GB/T 18891-2002
AbolishedIdentification by hour numbers of thephase conductors of 3-phase electric systems
三相电力系统相导体的钟时序数标识
Application Summary AI generated
This standard specifies a method for identifying the phase conductors (L1, L2, L3) in three-phase electric systems using hour numbers (e.g., 12, 4, 8) based on a clock face analogy. It is applied in electrical engineering for the design, installation, and maintenance of power distribution systems, switchgear, and industrial equipment to ensure consistent phase sequence identification. The standard is particularly relevant for testing and commissioning contexts where accurate phase alignment is critical for safety and operational compatibility.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.