抄録
The three separate JEC standards have been applied to switchgear: JEC-2300 (for AC circuit breakers), JEC-2310 (for AC disconnectors) and JEC-2350 (for gas-insulated switchgear). There are differences in the details of these standards, and these differences have caused problems in areas such as uniformity among electric power station systems, and consistency with IEC standards. This overview describes the background and main points of discussion leading to the enactment of JEC-2390. JEC-2390 includes the common requirements for high-voltage switchgear and cotrolgear based on IEC 62271-1. In future, there will be a need for ongoing study of IEC provisions that were passed over for inclusion in JEC-2390.
