IEEE Approved Draft Standard for Electrical Control for AC High-Voltage (>1000 V) Circuit Breakers

Standard requirements for all types of electrical control circuits for ac high-voltage circuit breakers rated above 1000 V are given. Any type of power-operated mechanism and both ac and dc control power are applicable for this standard. Only basic control elements of the circuit breaker, including reclosing where required, are included in this standard. Devices or circuits for protective relaying, special interlocking, and so forth are not included.