Health Status Assessment of Miniature Circuit Breakers in High Altitude Environment

As an electrical circuit and equipment protection device, it is of great significance to comprehensively and accurately evaluate the health status of miniature circuit breaker (MCB) to ensure the reliable operation of power grid. The comprehensive evaluation index system of the health status of miniature circuit breakers is discussed, and the health status evaluation method of miniature circuit breakers in high altitude environment is proposed by combining variable weight and fuzzy evaluation method. This method is helpful to solve the common problems in the current product health status assessment, and also provides a theoretical reference for users to choose products.