This standard specifies the terms and definitions, symbols, classifications, characteristics, product information, normal operation, installation and transportation conditions, structural and performance requirements, and test methods of intelligent AC universal circuit breakers (hereinafter referred to as circuit breakers). This standard applies to circuit breakers with a rated frequency of 50/60Hz, a rated operating current not exceeding 8000A, and a rated operating voltage not exceeding AC 690V. Circuit breakers with a rated voltage higher than 690V AC but not exceeding 1500V can be tested according to this standard. The circuit breaker to which this standard applies should be equipped with an electronic controller (hereinafter referred to as the controller), which has basic overcurrent protection functions, a reasonable human-machine interface, its own fault diagnosis and processing functions, and other functions that give full play to the advantages of electronic technology. Optional features.
T/CEEIA 393-2019 history
2019T/CEEIA 393-2019 Intelligent conventional AC circuit-breaker