New Generation Of Oilless Circuit Breakers 115 KV-345 Kv I. System Requirements

Circuit breakers in this decade will have to satisfy demands, not only for increased ratings but also for reliability, ability to function under multiple contingency situations, reduced environmental pollution, versatility of application, and reduced installation and maintenance costs. The system requirements which new circuit breakers need to meet in order to satisfy these new demands are given. A new line of circuit breakers that satisfies these demands is described. The paper introduces a set of accompanying papers that describe the interrupting, insulating and mechanical systems of this new breaker line in detail.