IEEE C37.012-2005

This project will revise the application guide for capacitance current switching for high-voltage circuit breakers rated in accordance with IEEE C37.04 and listed in C37.06. It is intended to supplement C37.010. With the introduction of new requirements for capacitive current switching stated in C37.04 and the relevant test procedure stated in C37.09, the application guide for capacitance current switching needs to be updated. Revision Standard - Superseded. Guidance for the application of ac high-voltage circuit breakers for capacitance current switching is provided. The document addresses the general theory of capacitance current switching, the notion of restrike, reignition, NSDD and voltage factors are explained. Application of circuit breakers for different network conditions and different capacitive loads (lines, cables, capacitor and filter banks) is treated.