汇流排联络断路器保护：长延时过流、瞬时过流保护。
Protection of bus-tie circuit breakers: long time delay overcurrent and instantaneous overcurrent.
对断路器延时保护特性的校验方法进行研究，提出一种断路器在线智能测试校验新方法。
In this paper the test technique of protecting time-delay of circuit breaker is discussed and a new online test method is proposed.
这些断路器应在每极上装有额定值从80%至160%可调的长延时过电流装置。
These circuit breakers should have the long time-delay over-current devices on each polar whose rated value can be adjusted from 80% to 160%.
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