Generator load diesel generators offer imported diesel generator accessories 　　 generator type circuit breaker out-of-step opening and closing tests are carried out under the conditions of closing and opening. my country's GB1984 rule: Out-of-step breaking is suitable for contact circuit breakers. When general-purpose circuit breakers are used in 1kV system, there is no need to perform out-of-step breaking and closing tests. This has been revised and is now pending approval. Generator load diesel generators offer imported diesel generator accessories.