1. Subject content and scope of application
This standard specifies various methods for identifying the terminals of electrical equipment (hereinafter referred to as equipment), and establishes general rules for identifying equipment terminals and specific wire ends in an alphanumeric system. This standard applies to equipment (such as resistors, fuses, relays, contactors, transformers, rotating electrical machines, etc.) and the identification marking of the terminals of the combination of these equipment, also applies to the identification of specific wire ends. When necessary, the detailed application of these general rules to certain products and the necessary auxiliary identification methods can be given in the relevant standards.
2. Citation Standards
GB 4728 Graphical symbols for electrical diagrams GB5465 Graphical symbols for electrical equipment.
3. Identification method
Equipment terminals and specific wire ends can be identified using one or more of the following methods.
(1) Use the marking system of the relevant product to determine and identify the actual or relative location of equipment terminals or specific wire ends.
(2) Use the marking system of related products to determine and identify the color marking of equipment terminals and specific wire ends.
