GB/T 156-2017 Translated English of Chinese Standard. (GBT 156-2017, GB/T156-2017, GBT156-2017): Standard Voltages [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 2018. 8. 10. - 12페이지 This Standard specifies the nominal voltage value to be: The preferred value for the nominal voltage of the power supply system; The reference value for the equipment and system design. This Standard is applicable to: AC transmission, distribution, power systems and equipment with nominal voltage greater than 220V, standard frequency of 50Hz. AC and DC traction system. Equipment with rated voltage lower than 120V, standard frequency of 50Hz (but not absolutely limited), DC voltage less than 1500V. They include batteries (consist of primary battery and battery cell), other power supply units (AC or DC), electrical equipment (including industrial and communication), and electrical appliances. |
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120V and DC 220kV above Nominal abnormal transient voltage AC and DC AC lower AC rated voltage AC system AC three-phase system Add the nominal Alternative value Preferred China Railway Clause Continued Unit DC traction system DC voltage lower Delete Electric Power Research equipment with AC equipment with nominal frequency of 50Hz GB/T greater than 220V Grid HVDC transmission system IEC Standard Voltages kV Highest voltage kV Nominal system line voltage lower than 1500V lower than 2.4V Modify the DC Nominal system voltage nominal voltage non-preferred values NOTE Power Research Institute Preferred value Alternative rated voltage DC rated voltage Preferred relevant equipment selected from Table supply voltage system and relevant System Unit table are line transient voltage change value Alternative value value of 400V value Preferred value voltage DC rated voltage for equipment Voltage for HVDC voltage of 1kV voltage of 220kV voltage of AC voltage Preferred value voltage value