laws and administrative regulations, the later prevails.
1.0.7 The design of electric power supply systems shall meet the requirements stated in this code and those in the national, current and relevant standards.
2 Terms
2.0.1 Vital load in first grade load
Load which may cause poisoning, explosion, fire disaster, etc. due to power supply interruption, or the one for which power supply must not be interrupted in vital places
2.0.2 Duplicate supply
One load power-supplied by two circuits, which are mutually independent in terms of safety power supply.
2.0.3 Electric supply systems for safety services
Power supply system which is used to maintain the operation of electrical equipments and electric apparatuses; to keep the health and safety of both humans and livestock; and/or to avoid the damages of environment or other equipments
Note: power supply system includes the electric circuit connected from power box to electrical equipment terminals. On certain occasions, it may also involve equipments.
2.0.4 Electric source for safety services
Power supply being used as the components of electric supply systems for safety services
2.0.5 Stand-by electric source
Power supply, when normal power supply is interrupted, being used to maintain the operation of electric apparatuses or their partial components due to non-safety factors
2.0.6 Distributed generation