IEEE C37.66-2005 pdf free.IEEE Standard Requirements for Capacitor Switches for AC Systems (1 kV to 38 kV). Abstract: Required definitions, ratings, and procedures for performing design tests, production tests, and construction requirements for capacitor switches for ac systems from 1 kV to 38 kV are covered. Keywords: back-to-back capacitor switching, capacitor load, capacitor switches, inrush current, operation, pole discrepancy, probability...