This standard specifies the basic electrical safety requirements for power production units and personnel working in power production sites. This standard applies to all electrical equipment and related locations used by power generation enterprises with voltage levels of 66kV and above; All electrical equipment and related places used by transmission, transformation, and distribution enterprises with voltage level facilities of 35 kV and above; Electrical equipment and related places used by electricity consuming units with voltage levels of 220 kV and above. Other power enterprises and consumers can also refer to it for use. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 2900.20-1994 Electrotechnical Terminology, High Voltage Switchgear (IEC 60050 (IEV): 1994, NEQ) GB/T 2900.50-2008 Electrotechnical Terminology for Power Generation, Transmission and Distribution, General Terminology (IEC 60050-601; 1985, MOD) GB 26860-2011 Code for Electrical Safety Operation - Electrical Part of Power Plants and Substations - Terms and Definitions GB/T 2900,20-1994, GB/T 2900,50-2008, and the following terms and definitions apply to this document. 3.1 Low voltage; LV is used for voltage levels of 1000 V and below in AC power systems for distribution. [GB/T 2900.50-2008, Definition 2.1 601-01-26] 3.2 High voltage; HV (1) usually refers to a voltage level that exceeds low voltage. (2) In specific cases, it refers to the voltage level of transmission in the power system. [GB/T 2900.50-2008, Definition 2.1, 601-01-27] 3.3 Electrical generation stations in power plants are composed of buildings. A factory that produces electrical energy consisting of energy conversion equipment and all necessary auxiliary equipment. [GB/T 2900.50-2008, Definition 2.3 601-03-01]
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